The 10 builders from Google's results for South London, ranked on Google rating, online presence and other factors. Updated 10 September 2026.
on GoogleDartmouth Rd, London
Home Builder London provides general building and renovation services across London from its Lewisham base. Projects include kitchen installations, bathroom refurbishments, and loft conversions.
07473 463936 73a-73b, Dartmouth Rd, London SE23 3HT
on GoogleLondon
Kelmend Construction supplies building services to homeowners throughout South London. Capabilities include house extensions, loft conversions, new property builds, full refurbishments, and roofing repairs. One team handles projects from the initial site visit through to final sign-off.
020 8226 0221 4 Pound Park Rd, London SE7 8AF
on GoogleLondon
J&B Builders, a South London firm, carries out general building work and interior refurbishments across London. The firm also takes on interior design and build projects, handling both the design of a space and the building work that follows.
020 8764 1540 216 Deptford High St, London SE8 3PR
on GoogleSouth London
Simply Extend builds house and kitchen extensions across East and South London, covering areas such as Croydon, Lambeth and Wandsworth. The business manages residential builds through assigned project managers, handling groundworks, brickwork construction, plastering and internal fittings.
South London
South London Builder offers building and property maintenance across Richmond, Wimbledon, and nearby areas. Services range from house extensions and loft conversions to complete new builds. The company also employs in-house plumbers to undertake bathroom design and fitting.
South London
Plus Rooms provides house and kitchen extension services to homeowners in Richmond-upon-Thames and across South West London. The company manages projects from design through to construction, handling planning regulatory requirements along the way. Its team also builds loft conversions.
South London
LMDEC handles full property restorations, kitchen renovations, bathroom refits, extensions, and loft conversions. Based in Richmond, the building firm serves clients across Wandsworth, Chelsea, and Croydon, carrying out demolition, structural steelwork, carpentry, plastering, tiling, and decorating.
South London
Construction and hard landscaping services are provided by Davidrutland across South London, Bromley, and Croydon. The company handles house extensions as well as outdoor spatial improvements and garden layout changes.
South London
Simply Construction Group carries out residential building projects across Richmond and Bromley. The firm handles architectural design through to construction delivery, specialising in home extensions, loft conversions and basement conversions for local property owners.
South London
Southwest Builders undertakes building construction projects throughout South London. Key specialisms include loft conversions, house extensions, basement excavations, roofing, and full home refurbishments. Additional services cover bathroom installations, kitchen fitting, and garden land improvement work.
In South London, small structural job typically costs £1,700 – £6,000. Labour in Greater London runs 16% above the UK median, which accounts for most of the difference from the same job elsewhere.
These are the firms from Google's results for "builders south london". They are ranked on Google rating, online presence and other factors.
The figures above are South London ranges. These explain what drives them, so you can read a quote properly.
Per-square-metre rates for light, standard and full renovations, prices job by job, rates by region, and the VAT, fees and contingency that sit on top of the build.
2026 prices for single and double garage conversions by garage type and room, what a quote should include, the fees and VAT around the build, and the rules in each UK nation.
Which jobs are notifiable, how the application routes work, what building control inspects, and what a completion certificate is worth when you come to sell.
For anything over about £10,000, yes. The JCT Home Owner contract is short, plain English and free to buy. It fixes the payment schedule and the process if things go wrong, which is exactly what an informal arrangement does not.
Materials up front is reasonable. A large percentage of the total is not. Stage payments against completed work are the norm, and a firm insisting on 50% before starting is a warning sign.