From £52,176
Trusted and professional extension builder in BN25. Experienced in all extension buildering work and keeping within budget and on quote. J L BUILDI...
From £52,288
Oliver Relton
Here at Complete Property Solutions, we have a small dedicated team of professional, conscientious tradesman with the knowledge and experience to e...
From £51,808
The Place Between offers home design and project management services. We work with a network of building professionals. We believe that the transit...
From £52,064
At Prestige we pride ourselves on delivering bespoke projects including Heritage and specialist works.

Mansard loft conversions range from the cheapest installation of £51,808 (The Place Between based in BN25) to the dearest of around £52,288 (Complete Property Solutions (Sussex) Limited based in BN9).
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 BN25 by posting a job with HaMuch and we'll send it to extension builders in BN25.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Mansard Loft Conversion near Seaford | £34 | £243 |
| Build A Mansard Loft Conversion near Eastbourne | £32 | £245 |
| Build A Mansard Loft Conversion near Hailsham | £31 | £243 |
| Build A Mansard Loft Conversion near Brighton and Hove | £35 | £251 |
| Build A Mansard Loft Conversion near Brighton | £35 | £251 |
| Build A Mansard Loft Conversion near Wealden | £35 | £256 |
| Build A Mansard Loft Conversion near Burgess Hill | £36 | £240 |
| Build A Mansard Loft Conversion near Shoreham-by-Sea | £36 | £250 |
| Build A Mansard Loft Conversion near Bexhill-on-Sea | £31 | £243 |
| Build A Mansard Loft Conversion near Haywards Heath | £35 | £256 |
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 - £17,584

Two storey extension - £88,126

Build a timber frame extension - £26,084

Build a swimming pool - £81,084

Single storey extension - £56,680

Side return extension - £42,445

Install an RSJ - £2,284

Outbuilding - £10,084

Build a Mansard loft conversion - £52,084

Loft conversion - £34,538

Build a kitchen extension - £42,084

Hip to gable loft conversion - £42,084

Granny annexe - £87,084

Garden office - £10,084

Convert a Garage - £16,084

Garage - £18,584

Build a flat roof extension - £22,084

Build a dormer loft conversion - £42,084

Concrete foundations - £6,334

Convert a bungalow loft - £29,084

Convert a basement - £38,445