The sign must display the individual number/letter of the building and the range of unit numbers within the respective building. It must be easily visible from the vehicular driving areas on the project. There is no required sign size but the letters and/or numbers must be at least four inches high and in a contrasting color compared to the building. The signs should be of weather-resistive material and placed at either the ends or corners of the buildings, as long as they are visible from driving areas. A black background with white, light-reflective letters is easily seen in low-light conditions. If the buildings already have signage noting numbers/letters of the building with the unit numbers and meet the criteria above, they do not need to be replaced.