Khondda Olham
We agree on the work, price and appointment before starting. Our approach focuses on clear communication, punctuality, careful workmanship and leav...
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...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Relax... you have found a reliable extension builder in B27. F.I.I Building Services Ltd is a friendly and reliable company based in B27 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 B27. No obligation free quotes and many happy...
From £86,432
Peter Smith
Reliable and trustworthy
Also on checkatrafe
From £86,024
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...
From £86,984
Cleaveland Fletcher
Fletcher's Building & Maintenance are a family owned business that understands, in order to achieve our continued success our customers and the...

Building a granny annexe ranges from £86,024 (J s building & maintenance services limited based in B26) to £87,048 (Darthy serices and cleaning based in B5), 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 B27 by posting a job with HaMuch. We will send it to extension builders in B27 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Solihull | £29 | £231 |
| Granny Annexe near Birmingham | £28 | £226 |
| Granny Annexe near Knowle | £31 | £241 |
| Granny Annexe near Smethwick | £28 | £225 |
| Granny Annexe near Sutton Coldfield | £29 | £228 |
| Granny Annexe near Oldbury | £29 | £226 |
| Granny Annexe near Halesowen | £28 | £225 |
| Granny Annexe near West Bromwich | £28 | £225 |
| Granny Annexe near Rowley Regis | £29 | £225 |
| Granny Annexe near Sandwell | £29 | £228 |
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 - £17,275

Two storey extension - £87,663

Build a timber frame extension - £25,775

Build a swimming pool - £80,775

Single storey extension - £50,504

Side return extension - £38,971

Install an RSJ - £1,975

Outbuilding - £9,775

Build a Mansard loft conversion - £51,775

Loft conversion - £31,643

Build a kitchen extension - £41,775

Hip to gable loft conversion - £41,775

Granny annexe - £86,775

Garden office - £9,775

Convert a Garage - £15,775

Garage - £18,275

Build a flat roof extension - £21,775

Build a dormer loft conversion - £41,775

Concrete foundations - £6,025

Convert a bungalow loft - £28,775

Convert a basement - £34,971