As a list broker I know that people  will definitely call to complain if they have the feeling that you are in with Big Brother (maybe you're too young to get that reference)You might talk about this the same way you would with almost any audience: home ownership can be a big responsibility with the expense and maintenance....

I was going to build a website, but was wondering if there is already something that does this well? 

You can go to Harris County Appraisal Districts website and see what that number is.

The problem is, there are very few rentals available on the market right now (per Zillow and other websites) so I am having a difficult time determining what rents go for in this area.

@Daniel Rutledge not sure about South Carolina specifically but here in Ohio I can go directly to my secretary of state website and do it myself.

Can anyone refer me someone they have worked with. 

Choose FI, Brad and Jonathan host a podcast and website and had Scott Trench as a recent guest.

I would check with your local sheriffs office, and also check your counties website for any foreclosure listings.

I picked "UpTown Detailing" instead of anything with either my name or the common wash/soap/shine/etc references.

I was at a yard sale recently (I always keep my ears open at yard sales) and the owner starts telling me about this website...