Cost to Build a Single Storey Extension in W1

Build a single storey extension in W1 from £53,880

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Single storey extension cost in W1

Extension builder estimates (based on hourly rates) to build a single storey extension in W1

Estimates for single storey extension near W1

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Borough in London
Single Storey Extension in City of Westminster
Single Storey Extension in Regent Street
Single Storey Extension in Oxford Street
Single Storey Extension in Savile Row
Single Storey Extension in Harley Street
Single Storey Extension in Soho
Single Storey Extension in Fitzrovia
Single Storey Extension in Mayfair
Single Storey Extension in Paddington
Single Storey Extension in Tottenham Court Road

Estimates for common extension builder jobs in W1;

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 - £17,678

Two storey extension

Two storey extension - £88,268

Build a timber frame extension

Build a timber frame extension - £26,178

Build a swimming pool

Build a swimming pool - £81,178

Single storey extension

Single storey extension - £58,568

Side return extension

Side return extension - £43,507

Install an RSJ

Install an RSJ - £2,378

Outbuilding

Outbuilding - £10,178

Build a Mansard loft conversion

Build a Mansard loft conversion - £52,178

Loft conversion

Loft conversion - £35,423

Build a kitchen extension

Build a kitchen extension - £42,178

Hip to gable loft conversion

Hip to gable loft conversion - £42,178

Granny annexe

Granny annexe - £87,178

Garden office

Garden office - £10,178

Convert a Garage

Convert a Garage - £16,178

Garage

Garage - £18,678

Build a flat roof extension

Build a flat roof extension - £22,178

Build a dormer loft conversion

Build a dormer loft conversion - £42,178

Concrete foundations

Concrete foundations - £6,428

Convert a bungalow loft

Convert a bungalow loft - £29,178

Convert a basement

Convert a basement - £39,507

More extensions & conversions cost guides...