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Today, theWashington Post came out with its Post 200 list, a ranking of the largest companies and organizations headquartered in the region. Not surprisingly quite a few real estate groups make the list. Here they are, organized from least revenue to most:

First Potomac Realty Trust:  $124.3 million  Washington Real Estate Investment Trust:  $282.3 million  Kettler:  $497.0 million  Federal Realty Investment Trust:  $520.5 million Corporate Office Properties Trust:  $588.0 million Long & Foster: $767.0 million Donohoe Cos.: $790.5 million AvalonBay Communities: $854.2 million Hitt Contracting: $913.0 million B.F. Saul Co.: $1.4 billion NVR Inc.: $3.7 billion Clark Enterprises: $4.8 billion