Extension Builder in Streatham
445 vetted extension builders covering Streatham. Post your job free and compare responses directly - no obligation.
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Building and renovation work in Streatham
Streatham, part of the London Borough of Lambeth, is known for a bustling town-centre stretch of late-Victorian retail buildings and residential mansion blocks, with Queen Anne-style suburban streets around Streatham Park. Its proximity to Streatham Common and St Leonard's Church and good transport links via Streatham station and Streatham Hill station, served by National Rail continue to make it a popular place for homeowners to invest in renovation and extension projects rather than move - keeping steady demand for reliable, quality extension building work in the area.
With the Streatham High Road & Streatham Hill, Streatham Common and Streatham Park conservation areas covering parts of Streatham, planning and conservation requirements are a real factor in extension building work here - work that would be straightforward elsewhere can need extra care, matching materials, or formal planning consent locally. Homeowners in Streatham increasingly look for tradespeople who understand that local context, rather than a generic, one-size-fits-all quote.
Perez Buildings & Renovations
Builder, Plumber, Extension Builder, Gas Engineer
SW8 1JX
Get in touchS&D Plumbing And Maintenance
Builder, Plumber, Extension Builder, Gas Engineer
SW16 5JU
Get in touchTricks Of The Trade Property Solutions
Builder, Plumber, Extension Builder, Gas Engineer
SW4 6AH
Get in touchBricknell Building & Decorating
Builder, Painter & Decorator, Extension Builder
SW9 7AP
Get in touchPrestige Refurbishment Projects
Builder, Plumber, Carpenter, Extension Builder, Gas Engineer
SW9 0BN
Get in touchWhat to expect from a extension builder in Streatham
Extensions typically need either planning permission or a Lawful Development Certificate confirming permitted development rights, plus building control approval throughout.
As with any trade, it's worth asking to see proof of insurance and relevant qualifications before work starts, checking recent examples of similar jobs, and getting the scope of work agreed in writing - see our guide on questions to ask before hiring below.
Typical project costs in Streatham
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Hiring safely in Streatham
A few things worth checking before you agree to any quote:
Frequently asked questions
How much does a extension builder cost in Streatham?
A single-storey extension typically costs from around £1,800 per m² for a standard finish, before architect fees, planning application fees, and building control sign-off - which usually add another £3,000-£8,000. Get a ballpark for your own project with our free extension cost calculator.
How do I know a extension builder in Streatham is trustworthy?
Every builder on builderfinder.uk is manually checked before their profile goes live - we match their photo ID to their face, verify their UK proof of address, and check their trades and insurance. You can also see their reviews and completed jobs on their profile, and look for the Verified badge, or a Companies House Verified badge if they're a limited company.
Do I need planning permission for extension building work in Streatham?
It depends on the specific job, but it's a real question to ask locally: the Streatham High Road & Streatham Hill, Streatham Common and Streatham Park conservation areas cover parts of Streatham, and work that would be permitted development elsewhere can need formal planning consent here, or need to match existing materials and style. Always check with the London Borough of Lambeth's planning department, or ask your builder to confirm before work starts.
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