Experienced extension builder ready to quote for your work. J&J Building Solutions is the best extension builder in UB11. No obligation free quotes...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Matharu Buildings is an established extension buildering business in UB11. We come highly recommended and provide competitive quotes for your work....
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Member since July 2020
EB Construction & Building Ltd are here to help customers who need an Extension Builder in UB11. We offer a competitive rate to complete all your e...
Relax... you have found a reliable extension builder in UB11. M & A UK Ltd is a friendly and reliable company based in UB11 who consider no job as ...
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
Maintenance and repair
Family run business from 2006

Building a granny annexe ranges from £87,000 (EB Construction & Building Ltd based in HP2) to £87,432 (MM-Builders based in N9), but these are just estimates that can help give you an idea of who will be better value in your area.
The best thing to do is to get quotes to build a granny annexe in UB11 by posting a job with HaMuch. We will send it to extension builders in UB11 who will be happy to help you.
| Borough in London |
|---|
| Granny Annexe in Stockley Park |
| Granny Annexe in West Drayton |
| Granny Annexe in Uxbridge |
| Granny Annexe in Hayes |
| Granny Annexe in Hillingdon |
| Granny Annexe in Yeading |
| Granny Annexe in Iver |
| Granny Annexe in Heathrow |
| Granny Annexe in Southall |
| Granny Annexe in Southall |
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 - £17,721

Two storey extension - £88,331

Build a timber frame extension - £26,221

Build a swimming pool - £81,221

Single storey extension - £59,416

Side return extension - £43,984

Install an RSJ - £2,421

Outbuilding - £10,221

Build a Mansard loft conversion - £52,221

Loft conversion - £35,820

Build a kitchen extension - £42,221

Hip to gable loft conversion - £42,221

Granny annexe - £87,221

Garden office - £10,221

Convert a Garage - £16,221

Garage - £18,721

Build a flat roof extension - £22,221

Build a dormer loft conversion - £42,221

Concrete foundations - £6,471

Convert a bungalow loft - £29,221

Convert a basement - £39,984