146   Notice in respect of land or building owned or occupied by more than one person

(1)  If land, including land on which a building is erected, is owned or occupied by more than one person:

(a)  an order in respect of the land or building is not invalid merely because it was not given to all of those owners or occupiers, and

(b)  any of those owners or occupiers may comply with such an order without affecting the liability of the other owners or occupiers to pay for or contribute towards the cost of complying with the order.

(2)  Nothing in this Division affects the right of an owner or occupier to recover from any other person all or any of the expenses incurred by the owner or occupier in complying with such an order.