How to Build Credit without Installments

[Kyle Marek]

I'm 25, a teacher with no debt and a some money saved up. I plan on saving money another year because I am lucky enough to be living rent free for now, and my goal is to have a good credit score so I can purchase a multifamily. My problem is I have had limited credit history.

I have had a credit card with a $3000 limit that I use occasionally to fund bigger purchases, but that's about it. I've done research and read the fastest way to build good credit is by paying installment loans on time. Only problem is, I don't have any of these!

What can I do in the next year to build credit as well as possible without having installment loans to help me?

Thanks for your time!