Don't overload extension cords by plugging in appliances that draw a total of more watts than the rating of the cord. Use special, heavy duty extension cords for high wattage appliances such as air conditioners, portable electric heaters, and freezers. When using outdoor tools and appliances, use only extension cords labeled for outdoor use.
Sellers will sometimes opt to remain in the house after closing via a short-term rental agreement. As the new owner, be sure the purchase contract and rental agreement stipulates that the sellers repair any damage they cause after the closing date.