Pros
Good benefits and somewhat decent pay. Nice building to work in. For those out of school there are a lot of young employees.
Cons
Where do I begin? There is no way to simply describe the cons of working at CoStar unless you have already been through hell. Imagine you are trying to climb a muddy, steep hill, in the pouring rain carrying ten dishes spinning on sticks... If one of those plates fall you are doing an awful job, if two fall you are on an action plan and when you make it up the hill and someone bumps into you knocking another one of those spinning plates off its stick you are fired. If you are able to lie, enter in false information to the database, and BS you're way through the day you might succeed at keeping those plates intact. If that doesn't paint a clear picture the job is basically a mix of telemarketing and seeming like a debt collector to whoever you call. The company is all about quantity over quality even as they say they are trying to change for the better.