Brick house extension under construction
MyBromley Services

House Extensions in Bromley

Up to three vetted, local house extensions. Compare them, then contact them directly: free for residents, no lead fees.

MyBromley Vetted
Only 3 Per Trade
Free for Residents
Your shortlist

Vetted house extensions in Bromley

Every business below has been checked by MyBromley before being listed.

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Hiring an extension builder

Finding a trusted extension builder in Bromley

With moving costs as high as they are, many Bromley families choose to extend rather than move. A rear kitchen extension in Beckenham or a side return in Penge can transform how a home works.

MyBromley lists up to three vetted extension builders local to Bromley. We check identity and insurance before listing, and we'd recommend getting at least three detailed quotes for a project of this size.

Browsing is free, and MyBromley takes no commission from the work you book. You deal with each business directly.

Common jobs

  • Single storey rear extensions
  • Side return and wraparound extensions
  • Double storey extensions
  • Kitchen-diner and open-plan conversions
  • Garage conversions
  • Project management from plans to sign-off
See the house extensions
Before you hire

What to check before hiring an extension builder

Whoever you choose, these are the questions worth asking first.

Planning or permitted development

Many single storey rear extensions fall under permitted development, but limits apply. Check with Bromley Council or apply for a Lawful Development Certificate.

Building Regulations

Extensions always need Building Regulations approval. Your builder should arrange inspections and a completion certificate.

Party Wall Act

If you are building on or near a shared boundary, you may need to serve party wall notices on your neighbours.

Stage payments

Agree a payment schedule linked to completed stages of work, never a large sum up front.

General guidance only. Rules can change, so check with Bromley Council or the relevant trade body if you’re unsure.

How it works

Three steps. No middlemen.

01

See your 3 options

Up to three vetted house extensions, all local to Bromley, shown side by side.

02

Contact them directly

Call, email or visit their website. No forms passed around, no call centres.

03

Compare and book

Get quotes, ask questions and choose who suits you. It’s free for residents.

FAQ

House Extensions in Bromley: common questions

Not always. Single storey rear extensions can often be built under permitted development, within size limits. Houses in conservation areas, flats and maisonettes have fewer rights.

A single storey rear extension typically takes around 10 to 16 weeks on site, once plans and approvals are in place.

For most extensions you will need drawings for planning and Building Regulations. These can come from an architect or architectural designer.

Usually, yes, although there will be a period without a kitchen if you are extending it.

Areas covered

House Extensions across the London Borough of Bromley

Our listed businesses are local to the borough and cover Bromley’s towns and villages, including BR1 to BR7, SE20 and TN16 postcodes. Check coverage for your street when you get in touch.

  • Bromley town centre
  • Beckenham
  • Orpington
  • Chislehurst
  • West Wickham
  • Hayes
  • Petts Wood
  • Biggin Hill
  • Penge
  • Anerley
  • Shortlands
  • Bickley
  • Keston
  • Farnborough
  • Locksbottom
  • Chelsfield
  • Green Street Green
  • St Mary Cray
  • St Paul's Cray
  • Mottingham
  • Elmers End
  • Eden Park
  • Bromley Common
  • Downe
For Bromley businesses

Are you an extension builder in Bromley?

We only list three house extensions in the borough. If you’re local, insured and proud of your work, apply for one of the spots.