External ready-made & 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, 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 can be matched and built into the walls and facade of a building, for instance the Habibat 001 bat boxes shown below. They have the advantage of offering a secure, permanent space for bats with little maintenance and potentially better thermal properties.