Take wire screening and form it int a cone.. at the base of the cone cut flaps so you can attach the cone to the area around the hole the bees are using to enter and leave the building. on a ladder or something similar and stable, place a hive with the small end of the cone pointing to the hive entrance. I you have any frames with comb and or brood, but a couple of frames into the hive.
Leave this in place for a couple of weeks. the bees will be able to leave the building but with the cone, they will not be able to get back in. just like a minnow trap.
the bees will adopt the hive and set up housekeeping. after a week, you should place a caged queen in the hive.
you will not be able to get all the bees out of the building. the queen and some of the workers will stay in there.
When you feel that you have all the bees out, remove the cone and plug the hole. just be sure they do not have another entrance somewhere.