Pros
The best reason for working at the CoStar Group was the great group of people that I met during my tenure. Everyone was more than happy to help is a question had to be answered. They were great people because they were in the same boat as many others... (Read: not sure of where they wanted to go in life.) There was limited feedback and recognition especially if you were to work on a "project." Besides the people, much of the time was used for working. Many times employees would email each other back and forth if there were rumblings in the office.
Cons
During my entire time there,there were always politics within the office. I was a member of the "employee satisfaction task force." Nothing was ever acted upon if there were suggestions to "improve" life at CoStar. There was a time when we had a meeting in San Diego with Mr. Florence. During the 4-HOUR meeting, someone asked the question about dissatisfaction and all that he could say was, "I know that you are unhappy. I'm sorry." For a company of 15,000+ employees throughout the country, and that is all that the CEO has to say. You have to be kidding me.