Mansard Loft Conversions in South London & Surrey

LMB are London’s loft conversion specialists, producing the highest quality mansard loft conversions throughout the South London and Surrey regions that add space and value to your home.


  • Free survey and written quotation
  • Full deposit protection guarantee
  • Professional expert advice given
  • Qualified and approved staff
  • 10 year insurance-backed guarantee
  • Fully-staffed office Monday – Friday

Mansard Loft Conversions for South London & Surrey

Expand your loft and create the headroom you need with one of our amazing mansard loft conversions. Mansard conversions extend on the sloping part of your roof and raise the walls, so they’re almost vertical and this increases the angle of the roof.

So if you’re looking to add more space to your loft conversion with a simple outwards extension, count on our team of experts to build you the room of your dreams.

We provide our work to all customers, for both commercial and domestic alike and we provide free surveys and written quotations. When you choose to come to us, we offer full deposit protection and 10-year insurance-backed guarantee, so you can have confidence in our experts to provide you with exceptional service.

With over 30 years in the industry, you can guarantee that LMB Group Ltd will provide you with first-rate service and be there to communicate the stages with you every step of the way.

If you’re located in South London, Surrey or nearby areas, and you’re looking for an established company that has experience with mansard loft conversions, talk to our highly trained experts today. Whether you’re looking for advice or wish to book our services, we’re happy to help.

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It was so wonderfully done; the attention to detail.
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Great team of guys, we had a really good relationship with them. They were very clean and they arrived bang on 8 am every morning.
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Great service. Very quick and very thorough in what they do. They kept me updated with everything they were going to do.
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It was so wonderfully done; the attention to detail.
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Because of the quality of work I’ve had done, I have already recommended and would recommend to other people to use LMB.
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Really nice, genuine people… The general package was really appealing.
Valley Road
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It’s like a new house! We have an absolutely much larger space, each child has their own area to play in, and papa and mama still hide out and work!