Before you can move into your unit, the developer must provide an occupancy permit that proves the unit has passed all safety checks and complies with local bylaws. You may receive the occupancy permit and be able to move in before you receive the certificate of title for the unit. This time period is known as interim occupancy and the developer may require you to pay occupancy fees during this time. Talk to your lawyer or real estate agent about how the purchase agreement deals with occupancy fees. Sometimes developers will apply occupancy fees towards the final purchase price of the unit.  Occupancy fees cannot exceed the amount the developer disclosed to you when you signed the purchase agreement.