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

Find affordable Windsor & Maidenhead extension builders now

Extension builders rates in Windsor & Maidenhead range from £30/hour £240/day (Lp Townsend Brickwork) to £48/hour £309/day (ASAP Roofing & Exterior Maintenance). To see prices and availability now for your job click green button.

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"I need lentil putting In above my bay window" - SL5, job posted 30/10/26

"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

"Side return extension" - WINDSOR, job posted 06/03/26

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

"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

"Two storey extension" - WINDSOR, job posted 14/04/25

"Loft conversion ( dormer )" - WINDSOR & MAIDENHEAD, job posted 29/03/25

"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

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

Compare Windsor & Maidenhead extension builders rates

Compare Windsor & Maidenhead extension builders rates (excluding VAT or callout charges)
Location in UK	Hourly Rate	Daily Rate
Extension Builders near Windsor & Maidenhead	£42	£272
Extension Builders near Windsor	£41	£271
Extension Builders near Slough	£42	£272
Extension Builders near Egham	£42	£266
Extension Builders near Staines-upon-Thames	£42	£269
Extension Builders near Maidenhead	£41	£273
Extension Builders near Ascot	£41	£276
Extension Builders near Bracknell Forest	£40	£270
Extension Builders near Bracknell	£40	£269
Extension Builders near Hillingdon	£43	£276

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 - £26,184

Garden office - £10,184

Granny annexe - £87,184

Build a flat roof extension - £22,184

Convert a Garage - £16,184

Hip to gable loft conversion - £42,184

Convert a bungalow loft - £29,184

Build a dormer loft conversion - £42,184

Build a swimming pool - £81,184

Build a Mansard loft conversion - £52,184

Concrete foundations - £6,434

Underpin a building - £17,684

Two storey extension - £88,276

Convert a basement - £39,570

Side return extension - £43,570

Loft conversion - £35,475

Garage - £18,684

Single storey extension - £58,680

Outbuilding - £10,184

Install an RSJ - £2,384

Build a kitchen extension - £42,184

More extensions & conversions cost guides...

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