Name: Extension Builder
Brand: HaMuch
SKU: extension-renovation
Rating: 4.56 (18 reviews)

Find affordable Copmanthorpe extension builders

Prices range from cheapest £25/hour and £197/day (DRA Renovations) to £34/hour and £255/day (Sophie Brown Limited) - average £30/hr and £228/day

HaMuch is Excellent

Local Copmanthorpe extension builders, reviews & latest jobs

"Loft conversion. Convert the loft of a two bedroom mid terrace into an extra bedroom." - YO24, job posted 29/07/26

"Hi there I am wanting to have a loft conversion done to create an extra bedroom for my son. I am open to what type and quotes for each and I was wondering if you could let me know a rough starting/guide price of what I can expect. If you can get back to me by text or email that would be great thank..." - YO24, job posted 23/06/26

"Two storey extension" - YORK, job posted 25/10/25

"Two storey extension" - YORK, job posted 26/08/25

"Loft conversion" - YORK, job posted 07/08/25

"No not interested" - YORK, job posted 04/07/25

"Would like new kitchen done and dishwasher Sink yak dranking bord work top handles Flooring Tailes carpet derpting new roof plumbing plugs windows door windows sill wall paper on wall plate last ceiling paint wire covers out up every were" - YORK, job posted 04/07/25

"Loft conversion on 3 bed Semi. Dormer required but gable end already in place" - YO31, job posted 05/06/25

"Convert a garage" - YO32, job posted 10/04/25

"Side return extension" - YORK, job posted 01/03/25

"Single storey extension" - YO10, job posted 28/02/25

"Garage" - YO26, job posted 18/01/25

"Side return extension" - YORK, job posted 16/01/25

"Side return extension" - YORK, job posted 31/10/24

"Loft conversion" - YORK, job posted 04/06/24

"Side return extension" - YORK, job posted 29/10/23

"Loft conversion" - YORK, job posted 18/10/23

"Loft conversion" - YORK, job posted 31/08/23

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 Copmanthorpe extension builders rates

Compare Copmanthorpe extension builders rates (excluding VAT or callout charges)
Location in UK	Hourly Rate	Daily Rate
Extension Builders near York	£30	£229
Extension Builders near Selby	£30	£240
Extension Builders near Castleford	£30	£225
Extension Builders near Goole	£26	£217
Extension Builders near Harrogate	£29	£225
Extension Builders near Rothwell	£30	£230
Extension Builders near Pontefract	£30	£228
Extension Builders near Chapeltown	£30	£232
Extension Builders near Leeds	£31	£236
Extension Builders near Normanton	£30	£233

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 - £25,824

Garden office - £9,824

Granny annexe - £86,824

Build a flat roof extension - £21,824

Convert a Garage - £15,824

Hip to gable loft conversion - £41,824

Convert a bungalow loft - £28,824

Build a dormer loft conversion - £41,824

Build a swimming pool - £80,824

Build a Mansard loft conversion - £51,824

Concrete foundations - £6,074

Underpin a building - £17,324

Two storey extension - £87,736

Convert a basement - £35,520

Side return extension - £39,520

Loft conversion - £32,100

Garage - £18,324

Single storey extension - £51,480

Outbuilding - £9,824

Install an RSJ - £2,024

Build a kitchen extension - £41,824

More extensions & conversions cost guides...

People in Copmanthorpe 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