what is the name of the house on back of a penny

The back of the penny shows a monument, not a house. Check here to see which monument it is.

http://www.enchantedlearning.com/math/money/coins/penny/

The house on the back of a penny is known as the Lincoln Memorial. It is a monument located in Washington D.C., dedicated to President Abraham Lincoln. The Lincoln Memorial depicts a seated statue of President Lincoln surrounded by columns. To find the name of the house on the back of a penny, you can examine the design of the coin and any accompanying text or symbols. Additionally, you can use online resources or consult numismatic references that provide information about coin designs.