Find checked plumbers in Merton for kitchen installation, refurbishment and repairs — sinks, taps, boiling-water taps, gas hobs, waste disposal units, and dishwasher/washing machine installs.

✅ Checked before listing — identity, insurance, trading presence, Gas Safe (where relevant).
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✅ Workmanship guarantee badges on listings — 1, 3, 6 or 12 months

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Contact one or more plumbers directly from the listings above. Listings are checked before publication. Workmanship guarantee availability is shown on each listing where offered.

When you contact a plumber, confirm:

• Service scope and timeline.
• Diagnostic, design, and installation pricing.
• Whether other trades are included or quoted separately (Gas Safe engineer for hobs, electrician, tiler, decorator).
• Call-out and snagging terms.

You contact and pay the plumber directly — each listing operates independently. You can contact more than one plumber, and there is no commitment until you agree a booking.

Visible water escape, leaking pipe under the kitchen sink, burst pipe? See Burst Pipes Merton for immediate isolation guidance.

Blocked kitchen sink, slow-running waste, blocked drain outside the kitchen? Blocked Drains Merton is the right starting point.

Smell gas, hear hissing or suspect a gas leak? Call the National Gas Emergency Service on 0800 111 999 immediately (free, 24/7).¹

Renting from a housing association? Kitchen installations and significant repairs are normally arranged by your housing association — check your tenancy paperwork. See routing below.

Right page for your problem

• New kitchen installation, refurbishment, sink and tap install, boiling-water tap, gas hob install, waste disposal unit, dishwasher / washing machine plumbing-in — you’re on the right page.
• Tap dripping, single tap repair, cartridge replacement only — Tap Repair / Installation Merton
• Blocked kitchen sink, blocked drain, slow waste — Blocked Drains Merton
• Boiler-side hot water issue (no hot water at kitchen tap, pressure loss, system or cylinder issue) — Boiler Repair Merton or Central Heating Repair Merton
• Hidden leak under kitchen floor, behind units, or in screed — Leak Detection Merton
• Standalone washing machine or dishwasher installation — Washing Machine / Dishwasher Installation Merton
• Out-of-hours emergency — Emergency Plumber Merton

What kitchen plumbing covers

Kitchen plumbing spans the water supply and drainage that serve the sink, the appliances that connect to water and waste (dishwasher, washing machine, water-fed fridge), the gas connection where there’s a gas hob, range cooker or gas oven, and the regulatory framework around any electrical work introduced as part of a kitchen install or refurb.

Approved Documents provide guidance on meeting Building Regulations requirements; they are not the law itself. BS 7671 is the recognised standard for compliance with Part P but is not legislation itself.

Water supply. Cold and hot water feeds to the kitchen tap, dishwasher, washing machine (if in-kitchen), water-fed fridge, and any boiling-water tap. Building Regulations requirements for cold water supply (G1) and hot water supply and systems (G3) are set out in Approved Document G.⁵⁶

Hot water provision. Hot water at the kitchen tap depends on the property’s hot water system — combi boiler (instant), system or regular boiler with cylinder, or local electric heater. For combi systems, kitchen tap flow rate is limited by the boiler’s hot water output. Unvented hot water cylinders are pressurised systems; installation must be carried out by a competent person, and notified to building control unless self-certified via a competent person scheme.⁵⁶

Sanitation and waste. Sanitary appliances (kitchen sinks and the like) and kitchens generally are covered by Approved Document G — kitchens specifically engage G6.⁵⁶ The drainage and waste pipework that takes wastewater away from those appliances — above-ground sanitary pipework, traps, and below-ground foul drainage — is covered by Approved Document H (H1 foul water drainage, including sanitary pipework).⁵⁸

Gas appliances. Gas hobs, gas cookers, range cookers and gas ovens are common in Merton kitchens. Gas appliance installation must be carried out by a Gas Safe registered engineer competent for the appliance category — domestic cookers and hobs are a separate competence to domestic boilers.⁵ ¹⁵ See the Gas hobs and gas cookers section below.

Ventilation. Kitchens must have adequate ventilation; this is typically achieved with mechanical extract ventilation (cooker hood with external venting, or independent extract fan) in line with Approved Document F. Approved Document F sets out intermittent or continuous extract rates for kitchens. A recirculating cooker hood alone does not provide Part F extract ventilation; separate compliant extract may be required.⁵⁷

Electrical work. Modern kitchens commonly involve electrical work — new sockets for appliances, lighting under units, isolators for boiling-water taps, hardwired ovens, and dedicated supplies for high-load appliances. Since 2013, kitchens are not a special location for Part P notification purposes. Notifiable electrical work in a kitchen is generally limited to: new circuits, consumer unit replacement, and any work that falls within a special location elsewhere in the property. Other kitchen electrical additions or alterations must comply with Part P and BS 7671 but are not normally notifiable. See the Kitchen electrical work section below.

A new kitchen installation typically engages all of these elements. A kitchen repair usually engages one or two.

Gas hobs and gas cookers

Gas hobs, gas cookers, range cookers and gas ovens are common in Merton kitchens and are a significant part of kitchen installation work.

Installation, repair and removal of gas appliances must be carried out by a Gas Safe registered engineer. Under the Gas Safety (Installation and Use) Regulations 1998 (enforced by HSE), gas work must be carried out by an engineer who is registered through the Gas Safe Register and competent for the specific category of work.⁵ Carrying out gas work without Gas Safe registration is illegal and can be prosecuted under the Gas Safety (Installation and Use) Regulations 1998. Domestic cookers and hobs are a separate competence to domestic boilers — both the business registration and the individual engineer’s ID card should be checked, and category competence on the ID card confirmed before any work begins.¹⁵

A non-Gas Safe registered person cannot install gas work and have it later “signed off” by a Gas Safe engineer — HSE explicitly rejects retrospective certification of unsafe work, and registered engineers signing off unregistered work themselves face prosecution. Gas appliance installation must be carried out by a Gas Safe registered engineer from the outset.

For kitchen refurbishments involving gas appliance changes:

• A plumber installing a kitchen who is not Gas Safe registered will normally coordinate with a Gas Safe engineer for hob, cooker and range cooker connections.
• Disconnection and reconnection of an existing gas hob during a kitchen refurb still requires a Gas Safe engineer, even if the appliance is just being moved.
• New gas connections (extending pipework to a new hob position) must be carried out by a Gas Safe engineer.
• Gas safety duties for landlord-provided gas appliances, flues and pipework remain the landlord’s responsibility under the Gas Safety (Installation and Use) Regulations 1998. Annual gas safety checks must be carried out on relevant gas fittings by a Gas Safe registered engineer. Tenant-owned gas appliances are treated differently, although associated pipework and flues may still need to be considered.

Gas emergency. Smell gas, hear hissing or suspect a gas leak. Do not switch anything on or off, and do not use flames, electrical appliances, or smoke.

Open doors and windows if it is safe to do so. If you know where the gas meter emergency control valve is and it is safe to reach, turn off the gas at the meter. Leave the property if the smell is strong or you feel unsafe, and call the National Gas Emergency Service on 0800 111 999 (free, 24/7) from outside.¹

If you are unsure of the emergency control valve’s location or how to operate it, do not attempt to use it. Leave the property, ventilate as you go, and call 0800 111 999 from outside.

Carbon monoxide. Faulty, badly installed or poorly maintained gas appliances, including gas hobs and gas cookers, can produce carbon monoxide (CO).¹⁷ Symptoms include headaches, dizziness, nausea, confusion, or symptoms that ease when leaving the property. If anyone develops these symptoms, open windows, leave the property, and call 0800 111 999. Do not use the appliance again until it has been checked and made safe by a competent Gas Safe registered engineer. Under the Smoke and Carbon Monoxide Alarm (Amendment) Regulations 2022, in rented homes a CO alarm is required in any room used as living accommodation that contains a fixed combustion appliance, excluding gas cookers.³⁹ Owner-occupiers can install a CO alarm as a sensible safety measure regardless of duty.

Kitchen electrical work

Since 2013, kitchens are not a special location for Part P notification purposes. Most kitchen electrical work is therefore not automatically notifiable on the basis of being in a kitchen.

Notifiable kitchen electrical work under Building Regulations Part P is limited to:

• New circuits (for example, a dedicated circuit for a new electric oven, electric hob, or boiling-water tap if a new circuit is required).
• Consumer unit replacement or any work to the consumer unit.
• Work within special locations elsewhere in the property (for example, electrics in a bathroom adjoining the kitchen).

Non-notifiable kitchen electrical work includes: like-for-like replacement of sockets, light switches, and accessories; adding additional sockets or fused spurs to an existing circuit; replacing a cooker hood that uses an existing fused spur. All of this work must still comply with Approved Document P and BS 7671 — but is not normally notifiable to building control.³⁷

All electrical work must comply with BS 7671 regardless of notification status. Competence is still required, and an Electrical Installation Certificate or Minor Electrical Installation Works Certificate is normally issued where appropriate under BS 7671 — the certificate is the practical record that the work meets the wiring regulations, whether or not building control notification is also required.

Notifiable work, where it occurs, must be certified through an Approved Document P route — typically a competent person scheme registration (NICEIC or NAPIT, among others), a third-party certifier, or building control.

A plumber installing a kitchen normally does not carry out the electrical work themselves unless they hold relevant electrical qualifications. Most directory plumbers working on kitchen installations either coordinate with a Part-P-registered electrician for any notifiable work or work alongside one already on site. Non-notifiable work can be carried out by a competent electrician without scheme registration, but the work must still comply with BS 7671 and a certificate is normally issued where appropriate.

Common kitchen plumbing tasks

The points below are for orientation — actual scope on the day depends on the property and what’s already in place. Local property-type observations are added where Merton’s housing stock affects how the task typically presents.

• New kitchen installation. Removing the existing kitchen, modifying water supply and waste pipework as needed, installing the new sink, taps and appliances, commissioning, and finishing. Tiling, plastering, decorating, gas appliance work, and most electrical work are normally separate trades or quoted separately. In converted Victorian and Edwardian flats often found in Wimbledon and west Merton, kitchen installations may engage shared waste stacks and party-wall pipework, requiring managing-agent permission.
• Kitchen refurbishment. Existing layout retained or partly reconfigured. In Raynes Park 1930s semis, kitchen refurbishments often coincide with rear extensions, requiring new waste runs to the existing soil stack and re-routed cold mains and hot water feeds.
• Sink and tap install. Replacing an existing sink and tap with a new unit, modifying waste and supply if needed. In Merton’s hard-water area, mixer cartridge replacement at the same visit as a tap upgrade may be worth discussing.
• Boiling-water tap install. Boiling-water taps (Quooker, InSinkErator and similar) provide instant near-boiling water at the tap. Installation typically involves an under-counter tank, a dedicated electrical supply, pressure regulation, and isolation valves. Whether the electrical supply is notifiable depends on whether it requires a new circuit. Hard water in Merton accelerates scale build-up in boiling-water tap tanks; periodic descaling is part of routine maintenance.
• Gas hob install. Disconnecting any existing hob, fitting the new hob, connecting to the gas supply, leak-testing, and commissioning. Must be carried out by a Gas Safe registered engineer competent for cookers and hobs.⁵
• Waste disposal unit (food waste disposer) install. A grinding unit fitted under the sink, connected to the waste run with a dedicated trap. Some Merton waste runs (older properties with cast-iron drainage, shared stacks in flats) may not be suited to waste disposal — the unit’s outflow is heavy with ground food waste, and older or shared drainage can block. Check with the freeholder or managing agent in flats before installing.
• Dishwasher plumbing-in. Connecting a dishwasher to cold water supply and waste, with appropriate isolation valves and standpipe or under-sink trap connection. Normally part of a kitchen install or refurbishment; standalone installs covered separately on Washing Machine / Dishwasher Installation Merton.
• Washing machine plumbing-in. Same general approach as dishwasher; in many Merton properties, the washing machine is in a utility room or kitchen alcove rather than under-counter in the main kitchen run. Standalone installs covered separately on the WM/DW page.
• Water-fed fridge install. A small-bore cold water connection runs to the fridge for ice-making and water dispensing. Includes an inline filter and isolation valve.
• Kitchen sink waste re-route. Where a kitchen layout changes (sink moved to an island, or to the opposite wall), waste re-routing engages the property’s drainage layout. Waste pipework design is covered by Approved Document H (H1 foul water drainage, including sanitary pipework) — pipe sizes, gradients, and trap configurations.⁵⁸ In converted flats and modern apartments with shared waste stacks, freeholder permission is typically required.
• Cooker hood / extract fan install. Mechanical extract ventilation is typically used to meet Approved Document F requirements in kitchens. A recirculating cooker hood alone does not satisfy Part F as extract ventilation; ducted extraction or a separate compliant extract fan may be required.⁵⁷ Cooker hood electrical work must comply with Part P/BS 7671; it is notifiable if it involves a new circuit or other notifiable work.³⁷

What a directory plumber will do — and what they won’t

A plumber arriving for a kitchen installation will normally scope the work, provide a quote (often after a detailed survey for full kitchen installs), modify water supply and waste pipework as needed, install the sink, taps and water-fed appliances, commission the installation, and provide a written record of the work and any product warranties.

Many will also coordinate other trades — Gas Safe engineer (for hobs, cookers, range cookers), electrician, tiler, plasterer, decorator — either by direct subcontracting or by recommending trades the customer engages separately. This varies by plumber.

Directory-listed plumbers will not normally:

• Carry out gas work without Gas Safe registration — gas hob, cooker, range cooker and oven connections must be carried out by a Gas Safe registered engineer competent for the appliance category.⁵ ¹⁵ Non-Gas Safe registered work cannot be retrospectively certified by a Gas Safe engineer. Plumbers without Gas Safe registration coordinate with a Gas Safe engineer.
• Carry out notifiable electrical work without appropriate competence — new circuits and consumer unit changes must be certified through an Approved Document P route.³⁷ Plumbers without Part-P competence coordinate with a registered electrician for notifiable work.
• Install unvented hot water cylinders without appropriate competence — installation must be carried out by a competent person, and notified to building control unless self-certified via a competent person scheme.⁵⁶
• Carry out structural alterations (wall removal, opening up between kitchen and dining area, structural reinforcement for heavy island units or range cookers) without appropriate competence and, where required, building control involvement.
• Work on shared waste stacks or communal pipework in mansion blocks, converted houses or estate housing without authorisation from the freeholder, managing agent or housing association.
• Carry out tiling, plastering or decorating to finish standard — most plumbers leave the kitchen in a “watertight, fittings installed” state, with finishing trades separate.

For kitchen installations in conservation areas or listed buildings, planning and listed building consent should be checked before work that affects external fabric (new external waste pipe routings, cooker hood ducting through visible elevations) — directory plumbers don’t normally manage planning applications.

Boiling-water taps and instant hot water

Boiling-water taps (Quooker, InSinkErator HotTap, Fohën and similar) are increasingly common in Merton kitchens. Installation typically involves:

• An under-counter tank that heats and stores water at near-boiling temperature.
• A dedicated electrical supply (typically a 13A unswitched fused spur). Whether this is notifiable depends on whether a new circuit is required to supply it; using an existing circuit with a fused spur is normally non-notifiable, while a new dedicated circuit is notifiable under Part P. All work must comply with BS 7671 regardless.³⁷
• Pressure regulation — most boiling-water taps require a minimum pressure and benefit from regulated incoming pressure.
• Cold-water isolation valves under the sink for service access.
• Filter cartridges that need periodic replacement.

In Merton’s hard-water area, scale build-up in boiling-water tap tanks is a recurring service-life issue. Most manufacturers recommend periodic descaling (typically every 6–12 months depending on usage and water hardness). Some installs include a built-in scale-reduction filter; others rely on user-managed descaling cycles.

Boiling-water tap installation in a kitchen refurbishment is normally added to the plumber’s quote as a discrete line item, with the tank, tap, electrical work, and commissioning quoted separately.

Waste disposal units

Waste disposal units (food waste disposers) grind food waste into a slurry that goes down the kitchen waste run. Installation considerations specific to Merton’s drainage stock:

• Older Wimbledon and west Merton properties with original cast-iron drainage may not be suited to waste disposal — older pipework can clog with ground waste, and the additional load on aged cast-iron stacks can hasten failure.
• Converted flats with shared waste stacks (common across Wimbledon, Colliers Wood, and South Wimbledon) need explicit permission from the freeholder or managing agent. Some leases prohibit waste disposal units because of the increased blockage risk on shared stacks.
• Modern flats with PVC waste runs are more suited to waste disposal — modern materials handle ground waste more reliably than cast iron.
• HA-managed properties in Pollards Hill, St Helier and similar areas: waste disposal installation is normally not commissionable independently — check with the housing association before commissioning.

A reputable installer should survey the existing waste run and trap configuration before quoting; not every kitchen sink position is suited to a waste disposal unit retrofit.

Merton-specific signals

Merton’s housing stock and street pattern shape kitchen plumbing callouts across the borough. The borough sits in a hard-water area, and housing stock spans Victorian / Edwardian terraces in the west through 1930s suburban semis to interwar and post-war estates in the east and south.

The following are local editorial observations, not official data — drawn from local trade experience and the borough’s confirmed area-by-area mix.

Wimbledon and west Merton (SW19, SW20). Victorian and Edwardian terraces are common, with kitchens often in side-return or rear-extension positions following late-20th-century remodelling. Original kitchen drainage frequently runs in cast iron, with stacks shared between flats in converted houses. Kitchen refurbishments often include drainage upgrade to PVC alongside the cosmetic refurbishment.

In converted flats, kitchen installations engage shared waste stacks and party-wall pipework. Managing-agent or freeholder permission is normally needed for any work that touches communal drainage or affects neighbouring flats.

Conservation area constraints on visible external fabric — cooker hood vent terminations, external waste pipe routes — apply in (among others) the John Innes (Merton Park) and John Innes (Wilton Crescent) conservation areas, both subject to Article 4 directions.⁵³

Raynes Park and west Merton (SW20). 1930s suburban semis with original galley or rear-kitchen layouts. Many properties have rear extensions converting the original kitchen-and-scullery into a single open-plan kitchen-diner. Extension waste runs often connect into the original soil stack at a less-than-ideal angle, surfacing as slow waste or recurring blockages. Refurbishment is a good time to fix run angles and slope per Approved Document H guidance.⁵⁸

Colliers Wood and South Wimbledon (SW19). Mixed stock — older terraces with mixed kitchen ages alongside newer flat developments with consistent fitted-kitchen layouts. Modern flats typically have small kitchen footprints with limited scope for layout reconfiguration.

Mitcham and east Merton (CR4). Interwar and post-war housing estates with consistent kitchen layouts. Some HA-managed properties have planned kitchen replacement programmes that affect what work can be commissioned independently. A meaningful share of the private-rented stock in east Merton is in the borough’s selective licensing wards (Figge’s Marsh, Graveney, Longthornton, Pollards Hill).⁵⁰

Pollards Hill (CR4). Concentration of large estate housing. Kitchen work in HA-managed properties routes through the housing association; private leaseholder kitchens in former-council blocks book directly with managing-agent permission for shared services.

Morden (SM4). 1930s suburban housing and the St Helier estate. Standardised kitchen layouts typical of the period. Hard-water-related fittings wear (mixer cartridges, boiling-water tap scale, dishwasher inlet valves) is a recurring service-life issue.

Motspur Park and Lower Morden (SW20 / SM4). Low-density 1930s housing with typical period kitchen layouts. Refurbishment scope often includes opening kitchen to dining room and adding island units; structural work is normally separate from plumbing scope.

Hard water across the borough. Merton’s hard-water area accelerates scale build-up on kitchen mixer cartridges, boiling-water tap tanks, dishwasher and washing machine inlet valves, and water-fed fridge filter cartridges. Cartridge and filter replacement frequency may be higher than in soft-water boroughs. See our London Hard Water Guide.

Conservation areas. Internal kitchen plumbing does not engage conservation-area controls. External fabric changes (cooker hood vent terminations, new external waste pipes, ducting through visible elevations) can engage controls — that’s a planned-work conversation rather than a fittings-installation one.

Housing association tenants

Merton Council does not own any council housing. Ownership of all Merton Council homes transferred to Merton Priory Homes — now Clarion Housing — in March 2010.⁵²

If you’re a housing-association tenant, kitchen installations and significant repairs are normally arranged by the housing association — typically through a national maintenance contractor on contract. Your housing association may have a planned kitchen replacement programme that determines when kitchen upgrades happen.

For housing-association tenants:

• Check your tenancy agreement or recent correspondence for your housing association’s repairs / out-of-hours line. Most major associations have separate routing for emergencies (gas leak, foul water surcharging, escape of water) and for non-emergency repairs.
• A faulty kitchen tap or non-functioning appliance in mild conditions is normally a non-emergency repair raised through the standard repair line.
• Gas leaks, foul water flooding, or escape of water from kitchen pipework should be raised as an emergency.
• Directory plumbers cannot bill the housing association on your behalf, and may decline to work on installations covered by the housing association’s planned programme or maintenance contract.
• If you want to upgrade your kitchen beyond what the housing association is providing, check tenancy terms first — some associations require permission for tenant-funded improvements.

If your housing association is not responding to a serious kitchen plumbing repair, Merton Council’s Tenants’ Champion can help you escalate.⁵¹ The council’s Housing Enforcement team can also intervene where housing-association repair failures meet the threshold for action.

Leaseholders

If you own a leasehold flat in Merton, your lease sets out which kitchen works are your responsibility (typically all fittings and pipework serving your flat alone) and which are the freeholder’s, managing agent’s or housing association’s (typically shared waste stacks, lateral drains, the building’s connection to drainage and water supply, communal cooker-hood ducting where applicable).

Leaseholder repair responsibilities usually depend on the lease; communal/shared services normally route through the freeholder or managing agent.

Merton-specific leaseholder kitchen considerations:

• Former council blocks (now Clarion Housing-managed). A meaningful number of Merton leasehold flats are in former council blocks following the 2010 stock transfer.⁵² The freeholder is often a housing association rather than a private landlord or commercial managing agent. Leases typically follow the original council lease structure, which can have detailed conditions on kitchen alterations — particularly waste pipe re-routing, cooker hood vent terminations, and any work affecting the flat below.
• Converted Victorian and Edwardian houses (Wimbledon, west Merton). Leases in converted houses often have stricter constraints on kitchen alterations than purpose-built flats, because waste runs and party-wall pipework are shared. Sink relocation, waste re-routing, and any work affecting the floor structure normally requires licence for alterations under the lease.
• Modern flat developments (Colliers Wood, South Wimbledon). Block insurance and managing agent rules typically require notification before any kitchen installation that involves work to the flat’s floor, ceiling, or shared services. Some developments have approved-contractor lists for kitchen work.

For straightforward fittings replacements (like-for-like sink, taps, appliances) within an existing kitchen layout, leaseholders normally don’t need freeholder consent, but check your lease.

Private renters and landlords

If you rent privately in Merton, your landlord (or their managing agent) is normally the first contact for kitchen plumbing repairs. Repair to the installation for water supply and sanitation is likely to engage Section 11 repair duties, for tenancies covered by Section 11 of the Landlord and Tenant Act 1985.¹³

Notify the landlord or agent in writing as soon as a kitchen plumbing fault arises — running leaks, broken fittings, lost water supply, blocked sink. Tenants may be liable where the fault is caused by misuse, neglect of reported issues, or breach of tenancy terms.

If your landlord is unresponsive and the disrepair affects health, safety or sanitation, Merton Council’s Housing Enforcement team can intervene.⁵¹ The council expects you to have notified the landlord first.

Selective licensing and kitchen-condition implications:

If your home is in one of Merton’s selective licensing wards (Figge’s Marsh, Graveney, Longthornton, Pollards Hill) or additional HMO licensing wards (those four plus Colliers Wood, Cricket Green, Lavender Fields), licence conditions cover ongoing repair obligations including sanitary fittings and water supply.⁵⁰ For kitchen-condition specifically:

• Persistent leaks, broken fittings, or sanitary disrepair in licensed properties may trigger licence-condition compliance review alongside normal housing enforcement routes.
• HMO kitchen provision may be assessed under HMO standards and licence conditions; landlords should check Merton’s current HMO standards/licensing requirements.
• Kitchen decommissioning during a refurbishment in an HMO needs alternative cooking provision arranged for tenants.
• Tenants in licensed HMOs may raise kitchen-condition concerns with the council’s licensing team as well as housing enforcement.

Landlord gas safety duty. Landlord gas safety duties apply to landlord-provided gas appliances, flues and pipework under the Gas Safety (Installation and Use) Regulations 1998. Annual gas safety checks must be carried out on relevant gas fittings by a Gas Safe registered engineer, and the Landlord Gas Safety Record must be kept up to date.⁵ The record must be issued to existing tenants within 28 days of the check, and to prospective tenants before they move in. Landlords must keep the gas safety check record for at least 2 years. Tenant-owned gas appliances are treated differently, although associated pipework and flues may still need to be considered.

Landlords arranging kitchen installations or significant repairs should book directly. Documenting the work (written quote, invoice, photographs, dates, gas safety record where applicable) supports both the buildings insurance position and any subsequent regulatory enquiry.

Selective Licensing and HMOs in Merton

Merton Council operates property licensing schemes that affect private rented homes, alongside the national mandatory HMO licensing scheme. Schemes and ward designations can change over time — full and current scheme detail is on Merton Council’s current property licensing pages.⁵⁰

• Selective licensing (24 September 2023 to 23 September 2028): all single-family or two-sharer private rented homes in Figge’s Marsh, Graveney, Longthornton and Pollards Hill wards.⁵⁰
• Additional HMO licensing (24 September 2023 to 23 September 2028): smaller HMOs (typically three or four occupiers forming more than one household, sharing kitchen or bathroom facilities) in Colliers Wood, Cricket Green, Figge’s Marsh, Graveney, Lavender Fields, Longthornton and Pollards Hill wards, where the property is not already covered by the mandatory HMO licensing scheme.⁵⁰
• Article 4 directions for small HMOs — permitted development rights for conversion from dwellinghouse (Use Class C3) to small HMO (Use Class C4) have been removed across Merton. The original direction (in force from 17 November 2022) covers Colliers Wood, Cricket Green, Figge’s Marsh, Graveney, Lavender Fields, Longthornton and Pollards Hill. A further immediate direction covering 13 additional wards — Abbey, Cannon Hill, Hillside, Lower Morden, Merton Park, Ravensbury, Raynes Park, St Helier, Wandle, West Barnes, Wimbledon Park, Wimbledon Town and Dundonald and Village — started on 24 March 2026, with a public consultation period ending 19 June 2026, and is subject to subsequent confirmation. Larger HMOs are controlled separately through planning use class rules.⁵⁹
• Mandatory HMO licensing (national): HMOs occupied by five or more people from two or more households sharing basic amenities. Mandatory licence conditions are set out in Schedule 4 of the Housing Act 2004.⁴⁰

A plumber attending a kitchen installation in a licensed HMO will not enforce licence conditions — that’s the council’s role — but if the visit surfaces installation problems (insufficient kitchen provision, persistent disrepair, unsafe gas work, missing CO alarms where required), the landlord must address those issues to remain compliant.

Indicative kitchen plumbing costs in Merton

The figures below are an editorial estimate only, observed across independent contractors and directories in early 2026. They are not regulated rates, not official market data, and not based on a published cost survey. No UK regulatory body publishes standard kitchen plumbing rates. Prices vary materially by spec, fittings choice, access, structural complexity, and whether other trades are included in the quote. Figures are not a substitute for written quotations.

Merton-specific cost factors that may affect the figure:

• Hard-water-related fittings replacement. Borough-wide; mixer cartridges, boiling-water tap tanks, dishwasher and washing machine inlet valves, and water-fed fridge filters may have shorter service life than in soft-water boroughs. Cartridge/filter replacement at the time of a kitchen refurbishment may be a sensible upgrade.
• Period property drainage upgrade. Wimbledon and west Merton’s Victorian and Edwardian properties may have original cast-iron drainage that benefits from upgrading to PVC alongside a kitchen refurbishment.
• Conservation area constraints. External cooker hood vent terminations or new external waste pipes in (among others) the John Innes (Merton Park) and John Innes (Wilton Crescent) conservation areas may engage conservation-area planning controls — internal-only kitchen work normally does not.
• Flat coordination. Kitchen installations in converted houses (Wimbledon, Colliers Wood) and modern apartment blocks need managing-agent or freeholder permission for any work affecting shared waste stacks or party-wall pipework.
• HA-managed property constraints. Kitchen installations in housing-association-managed properties in Pollards Hill, St Helier and similar areas route through the association rather than independent commissioning.
• Gas Safe engineer separately. For kitchens with gas hobs or range cookers, the Gas Safe engineer’s fee is normally separate from the plumber’s quote — confirm whether the plumber subcontracts the gas work or expects the customer to engage a Gas Safe engineer directly.

Confirm pricing structure (call-out fee, hourly rate, parts mark-up, additional trade charges) when you contact the plumber. For full kitchen installs, expect a detailed survey-based quote rather than a phone estimate.

Why directory-listed plumbers

Areas covered

Directory plumbers cover Merton borough addresses across SW19, SW20, SM4, CR4, SW16, SW17, SW18 and KT3 — including:

• Wimbledon (SW19, SW20)
• Wimbledon Park (SW19)
• South Wimbledon (SW19)
• Colliers Wood (SW19)
• Merton Park (SW19, SW20)
• Crooked Billet (SW19)
• Raynes Park (SW20)
• Cottenham Park (SW20)
• Copse Hill (SW20)
• Motspur Park (KT3, SW20 — partly)
• Morden (SM4)
• Lower Morden (SM4)
• Morden Park (SM4)
• St Helier (SM4 — partly, also Sutton)
• Mitcham (CR4)
• Mitcham Common (CR4 — mostly)
• Bushey Mead (CR4)
• Pollards Hill (CR4 — partly)
• New Malden (KT3 — partly)
• Norbury (SW16 — partly)
• Southfields (SW18 — partly)
• Summerstown (SW17 — partly)

Postcodes can extend beyond borough boundaries; the wards above are the parts within Merton.

Related services

• Bathroom Plumbing Merton
• Tap Repair / Installation Merton
• Washing Machine / Dishwasher Installation Merton
• Blocked Drains Merton
• Leak Detection Merton
• Boiler Repair Merton
• Emergency Plumber Merton
• General Plumbing Merton

Related guides

• London Hard Water Guide
• London Plumbing Costs & Compliance Guide 2026
• How to Read a Plumbing Quote
• Victorian Terrace Plumbing Guide — London 2026
• New Homeowner Plumbing Guide — London 2026
• Landlord Plumbing Compliance Checklist

Closing

A kitchen installation or refurbishment in Merton turns on three things: getting the right scope on the right fittings (sink, taps, appliances, hot water provision compatibility), managing the regulatory framework (Building Regulations Part G/G3 for hot water, Part H for drainage and waste pipework, Part P for notifiable electrics — new circuits and consumer unit changes specifically, Part F for ventilation, gas hobs and cookers requiring Gas Safe registration, building control where structural alterations engage), and coordinating the trades (plumber, Gas Safe engineer, electrician, tiler) so the kitchen comes together to finish standard.

In Merton specifically, hard-water-related fittings wear, period-property drainage in Wimbledon and west Merton, and HA-managed-property routing in east-borough estate housing all shape what’s commissionable independently versus what routes through other parties. Since 2013, kitchens are not a special location for Part P notification — but new circuits and consumer unit changes still require certification, and all electrical work must comply with BS 7671. Gas hobs and cookers require Gas Safe registered installation, with no retrospective certification route.

Merton no longer has council-owned housing — housing-association tenants route through their association’s repairs / planned-replacement programme; leaseholders book their own plumber for kitchen work in the flat with managing-agent involvement for shared services and structural alterations. Plumbers covering kitchen plumbing in Wimbledon, Mitcham, Morden, Colliers Wood, Raynes Park and surrounding Merton areas are listed at the top of the page. Confirm pricing, scope and call-out terms on the call — before any work starts.

Source provenance

Regulatory and safety guidance on this page is drawn from primary UK sources: HSE (gas safety, CO awareness, Gas Safe Register guidance, gas emergency number 0800 111 999, 2-year gas safety record retention, illegal gas work prosecution), the Gas Safety (Installation and Use) Regulations 1998, the Landlord and Tenant Act 1985 (Section 11), the Housing Act 2004 (Schedule 4 — licence conditions), Approved Document G (sanitation, hot water safety and water efficiency, including G6 kitchens), Approved Document H (drainage and waste disposal, H1 foul water drainage including sanitary pipework), Approved Document P (electrical safety in dwellings — notifiable categories under the 2013 amendment, with kitchens not a special location; BS 7671 as the recognised standard for compliance), Approved Document F (ventilation), the Smoke and Carbon Monoxide Alarm (Amendment) Regulations 2022, the Consumer Rights Act 2015 (statutory rights apply alongside any workmanship guarantee), and Merton Council (housing advice, property licensing, Tenants’ Champion, Housing Enforcement, conservation areas, Article 4 directions for small HMOs across Merton, council not owning housing stock — ownership of all Merton Council homes transferred to Merton Priory Homes / now Clarion Housing in March 2010).

Cost figures are an editorial estimate only — not regulated rates and not official market data, and not a substitute for written quotations. Merton-specific signals are local editorial observations, not official data, drawn from local trade experience and the borough’s housing-stock mix across the postcodes and areas listed above.

Sources

¹ HSE — Domestic gas safety FAQ. https://www.hse.gov.uk/gas/domestic/faqs.htm ⁵ Gas Safe Register — Check An Engineer. https://www.gassaferegister.co.uk/find-an-engineer-or-check-the-register/check-an-engineer/ ¹³ Landlord and Tenant Act 1985, Section 11. https://www.legislation.gov.uk/ukpga/1985/70/section/11 ¹⁵ HSE — Check an engineer – are they Gas Safe registered? https://www.hse.gov.uk/gas/gas-safe-register-check.htm ¹⁷ HSE — Carbon monoxide awareness. https://www.hse.gov.uk/gas/domestic/co.htm ³⁷ GOV.UK — Approved Document P (electrical safety in dwellings; notifiable categories under the 2013 amendment — kitchens not a special location; BS 7671 as recognised standard). https://www.gov.uk/government/publications/electrical-safety-approved-document-p ³⁹ GOV.UK — Smoke and Carbon Monoxide Alarm (Amendment) Regulations 2022 (landlord/tenant explanatory booklet). https://www.gov.uk/government/publications/smoke-and-carbon-monoxide-alarms-explanatory-booklet-for-landlords/the-smoke-and-carbon-monoxide-alarm-england-regulations-2015-qa-booklet-for-the-private-rented-sector-landlords-and-tenants ⁴⁰ Housing Act 2004, Schedule 4 (mandatory licence conditions). https://www.legislation.gov.uk/ukpga/2004/34/schedule/4 ⁵⁰ Merton Council — Property licensing for landlords and letting agents (selective and additional licensing schemes; designation 24 September 2023 to 23 September 2028). https://www.merton.gov.uk/council-tax-benefits-and-housing/private-housing/licensing ⁵¹ Merton Council — Tenants’ Champion and Housing Enforcement (housing condition complaints and tenant escalation). https://www.merton.gov.uk/council-tax-benefits-and-housing/housing-advice/tenants-champion and https://www.merton.gov.uk/council-tax-benefits-and-housing/private-housing/complaints-about-the-condition-of-private-housing ⁵² Merton Council — Apply for social housing (ownership of all Merton Council homes transferred to Merton Priory Homes — now Clarion Housing — in March 2010). https://www.merton.gov.uk/council-tax-benefits-and-housing/getting-a-new-home/apply-social-housing and https://www.merton.gov.uk/council-tax-benefits-and-housing/housing-advice/housing-associations-tenancy-rights ⁵³ Merton Council — Conservation areas (overview, including Article 4 directions in John Innes Merton Park and Wilton Crescent). https://www.merton.gov.uk/planning-and-buildings/design-conservation/conservation-areas ⁵⁶ GOV.UK — Approved Document G (sanitation, hot water safety and water efficiency; G6 kitchens; competent person installation requirements for unvented cylinders). https://www.gov.uk/government/publications/sanitation-hot-water-safety-and-water-efficiency-approved-document-g ⁵⁷ GOV.UK — Approved Document F (ventilation; Volume 1 dwellings; extract ventilation requirements for kitchens; recirculating cooker hood does not provide compliant means of ventilation). https://www.gov.uk/government/publications/ventilation-approved-document-f ⁵⁸ GOV.UK — Approved Document H (drainage and waste disposal; H1 foul water drainage, including sanitary pipework). https://www.gov.uk/government/publications/drainage-and-waste-disposal-approved-document-h ⁵⁹ Merton Council — Article 4 directions removing permitted development rights (immediate Article 4 Direction for small HMOs in seven wards from 17 November 2022 confirmed permanent 19 April 2023; immediate Article 4 Direction for small HMOs in 13 wards from 24 March 2026 subject to consultation by 19 June 2026). https://www.merton.gov.uk/planning-and-buildings/planning/permitted-development-and-prior-approval/article-4

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Last reviewed: May 2026 by Adiel Khan — SFEDI-accredited business advisor 20+ years experience (South East Enterprise Ltd) and operator of VerifiedPlumbers. [LinkedIn ↗]

This page is checked for compliance and regulatory accuracy against HSE, Gas Safe Register, Approved Document G, Approved Document H, Approved Document P, Approved Document F and Merton Council guidance. Source links are provided within this page where relevant.