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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" - HP11, job posted 25/09/26
ABC Associates STRUCTURES 4 U
Relax... you have found a reliable extension builder in Wycombe. ABC Associates STRUCTURES 4 U is a friendly and reliable company based in Wycombe ...
"Single storey extension side extention with bathroom and two velux windows 5mx3.2m single story rear extention for dinner 2.6m x 3.5 m" - HP11, job posted 18/07/26
Building High Wycombe
Relax... you have found a reliable extension builder in Wycombe. Building High Wycombe is a friendly and reliable company based in Wycombe who cons...
"Building cluster body cluster board cluster board and +3" - SL7, job posted 16/05/26
Mitchell & Co Building & Renovations Ltd
Mitchell & Co Building & Renovations Ltd is an established extension buildering business in Wycombe. We come highly recommended and provide competi...
"Hip to gable Dormer loft conversion" - HIGH WYCOMBE, job posted 05/10/25
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...
"Single storey extension" - MARLOW, job posted 14/08/25
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...
"Rear and side extension to 1960s detached house" - HP14, job posted 23/07/25
GREENWORKS CONSTRUCTION
GREENWORKS CONSTRUCTION is an established and experienced local extension builder in Wycombe. Please contact us for a free, no obligation quote and...
"Single storey extension" - HIGH WYCOMBE, job posted 06/10/24
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...
"Single storey extension" - HIGH WYCOMBE, job posted 20/08/24
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...
"Side return extension" - WYCOMBE, job posted 10/04/24
Shaks build
Trusted and professional extension builder in Wycombe. Experienced in all extension buildering work and keeping within budget and on quote. Shaks b...
"Hi , I am looking for quote for rear extension of 76.5 sq meters? Thanks, Deven" - HP12, job posted 18/12/23
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...
"7 by 6 rear extension plus loft conversion" - HIGH WYCOMBE, job posted 16/12/23
Chris Warren Construction Ltd
Chris Warren Construction Ltd is an established extension buildering business in Wycombe. We come highly recommended and provide competitive quotes...
E E Construction
E E Construction is an established extension buildering business in Wycombe. We come highly recommended and provide competitive quotes for your wor...
Bantry Construction Limited
Kevin Ocallaghanp
Need an Extension Builder in Wycombe? Bantry Construction Limited has been helping local clients (20 mile radius) with their extension buildering j...
£37/hr
£254/day
Porter & Son Ltd
Porter & Son Ltd is a trusted extension builder serving customers in Wycombe and the surrounding area. Contact us to today to get a competitive quo...
£44/hr
£285/day
Stonehouse Consultants
Stonehouse Consultants is an independent specialist construction consultancy delivering a range of quality construction services to projects throug...
£43/hr
£284/day
G T Builders
Trusted and professional extension builder in Wycombe. Experienced in all extension buildering work and keeping within budget and on quote. G T Bui...
£39/hr
£261/day
PSB Builders Ltd
Need to find an Extension Builder near you for all your extension buildering work?
PSB Builders Ltd provides a local, trusted extension bui...
£40/hr
£259/day
Chamfer Projects
As a full-service provider, we are dedicated to delivering an outstanding fit out experience for all of our customers. With our innovative designs,...
£37/hr
£247/day
Complete Home Development
Georgie Noone has worked in the property industry for the last 15 years, undertaking house refurbishments, extensions and new builds. She has worke...
Compare Wycombe extension builders rates
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Extension Builders near Wycombe | £40 | £271 |
| Extension Builders near High Wycombe | £39 | £272 |
| Extension Builders near Hazlemere | £40 | £272 |
| Extension Builders near Maidenhead | £41 | £273 |
| Extension Builders near Chesham | £42 | £277 |
| Extension Builders near Gerrards Cross | £43 | £283 |
| Extension Builders near South Oxfordshire | £36 | £253 |
| Extension Builders near Aylesbury | £42 | £270 |
| Extension Builders near Slough | £42 | £272 |
| Extension Builders near Caversham | £38 | £265 |
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 - £26,184

Garden office - £10,184

Granny annexe - £87,184

Build a flat roof extension - £22,184

Convert a Garage - £16,184

Hip to gable loft conversion - £42,184

Convert a bungalow loft - £29,184

Build a dormer loft conversion - £42,184

Build a swimming pool - £81,184

Build a Mansard loft conversion - £52,184

Concrete foundations - £6,434

Underpin a building - £17,684

Two storey extension - £88,276

Convert a basement - £39,570

Side return extension - £43,570

Loft conversion - £35,475

Garage - £18,684

Single storey extension - £58,680

Outbuilding - £10,184

Install an RSJ - £2,384

Build a kitchen extension - £42,184
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