Keep up to date with rates
Complacency is a bank's best friend. Banks count on a certain amount of borrowers simply never questioning their interest rate, or asking for a discount. While you may get a great deal when you first take out a loan, as time passes and rates change, this may no longer be the case.
While your broker will usually contact you when they think it may be time for you to re-evaluate your finances, it's always worthwhile to keep your eye on the news and any correspondence from your lender.
Make sure your home loan suits your needs
Not all loan products are created equal. Changes in finances, as well as your personal life, can mean that the current set up of you home loan is no longer offering you the greatest benefits.
For instance, having an offset account linked to your loan will most likely attract a monthly fee. If you have a significant amount of savings in this account then it's well worth your while. However, if you're not using it, you could be paying for nothing.