What’s the percentage you can raise your rental?

[Michael Neves]

I’m trying to figure out how much I can raise the rent with out making the tenant run way.

[Patricia Steiner]

Are we taking about your business or the tenant?  The tenant doesn't have any bearing on what you charge.  If you increase rent by $10, the tenant is going to balk ("you're raising the rent!!!").  What determines price is the market.  Do a quick google search of comparable properties in your rental market and compare pricing.  By knowing the rent and price demand in your market, you can set a competitive price, attract quality tenants, and not short-change yourself.  

You're running a business.  Tenants come and go.  Let your tenants know that the rent price will always be determined by market demand to ensure that it's a good value for both of you.