Basement and foundation – Check for cracks and moisture, and repair if necessary.
Toilet – Check for leaks in water feed, tank bottom, and repair if necessary.
Interior caulking and grout – Inspect caulking and grout around tubs, showers, and sinks; replace if deteriorating.
Water heater – Drain water until clear of sediment; inspect flue assembly (gas heater); check for leaks and corrosion.
Clothes washer – Clean water inlet filters; check hoses and replace if leaking.
Clothes dryer – Vacuum lint from ducts and surrounding areas.
Refrigerator – Clean drain hole and pan (more often in warm weather); wash door gasket; vacuum condenser coils.
Wiring – Check for frayed cords and wires; check exposed wiring in basements, and repair if necessary.
Exhaust fans – Clean grill and fan blades.
Range hood fan – Wash fan blades and housing.
Sink – Check all faucets, hose bibs, and supply valves for leakage.
Bathroom – Check for evidence of leaks around and under sinks, showers, toilets, and tubs.
Breaker box – Trip circuit breakers and ground fault interrupters monthly to insure proper protection.