2. Questioning the First Offer

Too many sellers reject their first offer, even if it's close to or at full asking price. Holding out for more money is a strategy that rarely works, especially at a time when credit is tight, lending requirements for mortgages are in flux and potential buyers have less purchasing power. (Read our story here for more advice on selling in a cooling market.)

The reality is that in any market a home's first offer is often its best, says Elaine Clayman, a real estate broker with Brown Harris Stevens. Typically, educated buyers will seize on a property they like -- with a competitive bid -- as soon as it comes onto the market, she says. Of course, given the glut of houses on the market, sellers should expect to receive some low-ball offers. Just don't assume that you'll get better bids the longer you hold out. As Clayman warns, the more time a home sits unsold, the greater chance a seller will have to reduce his price.