Can beards be housed in the same enclosure?

Can they?

yes they can but its frowned upon because they are EXTREMELY territorial so a male and female the male will dominate her and female and female one of the females will be dominant.
you can house them together just try to watch them to make sure one isn't getting hurt or bullied!

i know plenty who house two together

I wouldnt recommend it, but if you are going to house multiple beardies. I would do females only. Males and females won't stop breeding, which is bad for the female. Only males would cause fighting. If you choose to house them together, make sure the enclosure is big enough for them to have their own space, have at least 2 basking spots. Lastly makes sure they are just about the same size. I had 2 females once, and the larger one would bite the head of the smaller one and drag her around the enclouse.

Beardies are territorial. You'll need a big enough tank where they can both have their own cool spots and their own basking spots. They'll probably need to be on opposite ends of the tank for feeding so feeding live crickets in the tank would be very difficult. Two males will fight. We had a long talk with a beardie breeder that said two males together especially brothers, will fight all day long, as will brother-sister pairings. Basically all siblings will fight like crazy. Male-female will breed constantly like dc5 said. The female will suffer because of this. Female-female will fight less but there will probably be tension. And again as dc5 said, they need to be the same size.

Also make sure they are the same size...if not there is a chance the bigger one will eat the little one. With Beardies if it moves...its edible!! Also be sure that one is not getting the short end of the stick on feeding, basking, and cool spot.

I will take everything into consideration. I dont know if I am going to get one immediatly or if I ever will, I'm just getting the idea of everything. There are a few animals that I am interested in getting next, a GTP, ETB, a couple Beardies, BRB, or some Cresteds. I like to keep my options open as you can see. I am leaning more towards a BRB, GTP, or ETB. I guess we'll see though. Thanks yall.

When I use to breed I had three females in the same enclosure and never had any issues, but I also had them in a 125 gal tank. I also made sure they had food at all times. I had my girls for 5 years that way and never once had an issue, but I was probably the exception. I also had multiple things for them to climb on and also multiple hot spots. I say as long as you are careful and keep an eye on them you should be fine, but you always run the risk of something happening.