Basement Conversions and Extensions

Basements are becoming more popular for people who need extra space in their buildings for uses such as parking, home offices, utility areas, games rooms, wine cellars, general storage or workshops.  The benefits of having a basement include: energy efficiency,  poor soil areas can benefit from deeper foundations, better land use and additional space where planning conditions are restrictive.

We offer engineering design services for basements, whether for new buildings, refurbishment, lowering floors or extending existing basements, or retrofitting a basement after construction of a house.

Some of the considerations we could discuss with you when contemplating a basement conversion:

  • Is planning permission required for a basement conversion?  A basement conversion is considered permitted development subject to specific conditions which we would review with your particular design.
  • We will asses the structural stability requirements of your idea.
  • Options for installing a stair case.
  • Advice on window options for maximising light.
  • Sound proofing requirements for the new basement space.
  • Ventilation in the basement.  If creating habitable space it is important to ensure sufficient ventilation to ensure a comfortable temperature ambience throughout the year whilst avoiding condensation and the problems associated with that.
  • Fire safety requirements for the basement conversion.
  • Insulation considerations when converting a basement.
  • Lighting of your basement.
  • If you are a leaseholder the landlords consent will well be required.
  • Requirements for a ‘Party wall agreement’ If your home is attached.
  • Assist you in sourcing a quality builder with experience in basement conversions.