From £51,512
N W Doyle & Son is a trusted extension builder serving customers in BT23 and the surrounding area. Contact us to today to get a competitive quote f...
From £51,400
T.I Building is a trusted extension builder serving customers in BT23 and the surrounding area. Contact us to today to get a competitive quote for ...
From £51,136
Need to find an Extension Builder near you for all your extension buildering work?
Mount Oriel Conversions & Extensions provides a local, t...
From £51,368
Relax... you have found a reliable extension builder in BT23. SM Plumbing & Heating is a friendly and reliable company based in BT23 who consider n...
From £51,336
Trusted and professional extension builder in BT23. Experienced in all extension buildering work and keeping within budget and on quote. Belfast Lo...
From £51,296
Ballantine building solutions is an established extension buildering business in BT23. We come highly recommended and provide competitive quotes fo...
From £51,272
apex pharaoh ltd is a trusted extension builder serving customers in BT23 and the surrounding area. Contact us to today to get a competitive quote ...
From £51,176
Trusted and professional extension builder in BT23. Experienced in all extension buildering work and keeping within budget and on quote. Extended l...
From £51,384
Designco Ltd is an established extension buildering business in BT23. We come highly recommended and provide competitive quotes for your work.
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Mansard loft conversions range from the cheapest installation of £51,136 (Mount Oriel Conversions & Extensions based in BT8) to the dearest of around £51,512 (N W Doyle & Son based in BT24).
While these estimates give you a good idea how much you'll pay for a mansard loft conversion, the only way to get an accurate price is to get real quotes from real builders.
Get quotes to install a mansard loft conversion in BT23 by posting a job with HaMuch and we'll send it to extension builders in BT23.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Mansard Loft Conversion near Ballygowan | £24 | £183 |
| Build A Mansard Loft Conversion near Comber | £22 | £160 |
| Build A Mansard Loft Conversion near Bangor | £24 | £183 |
| Build A Mansard Loft Conversion near Bangor | £24 | £183 |
| Build A Mansard Loft Conversion near Holywood | £23 | £159 |
| Build A Mansard Loft Conversion near Carryduff | £23 | £158 |
| Build A Mansard Loft Conversion near Saintfield | £23 | £162 |
| Build A Mansard Loft Conversion near Belfast | £23 | £161 |
| Build A Mansard Loft Conversion near Greenisland | £23 | £153 |
| Build A Mansard Loft Conversion near Ballynahinch | £19 | £189 |
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 - £16,837

Two storey extension - £87,005

Build a timber frame extension - £25,337

Build a swimming pool - £80,337

Single storey extension - £41,736

Side return extension - £34,039

Install an RSJ - £1,537

Outbuilding - £9,337

Build a Mansard loft conversion - £51,337

Loft conversion - £27,533

Build a kitchen extension - £41,337

Hip to gable loft conversion - £41,337

Granny annexe - £86,337

Garden office - £9,337

Convert a Garage - £15,337

Garage - £17,837

Build a flat roof extension - £21,337

Build a dormer loft conversion - £41,337

Concrete foundations - £5,587

Convert a bungalow loft - £28,337

Convert a basement - £30,039