Place house outside.Set the house on a fencepost, a tree stump, or another stable location. Look for a place that gets morning sun and shade the rest of the day.
If your log is not too wide around, you can use a plastic clasp to hold it in place against your fence.
Be sure to never spray insecticides near your bee house. If your neighbor uses insecticides, mount your bee house far from their property.
If you need to move your bee house, try to do this after November.