One of the challenges of bat house installation, is that they should be mounted a minimum of 12 feet off the ground with 15 to 20 feet being ideal. Given the large size of bat houses, it can certainly be challenging to safely mount them high enough.
We were excited to read that this Tree Works company in Asheville, North Carolina helps mount bat houses.
Some sources advise against mounting bat houses directly on trees. Community Bat Programs of BC advises that you should de-limb around a bat house if you mount it on a tree so that any bats using the house have a clear path in and out of the house and better protection from predators.
We do like that there are companies out there thinking about how they can help with bat house installation.