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

Find affordable Seaforth extension builders

Extension builders rates in Seaforth range from £23/hour £174/day (SJBuild Ltd) to £36/hour £244/day (Danny Anderson Builder). To see prices and availability now for your job click Get quotes.

HaMuch is Excellent

Sort by rates or availability

"Two storey extension" - L10, job posted 13/09/26

"Single storey extension" - L4, job posted 14/08/26

"Loft conversion" - L31, job posted 04/07/26

"Kitchen extension" - LIVERPOOL, job posted 02/07/26

"RSJ installation" - LIVERPOOL, job posted 21/06/26

"Loft conversion" - LIVERPOOL, job posted 28/01/26

"L shape extention with doom loft" - L4, job posted 27/01/26

"Two storey extension" - LIVERPOOL, job posted 12/10/25

"Loft conversion" - LIVERPOOL, job posted 04/10/25

"Loft conversion" - LIVERPOOL, job posted 24/09/25

"I would like to do an extension for between 2 to 3 meters" - L11, job posted 04/08/25

"Swimming pool" - LIVERPOOL, job posted 19/07/25

"Two storey extension" - LIVERPOOL, job posted 10/07/25

"Need an extension builder" - LIVERPOOL, job posted 22/06/25

"Kitchen extension" - LIVERPOOL, job posted 19/05/25

"Need an extension builder" - LIVERPOOL, job posted 06/05/25

"RSJ installation" - LIVERPOOL, job posted 09/04/25

"Swimming pool" - LIVERPOOL, job posted 22/03/25

"Build an outbuilding" - LIVERPOOL, job posted 23/02/25

"Loft conversion" - LIVERPOOL, job posted 03/02/25

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 Seaforth extension builders rates

Compare Seaforth extension builders rates (excluding VAT or callout charges)
Location in UK	Hourly Rate	Daily Rate
Extension Builders near Bootle	£32	£223
Extension Builders near Crosby	£33	£222
Extension Builders near Sefton	£33	£219
Extension Builders near Maghull	£33	£219
Extension Builders near Wallasey	£32	£224
Extension Builders near Liverpool	£31	£222
Extension Builders near Kirkby	£31	£223
Extension Builders near Birkenhead	£31	£219
Extension Builders near Formby	£23	£162
Extension Builders near Wirral	£31	£219

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 - £25,752

Garden office - £9,752

Granny annexe - £86,752

Build a flat roof extension - £21,752

Convert a Garage - £15,752

Hip to gable loft conversion - £41,752

Convert a bungalow loft - £28,752

Build a dormer loft conversion - £41,752

Build a swimming pool - £80,752

Build a Mansard loft conversion - £51,752

Concrete foundations - £6,002

Underpin a building - £17,252

Two storey extension - £87,628

Convert a basement - £34,710

Side return extension - £38,710

Loft conversion - £31,425

Garage - £18,252

Single storey extension - £50,040

Outbuilding - £9,752

Install an RSJ - £1,952

Build a kitchen extension - £41,752

More extensions & conversions cost guides...

People in Seaforth 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