From £88,072
Experienced extension builder ready to quote for your work. J&J Building Solutions is the best extension builder in Hornchurch. No obligation free ...
From £88,840
Our homes need to be regularly maintained and from time to time they need to be rejuvenated, modernised and enhanced. When it comes to building wor...
From £88,144
Experienced extension builder ready to quote for your work. Mr is the best extension builder in Hornchurch. No obligation free quotes and many happ...
From £87,976
JK Doors is a trusted extension builder serving customers in Hornchurch and the surrounding area. Contact us to today to get a competitive quote fo...
From £88,288
NIECEIC / NAAPIT GASSAFE WATER REGULATIONS We offer services towards completion of high end construction projects to dis...
From £88,588
Need an Extension Builder in Hornchurch? Samuele Paolini has been helping local clients (5 mile radius) with their extension buildering jobs for m...
From £88,468
skilled worker who specializes in completing a wide range of building and renovation projects
From £88,924
HOUSE BUILDING SERVICES LIMITED is a trusted extension builder serving customers in Hornchurch and the surrounding area. Contact us to today to get...
From £87,832
Member since April 2025
Trusted and professional extension builder in Hornchurch. Experienced in all extension buildering work and keeping within budget and on quote. GR M...
From £88,300
Relax... you have found a reliable extension builder in Hornchurch. Derryard Construction Ltd is a friendly and reliable company based in Hornchurc...

Costs range from £87,832 (GR MAINTENANCE LTD based in IG11) to £88,924 (HOUSE BUILDING SERVICES LIMITED based in DA16), but these are just estimates. The best way to compare costs is to get real quotes from real builders.
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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 - £17,729

Two storey extension - £88,343

Build a timber frame extension - £26,229

Build a swimming pool - £81,229

Single storey extension - £59,576

Side return extension - £44,074

Install an RSJ - £2,429

Outbuilding - £10,229

Build a Mansard loft conversion - £52,229

Loft conversion - £35,895

Build a kitchen extension - £42,229

Hip to gable loft conversion - £42,229

Granny annexe - £87,229

Garden office - £10,229

Convert a Garage - £16,229

Garage - £18,729

Build a flat roof extension - £22,229

Build a dormer loft conversion - £42,229

Concrete foundations - £6,479

Convert a bungalow loft - £29,229

Convert a basement - £40,074