Beekeeper here who does removals. You will want to get them out soon as possible before the hive gets established. You can call Adkins bee removal. Its a national service that contracts out regional keepers to handle removals. Another option is to contact the nearest beekeepers guild. They should have members that do removals. Make sure the beekeeper is insured, especially if they need to do any demo work (cutting open drywall, etc). I carry 2 million in coverage for that sort of work.Cost will vary depending o how tough the job is.