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HOUSE BUILDING SERVICES LIMITED
Tommy House
HOUSE BUILDING SERVICES LIMITED is a trusted extension builder serving customers in SE9 and the surrounding area. Contact us to today to get a comp...
Jmc buildets
Jay Christenson
Experienced extension builder ready to quote for your work. Jmc buildets is the best extension builder in SE9. No obligation free quotes and many h...
AMJAC CONSTRUCTION LTD
Eltham, SE9
Need to find an Extension Builder near you for all your extension buildering work?
AMJAC CONSTRUCTION LTD provides a local, trusted extensi...
RLD Contractors Ltd
RLD Contractors Ltd is an established and experienced local extension builder in SE9. Please contact us for a free, no obligation quote and competi...
Pro-Tec Roofing & Building Services Ltd
Pro-Tec Roofing & Building Services Ltd is an established and experienced local extension builder in SE9. Please contact us for a free, no obligati...
Rapid Bee Ltd
Rapid Bee Ltd is an established extension buildering business in SE9. We come highly recommended and provide competitive quotes for your work.
...Aumosa Ltd
Experienced extension builder ready to quote for your work. Aumosa Ltd is the best extension builder in SE9. No obligation free quotes and many hap...
Upwards and Outwards
Relax... you have found a reliable extension builder in SE9. Upwards and Outwards is a friendly and reliable company based in SE9 who consider no j...
Hartigans Construction
Andy Hart
London, SE9
Need to find an Extension Builder near you for all your extension buildering work?
Hartigans Construction provides a local, trusted extensi...
Loft Living
Need an Extension Builder in SE9? Loft Living has been helping local clients (5 mile radius) with their extension buildering jobs for many years. G...
Cheapest builders for loft conversion in SE9
Comparing extension builders estimates for Loft conversion gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes for the cost of a loft conversion in SE9 by posting your job to extension builders in SE9.
"Loft conversion" - DA16, job posted 03/08/26
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Estimates for common extension builder jobs in SE9;
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 - £17,570
Two storey extension - £88,106
Build a timber frame extension - £26,070
Build a swimming pool - £81,070
Single storey extension - £56,408
Side return extension - £42,292
Install an RSJ - £2,270
Outbuilding - £10,070
Build a Mansard loft conversion - £52,070
Loft conversion - £34,410
Build a kitchen extension - £42,070
Hip to gable loft conversion - £42,070
Granny annexe - £87,070
Garden office - £10,070
Convert a Garage - £16,070
Garage - £18,570
Build a flat roof extension - £22,070
Build a dormer loft conversion - £42,070
Concrete foundations - £6,320
Convert a bungalow loft - £29,070
Convert a basement - £38,292