Build a mansard loft conversion in Washington from £51,040

Mansard loft conversions are ideal if you want to maximise the space in your home. Extending your roof out into a flat roof with an almost vertical wall, they almost always require planning permission but can add significant value to your home. To see prices and availability for your job click green button.

HaMuch is Excellent

How HaMuch saves you money

Post your job for free

Post your job for free

We send your job to ALL Washington extension builders

Compare quotes

Compare quotes

Available extension builders in Washington reply

Save Money

Save Money

Select your affordable Washington extension builder

Post your job

From £52,912

Last active Nov 26
Get quotes

Radici Construction North East Ltd

Albert Radici

Trusted General Builders in Durham From small fixes to full renovations, Radici Construction delivers quality workmanship, clear communication,...

From £51,040

Get quotes

OCC Construction

Oscar Carballo

Member since July 2020

I have over 40 years experience in the field of construction. Thank you and I hope I will be of service to you.

From £51,984

Last active Oct 26
Get quotes

L T Builders

L T Builders is a trusted extension builder serving customers in Washington and the surrounding area. Contact us to today to get a competitive quot...

From £52,008

Last active Oct 26
Get quotes

TK Builders

Need to find an Extension Builder near you for all your extension buildering work?

TK Builders provides a local, trusted extension builderi...

From £51,848

Last active Oct 26
Get quotes

MM Building Services

MM Building Services is an established and experienced local extension builder in Washington. Please contact us for a free, no obligation quote and...

From £52,104

Last active Oct 26
Get quotes

RAINTON CONSTRUCTION LTD

RAINTON CONSTRUCTION LTD is an established and experienced local extension builder in Washington. Please contact us for a free, no obligation quote...

From £51,992

Last active Sep 26
Get quotes

L & H Cleaning Ltd

Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

From £51,936

Last active Sep 26
Get quotes

Building Craft Ltd

Building Craft Ltd is an established extension buildering business in Washington. We come highly recommended and provide competitive quotes for you...

From £51,984

Last active Sep 26
Get quotes

COUSINS BUILDG & RFING SRV LTD

Ian

Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

From £51,936

Last active Sep 26
Get quotes

D H P Builders

D H P Builders is an established extension buildering business in Washington. We come highly recommended and provide competitive quotes for your wo...

Mansard loft conversion cost in Washington

Estimates for build a mansard loft conversion near Washington

Mansard loft conversions range from the cheapest installation of £51,040 (OCC Construction based in NE10) to the dearest of around £52,912 (Radici Construction North East Ltd based in DH1).

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 Washington by posting a job with HaMuch and we'll send it to extension builders in Washington. 


Estimates for common extension builder jobs in Washington;

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.

More extensions & conversions cost guides...