Name: Extension Builder
Brand: HaMuch
SKU: extension-renovation
Rating: 4.7 (20 reviews)

Find local affordable B64 extension builders

Cheapest £24/hour & £196/day (ARGENT BUILDERS LTD) to £33/hour & £257/day (Home Renovation Solutions ) - average £29/hour & £230/day

Sort by rates or availability

"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

"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

"Cost to build a single storey extension" - DY8, job posted 11/07/25

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

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

"Loft conversion Hip to Gabel End 1930s house, full width rear dormer, semi detached property, New staircase to conversion required. 2 VELUX windows to front, to include basic ensuite shower room, elecrical work, french doors and juliet balcony in dormer with two separate double glazed windows to..." - STOURBRIDGE, job posted 21/09/23

"Dear Sir / Madam We're in the process of buying the home below and would like to get a very rough ballpark figure for a loft conversion, including ensuite bathroom and staircase: I've attached an image of the roof from Google Satellite View, from the rear aspect of the home, where I believe a..." - B32, job posted 24/08/23

"I would like a car port fitted" - DY1, job posted 20/08/23

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 B64 extension builders rates

Compare B64 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 Halesowen	£29	£227
Extension Builders near Brierley Hill	£28	£222
Extension Builders near Dudley	£28	£225
Extension Builders near Oldbury	£29	£227
Extension Builders near Stourbridge	£28	£223
Extension Builders near Tipton	£29	£227
Extension Builders near West Bromwich	£29	£227
Extension Builders near Kingswinford	£28	£221
Extension Builders near Smethwick	£29	£226

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 B64 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