i) The refurbishment was begun while Johnson was mayor.
ii) As far as I'm aware, it doesn't fall within Khan's remit.
The Building Regulations 2010 cover that.
London had its own Building Act under the Labour-controlled GLC but that came to an end in 1986 when Thatcher abolished the GLC. The abolished London Building Act was more stringent in terms of fire regulations than the national regulations which replaced it, according to Ronnie King, who is the secretary of the Parliamentary Fire Safety and Rescue Group and served as Chief Fire Officer for 20 years in Wales.
Left in the US does not mean left in Europe. The Democrats are "light touch regulation" merchants too.
If California has such unimpeachable building standards and regulations, why have 800 balconies been found to be dangerous and in need of repair?
Call me crazy, but I'd rather not take a walk onto a balcony made of a wooden beam, especially in rainy and foggy San Francisco.