Re-wiring

Do I need body corporate permission to rewire a ground floor apartment? The existing wiring is on its last legs and can no longer be repaired. The lights will be rewired through the existing conduits in the walls and ceiling, but the electrician intends to rewire the power points from under the floorboards, meaning he will run wires along the joists in the underfloor area, which I guess is common property.

Part of the underfloor area is taken up by the communal laundry, the rest is a makeshift storage area where people have left old furniture and stuff over the years.

The Telstra cabling is already strung under the floor, for what it's worth.