Cost to Build a Single Storey Extension in W1C

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Build a single storey extension in W1C from £53,880

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Single storey extension cost in W1C

Extension builder estimates (based on hourly rates) to build a single storey extension in W1C

Estimates for single storey extension near W1C

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Borough in London
Single Storey Extension in Oxford Street
Single Storey Extension in Mayfair
Single Storey Extension in City of Westminster
Single Storey Extension in Harley Street
Single Storey Extension in Paddington
Single Storey Extension in Savile Row
Single Storey Extension in Marleybone
Single Storey Extension in Regent Street
Single Storey Extension in Piccadilly
Single Storey Extension in Fitzrovia

Estimates for common extension builder jobs in W1C;

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 - £17,638

Two storey extension

Two storey extension - £88,206

Build a timber frame extension

Build a timber frame extension - £26,138

Build a swimming pool

Build a swimming pool - £81,138

Single storey extension

Single storey extension - £57,752

Side return extension

Side return extension - £43,048

Install an RSJ

Install an RSJ - £2,338

Outbuilding

Outbuilding - £10,138

Build a Mansard loft conversion

Build a Mansard loft conversion - £52,138

Loft conversion

Loft conversion - £35,040

Build a kitchen extension

Build a kitchen extension - £42,138

Hip to gable loft conversion

Hip to gable loft conversion - £42,138

Granny annexe

Granny annexe - £87,138

Garden office

Garden office - £10,138

Convert a Garage

Convert a Garage - £16,138

Garage

Garage - £18,638

Build a flat roof extension

Build a flat roof extension - £22,138

Build a dormer loft conversion

Build a dormer loft conversion - £42,138

Concrete foundations

Concrete foundations - £6,388

Convert a bungalow loft

Convert a bungalow loft - £29,138

Convert a basement

Convert a basement - £39,048

More extensions & conversions cost guides...