Name: Extension Builder
Brand: HaMuch
SKU: extension-renovation
Rating: 4.68 (20 reviews)

Find affordable Iver extension builders now

Extension builders rates in Iver range from £30/hour £235/day (Lp Townsend Brickwork) to £48/hour £305/day (GDC Design & Build). 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 Iver extension builders

Compare quotes

Available extension builders in Iver reply

Save Money

Select your affordable Iver extension builder

Post your job

Sort by

"I need lentil putting In above my bay window" - FARHAM COMMON, job posted 30/10/26

"Loft conversion" - SL1, job posted 16/08/26

"Loft conversion" - SLOUGH, job posted 03/07/26

"Outbuilding" - SLOUGH, job posted 28/04/26

"I down loft extension, garage all house renovation, driveway many other" - SL3, job posted 17/03/26

"Outbuilding" - HA4, job posted 16/03/26

"Remove internal wall , fit RSJ , plaster ceiling" - SL1, job posted 31/01/26

"Flat roof extension" - WEST DRAYTON, job posted 23/11/25

"Garden office" - SL2, job posted 27/08/25

"Outbuilding" - SLOUGH, job posted 27/08/25

"Single storey extension" - SLOUGH, job posted 09/08/25

"Loft conversion" - SLOUGH, job posted 21/06/25

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

"RSJ installation" - SLOUGH, job posted 07/05/25

"Rip off - install RSJ beam (3 meter) rear wall, Garage knock, knock dining wall, partially knock sitting wall. It's 1950 semi-detached house and solid walls." - SL3, job posted 25/02/25

"Rip off - one RSJ beam (3 meter) rear wall, brick work for closing 3 door holes, Garage knock, knock dining wall, partially knock sitting wall." - SL3, job posted 24/02/25

"Mansard loft conversion" - HAYES, job posted 10/01/25

"Outbuilding" - SLOUGH, job posted 05/10/24

"Outbuilding" - SLOUGH, job posted 17/06/24

Compare Iver extension builders rates

Compare Iver extension builders rates (excluding VAT or callout charges)
Location in UK	Hourly Rate	Daily Rate
Extension Builders near Hillingdon	£43	£276
Extension Builders near Slough	£42	£272
Extension Builders near Windsor & Maidenhead	£42	£272
Extension Builders near Gerrards Cross	£43	£283
Extension Builders near Windsor	£41	£271
Extension Builders near Staines-upon-Thames	£42	£269
Extension Builders near Egham	£42	£266
Extension Builders near Hounslow	£43	£272
Extension Builders near Rickmansworth	£43	£282
Extension Builders near Harrow	£43	£270

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 - £26,192

Garden office - £10,192

Granny annexe - £87,192

Build a flat roof extension - £22,192

Convert a Garage - £16,192

Hip to gable loft conversion - £42,192

Convert a bungalow loft - £29,192

Build a dormer loft conversion - £42,192

Build a swimming pool - £81,192

Build a Mansard loft conversion - £52,192

Concrete foundations - £6,442

Underpin a building - £17,692

Two storey extension - £88,288

Convert a basement - £39,660

Side return extension - £43,660

Loft conversion - £35,550

Garage - £18,692

Single storey extension - £58,840

Outbuilding - £10,192

Install an RSJ - £2,392

Build a kitchen extension - £42,192

More extensions & conversions cost guides...

People in Iver 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