Building Regulation approval is requisite irrespective of whether planning regulation maybe applicable for your conversion.
We have created an information guide about regulations for your roof extension or basement construction.
We are members of the NHBC for over 2 decades and are well versed with regulations and implementation. All our new build work carries a 10 year NHBC Guarantee. So let us know if we can be of assistance!



Roof Extensions

Sufficient structural strength of the new floor

In most properties, the initial timber joists that form the floor of the loft space will not have been designed to support a heavy load, the existing space would have been made just for storage. An excessive additional load may mean that the joists are loaded beyond their design capacity.

Stability of the structure is not impacted

Considering the structural stability of the existing walls when undertaking a loft conversion is paramount. It is important to take into account how the new load will be supported. For example, if new floor joists are provided and they are supported by an existing wall, that wall will need to continue way down through the house to a foundation, or alternatively the wall will need to be provided with adequate intermediate support.

Fire Safety and Escape routes

Converting existing roof space into a full living space it is necessary to consider how one may escape from a fire, and usually requires that additional fire protection be installed in various existing parts of the house.

Stair Safety to the new floor

Cutting away some of the existing ceiling joist between the existing rooms of the homes and the loft-space may be necessary. These joints support the existing ceiling and restrain the pitched room from spreading, therefore replacement support should be implemented.

Reasonable Sound Insulation

There are standard Sound insulation requirements between the loft living space and the below rooms


Building regulations for basements cover aspects such as:

  • Ventilation
  • Ceiling height
  • Damp proofing
  • Electrical wiring
  • Water supplies
  • Fire escape routes

Underpinning and foundation work may also be required. In addition, the Party Wall Act 1996 may be applicable if other properties adjoin yours and have shared walls.
There are approved government documents under the ‘basements for dwellings’ guidance, however they are no longer available since October 2010. In place of this, We have a comprehensive Basement Building Regulations guide which is available upon request.
Contact us and we’ll be happy to oblige!

Contact us and we’ll be happy to oblige!


Free, No Obligation, No Hassle