Expert Builders in Lewisham
Reliable extensions, loft conversions and renovations for Lewisham's Victorian terraces and period properties across SE13 and surrounding postcodes.
Quality Construction Services in Lewisham, SE13
Lewisham is one of South East London's most dynamic boroughs, a neighbourhood undergoing significant regeneration while retaining the character of its Victorian and Edwardian residential streets. Long rows of handsome Victorian terraces, bay-fronted semis and converted period properties line the streets around Lewisham town centre, Ladywell and Brockley, offering homeowners excellent potential to extend, convert and modernise. Alstruct Ltd provides dependable, quality construction services throughout SE13 and the wider Lewisham borough, helping homeowners unlock their property's full potential.
The predominant housing stock across Lewisham consists of two and three-storey Victorian terraces with rear additions, side returns and generous loft spaces ripe for conversion. Properties around Ladywell and Hither Green feature classic London stock brick construction with slate roofs, bay windows and period detailing that reward sensitive renovation. The ongoing Lewisham town centre regeneration — including the Bakerloo line extension plans — is driving strong property value growth, making considered investment in extensions and renovations particularly worthwhile. Alstruct designs every project to maximise both living space and long-term return.
Lewisham Council operates a proactive planning department with several conservation areas, including the Blackheath and Brockley Conservation Areas, where additional design controls apply. Alstruct's team has strong experience navigating Lewisham's planning policies, preparing applications that satisfy conservation requirements and building regulations. Whether you need a permitted development rear extension, a loft conversion or a full planning application for a larger project, we handle every aspect with professionalism and local expertise.
Why Choose Alstruct in Lewisham?
- Deep experience with Victorian terrace extensions and conversions
- Strong knowledge of Lewisham Council planning and conservation policies
- CHAS Elite, Constructionline Gold & FMB accredited
- Free site survey and transparent, detailed quotation
- Dedicated project manager for every build
- In-house design team for drawings and planning applications
- Quality craftsmanship with reliable project timelines
- Proven track record across South East London
Frequently Asked Questions — Lewisham
How much does a rear extension cost on a Victorian terrace in Lewisham?
Rear extensions on Victorian terraces in Lewisham typically cost between £45,000 and £95,000 depending on the size and specification. A single-storey kitchen-diner extension averaging 15-20 sqm usually costs £50,000 to £75,000 with quality finishes. Alstruct provides detailed, fixed-price quotations after a full site survey so you know exactly what to expect.
Can I extend my property in the Brockley Conservation Area?
Yes, but additional planning controls apply within the Brockley Conservation Area. Permitted Development rights may be restricted, and proposals must respect the area's architectural character. Alstruct has experience designing sympathetic extensions within Lewisham's conservation areas and can prepare and submit planning applications that satisfy the council's conservation requirements.
Are loft conversions suitable for Victorian terraces in SE13?
Victorian terraces in Lewisham are excellent candidates for loft conversions, particularly dormer conversions that create a full-height bedroom with en-suite bathroom. Most terraces in SE13 have sufficient head height and structural capacity. Costs typically range from £48,000 to £72,000. Alstruct manages the entire process from structural surveys through to completion.
Will the Lewisham regeneration affect my property value?
Lewisham's ongoing regeneration, including improved transport links and town centre redevelopment, is driving sustained property value growth across the borough. Investing in a well-designed extension or renovation now positions your home to benefit from this upward trend. Alstruct helps clients make smart improvements that maximise both living space and long-term value.
Construction Services in Lewisham
Extensions in Lewisham
Rear, side return and wraparound extensions for Lewisham's Victorian terraces, creating open-plan kitchen-diners and additional family living space.
Learn more →Loft Conversions in Lewisham
Dormer and mansard conversions transforming unused roof space into bedrooms and en-suites across Lewisham's period terraces and semi-detached homes.
Learn more →Renovations in Lewisham
Complete property refurbishments from kitchen and bathroom renovations to full whole-house transformations, breathing new life into Lewisham's period properties.
Learn more →Basement Conversions in Lewisham
Basement excavation and conversion adding valuable living space beneath Lewisham's Victorian terraces, ideal for home offices or entertainment rooms.
Learn more →Groundworks in Lewisham
Expert foundations, underpinning and drainage solutions for extensions and structural work across Lewisham's clay-rich ground conditions.
Learn more →Landscaping in Lewisham
Patios, garden paths, boundary walls and courtyard spaces designed to complement Lewisham's Victorian gardens and urban outdoor areas.
Learn more →House extensions in Lewisham
Lewisham has Victorian terraces in Brockley, Ladywell and around Hither Green, Edwardian houses in Lee and on the Blackheath fringes, and 1930s semis towards Catford. Rear and side-return kitchen extensions are the standard Lewisham projects; the wider Edwardian houses in Lee take a wraparound.
Brockley, Ladywell, Blackheath and Lee Manor are conservation areas; elsewhere Lewisham Council permits most single-storey extensions under permitted development. Most Lewisham 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 Lewisham Council in-house.
Loft conversions in Lewisham
Lewisham's Victorian and Edwardian roofs suit rear dormers and L-shaped dormers; in Brockley's conservation area a rear-only dormer is expected.
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 Lewisham 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 Lewisham
Lewisham renovations are often complete refurbishments of Victorian terraces and flat conversions with new kitchens, bathrooms and services. Typical Lewisham 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. Lewisham projects are run by a single project manager under a JCT contract, with a written specification and a 10-year workmanship warranty.
Alstruct projects near Lewisham
Hawthorn Cottage, Limehouse E14
Underpinning, ground and first-floor extensions and a full renovation with bespoke joinery.
About 4.5 miles from Lewisham · View project →Lyal Road, Bow E3
Victorian terrace: ground-floor lowering, underpinning, flat-roof extension and large roof glazing.
About 6 miles from Lewisham · View project →Keogh Road, Stratford E15
Zinc-clad loft conversions, kitchens, bathrooms and structural works on two Victorian terraces.
About 7 miles from Lewisham · View project →Our nearest recent sites to Lewisham are in E14 and E3 (about 4.5 miles away). We work across every London borough from our office in South Woodford, E18, and regularly take on projects further out. See all completed projects →
We Also Cover Areas Near Lewisham
Common questions about building in Lewisham
Do Alstruct cover Lewisham?
Yes, Alstruct regularly works on extensions, renovations and loft conversions across Lewisham and surrounding London neighbourhoods. We visit, measure and provide a written quote.
How much does a house extension cost in Lewisham?
House extensions in Lewisham typically cost £50,000–£200,000+ depending on size, specification and the property's existing structure. Victorian and edwardian terraces are the most common build type in the area, and our quote will reflect the specific condition and layout of the property.
Do I need planning permission for an extension in Lewisham?
Many single-storey rear extensions in Lewisham fall under Permitted Development rights and don't require planning permission, but larger or two-storey extensions usually need approval from Lewisham Council. We assess this during the free consultation and prepare any application required.
What types of property do you work on in Lewisham?
Most Lewisham projects we deliver are on Victorian and Edwardian terraces. We have direct experience with the structural, compliance and aesthetic considerations specific to these property types, including listed building consent work where applicable.
How quickly can Alstruct start a project in Lewisham?
Once design and approvals are signed off, we typically start on site in Lewisham within 6–12 weeks depending on programme availability. Planning + design adds 8–16 weeks before site start. For urgent projects, get in touch on 020 8080 8240 to discuss timing.
Are you accredited to work in Lewisham?
Yes. Alstruct holds CHAS Elite, Constructionline Gold and Federation of Master Builders (FMB) accreditation, with £10M public liability insurance, JCT contracts as standard, and a 10-year workmanship warranty on every project — including all work in Lewisham.
Nearby areas we cover
Alstruct works across every London borough. Here are areas close to Lewisham with dedicated local pages: