From £10,016
Trusted and professional extension builder in March. Experienced in all extension buildering work and keeping within budget and on quote. PAUL BARR...
From £9,872
Oakenshield Construction Ltd is an established and experienced local extension builder in March. Please contact us for a free, no obligation quote ...
From £10,080
Need an Extension Builder in March? AVALON CONSTRUCTION has been helping local clients (20 mile radius) with their extension buildering jobs for ma...
From £9,880
PROCTOR CONSTRUCTION LTD is an established extension buildering business in March. We come highly recommended and provide competitive quotes for yo...
From £9,920
Trusted and professional extension builder in March. Experienced in all extension buildering work and keeping within budget and on quote. RBAM Cons...
From £10,016
Need to find an Extension Builder near you for all your extension buildering work?
A Sindall Building provides a local, trusted extension b...
From £9,856
TAYLOR DRIVER CONSTRUCTION LTD is a trusted extension builder serving customers in March and the surrounding area. Contact us to today to get a com...
From £9,992
R&Z Group Ltd is a trusted extension builder serving customers in March and the surrounding area. Contact us to today to get a competitive quote fo...
From £10,032
LITTLEPORT TIMBER BUILDINGS are here to help customers who need an Extension Builder in March. We offer a competitive rate to complete all your ext...
From £10,040
Need to find an Extension Builder near you for all your extension buildering work?
ADK Builders & Plumbers provides a local, trusted extens...

Outbuilding costs in March range from the cheapest of £9,856 (TAYLOR DRIVER CONSTRUCTION LTD based in CB6) to the dearest of £10,080 (AVALON CONSTRUCTION based in PE14), 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 March by posting a job with HaMuch and we will send it to extension builders.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Outbuilding near Wisbech | £34 | £255 |
| Outbuilding near Peterborough | £40 | £281 |
| Outbuilding near Ely | £40 | £279 |
| Outbuilding near Huntingdonshire | £36 | £290 |
| Outbuilding near Huntingdon | £38 | £284 |
| Outbuilding near Spalding | £32 | £238 |
| Outbuilding near King's Lynn | £33 | £254 |
| Outbuilding near Cambridge | £38 | £271 |
| Outbuilding near Kings Lynn & West Norfolk | £31 | £238 |
| Outbuilding near St Neots | £51 | £318 |
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 - £17,470

Two storey extension - £87,956

Build a timber frame extension - £25,970

Build a swimming pool - £80,970

Single storey extension - £54,408

Side return extension - £41,167

Install an RSJ - £2,170

Outbuilding - £9,970

Build a Mansard loft conversion - £51,970

Loft conversion - £33,473

Build a kitchen extension - £41,970

Hip to gable loft conversion - £41,970

Granny annexe - £86,970

Garden office - £9,970

Convert a Garage - £15,970

Garage - £18,470

Build a flat roof extension - £21,970

Build a dormer loft conversion - £41,970

Concrete foundations - £6,220

Convert a bungalow loft - £28,970

Convert a basement - £37,167