Unlined brick chimneys which are badly deteriorated by natural gas exhaust. Carbon Monoxide danger. Panel boxes and circuits not labeled No or faulty Ground Fault Circuit Interrupters in bathrooms and kitchens. Uncovered electrical junction boxes. Missing outlet and switch covers.
Improper wire splices.
Not in junction boxes. Permanently wired extension type cord. Damaged or deteriorating insulation. Illegal wiring methods. Fluorescent lights improperly wired in T-bar ceilings.