Kitchen Extension Builders in Wandsworth (SW18)
Professional kitchen extension builders in Wandsworth, South West London.
Why Choose All Well for Kitchen Extensions in Wandsworth?
Wandsworth town has a mix of Victorian terraces near the Common and larger period houses towards the river, both of which are ripe for kitchen extensions. The terraces follow the standard South London pattern, separate kitchen, separate dining room, both too small, while the bigger houses often have kitchens that are large enough but dated and disconnected from the garden. Either way, a rear extension with bifold doors is the answer, and we've built enough of them in SW18 to know exactly what works.
Every project comes with a fixed-price contract, single project manager, and full certification including Building Control sign-off.
Kitchen Extensions for Wandsworth Properties
Wandsworth is known for its victorian terraces, riverside developments, period houses. Our kitchen extensions services are tailored to these property types, ensuring results that complement the character of your home.
Postcodes we cover: SW18
Kitchen Extensions Tip for Wandsworth Homeowners
Wandsworth Council is known for being business-friendly and efficient with planning applications. The Wandsworth Common conservation area has design guidelines, but most streets in SW18 are outside it and standard permitted development applies. Properties near the Wandle river may be in Flood Zone 2, this doesn't prevent an extension but requires a Flood Risk Assessment. The clay and gravel mix in Wandsworth provides reasonable ground conditions, though properties near the Thames need deeper foundations due to higher water tables.
Kitchen extension types for Wandsworth's Victorian terraces and riverside houses
Three patterns cover most of what we build in SW18. The housing stock divides roughly into Victorian terraces around the Common and Earlsfield, and larger period houses closer to the river, each with its own extension type.
Single-storey rear and wraparound extensions in SW18
Single-storey rear extension on a Victorian terrace is the most common. The terraces around Wandsworth Common, Earlsfield, and Magdalen Road have classic dark galley kitchens that get transformed by 4-5 metre rear extensions with bifold doors and roof lanterns. The work covers structural steelwork, foundations on Wandsworth's mixed clay and river gravel (typically 1.0-1.5 metres deep), glazing, electrics, plumbing, and finishes. Build time 12-14 weeks. Wraparound extensions combine a side return and a deep rear garden into a substantial open-plan kitchen-diner. Build time runs 14-16 weeks. The Wandsworth Common conservation area imposes additional design requirements, but Wandsworth's planning team typically approves rear-and-side extensions with appropriate materials.
Side return extensions on terraces between Wandsworth High Street and the river
Side return extension is the second pattern, common on the wider terraces between Wandsworth High Street and the river that have side passages of 1.0-1.5 metres. Combined with knocking through the existing kitchen wall, the result is a wider open-plan kitchen-diner without giving up garden space. Build time 8-12 weeks. Party wall agreements with the neighbouring property are required because the side return shares a boundary wall.
Foundations and flood risk for SW18 properties near the Thames and Wandle
Wandsworth's subsoil varies depending on proximity to the Thames and the Wandle. We check ground conditions and flood zone designation at the survey stage, before quoting.
What flood zones mean for a Wandsworth kitchen extension
Properties within 200-300 metres of the Thames or in the lower-lying areas around the Wandle (mostly in Flood Zone 2 or 3) need a Flood Risk Assessment as part of the planning application. The Environment Agency's flood risk maps confirm the zone designation, and we coordinate the assessment as part of the planning process. Some Wandsworth riverside properties also need flood resilience measures, raised electrical sockets and water-resistant materials in lower levels, which we build into the design.
Foundation depths across different parts of Wandsworth
Properties near Wandsworth Common have standard London Clay foundations at 1.0-1.2 metres. Properties closer to the river or near mature trees may need 1.2-1.5 metres or piled foundations. The gravel deposits along the Wandle and Thames corridors have higher load-bearing capacity than London Clay but can be variable in depth, we do a trial hole investigation on those properties to give the structural engineer the data needed to specify the right foundation. Properties around Wandsworth Common itself have well-drained gravel and chalk subsoil with shallower requirements, though mature trees on the Common can affect foundations on adjacent properties, which we factor into the design.
London Borough of Wandsworth planning and Building Control, what to expect
Wandsworth Council is regarded as one of London's most efficient planning departments. Permitted development covers the standard 3-metre rear extension on terraces (4 metres on semis). We submit a Lawful Development Certificate (£129, 6-8 weeks at Wandsworth) for written confirmation, which protects the property at sale.
Full planning, conservation areas, and Wandsworth's design guidance
Larger extensions need full planning. Wandsworth typically determines applications in 8-10 weeks, faster than the 13-week statutory limit, and publishes design guidance that makes it straightforward to design within accepted parameters. The Wandsworth Common, Old Wandsworth, and Earlsfield conservation areas have additional requirements for visible alterations, front-facing changes are generally refused; rear extensions are usually approved with appropriate materials. We design to Wandsworth's published guidelines from the outset, and use the council's pre-application advice service for borderline cases. All glazing is FENSA-registered to U-value 1.2-1.4 W/m²K. Electrical work is signed off under BS 7671 by our NICEIC-registered electrician. Building Control inspections happen at foundation, drainage, structure, insulation, and completion stages, and the completion certificate is delivered at handover. Fixed-price contracts cover labour, materials, structural engineer calculations, FENSA registration, planning fees, Building Control fees, party wall surveyor coordination, and any conservation area or Flood Risk Assessment requirements.
Kitchen Extensions in Wandsworth: What's Included
How I price kitchen extensions in Wandsworth
I price every kitchen extensions job in Wandsworthafter 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
Wandsworth
“Professional team, clear communication throughout. They handled everything including Building Control sign-off.”
Verified Customer
Wandsworth
Frequently Asked Questions
- What kitchen extension types suit a Wandsworth property?
- Three patterns cover most of SW18. Single-storey rear extensions of 4-5 metres open up the dark galley kitchens on Victorian terraces around the Common, Earlsfield, and Magdalen Road. Side return extensions suit the wider terraces between Wandsworth High Street and the river, turning a narrow side passage into a wider open-plan kitchen-diner. Wraparound extensions on the larger period houses combine a side return and rear extension into a substantial kitchen-diner. We confirm which pattern fits at the survey, along with foundation depth and flood zone designation. Fixed-price contract after the survey, and the price doesn't change unless the specification does.
- Why is Wandsworth Council known as a good planning authority?
- Three reasons. First, fast turnaround times, Wandsworth typically determines permitted development applications in 4-6 weeks rather than the 8-week statutory limit, and full planning applications come back in 8-10 weeks rather than the typical 13. Second, clear guidance, the council publishes design guides for extensions, dormers, and conservation area work that make it straightforward to design within their accepted parameters. Third, a useful pre-application advice service for borderline cases.
- Do I need a Flood Risk Assessment for a Wandsworth extension?
- Possibly, depending on flood zone designation. Properties in Flood Zone 2 or 3 (mostly within 200-300 metres of the Thames or the Wandle) 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. Properties on higher ground around Wandsworth Common are usually outside flood zones and don't need an assessment.
- Why hire All Well for a Wandsworth kitchen extension?
- Three reasons. First, accuracy: we know the SW18 stock, typical foundation depths near the Wandle and Thames, the Wandsworth Common conservation area, and the council's fast permitted development process. Second, full accreditation: NICEIC electrical (BS 7671), FENSA glazing, Gas Safe boiler work, structural engineer calculations, 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 and any flood resilience measures. 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 Wandsworth
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