Trying to buy a house need to improve credit score?

There are no shortcuts to fix your credit. Your score is a measure of how you have managed your credit for the past 7-1/2 years. It takes years to establish good credit and only a few months to destroy. Pay all your bills on time every time, never missing a payment. Avoid carrying a balance month-to-month that exceeds 20% of your credit limit on any one card. With time, your score will improve.