The Harris County Beekeepers Association maintains a list of association members available to retrieve honeybee swarms or honeybee removals.
There are two type of unwanted bees. In beekeeper's terminology: Swarm Collection and Hive Removal. A swarm is a group of bees that recently left another hive that are "hanging out" in a big group or ball looking for a new home. If there is honey comb or the bees are going in or out of a hole then it is a REMOVAL. When it gets hot, the bees will hang out around the opening to cool off. Removal generally costs money.
A proper removal will remove the bees and all the comb / hive associated with the bees. If all the comb is not removed, it creates a major pest problem. Without the bees to protect the comb, it becomes a feeding ground for rats, mice, hive beetles, and wax moths. These beekeepers are also interested in saving the bees and do not use any chemicals to kill the bees.
If a honeybee swarm has moved inside a structure, such as a home or garage, there are beekeepers who can safely remove those bees. The State of Texas requires an annual permit to remove bees from a commercial building or inhabited structure. Swarm collections do not require a permit. Depending on distance traveled and location of bees some beekeepers may charge a fee. Removals from a structure takes time, special equipment and tools. Most beekeepers with a State Permit who do removals will charge money. As with any specialty service, costs can vary a lot depending on difficulty and the person. A beekeeper also needs permission from the property owner. So if you have a problem with bees on a neighbor's property, there is nothing a beekeeper can do without the owner's permission and the owner's understanding that repairs will need to be made after the bees are removed.
For additional information and permitted swarm removal beekeepers, look under the " Bee Removal Call List ".