Honeybees don't build a "nest" as such. They use a hollow cavity to stretch honeycomb across. Common places you find them are in hollow trees, chimneys, and walls of houses or buildings.
Honeybees are also the only bees that technically swarm. Swarming occurs when the colony is over-crowded. The queen raises another queen to take over the colony and then she leaves with ten thousand or more bees to start another (this is a very brief and loose description of what happens, but we think it will give you the basic idea). While looking for another place to build the swarm will land on a branch of a tree, bush, or something similar, clump up on top of each other, and then send out scout bees to look for a hollow cavity to move into. When honeybees are swarming they are very gentle, until you start messing with them (e.g. kids with a hose). Once angered they can be extremely dangerous and even deadly. They should be left for a professional to deal with. If you have a swarm of honeybees give us a call and we'll try to put you in touch with a beekeeper that can come out, put the bees in a hive box, and take them away alive (usually for free).
Unfortunately, once honeybees have moved into a wall of a house, about the only thing to do is exterminate them. The beekeepers that we know don't find it economically viable to remove them from such a place. The likelihood of getting the queen out of there alive is questionable, not to mention the expense of tearing a wall apart and rebuilding it.
All our work is guaranteed for one year with the exception of our work with wasps. Our wasp control is guaranteed for three months.
If you're having a bee emergency, call us as soon as possible!