Premium Builders in Brixton
Premium house extensions, renovations and loft conversions in Brixton, London.
Builders in Brixton, SW2/SW9
Brixton is one of South London's most vibrant and rapidly evolving neighbourhoods, where a rich cultural heritage meets dynamic urban regeneration. The area's handsome Victorian terraces, many featuring original period detailing and generous proportions, line streets that pulse with creative energy and community spirit. Alstruct Ltd delivers premium construction services tailored to Brixton's distinctive housing stock, helping homeowners transform their properties to match the area's exciting contemporary character while respecting its architectural heritage.
Brixton's residential streets are dominated by Victorian terraced housing, offering the classic London layout of bay-fronted reception rooms, rear returns and long gardens. These properties are ideal candidates for the extensions and conversions that Alstruct specialises in. Side return extensions can open up narrow ground floors into expansive kitchen-living spaces, while rear extensions with bi-fold doors create a seamless connection to the garden. Loft conversions are equally popular, adding valuable master suites or home offices to properties where footprint expansion is limited. As property values in Brixton continue to rise, well-executed construction work delivers exceptional returns on investment.
Brixton falls within the London Borough of Lambeth, which has its own specific planning policies and several conservation areas including Brixton, Brixton Road and Rush Common and Brixton Hill. Lambeth Council's planning framework requires careful navigation, particularly where proposals affect the streetscape or sit within conservation zones. Alstruct's design team designs proposals that balance contemporary ambition with Lambeth's planning policies, and manages applications from submission through to approval.
Why Choose Alstruct in Brixton?
- Extensive experience with Victorian terraced properties
- Thorough knowledge of Lambeth Council planning policies
- CHAS Elite, Constructionline Gold & FMB accredited
- Complimentary site survey and design consultation
- Dedicated project manager for every project
- Creative, design-led approach suited to Brixton's character
- Transparent, fully itemised quotations with no hidden costs
- Published case studies with scope, programme and budget
Construction Services in Brixton
Extensions in Brixton
Rear, side return and wraparound extensions transforming Brixton's Victorian terraces into spacious, light-filled contemporary homes.
Learn more →Loft Conversions in Brixton
Dormer and mansard loft conversions adding valuable bedrooms and en-suites to Brixton's period properties, maximising space and value.
Learn more →Renovations in Brixton
Design-led whole-house refurbishments blending Victorian character with bold contemporary style, reflecting Brixton's creative identity.
Learn more →Basement Conversions in Brixton
Expert basement excavation and conversion creating additional living space beneath Brixton's Victorian terraces.
Learn more →Groundworks in Brixton
Professional foundations, underpinning and drainage solutions for Brixton's period properties and new-build projects.
Learn more →Landscaping in Brixton
Premium garden design, patios, fencing and outdoor spaces designed to make the most of Brixton's rear gardens.
Learn more →House and kitchen extensions in Brixton
Brixton's streets are mainly Victorian terraces around Brixton Hill, Tulse Hill and the Loughborough Road area, with Edwardian houses on the Streatham side and many houses divided into flats. Side-return kitchen extensions and rear extensions to garden flats are the typical Brixton commissions; wraparounds work on the wider terraces off Brixton Hill.
Rush Common and Brixton Hill, Loughborough Park and Brixton are conservation areas, where roof extensions need permission; elsewhere a single-storey rear extension to a house is often permitted development, though flats need permission. Most Brixton extensions we price fall between £2,500 and £4,000 per m², so a 25–30 m² kitchen extension is roughly £75,000–£120,000 fitted out; our house extension cost guide breaks the numbers down. We check permitted development rights at the first visit and deal with Lambeth Council in-house.
Planning a kitchen extension? See our kitchen extensions page for layouts, glazing and costs.
Loft conversions in Brixton
Most Brixton lofts are rear-dormer conversions on Victorian terraces, often L-shaped; converted houses need a freeholder agreement before roof work starts.
Expect £45,000–£75,000 for a dormer loft with a bedroom and en-suite, £60,000–£100,000+ for a mansard and from £25,000 for a Velux conversion; the loft conversion cost guide has the breakdown. For a Brixton loft we measure head height, roof structure and the stair landing first, and the quote includes structural calculations and Building Regulations approval.
Renovations and refurbishment in Brixton
Brixton renovations are frequently whole-flat refurbishments and reconfigurations of period houses, including rewiring, heating and new bathrooms. Typical Brixton refurbishments include structural openings with steel beams, new kitchens and bathrooms, rewiring, heating and period repairs such as sash windows, cornices and floors. See our renovation cost guide for realistic budgets. Brixton projects are run by a single project manager under a JCT contract, with a written specification and a 10-year workmanship warranty.
Guides for homes in Brixton
For the Victorian and Edwardian terraces that make up much of Brixton, our most useful guides are side return extension costs, dormer loft conversion costs, party wall costs, building over a sewer and heat pumps in Victorian terraces.
Planning approvals in Brixton
Lambeth Council approved 83.4% of householder planning applications decided between September 2025 and August 2026, against a London average of 85.8%; a typical decision took about 8.0 weeks from validation. Loft conversions that needed planning permission were approved 78.5% of the time and extensions 88.7%.
See how every London borough compares, including loft and extension approval rates, in our 2026 London planning approvals study.
Alstruct projects near Brixton
Limehouse Cottage, E14
Underpinning, ground and first-floor extensions and a full renovation with bespoke joinery.
View project →Wimbledon Victorian Terrace, SW19
A Victorian terrace extended and reconfigured, with a dormer loft bedroom, three bathrooms and a low-carbon refit.
View project →Notting Hill Villa, W11
Every lead valley renewed on a period villa roof, and the basement store waterproofed and reinstated.
View project →Beyond the projects above, we have recent and current sites in W14 and SW6 within about five miles of Brixton, and we work across every London borough from our office in South Woodford, E18. See all completed projects →
Common questions about building in Brixton
Do I need planning permission for an extension in Brixton?
Houses keep national permitted development rights for a single-storey rear extension (3m attached, 4m detached, or 6m and 8m with prior approval) and most rear dormers (40 cubic metres on a terrace, 50 otherwise). Flats and maisonettes, which are common in Brixton, have no such rights. Lambeth Council decides applications. Parts of Brixton are in the Brixton, Rush Common and Brixton Hill, Loughborough Park, Brixton Water Lane and Brixton Road conservation areas, where side extensions, two-storey rear extensions, cladding and roof additions need permission. None of these has a householder Article 4 direction. See our permitted development guide.
What does Lambeth Council expect for loft conversions in Brixton?
Lambeth's Building Alterations and Extensions SPD (2015) asks for dormers that are subordinate to the roof, set in from the sides, with the sill about 1m above the attic floor. Dormers are resisted on front roof slopes where they are not typical of the group. In conservation areas, dormers are the preferred way to add roof space, and rear mansards are not considered appropriate on houses there. Raising the ridge on a pair or group of houses is not acceptable. In a converted house, the freeholder also needs to agree before roof work starts.
What does a dormer loft conversion cost in Brixton?
Most Brixton lofts are rear dormers on Victorian terraces. A rear dormer loft typically costs £45,000–£75,000 and an L-shaped dormer £55,000–£85,000, both including VAT. Head height, the roof structure and where the new stair lands decide where a project falls, so we measure those first. For the ground floor, a Victorian side return extension is £65,000–£130,000 at mid to high specification, including VAT. Our dormer loft conversion cost guide sets out what is included.
Which Alstruct projects are nearest to Brixton?
The nearest published project is Limehouse Cottage, E14, about 4.8 miles away, which involved underpinning, ground and first-floor extensions and a full renovation with bespoke joinery. Wimbledon Victorian Terrace, SW19, about 4.9 miles away, was extended and reconfigured with a dormer loft bedroom, three bathrooms and a low-carbon refit. Notting Hill Villa, W11, about 5.2 miles away, had every lead valley on its roof renewed and its basement store waterproofed and reinstated.
Which parts of Brixton do you cover?
Nearby areas we cover
Alstruct works across every London borough. Here are areas close to Brixton with dedicated local pages: