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

Find affordable B65 extension builders

Prices range from cheapest £24/hour and £196/day (ARGENT BUILDERS LTD) to £45/hour and £350/day (Sperin Interiors) - average £30/hr and £237/day

HaMuch is Excellent

Local B65 extension builders & latest jobs

"RSJ installation" - DY3, job posted 18/07/26

"Conservatory extension" - DY6, job posted 19/06/26

"Loft conversion" - B68, job posted 06/05/26

"Dormer loft conversion" - B62, job posted 17/03/26

"Side return extension" - STOURBRIDGE TOWN, job posted 17/02/26

"Two storey extension" - WV14, job posted 04/01/26

"Garden self contained annex" - B68, job posted 10/11/25

"Small downstairs extension to front property, to install a toilet and associated plumbing, remove small brick wall on drive" - B32, job posted 18/10/25

"Garage conversion" - STOURBRIDGE, job posted 08/10/25

"Loft conversion with trusses in place, detatched property" - TIPTON, job posted 05/09/25

"Concrete foundation" - B29, job posted 03/09/25

"New Wetroom for special needs with wheelchair access. Complete build with material,plumbing,wall panels,floor tiles.shower, toilet etc.this will be built joined with a living room. Quotes required.Thanks" - SANDWELL, job posted 26/08/25

"Two storey extension" - B68, job posted 21/07/25

"Loft extension on a semi detached" - DY4, job posted 20/07/25

"Loft extension on a semi detached" - DY4, job posted 19/07/25

"Need an extension builder" - SANDWELL, job posted 13/06/25

"WET ROOM WITH WHEELCHAIR ACCESS" - SANDWELL, job posted 05/02/25

"Underpinning" - WEST BROMWICH, job posted 17/10/24

"Loft conversion estimate on semi-detached house" - DUDLEY, job posted 20/08/24

"Quote required for only labour of a lean conservatory at the back of my garden with brick walls, 1/2 roof window(s), doors, windows, flooring, moving gutters to new build, plastering on only parts of the 3 walls where there are no windows/doors (current house exterior wall not included) and..." - B18, job posted 31/07/24

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 B65 extension builders rates

Compare B65 extension builders rates (excluding VAT or callout charges)
Location in UK	Hourly Rate	Daily Rate
Extension Builders near Rowley Regis	£29	£226
Extension Builders near Oldbury	£29	£227
Extension Builders near Halesowen	£29	£227
Extension Builders near Dudley	£28	£225
Extension Builders near West Bromwich	£29	£227
Extension Builders near Brierley Hill	£28	£222
Extension Builders near Smethwick	£29	£226
Extension Builders near Tipton	£29	£227
Extension Builders near Sandwell	£29	£229
Extension Builders near Coseley	£29	£225

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 - £25,912

Garden office - £9,912

Granny annexe - £86,912

Build a flat roof extension - £21,912

Convert a Garage - £15,912

Hip to gable loft conversion - £41,912

Convert a bungalow loft - £28,912

Build a dormer loft conversion - £41,912

Build a swimming pool - £80,912

Build a Mansard loft conversion - £51,912

Concrete foundations - £6,162

Underpin a building - £17,412

Two storey extension - £87,868

Convert a basement - £36,510

Side return extension - £40,510

Loft conversion - £32,925

Garage - £18,412

Single storey extension - £53,240

Outbuilding - £9,912

Install an RSJ - £2,112

Build a kitchen extension - £41,912

More extensions & conversions cost guides...

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