From £42,040
Experienced extension builder ready to quote for your work. J&J Building Solutions is the best extension builder in TN16. No obligation free quotes...
1 review
From £43,660
NIECEIC / NAAPIT GASSAFE WATER REGULATIONS We offer services towards completion of high end construction projects to dis...
"Did callout made safe my elctrical work thanks" - reviewed 16/05/23, REECYRUSSO
From £43,210
I am a qualified, builder, electrician and plumber. I have been working in the construction industry for over 23 years and have built everything fr...
From £53,020
Buci builders ltd is a trusted extension builder serving customers in TN16 and the surrounding area. Contact us to today to get a competitive quote...
From £45,010
Local Boiler Plumbing & Heating Services is an established and experienced local extension builder in TN16. Please contact us for a free, no obliga...
From £43,660
Gb construction are here to help customers who need an Extension Builder in TN16. We offer a competitive rate to complete all your extension build...
From £55,000
Member since August 2025
Banga decoration. Is Base in south London for number of year Banga decoration is a small company. Wich provide an excellent job to the custom...
From £43,570
Experienced extension builder ready to quote for your work. CC&D BUILDING LTD is the best extension builder in TN16. No obligation free quotes and ...
From £43,570
Relax... you have found a reliable extension builder in TN16. First guard Roofing is a friendly and reliable company based in TN16 who consider no ...
From £48,430
HOUSE BUILDING SERVICES LIMITED is a trusted extension builder serving customers in TN16 and the surrounding area. Contact us to today to get a com...

Comparing extension builders estimates for Side return extension 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 a side return extention by posting your job to extension builders in TN16.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Side Return Extension near Caterham | £43 | £272 |
| Side Return Extension near Sevenoaks | £38 | £234 |
| Side Return Extension near Croydon | £43 | £267 |
| Side Return Extension near Bromley | £42 | £265 |
| Side Return Extension near Redhill | £41 | £269 |
| Side Return Extension near Bexley | £42 | £265 |
| Side Return Extension near Reigate & Banstead | £41 | £271 |
| Side Return Extension near Sutton | £43 | £273 |
| Side Return Extension near Lewisham | £43 | £268 |
| Side Return Extension near Reigate | £40 | £270 |
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 - £17,910

Two storey extension - £88,616

Build a timber frame extension - £26,410

Build a swimming pool - £81,410

Single storey extension - £63,208

Side return extension - £46,117

Install an RSJ - £2,610

Outbuilding - £10,410

Build a Mansard loft conversion - £52,410

Loft conversion - £37,598

Build a kitchen extension - £42,410

Hip to gable loft conversion - £42,410

Granny annexe - £87,410

Garden office - £10,410

Convert a Garage - £16,410

Garage - £18,910

Build a flat roof extension - £22,410

Build a dormer loft conversion - £42,410

Concrete foundations - £6,660

Convert a bungalow loft - £29,410

Convert a basement - £42,117