How much does renters insurance cost?

The answer completely depends on where the property is, how big it is, and all other kinds of actuarial data that insurance companies use. It is usually less expensive than both auto and homeowners in the same area. Best thing you can do is pick up the phone and call a few companies. If you don't know you're renting yet, just make up something similar to what you want to rent to get a ballpark number. Insurance agents can give you a quote in five minutes. Call more than one, but if you are comparing, make sure it's for the same coverages and deductibles.