Ask a tradesman


Footings for extension above garage

I want extend above my garage how deep do the footings need to be

1 Answer from a MyBuilder Extension Builder

really as deep as the building inspector tells you. The minimum is 450mm from finished ground level to underside of foundation but in most cases it will be up to 2 meters. dig the footings to minimum level or until you hit indisturbed subsoil then ask the building inspector to look he should know the ground conditions for his area


Answered 10th Aug 2017

Post your job to find high quality tradesmen and get free quotes

Can’t find an answer? Ask a new question

Question Categories