Building regulations make sure that any new builds or renovations are fit for purpose, and safe for those using them. This includes energy efficiency provision, drainage and damp concerns, and also fire regulations.
Not all home renovation or extension projects require building regulations approval, but it’s a good idea to engage the services of an expert when checking on the requirements in Ealing. If your works include structural alterations, involving load-bearing walls, chimneys, or walls surrounding staircases, they will need to be signed off by a competent authority. Like for like repairs, including most window replacements, will not.