Bees nesting in locations inconvenient to humans are considered pests. Likewise, few people want a bee colony nesting in their house or another structure on their property. Some beekeepers earn extra income in removal of unwanted bee colonies though many states label this as pest control which is strictly regulated and often requires training, license, insurance, etc. Honey bees in a swarm are usually gentle because they have full honey stomachs. If left undisturbed, a swarm will locate new quarters and often disappear as quickly as they appeared.
Local beekeepers collect swarms to put into their unused hives.
They seldom demand a fee for their effort since the bees from the swarm will grow when captured in a hive and usually produce honey the next season. Beekeepers leave their names and phone numbers with local county Extension agents or local police. Some bee associations produce lists of members who are interested in swarm capture. It is not always possible to locate a beekeeper or practical for the beekeeper to capture a swarm. In only unusual situations will a swarm remain to build comb and not move from a cluster site.