Builders & Renovation Specialists in Clapham
Kitchen extensions, loft conversions, bathrooms and full renovations in Clapham, South West London (SW4)
NICEIC, FENSA and CHAS accredited. 57+ Google reviews averaging 4.5 stars. Free site visit, fixed-price quote.
About Clapham
Clapham is one of South London's most sought-after residential areas, with Georgian terraces around Clapham Common, handsome Victorian streets in Clapham Old Town, and period conversions throughout SW4. Property values are high and homeowners expect a premium standard of workmanship — which is exactly what we deliver.
Postcodes we cover: SW4, SW11
Popular Services in Clapham
Wraparound kitchen extensions are the flagship project in Clapham, combining side return and rear extensions to create the large open-plan kitchen-diners that Clapham families demand. Loft conversions are the second most popular service, particularly L-shaped dormers on Victorian terraces that maximise headroom. We also handle a steady stream of full property renovations for buyers who purchase unrenovated period homes in Clapham and commission a complete refurbishment.
Related: full Clapham property renovation · Clapham media wall installation
Planning & Building Control in Clapham
Clapham straddles two councils — Lambeth (most of SW4) and Wandsworth (areas near Clapham Junction in SW11). Lambeth is generally supportive of rear extensions under permitted development but has specific design requirements in the Clapham Conservation Area, including restrictions on roof materials and glazing styles. The Abbeville Road and Clapham Old Town conservation areas are particularly sensitive. We always confirm the planning authority for each property and check conservation area boundaries before quoting.
Clapham Property Insights
The Georgian properties around Clapham Common are typically Grade II listed or within conservation areas, requiring Listed Building Consent for any alterations. Victorian terraces in Clapham tend to have generous ceiling heights (2.8-3.0 metres) and original features like cornicing, fireplaces, and shutters that add value when preserved during renovation. The London Clay beneath Clapham means tree roots can cause subsidence — properties near mature trees may need underpinning or deeper foundations.
Common Projects in Clapham
Wraparound kitchen extension on a Victorian terrace
The signature Clapham project. Combines a side return infill with a 4-5 metre rear extension to create a substantial open-plan kitchen-diner of 30-40 square metres. The wraparound suits the wider Victorian terraces around Abbeville Road and the Wandsworth Common side. Cost is from £75,000 including structural steelwork, foundations on London Clay (typically 1.2-1.5 metres, deeper near mature trees), glazing (Crittall-style or bifolds), electrics, plumbing, and finishes. Build time 14-18 weeks. Party wall agreements are needed with both neighbours and add 4-8 weeks to the lead time before work starts.
L-shaped dormer loft conversion
Clapham's Victorian terraces have steep pitched roofs with good standing height for L-shaped dormer conversions, which create more usable floor area than a single rear dormer by combining a rear dormer with a side dormer over the back addition. Cost is from £55,000 including structure, staircase, en-suite plumbing, electrics, plastering, and decoration. Build time 10-14 weeks. The Clapham Conservation Area imposes restrictions on visible roof alterations — rear dormers are generally accepted, front-facing dormers refused. We design to Lambeth's guidelines from the outset.
Full property renovation on a Georgian or Victorian terrace
Clapham attracts buyers commissioning full refurbishments on unrenovated period houses. Scope typically includes rewiring to BS 7671, replumbing, knocking through the ground floor, new kitchen and bathrooms, plastering, and complete decoration. Original cornicing, ceiling roses, fireplaces, and shutters are preserved and restored. Cost is from £120,000 depending on size and specification. Build time 18-24 weeks with one team. For Georgian properties (typically Grade II listed), Listed Building Consent is required before any work and we apply for it as part of the project.
Period bathroom renovation with original feature preservation
Many Clapham clients renovate bathrooms while preserving original features — cornicing, ceiling roses, sash windows, original timber doors. The work involves stripping back to brick where needed, rerouting plumbing to suit modern layouts (walk-in showers, freestanding baths, twin basins), and finishing with premium sanitaryware and large-format tiles. Cast-iron soil stack replacement is common while the wall is open. Cost is from £9,000 for a full bathroom renovation. Build time 3-6 weeks. Underfloor heating is fitted as standard on most Clapham bathrooms.
Our Services in Clapham
Kitchen Extensions
We design and build kitchen extensions that turn cramped, separate rooms into open-plan spaces you actually want to cook and eat in.
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Bathroom Fitting
Full bathroom renovations, from stripping out tired suites to fitting walk-in showers, freestanding baths, and underfloor heating.
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Side Return Extensions
That narrow alley down the side of your terrace? We turn it into usable kitchen space.
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Loft Conversions
Add a bedroom, en-suite, or home office without moving house.
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Painter & Decorator
Clean lines, sharp edges, and a finish that lasts.
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Property Renovation
Whole-house renovations managed by one team — structural work, rewiring, replumbing, kitchens, bathrooms, and decoration.
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Damp Proofing
Damp ruins walls, damages health, and knocks thousands off your property value.
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Garage Conversions
Your garage is wasted space.
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End of Tenancy Painting
Tenants out Friday, painters in Monday, keys back by Thursday.
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Media Wall Installation
We design and build bespoke media walls — the framework, the joinery, the electrics, and the finish.
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Exterior Painting & Decorating
Exterior house painting that survives the British weather.
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Dormer Loft Conversions
We build rear and L-shaped dormer loft conversions on Victorian and Edwardian terraces across South London, adding full standing headroom and a proper top-floor room.
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Mansard Loft Conversions
A mansard loft conversion rebuilds the rear roof slope to a near-vertical wall at around 70 degrees, which gains the most floor space and headroom of any loft type.
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Hip to Gable Loft Conversions
A hip to gable loft conversion squares off the sloping hip end of a roof into a vertical gable wall, gaining real width and head height across the loft.
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Velux Loft Conversions
A rooflight loft conversion keeps the existing roof shape and fits skylights into the slope.
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Bungalow Loft Conversions
Turning a single-storey bungalow into a two-storey home by building into the roof space, usually with a hip-to-gable and rear dormer that add bedrooms and an en-suite upstairs.
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Wet Room Installation
A fully tanked, level-access wet room built around the drain: gradient floor, membrane carried to ceiling height and cured, then tiled.
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Walk-in Shower Installation
Walk-in showers built with frameless glass, a low-profile tray or level access, recessed tiled niches and proper tanking behind every tile.
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Microcement Bathrooms
A microcement bathroom gives you one continuous polished cement surface across walls and floor, with no grout lines for mould to colonise.
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Luxury Bathrooms
High-specification bathrooms built around natural stone, large-format porcelain and quality brassware, with freestanding baths, underfloor heating and layered lighting set out at the design stage.
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Interior Painting & Decorating
Interior painting and decorating across South London, from a single room to a full house.
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Commercial Painting
Commercial painting for offices, shops and communal areas across South London.
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Spray Painting & Kitchen Respray
Spray painting that gives a factory-flat finish brush and roller cannot reach.
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Handyman & Property Maintenance
A reliable local handyman backed by a proper building firm.
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Gutter Cleaning
We clear blocked gutters and downpipes on terraces, semis and larger houses across South London, then check the falls and the joints while we are up there.
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Furniture & Flat-Pack Assembly
Flat-pack wardrobes, beds, chests and units built square and solid, with every fixing seated so nothing wobbles and tall pieces anchored to the wall.
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Fence Repair
Storm-damaged and rotten fences put right across South London.
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TV Wall Mounting
A TV mounted properly, fixed into studs or masonry to hold the weight, set level at the right height, with the cables run out of sight rather than left hanging down the wall.
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What Customers Say
“So happy with the work done by Les and Richard!! We bought a house that needed new paint, cracks filled, a new bathroom fan and some mold removal and they did it all. The quality of the work is phenomenal; it looks like a brand new house. We’ll definitely be hiring them for our future projects!”
Brenna Bodine
3 months ago
“So happy with Joel’s work in refurbishing my flat. There was no job too big or small for him and all done to a high standard. I won’t hesitate to use him again!”
Callum Stone
4 months ago
All Well has completed 100+ projects across 25 London boroughs since 2020. We are NICEIC approved for electrical work, FENSA registered for glazing, and CHAS certified for site safety, with Public Liability insurance to £5 million. 57+ Google reviews average 4.5 stars. All Well Property Services® is a UK registered trademark, Companies House no. 12721034, operating from Unit 1 Limes Avenue, Anerley SE20 8QR.
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Nearby Areas
Frequently Asked Questions
- Which council do I apply to in Clapham?
- Most Clapham properties fall under Lambeth Council (most of SW4), but areas near Clapham Junction in SW11 are under Wandsworth. The boundary runs roughly along Cedars Road and the railway line. We check the property's planning portal entry before any application to confirm which authority applies. Lambeth has specific design requirements in the Clapham Conservation Area, Abbeville Road conservation area, and Clapham Old Town conservation area. Wandsworth's process is generally faster for standard rear extensions. We handle the application as part of the project.
- Do I need Listed Building Consent on a Georgian property in Clapham?
- Yes, on virtually any change to a Grade II listed property. The Georgian terraces around Clapham Common are typically listed and require Listed Building Consent for alterations, including internal layout changes, removal or alteration of original features, replacement of original windows, and any external changes. Lambeth's conservation officer reviews each application individually. Application takes 8-12 weeks and runs in parallel with any planning application needed for new work. We've handled multiple Listed Building Consent applications in Clapham and know what Lambeth's officers expect.
- Why might my Clapham property need deeper foundations?
- Tree roots and London Clay. Mature trees on or near a Clapham property (particularly the plane trees around the Common and on the larger streets) extract moisture from the clay subsoil, which causes the clay to shrink and triggers subsidence. Standard foundations of 1.0 metres aren't enough on properties within 1-1.5 times tree height. The structural engineer specifies foundation depth (typically 1.5-2.0 metres or piled foundations) based on a trial hole and tree survey. Adds £4,000-£10,000 to extension cost compared with a tree-free site.
- How does parking and access work for a Clapham renovation?
- Most Clapham streets are controlled parking zones, and waste skips, scaffolding, or contractor vehicles need permits from the relevant council (Lambeth or Wandsworth). We arrange these as part of the project — typical cost from £40 per week per permit. For larger projects with concrete pumps, crane lifts, or multiple skips, we coordinate the schedule with the council to minimise disruption. Some Clapham streets have access restrictions for larger vehicles, and we sometimes use smaller vans or hand-carry materials over short distances. All of this is factored into the schedule and quote.
Get a Free Quote in Clapham
Tell us your project and we will book a free site visit, then send a fixed-price quote in writing. No obligation.