Local HP15 extension builders
Steve Knight Construction
£39/hour
£266/day
Trusted and professional extension builder in HP15. Experienced in all extension buildering work and keeping within budget and on quote. Steve Knig...
"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" - CHAMINDA, HP11
Steve Knight Construction
£44/hour
£296/day
Steve Knight Construction is a High Wycombe based Building Company with 38 years experience in all aspects of the Construction Industry. We are abl...
"Loft conversion" - BEACONSFIELD
jesson ladscaping and construction
£45/hour
£299/day
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"Hip to gable Dormer loft conversion" - ABU, HIGH WYCOMBE
Chamfer Projects
£40/hour
£259/day
As a full-service provider, we are dedicated to delivering an outstanding fit out experience for all of our customers. With our innovative designs,...
"Rear and side extension to 1960s detached house" - C, HP14
Bantry Construction Limited
£43/hour
£431/day
Need an Extension Builder in HP15? Bantry Construction Limited has been helping local clients (20 mile radius) with their extension buildering jobs...
"Single storey extension" - SARA, HIGH WYCOMBE
G T Builders
£43/hour
£284/day
Trusted and professional extension builder in HP15. Experienced in all extension buildering work and keeping within budget and on quote. G T Builde...
"RSJ installation" - GREAT MISSENDEN
Charts Project Management and Build
£43/hour
£285/day
Our building services company Charts Project Management and Build has been helping customers in Buckinghamshire and the surrounding area by providi...
"Hi I was hoping to get a quote for the renovation of an entire house. It’s about 60 years old. I would need: 1. potential plastering of walls, r 2. removal of an existing kitchen & fitting of new 3. Removal of 1 bathroom & fitting of 2 4. garage conversion 5. flooring & carpet, ..." - RODRIGUEZ, HP10
E E Construction
£46/hour
£300/day
E E Construction is an established extension buildering business in HP15. We come highly recommended and provide competitive quotes for your work.<...
"Single storey extension" - HIGH WYCOMBE
CONCEPT BUILD
£43/hour
£294/day
CONCEPT BUILD are here to help customers who need an Extension Builder in HP15. We offer a competitive rate to complete all your extension builderi...
"Side return extension" - WYCOMBE
Mitchell & Co Building & Renovations Ltd
£39/hour
£255/day
Mitchell & Co Building & Renovations Ltd is an established extension buildering business in HP15. We come highly recommended and provide competitiv...
"Hi , I am looking for quote for rear extension of 76.5 sq meters? Thanks, Deven" - DEVEN, HP12
G C JONES CONSTRUCTION CO LTD
£40/hour
£272/day
Experienced extension builder ready to quote for your work. G C JONES CONSTRUCTION CO LTD is the best extension builder in HP15. No obligation free...
"7 by 6 rear extension plus loft conversion" - KHAN, HIGH WYCOMBE
PSB Builders Ltd
£39/hour
£261/day
Need to find an Extension Builder near you for all your extension buildering work?
PSB Builders Ltd provides a local, trusted extension bui...
Belvedere
£36/hour
£238/day
Belvedere is an established and experienced local extension builder in HP15. Please contact us for a free, no obligation quote and competitive rate...
Building High Wycombe
£40/hour
£262/day
Relax... you have found a reliable extension builder in HP15. Building High Wycombe is a friendly and reliable company based in HP15 who consider n...
JAMES BUILDERS
£43/hour
£288/day
Relax... you have found a reliable extension builder in HP15. JAMES BUILDERS is a friendly and reliable company based in HP15 who consider no job a...
Lazor Construction Ltd
£46/hour
£300/day
Lazor Construction Ltd are here to help customers who need an Extension Builder in HP15. We offer a competitive rate to complete all your extension...
S Halls Construction Ltd
£37/hour
£303/day
Here at S Halls Construction Ltd, we undertake all hard landscaping works. Patios, driveways, fencing and groundworks, we also cover many areas of ...
Red Oak Team LTD
£40/hour
£261/day
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Loudwater Building Services
£27/hour
£270/day
Need to find an Extension Builder near you for all your extension buildering work?
Loudwater Building Services provides a local, trusted ex...
Andy's carpets & Vinyl services
£22/hour
£162/day
we supply and install carpets and vinyl flooring, small family business , covering a ten mike radius of high wycombe, with a choose at home sample ...
The most important thing is do avoid handing over cash or paying large sums in advance. Be wary of paying cash for a cheaper job, i.e. to avoid VAT, you may be going down a slippery slope of not doing things properly which may eventually mean your job is also not done properly.
Agree when you intend to pay, ideally after you are satisfied with the completed job. If it is a big job agree a schedule of staged payments which is fair to both parties.
To avoid bad tradespeople and to ensure you can find them should they not answer a mobile;
- Get proper contact details and check them yourself
- Check if the company is verified on the Companies House website
- Get phone details, ideally a land line or 0800 number and check it
- Get a physical office address
Get quotes in writing by email or in person if possible. Getting quotes online or by text is ok (make sure you accept the offer by replying). For large projects make a written agreement, schedule of works and snagging plans as part of a working document. Also;
- Agree expected quality of workmanship and materials in advance
- When will work start and when will project be finished, what happens if project over runs ?
- How long is the guarantee on work and materials eg 12 months
- Discuss onsite behaviour in advance (no smoking, swearing or using mobile phones for non-work purposes)
- Agree that your Extension Builder will remove all debris and rubbish and what level of tidying up you want after job
Compare HP15 extension builders rates
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Extension Builders near Hazlemere | £40 | £272 |
| Extension Builders near High Wycombe | £39 | £272 |
| Extension Builders near Wycombe | £39 | £271 |
| Extension Builders near Chesham | £42 | £277 |
| Extension Builders near Gerrards Cross | £43 | £282 |
| Extension Builders near Maidenhead | £41 | £273 |
| Extension Builders near Berkhamsted | £41 | £263 |
| Extension Builders near Rickmansworth | £42 | £278 |
| Extension Builders near Dacorum | £42 | £269 |
| Extension Builders near Slough | £42 | £272 |
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 - £26,240

Garden office - £10,240

Granny annexe - £87,240

Build a flat roof extension - £22,240

Convert a Garage - £16,240

Hip to gable loft conversion - £42,240

Convert a bungalow loft - £29,240

Build a dormer loft conversion - £42,240

Build a swimming pool - £81,240

Build a Mansard loft conversion - £52,240

Concrete foundations - £6,490

Underpin a building - £17,740

Two storey extension - £88,360

Convert a basement - £40,200

Side return extension - £44,200

Loft conversion - £36,000

Garage - £18,740

Single storey extension - £59,800

Outbuilding - £10,240

Install an RSJ - £2,440

Build a kitchen extension - £42,240
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