A red door symbolizes several things including welcome, sanctuary and status. In feng shui, the positive energy of the color red is drawn to the front door, which is considered the mouth of the home. Red also invites good luck and happiness during the Chinese New Year.
A sign of welcome and warmth, a red door is thought to signify the safety of a house along the Underground Railroad, a route for African slaves escaping captivity and traveling north during the 19th century. In Scotland, a red door signifies the status of a paid mortgage. Some Protestant and most Lutheran churches painted church doors red to identify them as part of the Reformation. Albert Einstein painted his front door red so he could find his house.