https://www.appfolio.com/blog/2015/01/appfolio-contact-cente...
This type of service has existed for a while with the larger vendors. What differentiates your service?
Licensed property managers are on the hook for the decisions you make. How do you and they manage that liability? Is it even legal to have an unlicensed third party field a call and assign a contractor? I know states where it is not.
If you've been small, you may have flown under the radar but getting attention could change that. The difference between Appfolio/Yardi and what you're doing seems to be the assigning your own contractors bit. That's legally questionable IMO. Maybe less so for first-party but definitely for third-party managers - it technically makes you an unlicensed property manager.