Extension Builder in Bromley
84 vetted extension builders covering Bromley. Post your job free and compare responses directly - no obligation.
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Building and renovation work in Bromley
Bromley, part of the London Borough of Bromley, is known for a mix of grand Victorian and gothic revival villas around Chislehurst, cohesive inter-war estates like Warren Wood, and post-war Canadian-cedar houses. Its proximity to Beckenham Place Park and good transport links via Bromley South and Bromley North stations, 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 Chislehurst and Warren Wood Estate conservation areas - 47 in total across the borough, among the most of any London borough covering parts of Bromley, 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 Bromley increasingly look for tradespeople who understand that local context, rather than a generic, one-size-fits-all quote.
Delux Construction
Builder, Electrician, Plumber, Extension Builder, Gas Engineer
SE20 7DS
Get in touchRaz Builders
Builder, Plasterer, Painter & Decorator, Tiler, Extension Builder
SE26 6EA
Get in touchWhat to expect from a extension builder in Bromley
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 Bromley
How to Choose a Builder in Bromley
A practical checklist for picking a trustworthy builder if you live in Bromley.
House Extension Cost in Bromley: 2026 Price Guide
Single and double-storey extension costs in Bromley, and the local factors that move the price.
Renovating a Period Property in Bromley: What to Know
What makes renovating an older Bromley property different, from foundations to conservation area rules.
Kitchen Extension Planning Permission in Bromley
Do you need planning permission for a kitchen extension in Bromley? Permitted development limits and local conservation area rules explained.
Loft Conversion & Dormer Planning Permission in Bromley
Do you need planning permission for a loft conversion or dormer in Bromley? Roof volume limits, party walls and conservation area rules explained.
Hiring safely in Bromley
A few things worth checking before you agree to any quote:
Frequently asked questions
How much does a extension builder cost in Bromley?
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 Bromley 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 Bromley?
It depends on the specific job, but it's a real question to ask locally: the Chislehurst and Warren Wood Estate conservation areas - 47 in total across the borough, among the most of any London borough cover parts of Bromley, 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 Bromley's planning department, or ask your builder to confirm before work starts.
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