Find trusted local builders in Streatham (SW16, SW2) for extensions, loft conversions, refurbishments and garden rooms. Post a job free — builders contact you within hours.
Rear kitchen extensions and open-plan remodelling on Streatham's Victorian and Edwardian terraces. SW16 and SW2 covered.
Find a builder →Dormer and Velux loft conversions across Streatham, adding bedrooms and bathrooms to period terrace houses.
Find a builder →Full house refurbishments for first-time buyers and landlords across SW16 and SW2. All budgets welcomed.
Find a builder →Commercial and retail fit-outs along Streatham High Road and the surrounding commercial areas.
Find a builder →RSJ beam installation, load-bearing wall removal, and party wall works across Streatham's terrace streets.
Find a builder →Garden rooms, studios and outbuildings popular with Streatham homeowners looking to add usable space.
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 Streatham 2026. Actual costs vary by specification and complexity. Always get multiple quotes.
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Streatham has become one of South West London's most active areas for first-time buyer building projects. The area's relative affordability means many buyers can purchase a Victorian or Edwardian terrace in SW16 or SW2 and still have budget left to extend or refurbish. Rear kitchen extensions are particularly popular — adding 15–25 square metres to a period terrace can transform the feel of the entire ground floor while adding significant value. Loft conversions are also common, particularly in the larger Edwardian semis, where the roof space is often substantial enough for a bedroom and en-suite.
Streatham Hill has a designated conservation area, which means some external works require a full planning application rather than relying on Permitted Development rights — particularly roof alterations and front elevation changes. The wider SW16 area is more straightforward for most extension and loft work. Garden rooms have also grown in popularity in Streatham, as homeowners with larger rear gardens look to create home offices or additional entertaining space without the planning complexity of a full extension.
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