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0113 2109 486

Our Services

We offer a complete solution
for clients looking to convert
an unused basement
or improve an existing failed

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Services we offer

Case studies

Examples of projects
we've recently finished

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Case studies

How's it done?

How to make a great dry
basement conversion?

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How's it done?


We're proud to work with
some of the biggest and
best main contractors
in the UK, on a wide variety
of waterproofing projects.

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"We pride ourselves in great customer service, underpinned by a wealth of specialist knowledge in basement and cellar conversions."


Tel: 0113 2109 486

Fax: 0113 2109 734

Basement Conversions in Harrogate

Welcome to Octopus Building Services. We specialise in cellar & basement conversions in Leeds, Harrogate and the rest of Yorkshire.

We really are number one for basement conversions. Leeds based company Octopus Building Services have been trading for over 7 years and we specialise in the creation of great basement and cellar spaces by using the latest technology and products on the market.

We pride ourselves in great customer service, underpinned by a wealth of specialist knowledge in cellar and basement conversions. Our expertise comes from undertaking numerous conversions across residential and commercial buildings, ranging from 10m2 of space up to 200m2 of space.

The same principles of sound construction and attention to detail is behind every one of our jobs and we're proud to be able to offer numerous customer recommendations - In fact 70% of our work comes from referrals from other customers!

What could your basement space be used for?

Basement conversion for kitchens and Living Rooms Cellar conversions into Bedrooms and home gyms Basement converted into offices and home cinemas Cellars converted into storage space or study cellar converted into a play room or game room basement converted into a workshop or utility room

Does your building have the potential for a great basement conversion?

Basement conversions add value to properties and offer a great solution where more space is needed.

With modern technology and products the days of poor quality cellar conversions are over. We're so confident in our conversions that we offer a 10 year guarantee on every project.

Conversion costs vary by project but cellar conversions are often cheaper per m2 than loft conversions or extensions. They also maintain the original appearance of your house, have less planning permission implications and don't impinge on outside space.

We offer a free no obligation consultation to advise you on what is possible on your project. However here's some important considerations:

  • Access: Existing stairs are great start. They may need upgrading depending on the final use of the cellar.
  • Headroom: Ideally you'll need over two metres of headroom so careful consideration needs to be given to digging the cellar lower if needed.
  • Natural light: Cellars are better with some natural light. We offer standard windows, lightwells and sun tunnels to make your conversion look wonderful.
  • Electrics and plumbing: The construction stage is the perfect time to get these elements right. We offer fully guaranteed plumbing and electric services as needed.
  • Walls: Your cellar may be a series of tiny rooms but often it's possible to make one larger space by removing these walls and supporting the floors above.