Because the sales contract will more likely than not, fall apart for a million reasons these days!
Many buyers put the cart in front of the horse, They'll pull an Online Worthless credit score over 700, tell a trusting realtor they've been pre-approved, then after 6 weeks and 30 properties will finally sign a contract and then decide to actually put forth the effort to find a loan for their situation.
But soon after will find it's no longer 2005, their over 700 score is actually a 647 Mortgage Credit Score and they actually need a job to get a loan!
Sounds like I'm joking? I'm sure all the realtors on this site could tell you stories that would blow your mind about what all we've all seen over these past few years!
If I was that seller, I'd want my property to stay on the MLS until 2 days after the property actually closed and I'd be taking Back-Up offers the whole time too!
REALTORS have limited control over a lot of the sites you may be searching for listings on. I would highly recommend you find a Realtor to use, then you can use a link they provide you from their web site. REALTORS have access up to date info you can search through that are more or less directly attached to the system we use. This would give you the most reliable information.
You could also set it up with your REALTOR to set you up on a email list, sent to you every night with homes that match your home searching wants & needs.
If it helps, you can try this..... http://www.KieferRealtyPA.com ... on the left side of the page click on the link to the MLS area you wish to search.
Sorry to hear you are having a problem.
The Listing is tied to a MLS number, when it is still Pending it can be shown
and if an offer falls through a new offer can be accepted.
Lets say the offer Is " Pending Release Clause" which means a buyer who had an accepted offer
has home to sell. In California, a Buyer can make an offer and win the bid.
When the home sells, and sold it is a different issue.