House numbers The best way to insure speedy delivery is to display your house number clearly. Believe it or not, a majority are not visible from the street. It's even worse at night. A badly displayed number can cost you ten minutes. This also hinders the police, ambulance, and fire department in the event of an emergency. This is important. Please follow the guidelines below. They were written after many years of experience in delivering to thousands of houses. The best location The best color The best size Ordinary address number mistakes Recommended house numbers Last updated: August 9, 2008