Not all bat houses are built properly. Short stout houses tend to have little chance of attracting bats, where longer, wider houses are working quite well. Notice below how tall and wide this design is. How to put up a bat house in Northeastern United States Where you mount your bat house plays a major role in the internal temperature. Houses can be mounted on such structures as poles, sides of buildings and tall trees without obstructions.
Houses placed on poles and structures tend to become occupied quicker than houses placed on trees.
Bat houses should face south to southeast to take advantage of the morning sun. In northern states and Canada, bat houses need to receive at least 6 to 8 hours of direct sunlight. Use non-toxic, latex paint to paint your bat house and only paint the outside. Your bat house should be mounted at least 15 feet above the ground, the higher the house the greater the chance of attracting bats. They will be abundant through out the summer and into late fall.