Kitchen Extension Builders in Clapham (SW4, SW11)
Professional kitchen extension builders in Clapham, South West London.
Why Choose All Well for Kitchen Extensions in Clapham?
Clapham families love their kitchen extensions, and we get it. The houses are gorgeous but the kitchens were designed for a Victorian household with servants, not for a family who wants to cook, eat, and live in one space. We've built wraparound extensions on the big terraces near Clapham Common, compact rear extensions on the tighter streets off Abbeville Road, and everything in between. Whatever the size of your plot, we'll find the best way to open up your ground floor.
Every project comes with a fixed-price contract, single project manager, and full certification including Building Control sign-off.
Kitchen Extensions for Clapham Properties
Clapham is known for its georgian and victorian terraces, period conversions. Our kitchen extensions services are tailored to these property types, ensuring results that complement the character of your home.
Postcodes we cover: SW4, SW11
Kitchen Extensions Tip for Clapham Homeowners
Most of Clapham sits in one of Lambeth's conservation areas: the Clapham Conservation Area around the Common and Old Town (CA01), Abbeville Road (CA30), Clapham Park and Northbourne Road (CA17), and Clapham High Street (CA22). The designation carries an Article 4 direction that removes some permitted development rights for visible, front-facing changes. A rear or side-return extension that isn't seen from the street can usually still go ahead under permitted development, confirmed with a Lawful Development Certificate, even inside the conservation area. The far western streets towards Clapham Junction fall under Wandsworth rather than Lambeth. We check your property's exact designation on the council planning portal at the survey before quoting, and where you're near the mature plane trees on the Common we allow for deeper foundations, because London Clay shifts when tree roots dry it out.
Kitchen extension types in Clapham SW4
Three patterns cover most of what we build in SW4 and SW11. The right choice depends on your plot width, garden depth, and how much ground-floor space you actually need.
Wraparound and rear-only extensions on Clapham's Victorian terraces
Wraparound extensions are the flagship Clapham project. Combining a side return infill with a 4–5 metre rear extension creates a substantial open-plan kitchen-diner of 30–40 square metres, well suited to the wider Victorian terraces around Abbeville Road and the streets towards Wandsworth Road. The work covers structural steelwork, foundations on London Clay (1.2–1.5 metres typical, deeper near mature plane trees on the Common), Crittall-style glazing or bifolds, electrics, plumbing, and finishes. Build time 14–18 weeks. Rear-only extensions of 3–4 metres work on tighter streets where the side return is too narrow to gain meaningful space, with a build time of 12–14 weeks. Wandsworth's permitted development process covers the standard 3-metre rear extension on terraces without a planning application.
Side return extensions and party wall obligations in Clapham
Side return-only extensions are less common but useful when the rear garden is shallow or planning rules limit rear projection. Build time 8–12 weeks. Because the side return shares a boundary wall, party wall agreements with the neighbouring property are required on every side return project. We handle the notices and coordinate with the surveyor as part of the contract.
Specification and materials for Clapham kitchen extensions
Clapham clients typically specify premium materials and finishes. We're set up for that. The supply chain and trade accounts we use are the same ones you'd find on a high-spec Lambeth project.
Glazing, kitchen units, and underfloor heating in SW4
Glazing is usually Crittall-style steel-frame doors and screens on wraparound and side return extensions, with roof lanterns from Atlas or Lonsdale providing overhead light. Sliding doors (Schuco or Origin) or bifolds are the most common rear-elevation choice. All frames are thermally broken aluminium, double or triple glazed to U-value 1.2–1.4 W/m²K, and FENSA-registered on completion. Kitchen units are Howdens for the mid-range or bespoke joinery for higher specifications. Worktops run to engineered stone (Caesarstone, Silestone) or natural stone for premium projects. Underfloor heating is standard on the new extension slab and is often extended to the existing kitchen-dining area at the same time. Electrics are signed off by our NICEIC-registered electrician to BS 7671 standards. Gas and plumbing connections are covered under Gas Safe regulations. Building Control inspections and FENSA glazing registration are included in every project. The completion certificate is what proves compliance when you sell or remortgage. Fixed-price contracts cover labour, materials, structural engineer calculations, all fees, and Building Control. Written quote within 48 hours of the survey.
Planning permission for kitchen extensions in Clapham's conservation areas
Clapham straddles two councils and sits heavily inside designated conservation areas. Getting the authority and consent type right from the start saves several weeks.
Lambeth and Wandsworth: which council covers your Clapham property
Most of SW4 falls under Lambeth Council; the streets near Clapham Junction in SW11 are under Wandsworth. The boundary runs roughly along Cedars Road and the railway line. Lambeth has specific design requirements in the Clapham Conservation Area (CA01), the Abbeville Road conservation area (CA30), and the Clapham Old Town conservation area (CA22). Wandsworth's process is generally faster for standard rear extensions. We check the property's exact planning portal entry before quoting any extension that needs consent. You won't be dealing with two parallel processes.
Listed Building Consent and deep foundations near Clapham Common
Georgian properties around Clapham Common are typically Grade II listed and need Listed Building Consent for any extension or alteration. Lambeth's conservation officer reviews each application individually; allow 8–12 weeks, running in parallel with planning. We work with conservation-specialist architects on listed projects. Foundation depths vary with proximity to mature trees. The plane trees around Clapham Common extract moisture from London Clay, causing shrinkage that can trigger subsidence on properties within 1–1.5 times tree height. Standard 1.0-metre foundations aren't enough on tree-affected sites. The structural engineer specifies 1.5–2.0 metre or piled foundations based on a trial hole and tree survey where trees are a factor. That specification is confirmed before we issue the contract. Most Clapham streets are controlled parking zones. Skip permits, scaffolding licences, and contractor vehicle access are coordinated with Lambeth or Wandsworth. We arrange these as part of every project.
Kitchen Extensions in Clapham: What's Included
How I price kitchen extensions in Clapham
I price every kitchen extensions job in Claphamafter I’ve seen it. No two properties are the same, so a number here would only mislead you. What you get instead is a fixed-price contract, a week-by-week programme, and no costs that turn up later.
Get a fixed quoteWhat Our Customers Say
“All Well managed our project from start to finish. The fixed-price contract meant no surprises, and the result is stunning.”
Verified Customer
Clapham
“Professional team, clear communication throughout. They handled everything including Building Control sign-off.”
Verified Customer
Clapham
Frequently Asked Questions
- How much does a Clapham kitchen extension cost?
- It depends on the type of extension and the specification you choose. Wraparound extensions on the wider terraces are the most common Clapham project, combining a side return infill with a rear extension to create a large open-plan kitchen-diner. Rear-only extensions of 3-4 metres suit tighter streets, and side return-only extensions work where the rear garden is shallow. Clapham work usually carries deeper foundations because of the mature plane trees, and clients here tend to choose premium specifications. We provide a fixed-price contract after a free site visit. The price doesn't change unless the specification does.
- 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, and Clapham Old Town conservation areas. Wandsworth's process is faster for standard rear extensions. We handle the application as part of every project rather than asking you to navigate two parallel processes.
- Do I need Listed Building Consent on a Georgian Clapham property?
- 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 planning. We've handled multiple Listed Building Consent applications in Clapham and know what Lambeth's officers expect.
- Why should I hire All Well for a Clapham kitchen extension?
- Four reasons. First, fixed-price contracts: projects across 25 London boroughs since 2020 means we price accurately and absorb our own surprises. Second, single project manager from survey to handover, with photo updates throughout the build. Third, full accreditation: NICEIC for electrical (BS 7671), FENSA for glazing, Building Control sign-off included on every project, and structural engineer calculations included. Fourth, our office on Limes Avenue, SE20, is 25 minutes from most Clapham properties for surveys, mid-job decisions, and post-completion snagging.
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.
Kitchen Extensions Near Clapham
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