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Select your affordable B11 extension builder
Gary Wilson
Reliable person 25 years experience
if you look on a website rated people and have a look at my ratings
Need to find an Extension Builder near you for all your extension buildering work?
Avonvale Garage Doors provides a local, trusted extensio...
AJ Home Improvements is an established extension buildering business in B11. We come highly recommended and provide competitive quotes for your wor...
Brickfast Builders is an established extension buildering business in B11. We come highly recommended and provide competitive quotes for your work....
Relax... you have found a reliable extension builder in B11. F.I.I Building Services Ltd is a friendly and reliable company based in B11 who consid...
We are a forward thinking, award winning design and build company based in Solihull in the West Midlands. We strive to deliver the best experience ...
Experienced extension builder ready to quote for your work. x10hosts is the best extension builder in B11. No obligation free quotes and many happy...
From £41,696
Need an Extension Builder in B11? BellTrim Wood Products has been helping local clients (20 mile radius) with their extension buildering jobs for m...
From £41,432
Peter Smith
Reliable and trustworthy
Also on checkatrafe
From £41,024
JAMES Crawford
we have over 13 years exp
we go that extra mile to make sure customers are 100 % happy
we cover a 20 miles radus for b26 area...

In B11, prices for dormer loft conversions range from £41,024 (J s building & maintenance services limited based in B26) to £41,984 (Brickfast Builders based in B6), but how much your conversion costs will vary depending on the size of your property, how easy access to your roof is and what you want to use the space for.
The best way to get an accurate price is to compare quotes from extension builders in B11. Post your job on HaMuch now and we'll put you in touch with available extension builders.
"Dormer loft conversion with ensuite bathroom." - BIRMINGHAM, job posted 04/11/24
"Dormer loft conversion" - SOLIHULL, job posted 11/02/25
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Dormer Loft Conversion near Birmingham | £29 | £229 |
| Build A Dormer Loft Conversion near Solihull | £29 | £231 |
| Build A Dormer Loft Conversion near Smethwick | £29 | £230 |
| Build A Dormer Loft Conversion near Oldbury | £29 | £229 |
| Build A Dormer Loft Conversion near Sutton Coldfield | £29 | £228 |
| Build A Dormer Loft Conversion near Knowle | £31 | £241 |
| Build A Dormer Loft Conversion near Halesowen | £28 | £225 |
| Build A Dormer Loft Conversion near West Bromwich | £29 | £228 |
| Build A Dormer Loft Conversion near Rowley Regis | £29 | £228 |
| Build A Dormer Loft Conversion near Sandwell | £29 | £231 |
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 - £17,222

Two storey extension - £87,584

Build a timber frame extension - £25,722

Build a swimming pool - £80,722

Single storey extension - £49,448

Side return extension - £38,377

Install an RSJ - £1,922

Outbuilding - £9,722

Build a Mansard loft conversion - £51,722

Loft conversion - £31,148

Build a kitchen extension - £41,722

Hip to gable loft conversion - £41,722

Granny annexe - £86,722

Garden office - £9,722

Convert a Garage - £15,722

Garage - £18,222

Build a flat roof extension - £21,722

Build a dormer loft conversion - £41,722

Concrete foundations - £5,972

Convert a bungalow loft - £28,722

Convert a basement - £34,377