+2 on Holding Costs. Some of us do not know what those expenses are (we were quite surprised last time) but it's important to factor that into the "when to sell" equation. A big issue to insurance companies (every one I have heard of) is that someone must "live" in the house at least X number of days in Y months (or whatever.) Before mom's house sold, I would sleep in the house once each 30 days to validate the insurance. It wasn't ready to sell anyway, but that way, we were covered.
Ko'olau's rules for a quick house sale:
1) Price it right. Actually better to "under price" than over price as a house sitting is a losing proposition. Once you have to drop the price, EVERYONE knows and figure you will drop it some more (see "Holding Costs" above as well.)
2) The house MUST BE in MOVE-IN-READY condition. There should not be one blade of grass out of place, not one frayed curtain, not a single drop of oil in the drive or garage, not a dirty window, no old toilet seats, no rust stains, no carpet stains, no water stains, no musty smell, etc., etc., etc. Do not "store" ANY of your "STUFF" in the house. Store it off-site if you must but get it out unless it is part of your staging theme.
3) "Stage" the house. No one has imagination anymore. Show what the house "should" look like, but do NOT over do it. Have a bed and a chest and chair in the bedrooms, a table/chairs and a lamp in the dinging room, a couple of easy chairs and a coffee table and a lamp or two in the living room, patio furniture (if seasonal) on the patio, etc. etc. Make it look like a show home and it will sell like one. Staging "props" do not need to be expensive - just make certain they look expensive, fit the staging "theme", are reasonably "conservative." Be ready to let the new owner "buy" all the stuff as-is (don't use your grandmother's antique rocker in your staging - go to resale shops or use your own stuff you will be glad to part with.)
Using this set of guidelines, we've sold (i.e., gotten offer, and ultimately escrowed) in no more than 4 days in a typical market and less than a month at Christmas of '81 - anyone recall the housing market of '81/'82?
As always, YMMV, so good luck!