From £86,520
Relax... you have found a reliable extension builder in Penmaenmawr. Property Maintenance Solutions is a friendly and reliable company based in Pen...
From £86,720
Need an Extension Builder in Penmaenmawr? Hughes Construction has been helping local clients (20 mile radius) with their extension buildering jobs ...
From £86,872
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £86,744
Fiting of door internal/external All joinery work from new joists to fitting off skirting boards Kitchen fitting Staircase or replac...
From £86,576
Relax... you have found a reliable extension builder in Penmaenmawr. UK Leisure Living Ltd is a friendly and reliable company based in Penmaenmawr ...
From £86,800
Need an Extension Builder in Penmaenmawr? Chris's Roofing & Property Maintenance has been helping local clients (20 mile radius) with their extensi...
From £86,728
Need to find an Extension Builder near you for all your extension buildering work?
W F CLAYTON & CO LTD provides a local, trusted extension...
From £86,256
Building & Flat Roofing Contractors is a trusted extension builder serving customers in Penmaenmawr and the surrounding area. Contact us to today t...
From £86,832
Wood floor services is a trusted extension builder serving customers in Penmaenmawr and the surrounding area. Contact us to today to get a competi...
From £86,416
Octagon Construction Ltd is a trusted extension builder serving customers in Penmaenmawr and the surrounding area. Contact us to today to get a com...

Building a granny annexe ranges from £86,256 (Building & Flat Roofing Contractors based in LL54) to £86,872 (Brothers Construction based in LL18), 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 Penmaenmawr by posting a job with HaMuch. We will send it to extension builders in Penmaenmawr who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Conwy | £28 | £211 |
| Granny Annexe near Conway | £28 | £211 |
| Granny Annexe near Llandudno | £28 | £211 |
| Granny Annexe near Colwyn Bay | £28 | £211 |
| Granny Annexe near Rhyl | £28 | £209 |
| Granny Annexe near Prestatyn | £29 | £213 |
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 - £17,146

Two storey extension - £87,470

Build a timber frame extension - £25,646

Build a swimming pool - £80,646

Single storey extension - £47,928

Side return extension - £37,522

Install an RSJ - £1,846

Outbuilding - £9,646

Build a Mansard loft conversion - £51,646

Loft conversion - £30,435

Build a kitchen extension - £41,646

Hip to gable loft conversion - £41,646

Granny annexe - £86,646

Garden office - £9,646

Convert a Garage - £15,646

Garage - £18,146

Build a flat roof extension - £21,646

Build a dormer loft conversion - £41,646

Concrete foundations - £5,896

Convert a bungalow loft - £28,646

Convert a basement - £33,522