From £22,280
Member since August 2026
Relax... you have found a reliable extension builder in Wycombe. ABC Associates STRUCTURES 4 U is a friendly and reliable company based in Wycombe ...
From £21,944
Need an Extension Builder in Wycombe? Ava Constructions & Decors Ltd has been helping local clients (10 mile radius) with their extension builderin...
From £22,096
Matharu Buildings is an established extension buildering business in Wycombe. We come highly recommended and provide competitive quotes for your wo...
From £22,424
Sharp Building Ltd is an established and experienced local extension builder in Wycombe. Please contact us for a free, no obligation quote and comp...
From £22,312
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £22,280
Trusted and professional extension builder in Wycombe. Experienced in all extension buildering work and keeping within budget and on quote. DC Buil...
From £22,304
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £22,336
Trusted and professional extension builder in Wycombe. Experienced in all extension buildering work and keeping within budget and on quote. SME Bui...
From £22,000
Member since July 2020
EB Construction & Building Ltd are here to help customers who need an Extension Builder in Wycombe. We offer a competitive rate to complete all you...

A flat roof extension ranges from the cheapest of £21,944 (Ava Constructions & Decors Ltd based in UB3) to the dearest of £22,424 (Sharp Building Ltd based in WD19), but these are just estimates. While they give you an idea of who will be better value, the best way to compare costs is to get real quotes.
Find out how much your flat roof extension will cost in Wycombe by posting a job with HaMuch. We'll send it to extension builders in Wycombe.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Wycombe | £39 | £271 |
| Build A Flat Roof Extension near High Wycombe | £39 | £272 |
| Build A Flat Roof Extension near Hazlemere | £40 | £272 |
| Build A Flat Roof Extension near Maidenhead | £41 | £273 |
| Build A Flat Roof Extension near Chesham | £42 | £277 |
| Build A Flat Roof Extension near Gerrards Cross | £43 | £282 |
| Build A Flat Roof Extension near South Oxfordshire | £36 | £253 |
| Build A Flat Roof Extension near Aylesbury | £42 | £270 |
| Build A Flat Roof Extension near Slough | £42 | £272 |
| Build A Flat Roof Extension near Caversham | £38 | £265 |
Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.

Underpin a building - £17,738

Two storey extension - £88,356

Build a timber frame extension - £26,238

Build a swimming pool - £81,238

Single storey extension - £59,752

Side return extension - £44,173

Install an RSJ - £2,438

Outbuilding - £10,238

Build a Mansard loft conversion - £52,238

Loft conversion - £35,978

Build a kitchen extension - £42,238

Hip to gable loft conversion - £42,238

Granny annexe - £87,238

Garden office - £10,238

Convert a Garage - £16,238

Garage - £18,738

Build a flat roof extension - £22,238

Build a dormer loft conversion - £42,238

Concrete foundations - £6,488

Convert a bungalow loft - £29,238

Convert a basement - £40,173