Find trusted local builders in Putney (SW15) for high-value extensions, loft conversions, basement conversions and full refurbishments. Post a job free — builders contact you within hours.
High-specification rear and side extensions on Putney's large Victorian semis and detached properties. River-side premium builds covered.
Find a builder →Dormer and mansard loft conversions in SW15. Structural engineer coordination and party wall agreements fully managed.
Find a builder →Full house refurbishments and period property restorations in Putney. High-specification finishes and project management included.
Find a builder →Commercial fit-outs for riverside offices, retail and hospitality venues in and around Putney Bridge and the High Street.
Find a builder →RSJ beam installation, basement underpinning, and party wall works across Putney's premium residential streets.
Find a builder →Garden studios, annexes and high-spec outbuildings. New single-dwelling builds in SW15 also considered.
Find a builder →| Job | Low estimate | High estimate |
|---|---|---|
| Single-storey rear 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 house refurbishment (3-bed) | £40,000 | £100,000 |
| Kitchen extension (open plan) | £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 |
| Load-bearing wall removal (RSJ) | £1,500 | £4,000 |
| New build (per m²) | £2,000 | £4,000 |
Prices are estimates for Putney 2026. High-spec finishes and riverside locations typically sit at the top of these ranges. Always get multiple quotes.
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Putney is one of South West London's most affluent riverside suburbs, and its building market reflects that. Large Victorian semis and detached properties in the streets around Putney Heath, the Upper Richmond Road and the riverfront are well-suited to high-value extensions, basement conversions, and full-house refurbishments. Garden room annexes and home office studios are also extremely popular — particularly among Putney's professional households who prioritise premium workspace quality. Expect higher specification expectations here than in most other South London areas, with natural stone, bespoke joinery and underfloor heating standard rather than exceptional.
Basement conversions are a notable feature of the Putney market, with dig-out basements adding a leisure room, cinema room or guest suite under properties that have the right structural conditions. These projects are complex — requiring specialist structural engineers, waterproofing contractors, and party wall agreements — but the value uplift in SW15 can be substantial. Some streets near the river and around Putney Heath have additional conservation area or tree preservation constraints. Always check with the London Borough of Wandsworth's planning team before commissioning drawings.
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