Although we love bees, we do understand that some people do not and that bees can be in locations that create a safety concern.
This is a normal part of bee behavior and typically happens in the spring. However, given our Texas weather, they will often swarm at other times of the year too. Swarms are usually easy to identify because it is a "ball" of bees on a tree or spread out on the side of something (car, building) and they were not there yesterday. If the bees are not at a really inconvenient location (i.e. your car and you have to go to work, the front door), letting them move on is the best solution. The bees will typically move on in 24-72 hrs (usually 24, because they need to find a home fast). We don't recommend that you try and capture the swarm, just a safety thing. Also, because they typically move on quickly, we may not be able to locate a member to capture the swarm before they leave.
This is where the best option to "Save the Bees" is preventative. When the bees are looking for a new home, all they need is an entrance that is at least 3/8-inch in diameter (size of a pencil) and is a nice warm cavity (soffits seem to be popular). Sealing up these openings during the winter months or early spring, will minimize the chance a swarm will take up residence in your house/shed. They will also make a home under a floor (crawlspace or space under a shed), so backfilling any openings around the border would be good to do also.
Removing bees from a structure is a big gamble and the chances of saving the bees goes down dramatically based on where the bees are located and other factors. Capturing the queen is key to the hive surviving and this gets difficult when you're cutting into a cavity to access the bees...surprisingly they tend to get excited. Additionally, removal requires the destruction of a portion of the structure large enough to access the bees and comb, which may not be what you want.
The Association itself does not provide this service.
However, the Texas Apiary Inspection Service maintains a list, by county, of Beekeepers that have registered with them to do removals. You can search that list for available Beekeepers in or near your county. These Beekeepers have agreed to not use chemicals, etc. as part of the removal (details on website). Also, they have created a document that has several questions that are good to ask when working with someone to remove bees. We highly recommend that you review this document, regardless of who you get to remove the bees.
Lastly, doing removals (typically doesn't include swarms) is not something that is high on a Beekeeper's To-Do list, as they often are trying to find enough time to take care of their own bees. However, some will take this task on. Keep in mind that bee removal requires gaining access to the bee hive...unfortunately, you can't lure them out. As this does take time away from other tasks, most charge a fee for removals (not usually for swarms, but might depending on the situation) as this is very labor intensive and many times requires equipment not normally needed for keeping bees. As well, the chance of obtaining an intact, viable hive is about 50/50, as there are many factors that can keep the hive from surviving (they are tough, but do have a sensitive side).