Builders & Renovation Specialists in Beckenham
Kitchen extensions, loft conversions, bathrooms and full renovations in Beckenham, South East London (BR3)
NICEIC, FENSA and CHAS accredited. 57+ Google reviews averaging 4.5 stars. Free site visit, fixed-price quote.
About Beckenham
Beckenham is a leafy, affluent area with a mix of large Edwardian detached houses, Victorian semis, and well-built inter-war properties. Homeowners here tend to invest in high-specification renovations that match the quality of the existing housing stock. The generous plot sizes in BR3 provide excellent scope for substantial extensions and conversions.
Postcodes we cover: BR3
Popular Services in Beckenham
Loft conversions are the most popular project in Beckenham, particularly hip-to-gable conversions on the Edwardian and 1930s semis that create full-size bedrooms with en-suite bathrooms. Kitchen extensions are close behind, with many clients opting for rear extensions of 4-6 metres with high-specification glazing and finishes. Garage conversions are also common on the detached properties, converting underused garages into home offices or playrooms.
Planning & Building Control in Beckenham
Beckenham falls under Bromley Council. The Beckenham Place Park and Copers Cope conservation areas have additional design requirements, but most residential streets in Beckenham are outside conservation zones. Bromley Council is efficient with permitted development applications and Lawful Development Certificates. For larger properties near Kelsey Park, tree preservation orders are common and need to be factored into extension designs.
Beckenham Property Insights
The Edwardian detached houses in Beckenham are among the largest residential properties in the BR3 postcode, often with four or five bedrooms and deep rear gardens. These properties have excellent potential for substantial rear extensions and loft conversions. The inter-war properties typically have cavity walls and concrete tile roofs, making them structurally well-suited for conversion work. Ground conditions in Beckenham are generally clay-based, requiring standard foundation depths of 1.0-1.2 metres.
Common Projects in Beckenham
Hip-to-gable loft conversion on an Edwardian semi
The most common big project in Beckenham. The Edwardian and 1930s semis have hipped roof structures that suit a hip-to-gable conversion: the sloping side roof is replaced with a vertical gable wall, and a rear dormer creates a full-size bedroom with en-suite. Cost is from £55,000 including structure, staircase, en-suite plumbing, electrics, plastering, and decoration. Build time 10-14 weeks. A well-finished conversion typically adds £100,000-£150,000 to a Beckenham property's value, making it the highest-ROI project on the Edwardian and inter-war housing stock.
High-specification rear kitchen extension
Beckenham clients typically specify premium finishes — Crittall-style glazing, roof lanterns, underfloor heating, premium kitchen units (Howdens to bespoke joinery), and natural stone or porcelain flooring. Rear extensions of 4-6 metres on the larger detached and semi-detached properties create open-plan kitchen-diners with garden access. Cost is from £70,000 including structural steelwork, foundations on Beckenham clay (typically 1.0-1.2 metres), glazing, electrics, plumbing, and finishes. Build time 12-16 weeks. Building Control sign-off, FENSA glazing registration, and structural engineer calculations are included.
Garage conversion to home office or annexe
Many Beckenham detached properties have double garages that are massively underused — typically used for storage rather than parking. A double garage conversion gives 25-30 square metres of new living space, suitable for a high-end home office, guest annexe, or self-contained studio. Single garage cost from £18,000; double garage £30,000-£45,000 depending on whether plumbing and a kitchenette are included. Build time 6-10 weeks. We level the garage floor up with insulated screed (typically 200mm below house floor), add wall and roof insulation to U-value 0.18 W/m²K, and finish to habitable standard.
Full property repaint on a period property
Pre-1960 Beckenham properties typically have lead paint under visible top coats and original lime plaster behind decades of later wallpaper. Decoration needs to use breathable mineral paints (Keim Optil) on lime plaster and HSE-compliant containment when sanding lead-paint layers on woodwork. Full interior repaint of a four-bedroom Beckenham property is £8,000-£12,000 with two coats of mid-range trade paint, full woodwork system, and proper preparation. Exterior repaints add £4,500-£9,500 on an 8-12 year cycle. We test with 3M LeadCheck swabs at the survey before quoting strip-and-repaint work.
Our Services in Beckenham
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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Frequently Asked Questions
- Are there conservation areas in Beckenham?
- Yes, two main ones. The Beckenham Place Park conservation area covers properties around the park; the Copers Cope conservation area sits north of Beckenham Junction. In both, exterior changes (window replacement, render colour, front door style, paint colour on render) need sympathetic design and Bromley Council can refuse retrospective consent for inappropriate alterations. Most residential streets in Beckenham are outside the conservation areas and have full permitted development rights. We check the conservation area boundary on the Bromley planning portal at the survey before any quote.
- Why are foundations more expensive on some Beckenham properties?
- Two factors. First, the clay subsoil under most of BR3 requires foundations of at least 1.0-1.2 metres, slightly deeper than sandy subsoil areas. Second, properties near mature trees (particularly oaks around Kelsey Park and large suburban gardens) need deeper foundations of 1.5-2.0 metres or piled foundations to avoid movement from tree-root moisture extraction. Tree Preservation Orders are common on the larger properties, and removing trees for an extension is rarely permitted. The structural engineer's foundation recommendation is firm before we issue the contract.
- How long does a typical Beckenham loft conversion take?
- Ten to fourteen weeks for a hip-to-gable loft conversion on an Edwardian or 1930s semi. The schedule is roughly: weeks 1-2 structural work and dormer construction, weeks 3-4 first-fix electrics, plumbing, and insulation, weeks 5-7 plasterboard and second fix, weeks 8-10 staircase, en-suite, and finishes, weeks 11-14 painting, decorating, and snagging. Party wall agreements with both neighbours need 4-8 weeks and must be served before work starts. Bromley Building Control sign-off includes inspections at structure, insulation, and completion stages.
- Do you handle the Building Control process for Beckenham projects?
- Yes, on every project. We submit Building Control applications to Bromley Council Building Control on your behalf, schedule the inspections at structure, insulation, and completion stages, and obtain the final completion certificate. Fees are included in the project cost (typically from £350 for an extension or loft conversion). For projects with a structural element, we also include structural engineer calculations and FENSA glazing registration. The completion certificate is what proves the work is compliant when you sell or remortgage the property — it's worth getting right first time.
Get a Free Quote in Beckenham
Tell us your project and we will book a free site visit, then send a fixed-price quote in writing. No obligation.