Cost to Build a Single Storey Extension in SW1A

Build a single storey extension in SW1A from £19,160

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Single storey extension cost in SW1A - Sort by rates or availability

Extension builder estimates (based on hourly rates) to build a single storey extension in SW1A

Estimates for single storey extension near SW1A

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Borough in London
Single Storey Extension in Whitehall
Single Storey Extension in St James's
Single Storey Extension in Buckingham Gate
Single Storey Extension in Victoria Station
Single Storey Extension in Houses of Parliament
Single Storey Extension in Charring Cross
Single Storey Extension in Belgravia
Single Storey Extension in Piccadilly
Single Storey Extension in Savile Row
Single Storey Extension in Soho

Estimates for common extension builder jobs in SW1A;

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 - £17,652

Two storey extension

Two storey extension - £88,228

Build a timber frame extension

Build a timber frame extension - £26,152

Build a swimming pool

Build a swimming pool - £81,152

Single storey extension

Single storey extension - £58,040

Side return extension

Side return extension - £43,210

Install an RSJ

Install an RSJ - £2,352

Outbuilding

Outbuilding - £10,152

Build a Mansard loft conversion

Build a Mansard loft conversion - £52,152

Loft conversion

Loft conversion - £35,175

Build a kitchen extension

Build a kitchen extension - £42,152

Hip to gable loft conversion

Hip to gable loft conversion - £42,152

Granny annexe

Granny annexe - £87,152

Garden office

Garden office - £10,152

Convert a Garage

Convert a Garage - £16,152

Garage

Garage - £18,652

Build a flat roof extension

Build a flat roof extension - £22,152

Build a dormer loft conversion

Build a dormer loft conversion - £42,152

Concrete foundations

Concrete foundations - £6,402

Convert a bungalow loft

Convert a bungalow loft - £29,152

Convert a basement

Convert a basement - £39,210

More extensions & conversions cost guides...