From £9,736
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £9,936
Need to find an Extension Builder near you for all your extension buildering work?
N Morgans & Son Ltd provides a local, trusted extension ...
From £9,616
Need to find an Extension Builder near you for all your extension buildering work?
Max Sandford & San provides a local, trusted extension b...
From £9,576
Need to find an Extension Builder near you for all your extension buildering work?
G.I Davies & Son provides a local, trusted extension bui...
From £9,848
Need an Extension Builder in SA33? Graham & Co Home Improvement Specialists has been helping local clients (20 mile radius) with their extension bu...
From £9,624
D.A Fisher General Builders is an established and experienced local extension builder in SA33. Please contact us for a free, no obligation quote an...
From £9,792
Shane Griffiths & Son Ltd is a trusted extension builder serving customers in SA33 and the surrounding area. Contact us to today to get a competiti...
From £9,704
Experienced extension builder ready to quote for your work. WW BUILDERS is the best extension builder in SA33. No obligation free quotes and many ...
From £9,816
Glance Building Services is a trusted extension builder serving customers in SA33 and the surrounding area. Contact us to today to get a competitiv...
From £9,408
We are an NHBC approved builders and are a family run business
specialising in roofing , general building work and are qual...

Outbuilding costs in SA33 range from the cheapest of £9,408 (Tigerson Ltd based in SA16) to the dearest of £9,936 (N Morgans & Son Ltd based in SA33), 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 SA33 by posting a job with HaMuch and we will send it to extension builders.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Outbuilding near Carmarthenshire | £24 | £191 |
| Outbuilding near Carmarthen | £24 | £191 |
| Outbuilding near Llanelli | £25 | £196 |
| Outbuilding near Gorseinon | £25 | £196 |
| Outbuilding near Pembrokeshire | £17 | £143 |
| Outbuilding near Swansea | £25 | £197 |
| Outbuilding near Milford Haven | £15 | £134 |
| Outbuilding near Neath | £25 | £191 |
| Outbuilding near Neath Port Talbot | £26 | £188 |
| Outbuilding near Port Talbot | £26 | £188 |
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 - £17,206

Two storey extension - £87,558

Build a timber frame extension - £25,706

Build a swimming pool - £80,706

Single storey extension - £49,112

Side return extension - £38,188

Install an RSJ - £1,906

Outbuilding - £9,706

Build a Mansard loft conversion - £51,706

Loft conversion - £30,990

Build a kitchen extension - £41,706

Hip to gable loft conversion - £41,706

Granny annexe - £86,706

Garden office - £9,706

Convert a Garage - £15,706

Garage - £18,206

Build a flat roof extension - £21,706

Build a dormer loft conversion - £41,706

Concrete foundations - £5,956

Convert a bungalow loft - £28,706

Convert a basement - £34,188