Bat houses are fully open on the underside where the bats enter. A bat house is a box with internal staggered partitions at the lower edge to give the bats something to grasp as they go in. This bat house has five chambers since bats like small spaces. Free plans at the link.
Build this simple bat house using the free woodworking plans located at My Outdoor Plans.
It is beneficial to have bats in your area so follow these step-by-step woodworking plans to build your own backyard bat house.
Build a cedar bat house using the free instructions and video available at WoodLogger.
Build a bat box and it will help control the mosquito population. Here are the free instructions with pictures.
This bat house is easy to make in an afternoon. Its shallow construction is designed specifically to attract bats, which like cramped, dark spaces for nesting.
This is a link to a Google 3D SketchUp drawing for a small bat house with four slots for bats. The bottom swings down to allow inspection and cleaning. You will need the SketchUp software to download this drawing and its freely available online.
Build a wooden box sleeve to slide over a 4×4 post that has been notched out using the plans at Bats North West.
At the link you will find basic information for building a bat house from DCCL.