You can also start checking out government related sites, HUD, CFPB, Fannie Mae, State Economic Development programs, and professional associations, like ALTA, concerning closing requirements, AIA, for property valuations, NAR has information geared for Realtors.  

I am a member of my local NAR and we have CMA software that allows me to do CAM's anywhere in USA.

Have a look if NAR (National Association of Realtors) publishes any of the state by state data.

If you have any real estate questions or concerns in buying/investing overseas I will be here to help.If you want help in finding agents overseas recognised by the NAR or ICREA let me know.Thank you.

I tried NAR to no avail, any other suggestions?

. , it's common for investors not working with an agent to skip the two part process, it's not a law, just a convention, probably NAR

Act and other Gov Regs (I call it Govt Crap).Here is one, a letter from the NAR, "Impact of Loan Originator Final Rule"

NAR said it objected to that section of the bill because it believes that requiring energy labels would "stigmatize and reduce the value of older properties."

"The Zillow-NAR-ListHub marriage is over; the final legal dissolution is the 1st week in April if not sooner!

But let me do the same to prove a point.Median Home Price 2015 - $220,300 (Source NAR)Median Single Family Dwelling Rent 2015 - $1182 ( Source RealtyTrac)Well even at a 3.92% rate, for 30 years, with 20% down, your mortgage is approx $833 a month.