Accessible Entrance Signs should be placed right at the entrance of a facility so that the entrance is well identified. If wheelchair access is present at the side or back of a building, a building access sign should be placed at the front stating this. If there’s an access ramp to enter the building, mount an Access Ramp sign near it.  ADA also clearly mentions that “Where a directional sign is required, it should be located to minimize backtracking. In some cases, this could mean locating a sign at the beginning of a route, not just at the inaccessible entrances to a building.” Hence, you can start installing directional entrance signs from the street, beginning of the lawn, or the main gate of your property. For indoor signs, ADA requires specific mounting height for signs. The lowest characters on the signs shall be located at least 48 inches above the ground and highest characters on the signs shall be located not more than 60 inches (1525 mm) above the ground.