Pre Qualify
Become more attractive to sellers as a pre-qualified buyer.
Some realtors require buyers to get pre-qualified before even starting to house hunt.

Determine how your credit looks.
Lenders will look at your payment history, income, and current debts to determine how likely you are to pay your loan each month. The number value assigned to your “reliability” is known as your credit score and is one of the biggest factors in getting approved for a mortgage.
If you have a credit score below 640, consider delving deeper into your report to make sure it is accurate. Stay current with all monthly payments and reduce debt where possible to boost your score.