Flat Refurbishment Clapham

Flat refurbishments in Clapham, your flat renewed within the lease, the licence and the rules of the block.

Flat refurbishment is the everyday refurbishment job in Clapham, because 72% of homes here are flats. Some are floors of a Victorian house split up decades ago, some are in post-war blocks, and 11% of all Clapham homes date from 2000 or later. In each case the flat sits inside a building you share, so the lease, the managing agent, the neighbours below and the stairs up to your door shape the job as much as the kitchen or bathroom you want renewed.

For Clapham, published UK averages put a full flat refurbishment at £33,000 to £48,000 and a basic one, with budget kitchen and bathroom fittings, at £15,000 to £18,000, and London flats usually cost more (Checkatrade and MyJobQuote, 2026). GS Renovation Ltd, a building contractor based in Potters Bar, does the work in Clapham: we refurbish the flat within the terms of your lease and licence to alter, protect the common parts throughout, and a registered electrician certifies the new consumer unit and circuits.

Price guide

WorkIndicative range
Flat, full refurbishment£33,000 to £48,000
Flat, basic refurbishment£15,000 to £18,000
Full rewire, one-bed flatfrom £3,900
Consumer unit replacement£350 to £750
Sound insulation under a new floor£45 to £160 per square metre

Indicative ranges from published cost guides (Checkatrade and MyJobQuote, 2026), not a quotation. Most are UK-wide figures and London work usually costs more; a row marked London is a London figure. Prices checked September 2026.

Quick estimate from UK guide figures

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A bathroom refitted by GS Renovation with large marble-effect porcelain tiles, a wall-hung WC, a white vanity unit and a bath with a glass screen
The bathroom renewed within its existing footprint, with the pan hung on a concealed frame and the tiling carried floor to ceiling.

Which kind of Clapham flat you are refurbishing

The building decides the method, and Clapham has three broad kinds. With 58% of homes built before 1919 and 72% of homes being flats, plenty of flats here are in converted terraced houses, where floors are timber joists shared with the flat below and the stair is the old house stair. Then there are purpose-built blocks among the 34% of homes built after 1945, and newer blocks among the 11% built in 2000 or later.

A converted-house flat usually needs the most fabric work: lath ceilings, uneven floors and wiring that was split from the original house supply. A post-war block flat tends to have concrete floors, so sound travels differently and chasing for cables is slower. A newer block flat has plasterboard linings and sealed service risers that belong to the building, not to you. We note which one you have at the survey, because it changes the programme and what the freeholder will ask to see.

Housing in Clapham

By the valuation list's count, Clapham holds about 22,800 homes, 28% houses and 72% flats; by age, 58% were built before 1919, 6% between the wars and 34% since 1945.

Leases, licences to alter and block rules in Clapham

Expect to need the freeholder's written consent before work starts. The lease of a Clapham flat often reserves the structure, the joists, the windows and the shared drains to the freeholder, though alteration clauses vary from lease to lease. A licence to alter is then needed for anything that touches them, such as moving a bathroom or changing the floor build-up. The managing agent may also have house rules on working hours inside the block, lift use and where materials can be stored. Ask your solicitor to confirm what the lease says.

We prepare the method statement, drawings and programme the freeholder's surveyor asks for, and we keep to any hours the block sets even where they are tighter than Lambeth's general limits. A flat also has no householder permitted development rights, because those extension rules apply to houses only. Anything that changes the outside of the building goes through the freeholder and, where needed, a planning application made by the owner or their designer.

Letting a Clapham flat after a refurbishment

If you are refurbishing a Clapham flat to let, plan the licence and energy rating into the scope. Lambeth lists Clapham Common and Abbeville, Clapham East, Clapham Park and Clapham Town among its Phase 2 selective licensing wards, so a let flat in those wards may need a selective licence and must meet its conditions. The landlord applies to Lambeth. We work to the conditions you give us, so alarms, doors and certificates are part of the job from the start.

The energy test comes from the MEES Regulations. Since 1 April 2020 landlords can no longer let or continue to let properties covered by them with an EPC rating below E without a valid exemption, and local authorities enforce it with fines. In a converted-house flat the measures that often move the rating are draught-proofing the sashes, insulating a top-floor ceiling where the flat has the roof above it, and heating controls. They go in while the rooms are stripped.

Converted blocks, stairs and neighbours below in Clapham

Some Clapham houses that were split into flats years ago fall under Lambeth's licensing rules as a whole building. Lambeth says buildings converted entirely into self-contained flats that do not conform to the 1991 Building Regulations may require licensing if less than two thirds of the flats are owner occupied. If you own one flat in such a building, the freeholder may already be working to licence conditions on the common parts, and your refurbishment should not undo fire stopping or doors that were installed to meet them.

The day-to-day constraint is access. In a Clapham conversion the stair is narrow and shared, so we cover the treads and handrail, carry boards and plasterboard up in short lengths, and clear the landing each evening. A new bathroom above another flat gets a waterproofed floor and a pressure-tested waste before tiling, because a leak lands in someone else's ceiling. We tell the neighbours before the noisy days and give them a direct contact.

  • Boiler replacement on the flue route the building allows, by a Gas Safe registered engineer
  • Full and basic flat refurbishments within the existing layout
  • Acoustic underlays and floating floors to the lease specification
Service areaClapham · SW4
Local authorityLambeth Council and Wandsworth Council (depending on the address)
Part ofSouth London (Inner London)
Typical homesHandsome Victorian terraces near the Common, most of them now flats (72% of homes)
Housing stock58% built before 1919, 6% interwar, 34% post-war; 72% flats, 24% terraced, 4% semi-detached or detached
Also covered nearbyBrixton, Balham, Kennington, Battersea and Pimlico

VOA Council Tax stock of properties, March 2025, for all 6 statistical areas in Clapham. Counts rounded by the VOA.

Why Clapham Homeowners Choose GS Renovation

A flat refurbishment is as much about the building as the flat. We deal with the managing agent on method and access, work to the hours in your lease, protect the stairs and common parts, and keep the flat below dry. One contact runs the programme and the trades, including the registered electrician for the consumer unit and rewire. You get an itemised written quote after a survey of the flat and a programme you can send to the freeholder with your licence request.

  • The lease and licence to alter read before a flat is quoted
  • Common parts protected, photographed and handed back as we found them
  • Site left safe and secure at the end of every day
30+ YearsFounder's experience
Fully Insured5 year guarantee
4.9 / 531 MyBuilder reviews
Building ControlCompliant
Free QuotesNo obligation
Reviews

Rated 4.9 / 5 by our clients

★★★★★ 4.9 average from 31 verified reviews on MyBuilder

★★★★★
George always kept to commitments and arrived on time. He offered helpful suggestions during his initial visit and promptly provided a reasonably…
scomtottIslington, London · via MyBuilder
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We loved working with George and Ibrahim and would highly recommend them. They have done splendid job on our new kitchen refurb which including new…
kath833Wood Green, London · via MyBuilder
★★★★★
George was brilliant. Lovely bloke, very reasonably priced and a perfectionist to boot. He completed our small kitchen renovation with care and great…
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FAQ

Frequently Asked Questions about Flat Refurbishment Clapham

What should I budget to refurbish a flat in Clapham?

Use the UK range of £33,000 to £48,000 for a full refurbishment (Checkatrade and MyJobQuote, 2026) as a floor, and add for London prices and for what the block requires. The licence to alter is between you and your freeholder, so any fee they charge sits outside the building quote. The Clapham survey fixes the scope, and each trade is priced as its own line.

Does a Clapham flat refurbishment need the freeholder's permission?

For anything beyond decoration, usually yes. Many flat leases keep the structure, joists, windows and shared drains with the freeholder, so works that touch them need a licence to alter. Your solicitor or managing agent confirms the lease terms, and we supply the method statement, drawings and programme the freeholder's surveyor asks for.

Can you lay a wooden floor in an upper Clapham flat?

Often, if the lease allows it and the floor has sound insulation beneath it. In a Clapham flat carved out of a house built before 1919, the floor is timber joists shared with the ceiling below, so impact noise travels easily. Leases often require carpet or an acoustic build-up in upper flats, because hard floors carry footfall downwards. We agree the underlay or floating floor detail with the freeholder's surveyor before the finish is ordered, and check the door thresholds still close over it.

Is a rented Clapham flat in a selective licensing ward?

It may be. Lambeth lists Clapham Common and Abbeville, Clapham East, Clapham Park and Clapham Town among its Phase 2 selective licensing wards. The landlord checks the address and applies. We carry out the work to the licence conditions and can give you a programme and completion date for the application.

What EPC rating does a Clapham flat need before it is let again?

At least an E, unless a valid exemption is registered. Since 1 April 2018 private landlords may not let on new tenancies with an F or G rating, and since 1 April 2020 that has covered continuing lets too. Local authorities enforce it, with a fine per property if the rules are broken. A refurbishment is the practical time to lift the rating.

Does a new shower room in a Clapham flat need building control?

A new WC, shower or utility in a flat is building work Lambeth building control deals with, through a building notice or a full plans application. The new waste also has to reach the shared stack, which in a block is usually the freeholder's, so it goes in the licence to alter as well. We plan the fall and the connection at the survey.

Can a Clapham flat owner add a rear extension without planning permission?

No. The householder permitted development rules for extensions apply to houses only and not to flats and maisonettes, so a flat extension needs planning permission as well as the freeholder's consent. The owner or their designer applies. A flat refurbishment inside the existing footprint needs neither planning nor an extension route, only the licence to alter where the lease requires it.

How do materials get up to a top-floor flat in Clapham?

By the shared stair, carried in short lengths, at times the managing agent agrees. We protect the treads, handrail and walls first, size boards and worktops to fit the turns, and remove waste in bags the same day rather than storing it on landings. Where a lift exists, it is padded and booked. Parking for the van is arranged in advance.

What happens if refurbishment work causes a leak into the flat below?

We work to stop it happening: the new bathroom floor is waterproofed, wastes are pressure-tested before anything is tiled, and the water is isolated at the end of each day during first fix. If a leak does occur we stop work, isolate the supply, and deal with the neighbour and the managing agent directly while the repair is arranged.

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