Name: Extension Builder
Brand: HaMuch
SKU: extension-renovation
Rating: 4.58 (20 reviews)

Need help with a job?

Find affordable Cregagh extension builders

Prices range from cheapest £21/hour and £142/day (Mount Oriel Conversions & Extensions) to £26/hour and £186/day (Finch Construction NI) - average £23/hr

HaMuch is Excellent

Local Cregagh extension builders

"Build a dormer loft conversion" - BT11, job posted 02/09/26

"Single storey extension" - BT14, job posted 28/08/26

"Single storey extension" - BT11, job posted 03/08/26

"Loft conversion" - BELFAST, job posted 28/06/26

"New bathroom" - BT12, job posted 25/04/26

"Loft conversion" - BT8, job posted 24/04/26

"RSJ installation" - BELFAST, job posted 23/02/26

"Single storey extension" - BELFAST, job posted 21/02/26

"Single storey extension" - BELFAST, job posted 03/02/26

"Loft conversion" - BELFAST, job posted 14/11/25

"Loft conversion" - BELFAST, job posted 08/11/25

"Loft conversion" - BELFAST, job posted 07/11/25

"Single storey extension" - BELFAST, job posted 27/10/25

"2 single story room extensions Kitchen dining - 6.5x 4m And master bedroom 5.7mx 3.5m" - BELFAST, job posted 26/10/25

"Single storey extension" - BELFAST, job posted 16/10/25

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 Cregagh extension builders rates

Compare Cregagh extension builders rates (excluding VAT or callout charges)
Location in UK	Hourly Rate	Daily Rate
Extension Builders near Belfast	£23	£161
Extension Builders near Carryduff	£23	£158
Extension Builders near Holywood	£23	£159
Extension Builders near Comber	£22	£160
Extension Builders near Ballygowan	£24	£183
Extension Builders near Lisburn	£24	£164
Extension Builders near Greenisland	£23	£153
Extension Builders near Saintfield	£23	£162
Extension Builders near Hillsborough and Culcavy	£25	£170
Extension Builders near Bangor	£24	£183

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 - £25,304

Garden office - £9,304

Granny annexe - £86,304

Build a flat roof extension - £21,304

Convert a Garage - £15,304

Hip to gable loft conversion - £41,304

Convert a bungalow loft - £28,304

Build a dormer loft conversion - £41,304

Build a swimming pool - £80,304

Build a Mansard loft conversion - £51,304

Concrete foundations - £5,554

Underpin a building - £16,804

Two storey extension - £86,956

Convert a basement - £29,670

Side return extension - £33,670

Loft conversion - £27,225

Garage - £17,804

Single storey extension - £41,080

Outbuilding - £9,304

Install an RSJ - £1,504

Build a kitchen extension - £41,304

More extensions & conversions cost guides...

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