Post a job free and get contacted by local builders across South East London — SE1 to SE28, Lewisham, Greenwich, Peckham, Bermondsey. No subscription. No fees to post.
Single and double storey rear and side extensions across South East London. Victorian terraces in Lewisham, Greenwich, and Peckham are ideal candidates for rear extensions.
Find a builder →Velux, dormer, hip-to-gable, and mansard loft conversions. SE London's Victorian terraces frequently have roof space suitable for habitable loft rooms.
Find a builder →Full house refurbishments and internal remodelling. Strong demand from buyers upgrading newly purchased SE London homes drives a busy refurbishment market.
Find a builder →Office refurbishments and shopfits across South East London including Bermondsey, Greenwich Peninsula, and the growing Peckham commercial district.
Find a builder →RSJ steel beam installations, load-bearing wall removals, and underpinning. Open-plan ground-floor remodelling extremely popular across SE terraces.
Find a builder →Garden studios, garage conversions, and new build projects. Garden rooms popular as working-from-home space across larger SE London properties.
Find a builder →| Job | Low estimate | High estimate |
|---|---|---|
| Single-storey extension | £25,000 | £50,000 |
| Double-storey extension | £45,000 | £90,000 |
| Loft conversion (Velux) | £20,000 | £35,000 |
| Loft conversion (dormer) | £35,000 | £65,000 |
| Full refurbishment (3-bed) | £40,000 | £100,000 |
| Kitchen extension | £30,000 | £60,000 |
| Garage conversion | £12,000 | £25,000 |
| Garden room / studio | £15,000 | £40,000 |
| Basement conversion | £40,000 | £80,000 |
| Party wall agreement | £700 | £2,000 |
| RSJ beam installation | £1,500 | £4,000 |
| New build (per m²) | £2,000 | £4,000 |
Prices are estimates for South East London 2026. Actual costs vary by job complexity, specification, and location. Always get multiple quotes.
Describe the building work needed and your SE London postcode. Takes under 2 minutes — no registration required to post.
Fully insured builders covering South East London see your job and message you directly. No middlemen, no commission.
Review each builder's message, experience, and price. Hire the one that suits you — you stay in control throughout the project.
South East London — spanning SE1 through SE28 — is one of London's most dynamic property markets. Victorian and Edwardian terraces are the dominant property type across Lewisham, Greenwich, Peckham, and Camberwell. These homes typically have long rear gardens and standard terrace footprints, making them ideal candidates for single-storey rear kitchen extensions, ground-floor open-plan remodelling, and loft conversions to create a third bedroom with en suite.
Gentrification across the SE postcodes has made extending an attractive alternative to upsizing. Buyers are paying premium prices for extended, refurbished homes in SE15 (Peckham), SE8 (Deptford), and SE4 (Brockley) — areas that have seen significant value growth over the past decade. Party wall agreements are standard practice in these closely spaced terraces; expect to instruct a party wall surveyor if your extension runs along a shared boundary.
When hiring a builder in South East London, check that they have experience with the specific type of Victorian property you own — particularly if you have a solid brick rear wall, a back-addition return, or an original clay drainage system. Always confirm they hold public liability insurance, and use a payment schedule tied to project milestones rather than paying large sums upfront.
Free to post. No subscription. No hidden fees. Fully insured builders across all SE postcodes — responding within hours.