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Builders & build costs in Lewisham

Real 2026 prices for Lewisham homeowners — kitchen extensions, lofts, rear extensions and more. Regional weighting applied automatically (base rate vs. UK base).

Get a Lewisham estimate I'm a Lewisham builder

1,200+
Verified UK builders
18,000+
Homeowners served
< 90s
Avg. estimate time
4.8 / 5
Average rating

Lewisham project cost guides

Standard spec, ex-VAT, base rate

Kitchen extension

Typical kitchen extensions in Lewisham from

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Loft conversion

Typical loft conversions in Lewisham from

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Typical rear extensions in Lewisham from

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Bathroom renovation

Typical bathroom renovations in Lewisham from

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Typical garden rooms in Lewisham from

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Double-storey extension

Typical double-storey extensions in Lewisham from

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Side return extension

Typical side return extensions in Lewisham from

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Garage conversion

Typical garage conversions in Lewisham from

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Kitchen renovation

Typical kitchen renovations in Lewisham from

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Full house renovation

Typical full house renovations in Lewisham from

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Driveway installation

Typical driveway installations in Lewisham from

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Roof replacement

Typical roof replacements in Lewisham from

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Full house rewire

Typical full house rewires in Lewisham from

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Boiler replacement

Typical boiler replacements in Lewisham from

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Why Lewisham pricing is different

Local labour rates

Lewisham day-rates feed straight into every estimate — no flat UK averages.

Midlands / South West

Materials, access and overheads adjusted base rate for Greater London.

Vetted local builders

Match with verified, insured trades serving Lewisham postcodes.

Other UK cities

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