That monthly condo fee you mentioned covers lawncare, snow removal, garbage removal, and ammenities like tennis courts, meeting center usage, swimming pools, and onsite gyms. Sometimes for far less than one would pay as a homeowner purchasing each of those services himself/herself for a traditional home. Lots of singles and busy professionals dig condo-style living.
~ Blue Jays ~
I've got nothing against condo living, per se. When my wife and I were first married our first home together was a rented condo that I really loved. But that was in Virginia Beach which is a wonderful place to live, not DC (where I also lived for 4 years) which is a crime ridden, poorly serviced, dysfunctional hell hole.