Electrical problem in my flat due to water damage

[flameproof]

If you consider DIY, google for 'Wall Chaser' - that will make your job MUCH easier.

[shri]

HIGHLY recommend what LifeInHK said . Eventually, your water problem will cause problems for the flat below ... at which point your management will get involved AND your bills will be higher.

Seriously, talk to them and find a plumber who is familiar with your building / apartment / management.

[TimUK]

Ah yes find a buyer for a place with a major water leak and electrical issue

Don't mention it