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Vault Conversions

Converting an under-utilized space can provide valuable living area without upsetting the exteriors of your house. If you are considering shifting to a new home, you might want to rethink your decision. Having a space converted into a place of function will not only add more room to your house, but will also considerably improve the aesthetics of your pad.

Our reliable team of home improvement specialists at DAP construction are pioneers in building, construction and home improvement services and have serviced the folks of Surrey and South West London, since 1985. One of the key services offered at DAP construction is vault conversions. We provide all-inclusive vault conversion services right from the initial consultation phases to adding the finishing touches to the vault.


Vaults have a number of wonderful uses. Furthermore, you will also be presented with an opportunity to experiment with the idea of creating a new space for an office, a gym, a personal library, cellar or a playroom! Unlike a loft conversion that lends itself perfectly for an additional bedroom, vaults have more diverse uses. Waterproofing/Soundproofing the vaults could further mean that you could use the space to make an additional bathroom, a wine cellar, a storage space, a kitchenette or a cinema room.  The choice with what you want to do with it is entirely yours. Depending on your requirements, our team of builders can provide tailored, construction services.

Did You Know?

Vaults or ‘under pavement cellars’ as they are known, were popularly used in a number of Victorian properties in Central London. They were used primarily for the storage of coal.

Is My Property Suitable For A Vault Conversion?

It is essential to assess what kind of property you have first. Once you have done that, ensure that you have gone through the ‘planning policy’ on your basement. Converting an already existing space into an area that is habitable only signifies a ‘change of use’ and may not require prior planning permission. To make your experience a hassle-free one, DAP Construction can oversee all the work pertaining to the planning policy and get your property conversion-ready so that you can go ahead with the vault conversion services.

What Are The Benefits Of Vault Conversions?

  •    Modifications to an unused space that is already a part of the property
  •         A more cost-effective option than moving out of the house
  •         Planning permission is not required for most houses with pre-existing vaults
  •         Extra space
  •         Improves the overall, standard of living

Why Choose Us?

  •         We are the pioneers of building and construction services, with a cumulative 31 years of experience.
  •         We provide comprehensive home improvement solutions
  •         A certified, Chartered Building Company


Vault conversions are priced at £30,000 upwards depending on size of vault to convert.. Depending on the size and the area of the space, vault conversion can take anywhere between 12-24 weeks to complete.

To enquire, please fill out our contact form or call 0208 337 8060