I have a 3 story town house that is about 20 years old now and I noticed the other day that a few of the shingles are missing and some of the other ones are looking loose. I'm guessing this is it's original roof and it's probably about time to have it reshingled. So far there don't appear to be any leaks or anything. If I have to guess, I would estimate that the roof area is probably around 550 sq ft. But that's a total guess as I don't happen to know the grade of the roof or the exact demensions of my house at the moment. I suppose when you take the grade into account it could be more like 800-900 sq ft. But anyway. . .I live in Maryland. Anybody have any idea on how much this kind of project typically costs to hire somebody to do it? This is my first house. I am going to start calling around for estimates but I have no real idea what I should consider reasonable estimates and whom I should tell to go F themselves. Also if you happen to live in Maryland near the washington dc / baltimore metro area and have any recommendations for good roofers you have worked with before, I'd appreciate that too. Or also if you've got advice concerning any roofer I should steer well clear of. . .it's all good.