Cost for plastering after a rewire? I'm buying a one-bed flat and getting it totally rewired; the electricians...

I'm buying a one-bed flat and getting it totally rewired; the electricians will have to punch through the ceiling to repeat the lights etc as there's no access from above. I'll have to bring back a plasterer in to fix it adjectives up afterwards. Any ballpark figures on how much this might cost?
I'm told pictures should be hung surrounded by...
Answers:    No one could narrate you that without seeing how big/ how plentiful holes. On the bright side, the electrician will cost a lot more than the plaster repairs.