"Some of the simplest things can really cause a hiccup when it comes to finalizing your loan."
1. Thou shall not change jobs.
Changing jobs in the middle of buying a home forces us to wait at least one month to gather pay checks from the new company, and that's assuming that it's the same pay structure and the same line of work. Adding another 30 days to a transaction will most likely lead to the seller cancelling the transaction; and if they don't, it will probably lead to you having to pay extra to keep the home.
2. Thou shall not buy a car, truck or van unless you plan to live in it.
Purchasing a vehicle does a couple bad things. 1) It adds an inquiry to your credit, and 2) It will probably be a higher payment than you currently pay, so it will change your debt-to-income ratio. Both of these things are BIG changes to your loan application and very well could lead to you getting declined.
3. Thou shall not add debt on credit cards.
Very much like the purchase of a new vehicle, anything that changes your credit profile also changes your debt-to-income ration and can detrimentally affect your chances of being approved for a loan.
4. Thou shall not let payments fall behind.
This should be a no-brainer, but, you'd be surprised. If you're applying for a home loan, it will probably be the largest liability that you have on your credit. If an underwriter sees that you have recent late payments on other credit lines, it destroys your credibility in regards to paying your bills.
5. Thou shall not spend the money you have saved for your down payment.
Again... logically, no money down, no house. Set it aside, and don't touch it.
6. Thou shall not buy furniture before you buy your house.
This is more of a reminder not to let excitement encourage you to make decisions prematurely. This falls right back in line with adding credit card debt or buying a vehicle.
7. Thou shall not let anyone run your credit.
Applying for anything or letting people run your credit for ANY REASON is a no-no. This will affect your credit, and it will cause several headaches that could cause your loan to be declined.
8. Thou shall not make any large deposits into your bank account.
Every large deposit must be sourced, which means it must have a paper trail. If you can't prove where it came from, it will have to be discounted, and it could affect your ability to show proof of funds to close. If you do not have enough money without the large deposit, the loan will be declined.
9. Thou shall not change bank accounts.
Changing bank accounts causes very much of the same issues that large deposits do. If you plan to change banks, wait to do so until after you are in your house.
10. Thou shall not co-sign for anyone.
Although it may not literally affect your payments, we have to hit you with anything that is on your credit report. So if one of the kids needs a signature for a student loan, wait until your loan is closed, then sign away.
Again... when in doubt, wait until the loan is closed to do anything!