Boilers and Heating
Ground source heat pump distributor (internal)
Micro-Combined Heat and Power / Biomass
Stairs and Staircases
Unimproved loft space
Building Regulations apply. They cover areas such as fire escape routes, ventilation, ceiling height, damp proofing, electrical wiring and water supplies.
Underpinning and foundation work may also be needed.
You must also consider the Party Wall Act 1996 if other properties adjoin yours and you share walls.
The 'Basements for Dwellings' guidance was removed from the list of approved documents on 1st October 2010. The Basement Information Centre has developed updated guidance on this topic.
Further details can be found on their website
Getting your job done safely.