It is sort of like being at a red light when it turns green. Although all the cars see the light change at the same time, the guy at the back of the line doesn’t begin moving until all the cars ahead of him have started.

As a result, it has become customary to allow the seller up to a maximum of three days to turn over actual possession and keys to the home. When transfer of possession actually occurs should be clearly laid out in your offer to prevent confusion later.

For example, if you are renting and need to give the landlord notice that you are moving out, you may want to allow a little flexibility. Otherwise, if your purchase closes a few days late you could find yourself staying in a motel with your belongings packed in a moving van somewhere while you pay storage costs.

There are also times when closing can be delayed by weeks, through no fault of your own. Have back-up plans prepared for such a contingency.

One recommendation is to make sure your deposit is less than two to three percent (depending on your location) of your offered price. The reason for this is that if your deposit is larger than that, the lender will pay particular attention to how you came up with the funds. You might have to provide a copy of a canceled check along with a bank statement showing you had the money to begin with. Normally, this is not a problem, but if you have a short escrow period or are barely coming up with your down payment, it could pose an inconvenience.

Another reason to limit your deposit is "just in case." Although significant problems are the exception and not the rule, they do occur. "Just in case" there is a nasty or prolonged dispute between you and the seller, the less money you have tied up in a deposit, the fewer funds you have placed at risk.

As with practically everything in real estate, there are exceptions to this rule, too. During a hot market there may be multiple offers on the property that interests you. A large deposit may impress a seller enough so they will accept your offer instead of someone else’s, even when your unknown competitor is offering the same price or slightly higher.

Since large deposits do impress sellers, you may also find that by making a large deposit you can convince the seller to accept a lower offer. More money up front may save you money later.

There are also times when closing can be delayed by weeks, through no fault of your own. Have back-up plans prepared for such a contingency.

For example, some "move-up" buyers often agree to purchase a home before selling their previous home. Even if the home is already sold, it is probably a "pending sale" and has not closed. Therefore, you should make closing your own sale a condition of your offer. If you do not include this as a contingency, you may find yourself making two mortgage payments instead of one.

There are other common contingencies you should include in your offer. Since you probably need a mortgage to buy the home, a condition of your offer should be that you successfully obtain suitable financing. Another condition should be that the property appraises for at least what you agreed to pay for it. During the escrow period you are likely to require certain inspections, and another contingency should be that it pass those inspections.

Basically, contingencies protect you in case you cannot perform or choose not to perform on a promise to buy a home. If you cancel a contract without having built-in conditions and contingencies, you could find yourself forfeiting your earnest money deposit.