Find checked plumbers for burst pipe repair in Merton — frozen and split pipes, escape-of-water, ceiling leaks from a flat above, mains and supply-pipe failures, hot water cylinder bursts and pipework affected by hard-water scale.

✅ 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

Plumbers set their own response times and prices — confirm availability and pricing before booking.

Contact directory-listed plumbers in Merton ↓

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Safety first

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 can reach it safely, turn off the gas supply at the meter. Leave the property if the smell is strong or you feel unsafe, then 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.

A burst pipe near a gas appliance — for example water cascading into a boiler cupboard — can become a gas concern as well as a water concern. If you smell gas or suspect a gas leak after a burst pipe, call 0800 111 999. If a gas appliance has been water-damaged, do not use it until checked by a Gas Safe registered engineer competent for that appliance category.⁵

Electrics and water

Do not attempt to isolate electrics if there is any risk of contact with water. If water is reaching ceiling lights, sockets, switches or the consumer unit, isolate the property at the main consumer unit (the master switch) only if you can do so without standing in or contacting water.

If in any doubt, do not attempt isolation — leave the affected area and call 999 if anyone is at risk of electric shock.

Notifiable electrical work in dwellings — including new circuits, consumer unit replacement, and work in defined special locations such as the zones around baths and showers — must be carried out by a registered competent person or notified to building control under Approved Document P.³⁷

A plumber will isolate water and repair the leak; restoring electrics that have been damaged or are unsafe usually needs a separate registered electrician.

Carbon monoxide

If a burst pipe has flooded a boiler or affected a flue, do not run the appliance. A faulty, badly installed or poorly maintained boiler is one of the more common sources of indoor carbon monoxide (CO) exposure.¹⁷ Have a Gas Safe registered engineer competent for that appliance category check the appliance before bringing it back into use.

Under the Smoke and Carbon Monoxide Alarm (Amendment) Regulations 2022, private and social rented dwellings in England must have a CO alarm in any room used as living accommodation that contains a fixed combustion appliance other than a gas cooker.³⁹

If anyone develops CO symptoms — headaches, dizziness, nausea, confusion — leave the property, call 0800 111 999, and do not re-enter until the National Gas Emergency Service or a Gas Safe registered engineer has declared it safe.

Right page for your problem

• Burst or split pipe, frozen pipe, escape-of-water, ceiling leak from a flat above, hot water cylinder burst — you’re on the right page.
• Boiler leaking from inside the casing, pressure dropping repeatedly, no heating — Boiler Repair Merton
• Slow drip from a tap, toilet, or fitting that’s not escalating — General Plumbing Merton
• Hidden leak, suspected concealed pipework leak under floors, behind walls or in screed — Leak Detection Merton
• Out-of-hours emergency requiring rapid response across multiple trades — Emergency Plumber Merton
• Drain blockage, sewer back-up, foul water escaping — Blocked Drains Merton

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

A plumber arriving for a burst-pipe call will normally locate the leak, isolate water (at the stop tap or a more local isolation valve), drain the affected section, repair or replace the failed pipework or fitting, pressure-test the repair, and leave the system back in service.

Many will give practical drying advice but most are not damp specialists or insurance loss assessors — that’s a separate workstream.

Directory-listed plumbers cannot:

• Repair the water authority’s water mains or communication pipes outside the property boundary — that’s Thames Water’s responsibility in most of Merton (Wimbledon, South Wimbledon, Colliers Wood, Raynes Park) or SES Water’s responsibility in parts of Morden, Mitcham and Pollards Hill.²² ⁵⁵
• Carry out gas work on a boiler that has been water-damaged — only a Gas Safe registered engineer competent for that appliance category can assess and carry out any gas work.⁵
• Restore notifiable electrics damaged by water — that needs a registered competent person under Approved Document P.³⁷
• Force entry into communal stack risers in mansion blocks, converted-flat buildings or estate housing — for the converted Victorian houses common across Wimbledon and the post-war estate stock in Pollards Hill and St Helier, the building manager, freeholder, managing agent or housing association controls access to shared pipework.

Availability for out-of-hours burst-pipe callouts varies by plumber. Confirm response time, call-out fee, and pricing structure when you contact them.

Water authority responsibility split

Merton sits across two water-supply company areas:

• Thames Water supplies most of Merton — Wimbledon, Wimbledon Park, South Wimbledon, Colliers Wood, Raynes Park and surrounding postcodes.
• SES Water (Sutton and East Surrey Water) supplies parts of Morden, Mitcham, Pollards Hill and bordering areas.

Check your most recent water bill if you’re not sure which supplier covers your address.

Where the leak is in the pipe network determines who fixes it. The framework below applies whether you’re on Thames Water or SES Water — the framework is the same; only the report-it number differs:

• Internal pipework inside the home — the pipework, fittings and appliances inside the property are normally the homeowner’s, landlord’s, or freeholder’s responsibility (depending on the property’s tenure and lease). A directory plumber repairs this.
• Private supply pipe — between the external stop valve and your property — this is normally the property owner’s responsibility. A directory plumber can repair or replace this; a lead-to-MDPE replacement may also need coordination with the water authority.
• Communication pipe — between the road main and the external stop valve — this is normally the water authority’s responsibility.
• Pavement or road bubbling, water emerging from drains, low pressure across the street — water authority mains.

Reporting numbers for water-supply problems:

• Thames Water: 0800 316 9800 (free, 24/7).²
• SES Water: 01737 772000 (24/7 emergency line).⁵⁴

For Thames Water customers, the pipe-responsibility split is set out in Thames Water’s pipe responsibility guidance.²² For SES Water customers, the equivalent guidance is on SES Water’s pipe-responsibility page.⁵⁵

Sewerage across the whole borough is Thames Water’s responsibility — even for properties supplied by SES Water. SES Water is water-only and does not handle sewers. For sewer-side leaks (foul water, drain back-ups, escaping waste rather than supply), see Thames Water’s sewer pipe responsibility guidance — most lateral drains and shared sewers were transferred to Thames Water on 1 October 2011.³¹ Report on 0800 316 9800.

Insurance and escape-of-water claims

Insurance handling is a practical question, not a legal one — what follows is general orientation, not advice on your specific policy. Check your insurer or policy wording for the cover that applies to you.

• Most home insurance policies cover escape-of-water damage (water-damaged ceilings, floors, walls, contents) but not always the trace and access cost of finding the leak.
• The repair to the failed pipe itself is sometimes excluded from buildings insurance and falls on the homeowner; the resulting damage is usually covered.
• Insurers typically expect you to mitigate damage as soon as possible — turn off water, drain pressure, contain spillage. Keep a diary of when you noticed the leak, when you turned the water off, and when you contacted the plumber.
• Photograph everything before the plumber arrives if it’s safe — pipes, ceiling damage, the affected area. These photos materially help the claim.
• Get a written invoice from the plumber describing the failure, the repair, and the parts replaced. Insurers ask for this.
• If the burst causes substantial ceiling damage or affects multiple flats in a block, your insurer (or the block’s insurer) may want to send a loss adjuster. The plumber’s repair work doesn’t wait for the loss adjuster — fix the leak first, claim afterwards.

For tenancies, see Section 11 of the Landlord and Tenant Act 1985 — repair to the installation for water and sanitation is likely to engage Section 11 repair duties, for tenancies covered by Section 11.¹³

Merton-specific signals

Merton’s housing stock and street pattern shape burst-pipe 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 observations are based on local trade experience and the borough’s confirmed area-by-area mix, not on official data.

Wimbledon and west Merton (SW19, SW20). Victorian and Edwardian terraces and semis dominate, with larger detached housing around Wimbledon Village and Copse Hill. Many houses have been converted into flats over the years.

In converted flats, original drainage stacks and supply pipework often serve more units than they were designed for. A burst on a shared stack or supply branch can affect multiple residents simultaneously. Older copper pipework with internal scale-thinning is the recurring failure mode.

Raynes Park and west Merton (SW20). 1930s suburban semis dominate. Plumbing systems are typically single-family with no shared stacks, but extensions and loft conversions over the decades have tied additional bathrooms and kitchens into systems originally designed for one of each.

The pipework join points between original and added work are common burst locations — particularly where a 1930s 22mm run has been transitioned to plastic push-fit at an extension boundary.

Colliers Wood and South Wimbledon (SW19). Higher density near the Northern Line and retail areas, with a mix of older terraces alongside new-build flat developments. Modern apartment blocks have pressurised supply systems and modern materials; older terraces on the same streets have legacy pipework.

Recent regeneration brings denser flat layouts with shared service risers — burst-pipe access in these blocks usually needs building-management coordination.

Mitcham and east Merton (CR4). Interwar and post-war housing estates with consistent layouts built at scale. A meaningful share of housing here is in the borough’s selective licensing wards (Figge’s Marsh, Graveney, Longthornton, Pollards Hill).⁵⁰

Higher-density occupancy puts more demand on pipework that’s typical of the period, and recurrent bursts in these wards often indicate pipework reaching end of service life rather than one-off failures.

Pollards Hill (CR4). Concentration of large estate housing, with planned drainage and supply networks serving multiple properties. Shared stack risers and supply branches serve flats and maisonettes in the post-war estate stock; access to communal pipework needs the building manager, freeholder or housing association before work can start.

Morden (SM4). 1930s suburban housing with standardised plumbing layouts typical of the period. The St Helier estate (interwar, partly in Sutton) brings large-scale planned housing with uniform supply pipework.

Mixed maintenance histories across private and social housing in the same streets mean pipework condition varies meaningfully between adjacent properties.

Motspur Park and Lower Morden (SW20 / SM4). Low-density 1930s housing with individual systems and few shared drainage issues, predominantly family homes with extensions added over time.

Hard water across the borough. Wherever you are in Merton, hard water affects boilers, taps, hot water cylinders and pipework — scale builds inside heat exchangers, on tap aerators, and inside copper pipework over years. See our London Hard Water Guide.

Conservation areas. Merton has a number of conservation areas including (among others) the John Innes (Merton Park) and John Innes (Wilton Crescent) conservation areas, both of which are subject to Article 4 directions that restrict permitted development.⁵³

Routine internal pipe repairs don’t engage these controls. Replacement of an external supply pipe along a visible elevation, or work that affects listed fabric, can; discuss visible external work with the council before scheduling.

Housing association tenants

Merton Council does not own any council housing. Following a tenants’ ballot, all the council’s former housing stock was transferred in March 2010 to Merton Priory Homes (now part of Clarion), and social housing in Merton is now provided by housing associations.⁵²

This means there’s no equivalent of a council emergency repairs line in Merton — emergency routing depends on which housing association is your landlord.

For housing-association tenants:

• Check your tenancy agreement or recent correspondence for your housing association’s emergency / out-of-hours line. Most major associations have their own 24-hour repairs number for genuine emergencies (uncontrollable leak, total loss of water, sewer flooding indoors, ceiling cascade affecting another flat).
• Directory plumbers cannot bill the housing association on your behalf.
• If you can’t reach your housing association in a real emergency, contain the situation as best you can (isolate water at the stop tap; isolate electrics if water is reaching them and you can do so safely) and contact them again as soon as the line opens.

If your housing association is not responding to a serious 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 works are your responsibility (typically internal pipework serving your flat alone) and which are the freeholder’s, managing agent’s or housing association’s (typically structure, exterior, and shared services).

A meaningful number of Merton leasehold flats are in former council blocks — following the 2010 transfer to Merton Priory Homes (now Clarion), the freeholder is often a housing association rather than a private landlord or commercial managing agent. The lease structure is typically inherited from the original council lease.⁵²

Merton Council does not have a direct role in leaseholder repair disputes.

For a burst pipe inside your flat, a directory plumber can attend. For shared pipework, stack risers serving multiple flats, or external supply / drainage that affects the building, the freeholder or managing agent (often the housing association) is the starting point — speak to them before booking work that affects shared fabric.

If your own internal pipe burst causes damage to neighbouring flats, the freeholder or managing agent may carry out emergency works to prevent further damage and may seek to recover costs, depending on the lease and circumstances. Booking your own plumber promptly when the emergency is internal to your flat reduces that risk.

Private renters and landlords

If you rent privately in Merton, your landlord (or their managing agent) is normally the first contact for a burst pipe. Repair to the installation for water, sanitation and space/water heating is likely to engage Section 11 repair duties, for tenancies covered by Section 11.¹³

In a genuine water emergency — uncontrollable leak, water reaching electrics, ceiling at risk — take action to make the property safe first (isolate water at the stop tap; if water is reaching electrics, isolate at the consumer unit only if safe to do so) and then notify the landlord or agent in writing as soon as possible.

Tenants may be liable where damage is caused by misuse or breach of tenancy terms.

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

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, current gas safety records and CO alarms. Persistent disrepair may be relevant to council enforcement or licensing action, depending on the facts. Tenants in licensed properties may also raise relevant licence-condition concerns with the council.⁵⁰

Landlords arranging a burst-pipe repair should book directly. Documenting the failure (photos, plumber’s invoice, dates) supports both the buildings insurance claim 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. Full scheme detail and the application portal are on Merton Council’s 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 (borough-wide). Planning permission is required to convert a property to a small HMO (Use Class C4) anywhere in Merton, via two Article 4 directions:⁵⁶
• 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 burst-pipe call in a licensed rental will not enforce licence conditions — that’s the council’s role — but if the visit surfaces installation problems (out-of-date gas safety records, missing CO alarms, unsafe pipework), the landlord must address those issues to remain compliant.

Indicative burst-pipe repair costs in Merton

These figures are based on typical London plumbing market rates observed across independent contractors and directories — not regulated rates and not official market data.

We are not aware of official regulated pricing data for private plumbing rates, and no UK regulatory body publishes standard plumbing rates. Prices vary by access, pipe material, day and time of call, and the scope of any associated dry-out or making-good.

Merton-specific cost factors that may push the figure up:

• Period property access. Pipework behind plaster, in cellars, or under fitted kitchens in Wimbledon and west Merton’s Victorian/Edwardian stock takes longer than open-access pipework.
• Hard-water-scaled copper. Borough-wide; where one pipe has failed because of internal scale, adjacent pipework is often in similar condition.
• Estate-housing coordination. Communal stack and supply work in Pollards Hill, St Helier and other estate housing needs the housing association or building manager to authorise access.
• Out-of-hours seasonality. Cold snaps drive London-wide demand surges; expect higher rates and longer lead times.
• Lead pipe replacement. A lead-to-MDPE supply replacement on a Merton property may need coordination with Thames Water or SES Water and a small section of pavement work — not an emergency repair, plan for it.
• Converted-flat shared stacks (Wimbledon). A burst on a shared stack from a converted house can require coordination across multiple flats before clearance work can start.

The cost of drying out and making good ceilings, floors and decoration after the leak is normally a separate workstream — handled by drying specialists and decorators, often via a buildings insurance claim.

Confirm the call-out fee, hourly rate, parts mark-up, and minimum charge when you contact the plumber.

Why directory-listed plumbers

Every plumber in our directory has been checked for identity, insurance, trading presence and Gas Safe registration where relevant before listing, and rechecked annually. Listing checks are administrative and do not replace user verification on the day.

We are not a regulator or certification body; our listing checks do not replace user verification on the day. For any gas-related work that arises (for example, a boiler check after a burst near the appliance), verify the engineer’s licence number on the Gas Safe Register at booking and on arrival, before any gas work begins, and confirm category competence for the appliance.⁵ ¹⁵

Some plumbers offer workmanship guarantees of 3, 6 or 12 months — look for the badge on the listing. Workmanship guarantees are set by individual plumbers and vary in scope; they are not standardised, and are not insurance-backed unless a plumber explicitly states otherwise.

Public liability insurance is not a statutory requirement for plumbers, but it is industry-standard and is often contractually required by clients, landlords, agents, blocks of flats or commercial sites. Evidence of public liability insurance was provided at the time of listing; users should confirm current cover with the contractor before booking.

Listing checks are completed before publication and repeated annually. Always confirm pricing, scope and call-out terms on the call before booking.

Frequently asked questions – Burst Pipes Merton

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

• Emergency Plumber Merton
• Leak Detection Merton
• Blocked Drains Merton
• Boiler Repair Merton
• Central Heating Repair Merton
• General Plumbing Merton
• Commercial Plumbing Merton

Related guides

• Find Your Stop Tap
• London Hard Water Guide
• London Plumbing Costs & Compliance Guide 2026
• How to Read a Plumbing Quote
• New Homeowner Plumbing Guide — London 2026
• Landlord Plumbing Compliance Checklist

Closing

A burst pipe in Merton turns on three things: stopping the water (find your stop tap, get it closed), getting the right repair scope onto the right pipe (compression / soldered / push-fit / cylinder / pipe replacement), and managing the boundary with Thames Water or SES Water for anything outside the property.

Frozen and scale-weakened pipework in older terraces is a common emergency profile across the borough; in Wimbledon’s converted houses and the post-war estates of Pollards Hill and St Helier, shared-pipework coordination with the building manager or housing association is the gating step.

Merton no longer has council-owned housing — housing-association tenants route through their association’s own emergency line; leaseholders book their own plumber for internal pipework with managing-agent involvement for shared fabric. 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), 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 P (electrical safety in dwellings), the Smoke and Carbon Monoxide Alarm (Amendment) Regulations 2022, Thames Water (incident guide, pipe responsibility, frozen and burst pipes, sewer pipe responsibility), SES Water (emergency contact, pipe responsibility), and Merton Council (housing advice, property licensing, Tenants’ Champion, Housing Enforcement, conservation areas, council not owning housing stock — transfer to Merton Priory Homes / Clarion in 2010).

Cost figures are indicative London-market estimates only — not regulated rates and not official market data. Merton-specific signals are observational, 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 ² Thames Water — Incident guide. https://www.thameswater.co.uk/help/incident-guide 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 ²¹ Thames Water — Frozen or burst pipes. https://www.thameswater.co.uk/help/water-and-waste-help/frozen-or-burst-pipes ²² Thames Water — Pipe responsibility. https://www.thameswater.co.uk/help/water-and-waste-help/leaks/pipe-responsibility ³¹ Thames Water — Sewer pipe responsibility. https://www.thameswater.co.uk/help/water-and-waste-help/sewer-flooding/sewer-pipe-responsibility ³⁷ GOV.UK — Approved Document P (electrical safety in dwellings). 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; Article 4 direction). 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 (Merton Council does not own any council housing; stock transferred in March 2010 to Merton Priory Homes, now Clarion). 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 ⁵⁴ SES Water — Noticed a problem (24/7 emergency line 01737 772000). https://www.seswater.co.uk/household/help-support/noticed-a-problem ⁵⁵ SES Water — Pipe responsibility (split between water authority and property owner). https://www.seswater.co.uk/household/help-support/noticed-a-problem/who-is-responsible-for-water-pipes ⁵⁶ Merton Council — Article 4 directions removing permitted development rights (borough-wide Article 4 coverage for small HMOs via two immediate directions: 2022 seven-ward direction confirmed 2023, and 24 March 2026 thirteen-ward immediate direction subject to confirmation by 24 September 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. Reviewed by the VerifiedPlumbers editorial team for regulatory accuracy. Checked against HSE, Gas Safe Register, Thames Water, SES Water and Merton Council guidance. Source links are provided within this page where relevant.