Name: Extension Builder
Brand: HaMuch
SKU: extension-renovation
Rating: 4.6 (5 reviews)

Find affordable Letchworth extension builders now

Extension builders rates in Letchworth range from £23/hour £213/day (L P L Property Services Limited) to £76/hour £313/day (Precision Roofing & Building Maintenance). To see prices and availability now for your job click green button.

HaMuch is Excellent

How HaMuch saves you money

Post your job for free

We send your job to ALL Letchworth extension builders

Compare quotes

Available extension builders in Letchworth reply

Save Money

Select your affordable Letchworth extension builder

Post your job

Sort by

"Kitchen extension" - HITCHIN, job posted 03/06/26

"Side return extension" - SG4, job posted 01/03/26

"Kitchen extension" - SG1, job posted 18/11/25

"Single storey extension" - STEVENAGE, job posted 08/11/25

"Single storey extension" - LETCHWORTH, job posted 30/05/24

Compare Letchworth extension builders rates

Compare Letchworth extension builders rates (excluding VAT or callout charges)
Location in UK	Hourly Rate	Daily Rate
Extension Builders near Letchworth	£44	£283
Extension Builders near North Hertfordshire	£44	£283
Extension Builders near Hitchin	£43	£283
Extension Builders near Stevenage	£44	£282
Extension Builders near Biggleswade	£41	£268
Extension Builders near East Hertfordshire	£44	£289
Extension Builders near Mid Bedfordshire	£42	£276
Extension Builders near Luton	£42	£279
Extension Builders near Ampthill	£38	£258
Extension Builders near Harpenden	£45	£282

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 - £26,240

Garden office - £10,240

Granny annexe - £87,240

Build a flat roof extension - £22,240

Convert a Garage - £16,240

Hip to gable loft conversion - £42,240

Convert a bungalow loft - £29,240

Build a dormer loft conversion - £42,240

Build a swimming pool - £81,240

Build a Mansard loft conversion - £52,240

Concrete foundations - £6,490

Underpin a building - £17,740

Two storey extension - £88,360

Convert a basement - £40,200

Side return extension - £44,200

Loft conversion - £36,000

Garage - £18,740

Single storey extension - £59,800

Outbuilding - £10,240

Install an RSJ - £2,440

Build a kitchen extension - £42,240

More extensions & conversions cost guides...

People in Letchworth 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