A permit is not required for: Ordinary repairs which do not involve any violations of the building code. These include painting, roofing, most glass, most doors, floor covering and porch flooring, repairs to plaster or interior tile and other wall covering, residential cabinets, and wiring and equipment operating under 50 volts. Detached accessory structures less than 256 sq. ft. NOTE: must be structurally sound and anchored. Zoning permit is still required. Tents or air supported structure less than 900 sq. ft. and less than 50 persons. Fences and privacy walls (does not include retaining walls) that do not exceed six feet above finished grade. Swimming pools meeting all three of the following conditions: less than 200 sq. ft., less than 5,000 gallons capacity and less than 24" deep. Pools that fail to meet any one of these conditions require a permit. Re-roofing of 1 and 2 family dwellings (roof covering only). Most wiring and equipment that operates at less than 50 volts. (exceptions) Replacement of plumbing and electrical fixtures, fittings, appliances, including electric water heaters, fans, humidifiers, dehumidifiers, air cleaners, and similar mechanical equipment, doors and windows with that of similar capacity in the same location in most residential uses.