Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Bill Matharu
Matharu Buildings is an established extension buildering business in Ruislip. We come highly recommended and provide competitive quotes for your wo...
UK Food
Need to find an Extension Builder near you for all your extension buildering work?
Mamma V's Caribbean and English Cuisine provides a local...
Ruislip, HA4
Relax... you have found a reliable extension builder in Ruislip. C T Edwards is a friendly and reliable company based in Ruislip who consider no jo...
SS Building Services is a trusted extension builder serving customers in Ruislip and the surrounding area. Contact us to today to get a competitive...
Vital Builders are here to help customers who need an Extension Builder in Ruislip. We offer a competitive rate to complete all your extension buil...
DeHavilland Design and Build have more than 12 years of experience working on major refurbishments, extensions and renovations in Central & West Lo...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Need to find an Extension Builder near you for all your extension buildering work?
Adams Build and Design LTD. provides a local, trusted ex...
Coste + Beno is an experienced construction business with a strong residential background. We pride ourselves on balancing architectural ingenuity ...

Outbuilding costs in Ruislip range from the cheapest of £8,040 (Adams Build and Design LTD. based in Ha6) to the dearest of £10,464 (Coste + Beno Ltd based in HA6), but these are just estimates.
Comparing extension builders estimates for building an outbuilding gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Get rates and quotes to build an outbuilding in Ruislip by posting a job with HaMuch and we will send it to extension builders.
"Outbuilding" - HA4, job posted 03/11/25
| Borough in London |
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| Outbuilding in Ruislip |
| Outbuilding in Pinner |
| Outbuilding in Rayners Lane |
| Outbuilding in Hillingdon |
| Outbuilding in Northolt |
| Outbuilding in Northwood |
| Outbuilding in Yeading |
| Outbuilding in Harrow |
| Outbuilding in Denham |
| Outbuilding in Greenford |
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 - £17,486

Two storey extension - £87,980

Build a timber frame extension - £25,986

Build a swimming pool - £80,986

Single storey extension - £54,728

Side return extension - £41,347

Install an RSJ - £2,186

Outbuilding - £9,986

Build a Mansard loft conversion - £51,986

Loft conversion - £33,623

Build a kitchen extension - £41,986

Hip to gable loft conversion - £41,986

Granny annexe - £86,986

Garden office - £9,986

Convert a Garage - £15,986

Garage - £18,486

Build a flat roof extension - £21,986

Build a dormer loft conversion - £41,986

Concrete foundations - £6,236

Convert a bungalow loft - £28,986

Convert a basement - £37,347