Realistic Expectations: If you are putting a property on the market, establish a timeline that is realistic for a sale. When you are checking out comps, also note how long it took those comps to sell so that you can plan for a similar (or longer, in a worst-case scenario or if you plan to price high) timeline for your own property. Average time-on-the-market values are not as good for this because they do not necessarily apply to every deal.