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Buildmac Ltd
Chris Czerwinski
About us: Buildmac Ltd is a well-established, trustworthy, reliable and professional business based in High Wycombe, covering all surrounding areas...
"Single storey extension" - SL9, job posted 27/09/26
HAMPTON CONSTRUCTION LTD
HAMPTON CONSTRUCTION LTD are here to help customers who need an Extension Builder in Winchmore Hill. We offer a competitive rate to complete all yo...
"Loft conversion" - BEACONSFIELD, job posted 15/10/25
6:59 Ltd
Need to find an Extension Builder near you for all your extension buildering work?
6:59 Ltd provides a local, trusted extension buildering ...
"Single storey extension" - CHESHAM, job posted 06/03/24
Building High Wycombe
Relax... you have found a reliable extension builder in Winchmore Hill. Building High Wycombe is a friendly and reliable company based in Winchmore...
Mitchell & Co Building & Renovations Ltd
Mitchell & Co Building & Renovations Ltd is an established extension buildering business in Winchmore Hill. We come highly recommended and provide ...
jesson ladscaping and construction
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Be Illuminated
Be Illuminated are here to help customers who need an Extension Builder in Winchmore Hill. We offer a competitive rate to complete all your extensi...
Steve Knight Construction
Steve Knight Construction is a High Wycombe based Building Company with 38 years experience in all aspects of the Construction Industry. We are abl...
JAYEM BUILDING SERVICES LTD
Need to find an Extension Builder near you for all your extension buildering work?
JAYEM BUILDING SERVICES LTD provides a local, trusted ex...
Charts Project Management and Build
Our building services company Charts Project Management and Build has been helping customers in Buckinghamshire and the surrounding area by providi...
Shaks build
Trusted and professional extension builder in Winchmore Hill. Experienced in all extension buildering work and keeping within budget and on quote. ...
Loudwater Building Services
Need to find an Extension Builder near you for all your extension buildering work?
Loudwater Building Services provides a local, trusted ex...
Chris Warren Construction Ltd
Chris Warren Construction Ltd is an established extension buildering business in Winchmore Hill. We come highly recommended and provide competitive...
BALECOURT BUILDERS LIMITED
Sats MALHOTRA
BEEN AROUND A LONG TIME, WE WILL ONLY NOW TAKE ON ONE CONTRACT AT A TIME, WHEN ONES FINISHING WE START THE NEXT ONE IF POSSABLE, THUS GIVING ...
"Do not use this company, they caused over £350000 worth defects on a new build, this is still ongoing, property built in 2009, still having issues in 2018." - LONDON,reviewed 02/02/18, CLIVE BOWDEN
Timeless Interiors
Personable and individual interior design service designed around what you love.
E E Construction
E E Construction is an established extension buildering business in Winchmore Hill. We come highly recommended and provide competitive quotes for y...
CONSIDERATE BUILDING LIMITED
CONSIDERATE BUILDING LIMITED are here to help customers who need an Extension Builder in Winchmore Hill. We offer a competitive rate to complete al...
J MCNAMEE J & J BUILDERS
Relax... you have found a reliable extension builder in Winchmore Hill. J MCNAMEE J & J BUILDERS is a friendly and reliable company based in Winchm...
Bantry Construction Limited
Kevin Ocallaghanp
Need an Extension Builder in Winchmore Hill? Bantry Construction Limited has been helping local clients (20 mile radius) with their extension build...
KATELL PROPERTY MAINTENANCE
KATELL PROPERTY MAINTENANCE is a trusted extension builder serving customers in Winchmore Hill and the surrounding area. Contact us to today to get...
Compare Winchmore Hill extension builders rates
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Extension Builders near Chesham | £42 | £277 |
| Extension Builders near Hazlemere | £40 | £272 |
| Extension Builders near Gerrards Cross | £43 | £283 |
| Extension Builders near Rickmansworth | £43 | £282 |
| Extension Builders near Berkhamsted | £41 | £273 |
| Extension Builders near Dacorum | £42 | £275 |
| Extension Builders near High Wycombe | £39 | £272 |
| Extension Builders near Hemel Hempstead | £43 | £276 |
| Extension Builders near Wycombe | £40 | £271 |
| Extension Builders near Watford | £43 | £280 |
Job estimates from extension builders near you
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.

Build a timber frame extension - £26,256

Garden office - £10,256

Granny annexe - £87,256

Build a flat roof extension - £22,256

Convert a Garage - £16,256

Hip to gable loft conversion - £42,256

Convert a bungalow loft - £29,256

Build a dormer loft conversion - £42,256

Build a swimming pool - £81,256

Build a Mansard loft conversion - £52,256

Concrete foundations - £6,506

Underpin a building - £17,756

Two storey extension - £88,384

Convert a basement - £40,380

Side return extension - £44,380

Loft conversion - £36,150

Garage - £18,756

Single storey extension - £60,120

Outbuilding - £10,256

Install an RSJ - £2,456

Build a kitchen extension - £42,256
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