Wow! Thanks for all the responses. Abhishek: on the whole, Ann Arbor has been great. Our house is right downtown, within walking distance to town and campus so we never had trouble finding good tenants. Had a mix of medical residents (best tenants ever) and grad students (also OK). But we are now realizing how out of step with the market we've been renting it for. Could have priced it higher, but opted for keeping the peace and holding on to responsible tenants.
Thanks to those who mentioned the 101 Exchange. We've been trying to learn about this option. My son (a budding RE investor who encouraged me to join this site) has been pushing for us to explore this option. My understanding, tho, is that we would have to reinvest the profit in a property that costs the same as we sell for. Is this accurate?
Rookies that we are, when we first heard about the 1031, we thought we'd be able to take the profit from the sale (say $100K, just for argument) and then buy a house outright here in Nashville for $100K and be off to the races. But, as you all know, it's not that simple. As I understand it now, if we sell our Ann Arbor house for, say, $400K, then any Nashville house we buy would have to be $400K (putting the $100K down and getting a mortgage.)
Big question: could we do the Exchange and instead buy TWO $200K houses? FOUR $100K houses? So complicated.
I keep thinking it might just be best to pay the tax and be done with it. Sigh.