As a general rule of thumb, expect your rental property expense to run around 50% of the rent (AKA the 50% Rule).
But those numbers vary by property, by neighborhood, by city. Higher-end properties tend to have lower relative expenses compared to lower-end properties, due to lower vacancy rates, lower crime rates, lower turnover rates, etc.
But don’t lean on the 50% Rule when evaluating properties. It’s a quick shorthand, but because each property is unique, make sure you run exact numbers using the rental property calculator above.