@Ken RishelBest I can tell, they are forgetting at least Galveston County in TX in that publication;https://www.fema.gov/media-library-data/20130726-1501-20490-5921/fema_p85_apndx_g.pdf

Where can I find reliable data on the renter's market?

But continue to ensure that what you are buying are deals and don't allow some unexpected funds to cloud your judgement.  

FHA, they're ensuring there aren't health/safety issues too.You can tell your local lender to get his *** out of the office and come look at the property a few days before the appraisal.

City-Data

If you are extending new credit secured by a home you will likely need to have your loans underwritten by an RMLO to ensure compliance.  

PM me for data I can provide you and areas I'm targeting.  

If you want to learn how to comp a property there's a whole lot of resources available here on BP and even on Youtube.I suggest you read past "Step 4" in the article for this guy's comp strategy:https://www.biggerpockets.com/renewsblog/2014/04/2...With that said, It's an art not a science really as almost everyone has a different style of comp'ing properties and if you ask an agent to show you how they do it, it'll only be so helpful as your resources for getting data will be different. 

The Memphis Realtors just published the following statistics for January 2016.

 Great point to hire someone that is experienced in the industry otherwise you are just paying for data entry.