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Supply & Fit · Tiling · Fixed Price Quotes · All 33 Boroughs

Bathroom Installation London — Full Fit-Out & Refurbishment

From a single shower replacement to a full bathroom refurbishment, Trusted Plumber London handles every stage — strip-out, first fix, tiling, sanitary ware fitting and commissioning. We provide fixed price quotes before work starts.

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Trusted Plumber London

Gas Safe registered engineers. No call-out fee on jobs over 2 hours. All 33 boroughs.

Gas Safe Registered

All gas engineers Gas Safe certified

24/7 Emergency

Engineers available every day of the year

No Call-Out Fee Over 2hrs

£60 waived on jobs exceeding 2 hours

30-Day Guarantee

All repairs guaranteed in writing

HomeBathroom Installation London

Fixed Price

No Hidden Costs

12 Month

Guarantee

Supply & Fit

Or Fit Only

WRAS

Approved

All 33

Boroughs

Bathroom Installation Services

Full Bathroom Refurbishment

Complete bathroom strip-out and refurbishment including new layout planning, first fix plumbing, boarding, tiling, sanitary ware fitting and final commissioning.

Shower Installation & Replacement

Electric shower, power shower, thermostatic mixer shower and digital shower installation. We connect to existing hot/cold supplies or run new pipework where required.

Bath & Vanity Unit Installation

Freestanding baths, panel baths, corner baths and vanity basin units fitted and connected. We reroute waste and supply pipes as needed and silicone-seal all joints.

En-Suite Installation

En-suite bathrooms in London often require new soil stack connections and cold water upgrades. We carry out full structural plumbing alongside the fit-out.

Bathroom Tiling

Floor and wall tiling to full bathroom specification. We use waterproof tile backer board, tanking membrane in wet areas, and epoxy grout in heavy-use zones.

Bathroom Accessories & Hardware

Towel rails (electric and central heating), toilet roll holders, mirror cabinets and extractor fans — sourced, fitted and commissioned as part of the installation.

How Our Bathroom Installation Process Works

We begin with a free site survey to assess the existing plumbing layout, water pressure and structural constraints. You receive a fixed-price quote covering all labour and materials before any work starts — no hidden extras.

All our bathroom installations include a 12-month workmanship guarantee covering all plumbing, tiling and fitting work. We are WRAS approved for water fittings compliance and carry full public liability insurance on every job.

London Bathroom Installation Considerations

London flat water supply pressures typically run at 2–4 bar from the mains. This is generally adequate for thermostatic mixer valves, but check the pressure at the proposed shower location before specifying a premium valve — some high-flow digital showers require a minimum 2 bar dynamic pressure.

Victorian properties with gravity-fed systems (cold water tank in the loft) frequently have insufficient head pressure for modern shower valves. We survey the cold tank position and calculate available head pressure as part of every bathroom quote on pre-1950s properties.

When converting from a gravity system to a combi boiler as part of a bathroom refurbishment, the cold water tank in the loft must be removed. Loft access and tank size affect the scope of this work — we check loft access feasibility before quoting.

London Building Control notification is required for new bathrooms added to properties (not like-for-like replacements), structural alterations to create larger bathrooms, and new soil stack connections in flats. We manage the notification process as part of the project scope for jobs that require it.

Bathroom Project Scope — What's Involved?

OptionProject TypeWhat's IncludedTypical TimeframeTypical Cost
Like-for-like bath/shower replacementDisconnect and remove existing, fit new unit, reconnect waste and supply, silicone seal1 day£350–£800 (fit only, you supply)
Shower installation (new circuit)Run new cold supply, create waste connection, fit shower tray, enclosure and valve, tile wet area2–3 days£800–£1,800 inc. standard shower
Full bathroom refurbishmentStrip-out, first fix plumbing, board/waterproof walls, tile floor and walls, fit new sanitary ware, accessories, commission5–10 days£4,000–£12,000+ depending on spec
En-suite creation (new room)Soil stack extension, cold water upgrade, first fix plumbing, full fit-out, Building Control notification7–14 days£6,000–£15,000+
Wet room conversionStructural floor preparation, tanking membrane, linear drain installation, level-access shower, full tiling5–8 days£5,000–£10,000+

London-Specific Data

Why London Properties Are Different

2–4 bar

Typical mains water pressure in London properties. This is usually sufficient for thermostatic mixer showers — but gravity-fed systems (older Victorian properties with cold tank in loft) often have insufficient pressure for premium shower valves.

64%

Proportion of London housing stock that is flats or maisonettes — the highest proportion of any UK region. En-suite and bathroom installations in flats require careful consideration of soil stack connections and neighbour impact.

1900–1939

Build era of the majority of London's terraced housing stock. These properties often have gravity-fed plumbing that needs upgrading during bathroom refurbishments, and cast iron waste stacks that need specialist connection techniques.

12 months

Our workmanship guarantee on all bathroom installations, covering all plumbing, tiling and fitting work. Manufacturer warranties on sanitary ware vary from 1–25 years depending on brand and product.

£4–£12k

Typical cost range for a full bathroom refurbishment in London, depending on property size, specification of sanitary ware and tiling, and amount of structural plumbing work required.

Coverage

We Cover All 33 London Boroughs

From Barnet to Bromley, Hillingdon to Havering — our engineers are based across London for rapid same-day response.

Frequently Asked Questions

How much does a bathroom installation cost in London?

Costs vary significantly based on scope. A shower replacement (fit-only, you supply the unit) typically costs £350–£800 for labour and waste connection. A full bathroom refurbishment — strip-out, plumbing, boarding, tiling, sanitary ware supply and fit, accessories — ranges from £4,000 for a small basic bathroom to £12,000+ for a large bathroom with premium specification. We provide a fixed-price written quote after a free site survey so you know exactly what you're paying before work starts.

How long does a bathroom installation take?

A single shower replacement takes 1 day. A like-for-like bathroom replacement (swap all the same items in the same positions without moving pipework) takes 3–5 days. A full refurbishment with new layout or tiling typically takes 7–14 days. En-suite installations requiring new soil stack connections and Building Control notification take 10–21 days. We give you a specific programme at the quote stage.

Do you supply bathroom fixtures and fittings, or do I buy them?

Both. We offer supply-and-fit (we source and supply everything) or fit-only (you buy the suite, we install it). For fit-only jobs, we recommend purchasing from trade-standard suppliers (Ideal Standard, Villeroy & Boch, Roca, Crosswater) and checking that the items are available before committing to an installation date. We can advise on spec compatibility — some premium shower valves require minimum mains pressure that London flats with gravity systems can't meet without a pump.

Do I need Building Control approval for a bathroom installation?

Most like-for-like bathroom replacements don't require Building Control notification. However, you must notify your local council if you're: installing a new bathroom where there wasn't one before; making structural alterations (removing load-bearing walls to create a larger bathroom); or installing a bathroom in a flat above ground floor where new soil stack connections are needed. We handle Building Control notification as part of our service for projects that require it.

Can you install an en-suite in a London flat?

Yes, but en-suite installation in a flat requires more planning than in a house. Key considerations: the flat's lease may require freeholder consent for structural plumbing work; any penetration of the floor slab for waste pipes requires specialist soundproofing; the soil stack connection must meet the building's drainage layout. We carry out a site survey before quoting to assess feasibility and flag any lease or structural constraints.

What is a wet room and is it suitable for London properties?

A wet room is a fully waterproofed bathroom with a level-access shower (no tray) and a linear or floor drain. It's excellent for accessibility and a clean aesthetic. In London, the main consideration is floor construction: wet rooms require a floor build-up of 150–250mm for the drainage fall, which can be problematic in older properties with suspended timber floors (which need reinforcing). Solid concrete floors are more straightforward. We assess the floor construction as part of the site survey.

My shower pressure is too low — can you fix it?

Low shower pressure in London usually has one of three causes: a gravity-fed system (cold water tank in the loft, head pressure only) where the tank is too close to the shower; a partly closed isolating valve; or scale build-up in the shower head or thermostatic valve cartridge. For gravity-fed systems, a shower pump (Grundfos, Stuart Turner) boosts pressure to 1.5–3 bar. We assess pressure before specifying a shower system — many premium showers require minimum 1.5–2 bar mains pressure.

Can you tile the bathroom as part of the installation?

Yes — we carry out full floor and wall tiling as part of bathroom installations. We use waterproof tile backer board and tanking membrane in wet areas (shower enclosures, around bath) to prevent water penetration into the wall behind the tiles. We specify epoxy grout in shower areas for better stain and mould resistance. We can work with tiles you've purchased or source them for you.

Do you remove the old bathroom suite?

Yes — strip-out and disposal of the existing bathroom is included in our full refurbishment quotes. This includes the old bath, toilet, basin, shower enclosure, and any existing tiles. We dispose of materials responsibly at licensed waste facilities. For fit-only jobs where we're replacing specific items, we take away the removed items as part of the job.

How do I choose between a combi boiler and a system boiler for a new bathroom?

If you have a combi boiler (no hot water cylinder), a new en-suite or additional bathroom creates higher simultaneous hot water demand. A single combi boiler can typically supply 2–3 simultaneous outlets. If you're adding a second bathroom to a property with a combi, we assess whether your current combi model has sufficient output or whether an upgrade or system boiler conversion is needed. System boilers with an unvented cylinder can supply unlimited simultaneous outlets at mains pressure — the right choice for larger London properties with 3+ bathrooms.

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Same-day engineers across all 33 London boroughs. Gas Safe registered. No call-out fee on jobs over 2 hours.

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Need a Plumber Right Now?

Gas Safe registered. No call-out fee when the job runs over 2 hours. All 33 London boroughs.

📞 Call 020 0000 0000