Kitchen Extension Builders in Lewisham (SE13, SE6)
Professional kitchen extension builders in Lewisham, South East London.
Why Choose All Well for Kitchen Extensions in Lewisham?
Lewisham's Victorian terraces, particularly around Lewisham High Street and towards Hither Green, are ideal for kitchen extensions that transform the classic dark rear kitchen into an open-plan living space. Many SE13 homeowners are extending to open up the back of the house and bring light into a room that has always been cramped and gloomy.
Every project comes with a fixed-price contract, single project manager, and full certification including Building Control sign-off.
Kitchen Extensions for Lewisham Properties
Lewisham is known for its victorian terraces, edwardian semis, ex-council estates. Our kitchen extensions services are tailored to these property types, ensuring results that complement the character of your home.
Postcodes we cover: SE13, SE6
Kitchen Extensions Tip for Lewisham Homeowners
Lewisham Council has Article 4 directions in some streets that remove permitted development rights, and we check this for every property before quoting. Properties near the Quaggy River or Ravensbourne corridor may sit in Flood Zone 2, requiring a Flood Risk Assessment before a planning application can be submitted. The mix of clay and gravel subsoil in SE13 generally provides stable ground conditions, but properties near the river may need deeper foundations.
Kitchen extension types for Lewisham's Victorian and Edwardian housing stock
Three patterns cover most of what we build in SE13 and SE6. The right one depends on your house type and what you're trying to achieve.
Single-storey rear extensions on SE13 Victorian terraces
The most common Lewisham project. The classic narrow terraces around Lewisham High Street, Ladywell, and the streets running off Hither Green Lane have a dark galley kitchen at the back. We extend 3–4 metres into the rear garden, take out the wall between kitchen and dining room with a 152x89 UC steel beam, and finish with bifolds across the new rear elevation. The build covers foundations on Lewisham's mixed clay and gravel (typically 1.0–1.2 metres), structural steel, glazing, electrics, plumbing, and finishes. Build time 10–14 weeks. Permitted development under Class A covers the standard 3-metre projection where Article 4 directions don't apply.
Side return and wraparound extensions on Hither Green and Lee Edwardian semis
Side return infill is common on the streets around Hither Green and Lee. The Edwardian terraces have side returns of 1.0–1.5 metres that infill with a glazed roof and steel-framed structure, covering the structural roof, party wall foundations, glazing, and finishes. Build time 8–12 weeks. A party wall agreement with the neighbouring property is required because the side return sits on the shared boundary wall. Wraparound extensions on Edwardian semis combine a 3-metre rear projection with a side return infill, creating 25–32 square metres of new open-plan space. Build time 12–16 weeks. The Edwardian semis in Hither Green and Lee Green often have cavity walls, which makes new insulation tie-in straightforward.
Planning permission, Article 4, and flood risk for kitchen extensions in Lewisham
Three Lewisham factors affect kitchen extensions and need checking before any quote. We go through all three at the survey.
Article 4 directions and conservation areas in Lewisham, Lee, and Blackheath
Lewisham has introduced Article 4 directions on a number of streets, mostly clusters around the Lewisham, Lee, and Blackheath conservation areas. Article 4 removes specific permitted development rights and requires full planning permission for changes that would otherwise be permitted. They mainly affect front-of-property changes and rarely affect rear extensions, but where Article 4 covers rear-elevation changes a full planning application is required and lead time extends from 6–8 weeks to 10–12 weeks. The Culverley Green conservation area in Catford and the Forest Hill Conservation Area also affect properties on those borders. We verify planning status on the Lewisham planning portal at the survey before quoting.
Quaggy and Ravensbourne flood zones — what SE13 homeowners need to know
Properties near the Quaggy River, the Ravensbourne, or the Pool River floodplain may sit in Flood Zone 2 or 3 and need a Flood Risk Assessment as part of the planning application for any new extension. The Environment Agency's flood risk maps confirm the zone designation. Some riverside properties also need flood resilience measures, such as raised electrical sockets and water-resistant materials in lower levels. Higher-ground streets around Brockley, Telegraph Hill, and Hither Green Hill are outside flood zones and don't need an assessment.
How the Lewisham Council planning and build process works, step by step
Lewisham Council determines full planning applications in 8–10 weeks. Permitted development under Class A covers the standard 3-metre rear projection on a terrace and 4 metres on a semi or detached, except where Article 4 directions remove the right. The Larger Home Extension prior approval process covers 4–6 metre projections on terraces and 4–8 metres on semis or detached, with an 8-week neighbour consultation. We submit a Lawful Development Certificate (£129, 6–8 weeks at Lewisham) on permitted development projects for written confirmation, which protects the property at sale time.
What's included in a fixed-price Lewisham kitchen extension contract
A Lewisham kitchen extension involves 12–15 trades over 10–16 weeks: demolition, foundations, drainage, structural steel, brick and block, roofing, glazing, plastering, electrics (NICEIC to BS 7671), plumbing, gas (Gas Safe), kitchen fitting, tiling, flooring, painting. We assign one project manager from survey through handover with photo updates throughout. Fixed-price contracts cover labour, materials, structural engineer calculations (for the steel and foundation design pack), Building Control fees at Lewisham, FENSA glazing registration, party wall surveyor coordination (Agreed Surveyor route on terraces), Flood Risk Assessment where applicable, and the Lawful Development Certificate or planning fee. Where the extension projects over a Thames Water public sewer, common on the rear of older Lewisham terraces, a Build Over Agreement is required and we handle the application, including the CCTV survey. Building Control inspections cover foundation, DPC, drainage, structural steel, insulation (Part L: U-value 0.18 W/m²K for new walls and roof), and completion.
Kitchen Extensions in Lewisham: What's Included
How I price kitchen extensions in Lewisham
I price every kitchen extensions job in Lewishamafter 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
Lewisham
“Professional team, clear communication throughout. They handled everything including Building Control sign-off.”
Verified Customer
Lewisham
Frequently Asked Questions
- How much does a Lewisham kitchen extension cost?
- It depends on the house and the work. Single-storey rear extensions of 3–4 metres on Victorian terraces are the most common Lewisham project, covering foundations, structural steel, glazing, electrics, plumbing, and finishes. Side return infill suits Edwardian terraces, and wraparound extensions work on the Edwardian semis in Hither Green or Lee. Properties near the Quaggy or Ravensbourne may need a Flood Risk Assessment, and where the extension projects over a Thames Water sewer a Build Over Agreement with a CCTV survey is required. Article 4 sites need a full planning application and add 4–6 weeks of lead time over a standard permitted development application. I confirm a fixed price after a free site visit, before any work starts.
- What are Article 4 directions and how do they affect Lewisham extensions?
- Article 4 directions are local planning rules that remove specific permitted development rights in designated streets. Lewisham has introduced Article 4 directions on clusters around the Lewisham, Lee, and Blackheath conservation areas, typically requiring full planning permission for changes that would otherwise be permitted development. They mainly affect front-of-property changes (cladding, window replacement, front-facing alterations) and rarely affect rear extensions, but where the direction covers rear-elevation changes a full planning application is required and lead time extends from 6–8 weeks to 10–12 weeks at Lewisham. We verify the planning status of each property on the Lewisham planning portal at the survey before quoting.
- Do I need a Flood Risk Assessment for a Lewisham extension?
- Possibly, depending on flood zone designation. Properties near the Quaggy River, Ravensbourne, or Pool River floodplain may sit in Flood Zone 2 or 3 and need a Flood Risk Assessment as part of the planning application for any new extension. The Environment Agency's flood risk maps confirm the zone designation, and we check this at the survey before quoting. We coordinate the assessment as part of the planning process. Some riverside properties also need flood resilience measures, such as raised sockets and water-resistant materials below 600mm. Higher-ground streets around Brockley, Telegraph Hill, and Hither Green Hill are outside flood zones and don't need an assessment.
- Why hire All Well for a Lewisham kitchen extension?
- Three reasons. First, accuracy: we know the SE13 and SE6 stock, the Article 4 boundaries, the Quaggy and Ravensbourne flood zones, the Lewisham, Lee, and Blackheath conservation areas, and the mixed clay-gravel subsoil. Second, full accreditation: NICEIC for electrical (BS 7671), FENSA for glazing, Gas Safe registered for boiler relocation, structural engineer calculations included, and Building Control sign-off included on every project. Third, fixed-price contracts: the quote doesn't change unless the specification does, including Flood Risk Assessment, Build Over Agreement, party wall surveyor fees, and any Article 4 full planning application. Office on Limes Avenue, SE20.
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 Lewisham
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