Name: Extension Builder
Brand: HaMuch
SKU: extension-renovation
Rating: 4.73 (20 reviews)

Find affordable M20 extension builders

Prices range from cheapest £28/hour and £202/day (Brookmeade Building) to £35/hour and £260/day (Superiorum contractor & consultant) - average £31/hr and £226/day

HaMuch is Excellent

Local M20 extension builders & latest jobs

"I had a bad job done already from decorated called stephen" - M13, job posted 25/08/26

"Two storey extension" - STOCKPORT, job posted 31/07/26

"Side return extension" - M16, job posted 04/07/26

"Single storey extension" - MANCHESTER, job posted 02/06/26

"Rear extension, ensuite and living room" - M15, job posted 03/04/26

"Single storey extension" - SK8, job posted 21/03/26

"HANG 3 NEW DOORS IN NEW FRAMES" - M18, job posted 15/03/26

"Rear extension" - M43, job posted 27/01/26

"Single storey extension" - MANCHESTER, job posted 19/01/26

"Timber frame extension" - M2, job posted 26/12/25

"Single storey extension" - STOCKPORT, job posted 18/09/25

"3-4m single story extension for rear facade including kitchen and dining area including sloping roof with velux windows and sliding doors. Includes for relocation of services for water, waste and drainage" - STOCKPORT, job posted 22/08/25

"Loft conversion" - M21, job posted 06/08/25

"Need bedroom 2 knocking into bathroom using some space to create bedroom 2 bigger as it’s small and the bathroom then taking a bit of space from bedroom 3 as it is a lot bigger." - M18, job posted 18/06/25

"Knock kitchen wall down and Install an RSJ" - M33, job posted 09/05/25

"Side return extension" - M20, job posted 26/04/25

"Looking for price for a dormer for 2 bed terraced house" - M19, job posted 08/04/25

"Timber frame extension" - MANCHESTER, job posted 24/02/25

"Loft conversion" - MANCHESTER, job posted 15/02/25

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 M20 extension builders rates

Compare M20 extension builders rates (excluding VAT or callout charges)
Location in UK	Hourly Rate	Daily Rate
Extension Builders near Gatley	£31	£230
Extension Builders near Old Trafford	£32	£236
Extension Builders near Reddish	£34	£236
Extension Builders near Wythenshawe	£31	£229
Extension Builders near Cheadle Hulme	£31	£232
Extension Builders near Stretford	£32	£235
Extension Builders near Manchester	£32	£236
Extension Builders near Sale	£32	£235
Extension Builders near Stockport	£35	£234
Extension Builders near Salford	£32	£238

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 - £25,840

Garden office - £9,840

Granny annexe - £86,840

Build a flat roof extension - £21,840

Convert a Garage - £15,840

Hip to gable loft conversion - £41,840

Convert a bungalow loft - £28,840

Build a dormer loft conversion - £41,840

Build a swimming pool - £80,840

Build a Mansard loft conversion - £51,840

Concrete foundations - £6,090

Underpin a building - £17,340

Two storey extension - £87,760

Convert a basement - £35,700

Side return extension - £39,700

Loft conversion - £32,250

Garage - £18,340

Single storey extension - £51,800

Outbuilding - £9,840

Install an RSJ - £2,040

Build a kitchen extension - £41,840

More extensions & conversions cost guides...

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