Parking requirements as specified in Sections 17.100.010 through 17.100.160. For each newly constructed single-family residence, two covered parking spaces in a carport or garage. Each space shall be a minimum of 10 feet in width and 20 feet in depth of unobstructed area. Washing machines, dryers, water heaters, stairways, supporting columns, steps or other obstructions shall not be located within the required parking space.