Housing supply is tight in most cities across the United States, but that does not mean that every market is a seller's market.

Today's homebuyers are a finicky lot and a mortgage-dependent lot and a confidence-lacking lot; they may want to buy a house, but they're not as willing to be as "house poor" as they might have been in the past. That is why it is more important than ever today, as both a buyer and a seller, to know your market well and know its housing value even better.