Name: Extension Builder
Brand: HaMuch
SKU: extension-renovation
Rating: 4.82 (17 reviews)

Find affordable RG12 extension builders

Extension builders rates in RG12 range from £24/hour £182/day (Complete Refurbishment Service) to £48/hour £311/day (ASAP Roofing & Exterior Maintenance). To see prices and availability now for your job click green button.

HaMuch is Excellent

Sort by rates or availability

"Single storey extension" - BRACKNELL FOREST, job posted 30/04/25

"Single storey extension" - BRACKNELL FOREST, job posted 11/11/24

"Single storey extension" - BRACKNELL FOREST, job posted 25/10/24

"Dormer loft conversion" - WINNERSH, job posted 29/09/24

"Loft conversion" - BRACKNELL, job posted 06/09/24

"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, ..." - RG12, job posted 04/09/24

"Garage" - BRACKNELL FOREST, job posted 22/06/24

What are the best ways to avoid problems when paying the Extension Builder?

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

Before the job starts should I agree standards of quality and behaviour?

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 RG12 extension builders rates

Compare RG12 extension builders rates (excluding VAT or callout charges)
Location in UK	Hourly Rate	Daily Rate
Extension Builders near Bracknell	£41	£285
Extension Builders near Bracknell Forest	£41	£287
Extension Builders near Wokingham	£41	£279
Extension Builders near Ascot	£41	£276
Extension Builders near Sandhurst	£41	£283
Extension Builders near Camberley	£41	£282
Extension Builders near Windsor	£41	£271
Extension Builders near Woodley	£42	£266
Extension Builders near Windsor & Maidenhead	£42	£272
Extension Builders near Farnborough	£41	£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 - £26,384

Garden office - £10,384

Granny annexe - £87,384

Build a flat roof extension - £22,384

Convert a Garage - £16,384

Hip to gable loft conversion - £42,384

Convert a bungalow loft - £29,384

Build a dormer loft conversion - £42,384

Build a swimming pool - £81,384

Build a Mansard loft conversion - £52,384

Concrete foundations - £6,634

Underpin a building - £17,884

Two storey extension - £88,576

Convert a basement - £41,820

Side return extension - £45,820

Loft conversion - £37,350

Garage - £18,884

Single storey extension - £62,680

Outbuilding - £10,384

Install an RSJ - £2,584

Build a kitchen extension - £42,384

More extensions & conversions cost guides...

People in RG12 searching for a Extension Builder also viewed...

Painter and Decorator

The Largest Database of UK Trade Rates

At HaMuch we know what tradespeople charge because we have the largest database of rates anywhere in the UK. If you want quotes for jobs at the right price for you, post your jobs with HaMuch and get your home improvements kickstarted straight away!

Appliance Repair Specialist

Conservatory Specialist