Add extra space to your Crystal Palace home from £41,984

Dormer loft conversions are ideal if you want to add lots of extra space to your home. Adding a box-like structure or structures to the roof, you essentially extend the roofline to add significant square footage to your loft space. This makes dormer loft conversions one of the most popular loft conversion types, as they're ideal for adding a new main bedroom with en-suite or even a self-contained living space. To see prices and availability for your job click green button.

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From £42,048

Rates verified Sep 26
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J&J Building Solutions

Experienced extension builder ready to quote for your work. J&J Building Solutions is the best extension builder in Crystal Palace. No obligation f...

From £43,200

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Banga Decoration

Sebastian Banga

Member since August 2025

Banga decoration. Is Base in south London  for number of year  Banga decoration is a small  company. Wich provide an excellent job to the custom...

From £43,024

Last active Nov 26
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Buci builders ltd

Robert Buci

Buci builders ltd is a trusted extension builder serving customers in Crystal Palace and the surrounding area. Contact us to today to get a competi...

From £42,144

Last active Nov 26
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Greens Gardening & Landscape Property Maintenance

John Mcdonagh

Watch our short video highlighting all our expertise and services here:

more than 10 y...

From £41,984

Last active Oct 26

2 reviews

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RCB Group Design & Build

Vasi J

No Call out charges! 

All Jobs Fully Insured and Guaranteed !!!

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"I am very pleased with the work carried out. All very clear and transparent." - ROMFORD,reviewed 10/01/18, KELLY

From £42,040

Last active Oct 26
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PW Construction & Renovation Ltd

PW Construction & Renovation Ltd is a trusted extension builder serving customers in Crystal Palace and the surrounding area. Contact us to today t...

From £42,056

Last active Oct 26
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The Perfectionist

Experienced extension builder ready to quote for your work. The Perfectionist is the best extension builder in Crystal Palace. No obligation free q...

From £42,344

Last active Oct 26
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Glenn Miller Builders Limited

Glenn Miller

Relax... you have found a reliable extension builder in Crystal Palace. Glenn Miller Builders Limited is a friendly and reliable company based in C...

From £42,336

Last active Sep 26
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PRM BUILDING

Relax... you have found a reliable extension builder in Crystal Palace. PRM BUILDING is a friendly and reliable company based in Crystal Palace who...

From £42,320

Last active Sep 26
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QSA Builders Ltd

QSA Builders Ltd are here to help customers who need an Extension Builder in Crystal Palace. We offer a competitive rate to complete all your exten...

Cost of dormer loft conversions in Crystal Palace

Estimates for build a dormer loft conversion near Crystal Palace

In Crystal Palace, prices for dormer loft conversions range from £41,984 (RCB Group Design & Build based in SE21) to £43,200 (Banga Decoration based in CR7), but how much your conversion costs will vary depending on the size of your property, how easy access to your roof is and what you want to use the space for. 

The best way to get an accurate price is to compare quotes from extension builders in Crystal Palace. Post your job on HaMuch now and we'll put you in touch with available extension builders.

"Build a dormer loft conversion" - BR3, job posted 01/01/70


Estimates for common extension builder jobs in Crystal Palace;

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...