Cost to Build a Single Storey Extension in HA4

Build a single storey extension in HA4 from £52,600

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Single storey extension cost in HA4

Extension builder estimates (based on hourly rates) to build a single storey extension in HA4

Estimates for single storey extension near HA4

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Borough in London
Single Storey Extension in Ruislip
Single Storey Extension in Pinner
Single Storey Extension in Rayners Lane
Single Storey Extension in Hillingdon
Single Storey Extension in Northolt
Single Storey Extension in Northwood
Single Storey Extension in Yeading
Single Storey Extension in Harrow
Single Storey Extension in Denham
Single Storey Extension in Greenford

Estimates for common extension builder jobs in HA4;

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.

Underpin a building

Underpin a building - £17,650

Two storey extension

Two storey extension - £88,226

Build a timber frame extension

Build a timber frame extension - £26,150

Build a swimming pool

Build a swimming pool - £81,150

Single storey extension

Single storey extension - £58,008

Side return extension

Side return extension - £43,192

Install an RSJ

Install an RSJ - £2,350

Outbuilding

Outbuilding - £10,150

Build a Mansard loft conversion

Build a Mansard loft conversion - £52,150

Loft conversion

Loft conversion - £35,160

Build a kitchen extension

Build a kitchen extension - £42,150

Hip to gable loft conversion

Hip to gable loft conversion - £42,150

Granny annexe

Granny annexe - £87,150

Garden office

Garden office - £10,150

Convert a Garage

Convert a Garage - £16,150

Garage

Garage - £18,650

Build a flat roof extension

Build a flat roof extension - £22,150

Build a dormer loft conversion

Build a dormer loft conversion - £42,150

Concrete foundations

Concrete foundations - £6,400

Convert a bungalow loft

Convert a bungalow loft - £29,150

Convert a basement

Convert a basement - £39,192

More extensions & conversions cost guides...