Kitchen Extension Builders in Anerley (SE20)
Professional kitchen extension builders in Anerley, South East London.
Why Choose All Well for Kitchen Extensions in Anerley?
Anerley is our home borough — our office is on Limes Avenue, SE20. We have completed more kitchen extensions in Anerley than any other area, and we know the housing stock inside out. The Victorian terraces along Anerley Road and the Edwardian semis around Anerley Hill both benefit from rear extensions that open up the ground floor into modern kitchen-diners.
Every project comes with a fixed-price contract, single project manager, and full certification including Building Control sign-off.
Kitchen Extensions for Anerley Properties
Anerley is known for its victorian terraces, edwardian semis, period conversions. Our kitchen extensions services are tailored to these property types, ensuring results that complement the character of your home.
Postcodes we cover: SE20
Kitchen Extensions Tip for Anerley Homeowners
Anerley properties are under Bromley Council planning, and the area has no conservation zone restrictions — permitted development rights are widely available for single-storey rear extensions up to 3 metres (terraced) or 4 metres (detached). The mixed clay and gravel subsoil in SE20 means foundation depths typically range from 1.0 to 1.3 metres. Being local, we can visit your property the same day you enquire and often provide a quote within 48 hours.
What an Anerley kitchen extension typically covers
Three patterns cover most of what we build in SE20. Single-storey rear extension on a Victorian terrace is the most common Anerley project. The terraces along Anerley Road, Anerley Park, and the streets running between Anerley and Penge stations have a dark rear kitchen separated from a small dining room by a structural wall. We extend 3-4 metres into the rear garden, take out the internal wall with a slimline steel beam (typically 152x89 UC for the typical span), and finish with bifold doors or a slider across the back. Cost is £45,000-£70,000 including foundations, steelwork, glazing, electrics, plumbing, and finishes. Build time 10-14 weeks. Permitted development covers the 3-metre projection on terraces under Class A. Side return infill on a wider mid-Victorian terrace is the second pattern. A few of the streets near Anerley Hill have side returns of 0.9-1.2 metres which infill neatly with a glazed roof and a steel-framed structure tied into the existing party wall. Cost is £30,000-£50,000. Build time 8-10 weeks. Party wall agreement with the neighbouring property is required because the side return is built off the shared boundary wall. Wraparound extension on an Edwardian semi is the third pattern, common on the streets around Anerley Hill where the semis have larger plots and side access. Combining a 3-metre rear projection with a side return infill creates an open-plan kitchen-diner of 25-35 square metres. Cost is £60,000-£90,000. Build time 12-16 weeks. The Edwardian semis often have cavity walls (built around 1900-1910), which makes insulation tie-in straightforward — new cavity insulation reaches U-value 0.18-0.21 W/m²K without losing internal floor area.
Anerley structural and Bromley planning detail
Three Anerley-specific factors affect kitchen extensions. Mixed clay and gravel subsoil. SE20 sits on a transition between London Clay (lower ground towards Penge) and the river-terrace gravel that runs up the Crystal Palace ridge. Foundation depths vary across the borough — typically 1.0-1.2 metres on gravel, 1.2-1.5 metres on clay. We dig a trial hole at the survey on any project where the ground conditions aren't already known from a neighbouring job we've completed. The structural engineer specifies the foundation design from the trial hole data, and the cost is firm before the contract is signed. Party wall mechanics on Anerley terraces. The Victorian terraces along Anerley Road and Anerley Park share 9-inch solid brick party walls with neighbouring properties. Single-storey rear extensions trigger Party Wall Act 1996 requirements where the new structure ties into the shared wall, where excavation is within 3 metres of neighbour foundations, or where new openings are cut for steel beams. Notice must be served at least two months before work starts. We typically use an Agreed Surveyor (£900-£1,500 single fee) where neighbours dissent rather than each side appointing separately, which keeps the process faster and cheaper. Bromley Council planning. Anerley falls under Bromley Council, which is one of the more efficient outer London authorities for extension applications. There is no conservation area covering Anerley itself, so permitted development under Class A applies as standard. We submit a Lawful Development Certificate (£103, typically 6-8 weeks at Bromley) on every project, which gives written confirmation of permitted development status and protects the property at sale or remortgage. Larger projects exceeding the 3-metre limit go through the Larger Home Extension prior approval process or full planning at £206.
Project management on an Anerley kitchen extension
An Anerley kitchen extension involves 12-15 trades over 10-16 weeks: demolition, foundations, drainage, structural steel, brick and block, roofing, glazing, plastering, electrics (NICEIC), plumbing, gas (Gas Safe), kitchen fitting, tiling, flooring, painting. We assign one project manager from survey through handover. The project manager runs the weekly programme, schedules the trades, manages materials, and reports progress with photo updates throughout the build. Fixed-price contracts cover labour, materials, structural engineer calculations (typically £600-£1,200 for the steel design and pad-stone detail), Building Control fees (£400-£600 at Bromley), FENSA glazing registration, party wall surveyor coordination, and the Lawful Development Certificate fee where permitted development applies. The price doesn't change unless the specification does. Building Control inspections happen at foundation, DPC, drainage, structural steel, insulation (Part L: U-value 0.18 W/m²K for new walls and roof, 1.4 W/m²K for windows), and completion stages. The completion certificate is delivered at handover. Glazing is FENSA-registered. Bifolds are typically Origin or Schüco aluminium frames; sliders are Sieger or IQ on premium projects. Roof lanterns from Korniche or Glazing Vision are standard. Roof construction is warm-roof with 150mm PIR insulation and a single-ply EPDM or TPO membrane. Where the extension projects over a public sewer (common on the rear of SE20 terraces), Thames Water Build Over Agreement is required (£317 fee plus CCTV survey) and we handle the application. Our office on Limes Avenue is 5 minutes from any Anerley property — same-day surveys, 48-hour quote turnaround, immediate response if anything needs attention during the build.
Kitchen Extensions in Anerley: What's Included
Kitchen Extensions Pricing in Anerley
£45,000 – £90,000
10–14 weeks | Fixed-price contracts | No hidden costs
What 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
Anerley
“Professional team, clear communication throughout. They handled everything including Building Control sign-off.”
Verified Customer
Anerley
Frequently Asked Questions
- How much does an Anerley kitchen extension cost?
- Single-storey rear extensions of 3-4 metres on Victorian terraces (the most common Anerley project) run £45,000-£70,000 including foundations, structural steelwork, glazing, electrics, plumbing, and finishes. Side return infill runs £30,000-£50,000. Wraparound extensions on Edwardian semis with side access run £60,000-£90,000. Build Over Agreement with Thames Water adds £317 plus CCTV survey where the extension passes over a public sewer. Party wall surveyor (Agreed Surveyor route) is £900-£1,500 single fee where neighbours dissent. Fixed-price contract before any work starts. The price doesn't change unless the specification does.
- How deep do foundations need to be on an Anerley kitchen extension?
- Typically 1.0-1.5 metres depending on subsoil. SE20 sits on a transition between London Clay (lower ground towards Penge) and the river-terrace gravel running up the Crystal Palace ridge — gravel sites take 1.0-1.2 metres, clay sites take 1.2-1.5 metres under standard strip foundations. Properties near mature trees may need 1.5-2.0 metres or piled foundations to avoid clay shrinkage from root moisture extraction. We dig a trial hole at the survey on any new street, and the structural engineer specifies the foundation depth from the data. Building Control inspects the foundation trench before concrete is poured. Foundation cost is firm before the contract is signed.
- Do I need planning permission for an Anerley kitchen extension?
- Most don't. Anerley is not in a conservation area and Bromley Council applies the standard Class A permitted development rules: 3-metre rear projection on a terrace, 4 metres on a semi, eaves up to 3 metres, overall height up to 4 metres. We submit a Lawful Development Certificate (£103, 6-8 weeks at Bromley) on every project for written confirmation of permitted development status — this protects the property at sale and avoids retrospective enforcement risk. Larger extensions of 4-6 metres on terraces (or up to 8 metres on semis) go through the Larger Home Extension prior approval process. Full planning at £206 covers anything beyond. We handle the application as part of every project.
- Why hire All Well for an Anerley kitchen extension?
- Three reasons. First, location: our office is on Limes Avenue, SE20, 5 minutes from any Anerley property. Same-day surveys, 48-hour quote turnaround, and immediate response if anything needs attention during or after the build. Second, full accreditation: NICEIC for electrical (BS 7671), FENSA for glazing, Gas Safe registered for boiler relocation, and Building Control sign-off included on every project. Third, fixed-price contracts: the quote doesn't change unless the specification does, including any Build Over Agreement, party wall surveyor fees, or trial-hole foundation reassessment. 57 verified Google reviews averaging 4.5/5. Office on Limes Avenue, SE20.
Kitchen Extensions Near Anerley
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