I've recently moved into a 30s semi - typical suburban 3 bed that has been extended upwards. I have no idea when it was last rewired, but one of the sockets looks pretty antique, and the lights seem to fuse a fair bit. Also, I've noticed blue sparks coming out of the sockets when I remove plugs.
How urgent is this? And how much should I expect to repay for rewiring? I'm pretty broke, but don't want to burn in our beds. Also, what damage is left by rewiring: will I need to replaster and repaint?
Many thanks!