Cost to Build a Single Storey Extension in Lewisham

Build a single storey extension in Lewisham from £55,800

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Single storey extension cost in Lewisham

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

Estimates for single storey extension near Lewisham

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Single Storey Extension in Lewisham
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Estimates for common extension builder jobs in Lewisham;

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 - £17,700

Two storey extension

Two storey extension - £88,300

Build a timber frame extension

Build a timber frame extension - £26,200

Build a swimming pool

Build a swimming pool - £81,200

Single storey extension

Single storey extension - £59,000

Side return extension

Side return extension - £43,750

Install an RSJ

Install an RSJ - £2,400

Outbuilding

Outbuilding - £10,200

Build a Mansard loft conversion

Build a Mansard loft conversion - £52,200

Loft conversion

Loft conversion - £35,625

Build a kitchen extension

Build a kitchen extension - £42,200

Hip to gable loft conversion

Hip to gable loft conversion - £42,200

Granny annexe

Granny annexe - £87,200

Garden office

Garden office - £10,200

Convert a Garage

Convert a Garage - £16,200

Garage

Garage - £18,700

Build a flat roof extension

Build a flat roof extension - £22,200

Build a dormer loft conversion

Build a dormer loft conversion - £42,200

Concrete foundations

Concrete foundations - £6,450

Convert a bungalow loft

Convert a bungalow loft - £29,200

Convert a basement

Convert a basement - £39,750

More extensions & conversions cost guides...