Cost to Build a Single Storey Extension in W1K

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Build a single storey extension in W1K from £55,480

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Single storey extension cost in W1K

Extension builder estimates (based on hourly rates) to build a single storey extension in W1K

Estimates for single storey extension near W1K

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

Estimates for common extension builder jobs in W1K;

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 - £17,704

Two storey extension

Two storey extension - £88,306

Build a timber frame extension

Build a timber frame extension - £26,204

Build a swimming pool

Build a swimming pool - £81,204

Single storey extension

Single storey extension - £59,080

Side return extension

Side return extension - £43,795

Install an RSJ

Install an RSJ - £2,404

Outbuilding

Outbuilding - £10,204

Build a Mansard loft conversion

Build a Mansard loft conversion - £52,204

Loft conversion

Loft conversion - £35,663

Build a kitchen extension

Build a kitchen extension - £42,204

Hip to gable loft conversion

Hip to gable loft conversion - £42,204

Granny annexe

Granny annexe - £87,204

Garden office

Garden office - £10,204

Convert a Garage

Convert a Garage - £16,204

Garage

Garage - £18,704

Build a flat roof extension

Build a flat roof extension - £22,204

Build a dormer loft conversion

Build a dormer loft conversion - £42,204

Concrete foundations

Concrete foundations - £6,454

Convert a bungalow loft

Convert a bungalow loft - £29,204

Convert a basement

Convert a basement - £39,795

More extensions & conversions cost guides...