but who maintain them?

I tot arkitek suppose to know the technical details and feasibility?
Cause my flat there, got neibor komplen water leaking from my unit. He is downstairs.
He said he is arkitek. Konlanfirm is my unit problem. Ask to pay for damage

Those who talk cock knew very little on how construction works. For info, whenever there is a development, there is major destruction of the environment that most couldn't see or even bother to do so.

Know how to destroy environment then compensate a bit lor.... Its for the future. Else when all your surroundings like are all processed wood, zincs or concrete structure only.

No, at least much more knowledgeable.

But I no do reno wor. Really the law ah? Which law?