A bathroom refit is where the quiet plumbing rules suddenly matter — notification, ventilation, waste falls, fittings compliance. Get them right at the start and the bathroom lasts; skip them and the problems surface behind the tiles.

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

Bathroom work ranges from a tap-and-seal afternoon to a full strip-out — ask for an itemised quote, and whether the price includes making good after.

Contact verified plumbers in Ealing ↓

Coverage: W3, W5, W7, W13, UB1, UB2, UB5 and UB6, plus the NW10 fringe around North Acton and Park Royal.
What this covers: basins, baths, showers, WCs, taps and mixers, waste and supply pipework, sealing, and full bathroom refits — the wet side of the room.
Not this page: a single running toilet is toilet repairs; a hidden leak behind a finished wall is leak detection; a blocked waste is blocked drains.
Costs: anything from an hour to a multi-day refit — see what it costs.
Availability: refits are planned work — book ahead; a leaking refit-in-progress is a different urgency.

Jump to: What bathroom plumbing covers · The rules that bite on a refit · Hard water and your new bathroom · Ealing bathrooms · By district · Costs · FAQs

What bathroom plumbing actually covers

Bathroom plumbing is the wet half of a room that also involves tiling, electrics and sometimes building work. The plumbing scope: supplying and connecting basins, baths, showers and WCs; running and altering hot and cold supplies; getting waste pipework right (the unglamorous part that decides whether the room works); fitting taps, mixers and shower valves; and sealing everything so water goes where it should and nowhere else. On a refit, the plumber’s sequence interleaves with the tiler’s and often an electrician’s — which is why coordination, not just competence, separates a good bathroom job from a snagging nightmare.

The two failure points worth knowing about before you start: waste falls and connections — a shower tray or bath that drains slowly, gurgles or smells is almost always a waste-pipe fall or trap problem set at first fix, invisible until the room’s finished — and sealing and waterproofing, where the difference between a silicone bead and proper tanking under a tiled wet area is the difference between a dry ceiling below and a leak that surfaces months later. In Ealing’s many converted and upper-floor flats, that downstairs ceiling is someone else’s.

A practical safeguard worth asking for: that the plumber tests waste joints and flood-tests wet areas before anything is boxed in or tiled, confirms hot and cold isolation, and photographs the hidden pipework. Those few steps at first fix are what make a future repair possible without ripping out the finished room.

The rules that bite on a refit

Most bathroom jobs are routine, but a refit can cross lines worth knowing about up front.

Notification. Under the Water Supply (Water Fittings) Regulations, some installations must be notified to your water company before work starts, with the undertaker having ten working days to respond. WaterSafe lists the notifiable items — relevant to bathrooms: a bath holding more than 230 litres, and a bidet with an ascending spray or flexible hose; others include pumps or boosters delivering more than 12 litres a minute and reverse-osmosis units.¹ A big freestanding bath or a powerful shower pump in an Ealing refit is exactly where this applies — worth raising with your plumber at quote stage.

It’s worth being precise about what using an approved contractor does and doesn’t change. Under Regulation 5, the prior-notification requirement is waived only for an approved contractor installing a narrow set of fittings — broadly non-household extensions or alterations, ascending-spray/flexible-hose bidets, and backflow-prevention (RPZ) devices.² A bath over 230 litres, a pump or booster over 12 litres a minute, and a reverse-osmosis unit still require prior notification regardless of who fits them. What an approved contractor does provide is a certificate of compliance — which, under the Regulations, gives the householder a legal defence showing the work met the requirements.³ In split-supply Ealing, any notification goes to whichever company supplies the property: the council’s Infrastructure Delivery Plan maps drinking water as Affinity Water across much of the west and Thames Water in the east.⁴

Fittings compliance. Water-supply fittings and water-using appliances connected to the public supply must meet the Water Supply (Water Fittings) Regulations 1999 — appropriate quality and standard, suitable for the circumstances, installed in a workmanlike manner⁵ — with WRAS certification one recognised way to demonstrate compliance⁶, alongside equivalents such as NSF REG4⁷ and Kiwa KUKreg4⁸. The waste side of the bathroom — the wastewater pipework from baths, basins, showers and WCs — sits outside the Water Fittings Regulations and falls instead under Building Regulations, but getting it right is no less important.

The electrical line. Anything electrical in a bathroom — a shower, extractor, heated towel rail, lighting, the supply itself — falls under Part P of the Building Regulations, which covers electrical safety in dwellings, and is a qualified electrician’s work, not a plumber’s.⁹ A good bathroom plumber works hand-in-glove with a qualified electrician and is clear about where their own work stops.

Renting? Bathroom installations for water and sanitation are the landlord’s repairing responsibility under Section 11 of the Landlord and Tenant Act 1985¹⁰; council tenants use Ealing Council’s repair routes — 0800 181 744 or 020 8825 5682 out of hours.¹¹

Hard water and your new bathroom

A new bathroom in Ealing is a new bathroom in hard water, and that should shape the choices. Both of the borough’s suppliers confirm it — Affinity Water attributes its hardness to chalky-limestone groundwater¹² and Thames Water says the same of its region¹³, with the Drinking Water Inspectorate linking hardness to scaling in water systems and appliances¹⁴.

For a refit, that argues for serviceable choices over showroom ones: shower valves and cartridges that can be descaled and replaced rather than sealed units, glass and screens you’re willing to maintain, and thermostatic shower valves chosen with scale in mind. Pressure shapes the choice too — a combi-fed mixer, a gravity-fed system or a pumped supply each suit different valves, and a pressure-balanced or thermostatic valve behaves differently on each — so the right shower depends on the system behind it, not just the look. Scale is also the slow killer of the parts you can’t see — the shower’s flow regulator, the mixer cartridges — so the maintenance-friendly bathroom is the one still working in ten years.

Ealing bathrooms: the building context

Two features of Ealing’s housing shape bathroom work more than the fittings do. First, flats and conversions: in the borough’s many converted period houses and upper-floor flats, a bathroom sits above someone else’s ceiling. In a converted W5 or W13 flat, a failed shower-tray seal, a bad waste connection or a tanking failure can stay invisible until it stains the ceiling of the flat below — which is why the waterproofing and waste detail, not the tiling, is where the money should go. Before opening walls in estate flats or purpose-built blocks, it’s also worth confirming whether isolation valves, risers, soil stacks or boxing are communal, and whether the freeholder or block manager must approve access. Second, older houses with bathrooms added later: many of Ealing’s Victorian and Edwardian homes gained bathrooms in spaces never designed for them — over-long waste runs, awkward falls, soil-stack connections through original structure — so a refit in older stock is as much about correcting inherited compromises as installing new white goods. Where a bathroom or WC has been added far from the soil stack — a loft conversion or a back addition — a macerator (Saniflo-style) unit may be involved, which needs its own diagnosis and isn’t a like-for-like swap with a standard pan.

Both point the same way: in this borough, the diagnosis and first-fix decisions matter more than the showroom catalogue. A bathroom plumber who asks where the waste runs and what’s below the floor before talking taps is the one to trust.

Find a verified bathroom plumber by district

Bathroom plumbing is less postcode-bound than drains or emergencies — a shower valve fits the same way everywhere. What changes across Ealing is the building around the bathroom:

Acton (W3, parts NW10). Period terraces with bathrooms added into back additions, where waste falls and soil connections are the real job; the new Acton Gardens blocks¹⁵ instead bring modern wet-room and concealed-fitting conventions — and concealed cisterns and tiled access panels can make later repairs expensive unless access is designed into the refit from the start.

Ealing (W5, W13). Conversion territory — and the borough’s prime “your bathroom, their ceiling” zone. Waterproofing and waste connections in a W5 upper-floor flat deserve the careful end of the trade, because the cost of getting them wrong lands downstairs.

Greenford (UB6, parts UB5) and Northolt (UB5). Interwar and post-war homes, many with original bathroom layouts ripe for sensible modernising; in estate flats, confirm what’s communal before opening walls.

Hanwell (W7). Older houses where bathrooms were retrofitted into period structure — expect awkward waste routing and the occasional inherited compromise a good refit can finally correct.

Perivale (UB6). Interwar homes whose original bathrooms may be on decades-old pipework — a refit is the moment to renew what’s behind the wall, not just what’s on it.

Southall (UB1, UB2). In extended or heavily used households, wherever they occur in the area, a second bathroom or a hard-worked family bathroom needs careful waste and supply planning — exactly the kind of work worth getting a verified plumber to design rather than improvise.

What it costs

Bathroom pricing spans the widest range on this site — a tap swap to a full refit — so the quote detail matters more than the headline number. Ask for itemisation (labour, materials, who supplies the suite), whether tiling and making-good are included or separate trades, and how the plumber coordinates with the electrician and tiler.

Editorial estimate only, for orientation. These are NOT regulated rates, NOT market data and NOT a published cost survey — a full refit’s total depends heavily on tiling, suite choice and making-good. Always get an itemised written quote.

There is no official price list for bathroom work in Ealing. Local cost context: Ealing is inside London’s ULEZ¹⁶, and the council’s infrastructure evidence records half the borough’s road network as covered by controlled parking zones⁴ — a multi-day refit may carry several days of contractor parking, reasonably itemised on the quote. For reading any quote line by line, see how to read a plumbing quote.

Frequently asked questions

Why verified plumbers — not a general directory

A bathroom refit is a four-figure job hidden behind tiles within a month — by the time a waterproofing shortcut or a bad waste fall shows itself, the trader who did it is long gone. That’s why every listing here is checked before going live and re-verified annually: we confirm the business is legitimately trading and verify the named contact, we check evidence of public liability insurance, and we confirm the plumber covers Ealing’s W and UB postcodes before a profile is approved.

The supply-side fittings in a bathroom are water-fittings work — you can look any plumber up yourself on WaterSafe, the free, water-industry-backed national register, whose approved members can also certify that their work complies. For the electrical side, expect a separate qualified electrician; where any gas appliance is moved or involved, we confirm registration directly with the Gas Safe Register. Profiles may be suspended or removed if credentials lapse or credible concerns are raised — see the full verification process →

There’s no pay-to-play ranking of listings and no customer middleman fee: enquiries go directly to the plumber.

Related areas

Verified bathroom plumbers across Ealing’s neighbourhoods, including:

• Acton
• Brentham Garden Suburb
• Central Greenford
• Dormers Wells
• Ealing Broadway
• Ealing Common
• East Acton
• Greenford
• Greenford Broadway
• Hanger Hill
• Hanwell
• Hanwell Broadway
• Lady Margaret
• Montpelier
• North Acton
• North Ealing
• North Greenford
• North Hanwell
• Northfields
• Northolt
• Northolt Mandeville
• Northolt West End
• Norwood Green
• Perivale
• Pitshanger
• South Acton
• South Ealing
• Southall
• Southall Broadway
• Southall Green
• Southall West
• Walpole
• West Ealing

Related services

Other verified plumbing services in Ealing:

• Emergency Plumber in Ealing
• Burst Pipes in Ealing
• Leak Detection in Ealing
• Blocked Drains in Ealing
• Toilet Repairs in Ealing
• Tap Repair & Installation in Ealing
• General Plumbing in Ealing
• Kitchen Plumbing in Ealing
• Washing Machine & Dishwasher Installation in Ealing
• Boiler Repair in Ealing
• Boiler Installation in Ealing
• Boiler Servicing in Ealing
• Central Heating Repair in Ealing
• Commercial Plumbing in Ealing

Related guides

• London Hard Water — The Complete Homeowner & Landlord Guide 2026
• London Plumbing Costs & Compliance Guide 2026
• How to Read a Plumbing Quote — A London Homeowner’s Guide 2026
• Victorian Terrace Plumbing Guide — London 2026

A bathroom in Ealing is built on the parts you can’t see: the waste falls, the waterproofing, the compliant fittings, the notification where it’s needed. Get those right and the room lasts decades; the verified plumbers listed above are the ones who start there rather than at the showroom.

Contact verified plumbers in Ealing ↑

← Back to all plumbing services in Ealing

Last reviewed: June 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 the regulations and bodies cited on this page, including the Water Supply (Water Fittings) Regulations 1999, Part P of the Building Regulations, Section 11 of the Landlord and Tenant Act 1985, WaterSafe, Thames Water, Affinity Water, the Drinking Water Inspectorate, Ealing Council and Transport for London. Source links are provided within this page where relevant.

Sources & further reading

1. WaterSafe (do I need to notify my water supply company of planned plumbing work) — https://www.watersafe.org.uk/advice/hiring_a_plumber/planning_your_plumbing_work/do_i_need_to_notify_my_water_supply_company_of_planned_plumbing_work/
2. Water Supply (Water Fittings) Regulations 1999, Regulation 5 (notification; approved-contractor exemption) — https://www.legislation.gov.uk/uksi/1999/1148/regulation/5
3. Water Supply (Water Fittings) Regulations 1999, Regulation 7 (penalty; approved-contractor certificate defence) — https://www.legislation.gov.uk/uksi/1999/1148/regulation/7/made
4. Ealing Council Infrastructure Delivery Plan, Part One: Infrastructure Baseline Report, Feb 2024 (water supply split; CPZ coverage) — https://www.ealing.gov.uk/download/downloads/id/19508/part_one_infrastructure_baseline_report.pdf
5. Water Supply (Water Fittings) Regulations 1999 — https://www.legislation.gov.uk/uksi/1999/1148/contents/made
6. WRAS (how to demonstrate compliance to Regulation 4) — https://www.wrasapprovals.co.uk/news/articles/compliance1/
7. NSF (NSF REG4 certification — Water Supply (Water Fittings) Regulations compliance) — https://www.nsf.org/water-systems/regional-certification-approvals/uk-approvals-certifications/nsf-reg4-certification
8. Kiwa (KUKreg4 — demonstrating Water Supply (Water Fittings) Regulations 1999 compliance) — https://www.kiwa.com/gb/en-gb/insights/stories/water-regulation-4-compliance—dispelling-the-myth-of-wras-approval/
9. GOV.UK (Approved Document P — electrical safety in dwellings) — https://www.gov.uk/government/publications/electrical-safety-approved-document-p
10. Landlord and Tenant Act 1985, Section 11 (landlord repairing obligations) — https://www.legislation.gov.uk/ukpga/1985/70/section/11
11. Ealing Council (reporting a housing repair) — https://www.ealing.gov.uk/info/201093/repairs_-_council_property/2742/reporting_a_housing_repair
12. Affinity Water (water hardness) — https://www.affinitywater.co.uk/water-quality/hardness
13. Thames Water (hard water) — https://www.thameswater.co.uk/help/water-and-waste-help/water-quality/hard-water
14. Drinking Water Inspectorate (hardness and scaling) — https://www.dwi.gov.uk/consumers/learn-more-about-your-water/water-hardness-hard-water/
15. Ealing Council (South Acton Estate regeneration) — https://www.ealing.gov.uk/info/201104/housing_regeneration/377/south_acton_estate
16. Transport for London (Ultra Low Emission Zone) — https://tfl.gov.uk/modes/driving/ultra-low-emission-zone