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

Find affordable Harton extension builders

Prices range from cheapest £16/hour and £130/day (OCC Construction) to £42/hour and £624/day (John Barrett Joiner Builder) - average £34/hr and £266/day

HaMuch is Excellent

Local Harton extension builders, reviews & latest jobs

"Domer building to house" - SR4, job posted 02/07/26

"Loft conversion" - SR4, job posted 02/07/26

"Two storey extension" - SR5, job posted 15/06/26

"Side return extension" - NORTH SHIELDS, job posted 17/04/26

"Dormer loft conversion" - NE29, job posted 19/03/26

"Loft conversion" - SR6, job posted 25/01/26

"Single storey extension" - NE34, job posted 08/01/26

"2 story extension back of house extended kitchen extra 2 bedrooms" - NORTH TYNESIDE, job posted 13/10/25

"2 story extension back of house" - NORTH TYNESIDE, job posted 13/10/25

"Add an extension on the gable end and open up the kitchen into the existing extension. Add skylights in the kitchen. Existing extension may be enlarged also." - NE29, job posted 05/10/25

"Add extenion on the gable end and also open out kitchen in to extension we have. Add skylights for the kitchen also." - NE29, job posted 05/10/25

"Extension to front of house, approx 2m x 4m" - NE30, job posted 04/09/25

"Loft conversion" - NORTH TYNESIDE, job posted 20/06/25

"Loft conversion" - SOUTH TYNESIDE, job posted 04/06/25

"Loft conversion" - NORTH TYNESIDE, job posted 28/09/24

"Loft conversion" - NORTH TYNESIDE, job posted 09/09/24

"Full Refurbishment Project Brief: 4 Flats and 1 shop 1. Demolition and cleaning the property of all damaged and unwanted walls, doors, windows, joists, false ceilings, floor boards, electrical and services and all others (total refub) 2. All new Electrical and Plumbing works 3. Installing new..." - SR5, job posted 23/03/24

"Loft conversion" - NORTH TYNESIDE, job posted 19/01/24

"Loft conversion" - SOUTH TYNESIDE, job posted 27/12/23

"Loft conversion" - SOUTH TYNESIDE, job posted 15/09/23

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 Harton extension builders rates

Compare Harton extension builders rates (excluding VAT or callout charges)
Location in UK	Hourly Rate	Daily Rate
Extension Builders near South Tyneside	£34	£261
Extension Builders near South Shields	£36	£257
Extension Builders near Jarrow	£34	£262
Extension Builders near Tynemouth	£36	£257
Extension Builders near Hebburn	£34	£246
Extension Builders near North Tyneside	£35	£253
Extension Builders near Wallsend	£34	£245
Extension Builders near Whitley Bay	£38	£268
Extension Builders near Sunderland	£33	£251
Extension Builders near Washington	£33	£254

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 - £26,120

Garden office - £10,120

Granny annexe - £87,120

Build a flat roof extension - £22,120

Convert a Garage - £16,120

Hip to gable loft conversion - £42,120

Convert a bungalow loft - £29,120

Build a dormer loft conversion - £42,120

Build a swimming pool - £81,120

Build a Mansard loft conversion - £52,120

Concrete foundations - £6,370

Underpin a building - £17,620

Two storey extension - £88,180

Convert a basement - £38,850

Side return extension - £42,850

Loft conversion - £34,875

Garage - £18,620

Single storey extension - £57,400

Outbuilding - £10,120

Install an RSJ - £2,320

Build a kitchen extension - £42,120

More extensions & conversions cost guides...

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