Name: Extension Builder
Brand: HaMuch
SKU: extension-renovation
Rating: 4.64 (7 reviews)

Find affordable Downton extension builders now

Extension builders rates in Downton range from £12/hour £106/day (Floortrak Limited) to £40/hour £289/day (Shape Project Management). To see prices and availability now for your job click green button.

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"Single storey extension" - SALISBURY, job posted 14/09/25

"Loft conversion" - SALISBURY, job posted 23/05/25

"Loft conversion" - SALISBURY, job posted 25/02/25

"Loft conversion" - SALISBURY, job posted 17/08/24

"Loft conversion. Thinking of buying a property in Farley which has had all preparatory work done for a loft extension ie: roof raised, velux windows , plumbing / waste and electrics ready to go. Needs a staircase from ground floor ( opening already there ) , rooms partitioned ( ideally two bedrooms..." - SP5, job posted 18/04/24

"Loft conversion" - SALISBURY, job posted 23/09/23

"Loft extension with en suite" - SP2, job posted 16/09/23

Compare Downton extension builders rates

Compare Downton extension builders rates (excluding VAT or callout charges)
Location in UK	Hourly Rate	Daily Rate
Extension Builders near Salisbury	£35	£247
Extension Builders near New Forest	£32	£245
Extension Builders near Romsey	£32	£230
Extension Builders near Test Valley	£37	£261
Extension Builders near Totton	£34	£243
Extension Builders near Chandler's Ford	£34	£245
Extension Builders near Eastleigh	£34	£244
Extension Builders near Southampton	£34	£243
Extension Builders near Andover	£40	£248
Extension Builders near Christchurch	£36	£251

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 - £25,928

Garden office - £9,928

Granny annexe - £86,928

Build a flat roof extension - £21,928

Convert a Garage - £15,928

Hip to gable loft conversion - £41,928

Convert a bungalow loft - £28,928

Build a dormer loft conversion - £41,928

Build a swimming pool - £80,928

Build a Mansard loft conversion - £51,928

Concrete foundations - £6,178

Underpin a building - £17,428

Two storey extension - £87,892

Convert a basement - £36,690

Side return extension - £40,690

Loft conversion - £33,075

Garage - £18,428

Single storey extension - £53,560

Outbuilding - £9,928

Install an RSJ - £2,128

Build a kitchen extension - £41,928

More extensions & conversions cost guides...

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