External ready-made bat boxes & Integrated bat boxes
External ready-made bat boxes
There are a number of ready-made external bat boxes suitable for buildings and trees that can be purchased. These boxes can be wooden as shown above, however there are an increasing number of more durable options, such as Greenwood's Ecohabitats ecostyrocrete bat box shown below.
Integrated bat boxes
Integrated bat boxes are boxes that can be built into the walls and facade of a building, such as the Habibat 001 bat boxes below from Ecosurv. They have the advantage of offering a permanent space for bats with little maintenance and potentially better thermal properties.