Name: Extension Builder
Brand: HaMuch
SKU: extension-renovation
Rating: 4.75 (20 reviews)

Find affordable Horsforth extension builders

Extension builders rates in Horsforth range from £26/hour £204/day (AAA BUILDERS) to £42/hour £257/day (DAVID HARRISON BUILDING). To see prices and availability for your job click Get quotes.

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"Single storey extension. 3m permitted development at rear of 1970s semi-detached ex Council house. To be two rooms: utility and bathroom accessed from kitchen, and workshop (with sink) with access to living room. We have £25000 total maximum budget. Just need door to extension from kitchen and..." - BD10, job posted 01/07/26

"Half loft extension. Add dorma roof" - LS17, job posted 08/06/26

"Half loft extension ie just add dorma. Stairs and bathroom already in" - LS17, job posted 08/06/26

"Loft conversion" - LEEDS, job posted 07/04/26

"Flat roof extension" - LEEDS, job posted 25/02/26

"Two storey extension or loft conversion" - BD2, job posted 12/02/26

"Loft conversion" - LS11, job posted 02/02/26

"Two storey extension rear extension additional bedroom,diner and kitchen" - BD2, job posted 11/01/26

"Loft conversion with dormer, 2 rooms and a bathroom, may be open to velux option depending on space attainable. Apologies to all genuine and skilled builders trades person. Only professionals who have carried out this type of work as I will be asking for references and checking their previous..." - LEEDS, job posted 17/10/25

"Chimney opening or partial removal" - BD18, job posted 15/10/25

"Loft conversion" - LEEDS, job posted 08/10/25

"Single storey extension" - LEEDS, job posted 19/09/25

"Would like shed base done with flag stone please. 3x3 meters towards end of the garden." - BD2, job posted 17/09/25

"Loft conversion" - LEEDS, job posted 30/08/25

"I need election inmy house all electric gone off I haven't got no lights" - LEEDS, job posted 17/07/25

"To contact my old employee ; from Adam" - LS2, job posted 30/06/25

"Garage building to side of house" - LS16, job posted 30/06/25

"Two storey extension" - LEEDS, job posted 08/04/25

"" - LS17, job posted 30/03/25

"Hello. We are looking to build an extension to our home in Alwoodley, Leeds. Planning Permission just came through, and our architects are working on detailed plans. The build will include a single storey 3.5mx5.5m extension to the back of our property. Additional work: demolition of existing..." - LS17, job posted 30/03/25

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 Horsforth extension builders rates

Compare Horsforth extension builders rates (excluding VAT or callout charges)
Location in UK	Hourly Rate	Daily Rate
Extension Builders near Pudsey	£30	£226
Extension Builders near Leeds	£31	£236
Extension Builders near Chapeltown	£30	£232
Extension Builders near Shipley	£29	£226
Extension Builders near Beeston	£31	£236
Extension Builders near Bradford	£29	£224
Extension Builders near Morley	£31	£239
Extension Builders near Bingley	£30	£228
Extension Builders near Batley	£32	£239
Extension Builders near Rothwell	£30	£230

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 - £25,848

Garden office - £9,848

Granny annexe - £86,848

Build a flat roof extension - £21,848

Convert a Garage - £15,848

Hip to gable loft conversion - £41,848

Convert a bungalow loft - £28,848

Build a dormer loft conversion - £41,848

Build a swimming pool - £80,848

Build a Mansard loft conversion - £51,848

Concrete foundations - £6,098

Underpin a building - £17,348

Two storey extension - £87,772

Convert a basement - £35,790

Side return extension - £39,790

Loft conversion - £32,325

Garage - £18,348

Single storey extension - £51,960

Outbuilding - £9,848

Install an RSJ - £2,048

Build a kitchen extension - £41,848

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