Look at the city’s comprehensive plan.  

Our CPA is telling us we can't depreciate our two multifamily properties (purchased both this year) because our household income (married-filing jointly) exceeds $165,000. 

I'm trying to get into the real estate investing game and am looking for a comprehensive guide/walk-through on different investing methods.

I’ve had recipient holders pass away and our HAs always passed their voucher to someone else in the household.

My criteria was things like population growth, average household income, and growing and diversified job market.

Trust there are tons of things I didn't touch on so please don't take my response as comprehensive.

That said, you'll want to be very mindful of location: Many parts of Austell are in or near active floodplains, as evidenced by the catastrophic Flood of 2009 (https://www.weather.gov/ffc/atlanta_floods_anniv).The City of Austell Public Works Department provides comprehensive Floodplain Management services, including education, mapping, and many other resources, at https://www.apwsm.org.

Only you can truly take a comprehensive approach to your overall investments.

I'm sure not a comprehensive list but:HELOC advantage is you don't pay interest on it until you actually draw on it. 

The old rule of thumb was that a prospective borrower could get a mortgage of about three times (2.8-3.6) times gross household income at interest rates in the 6-8% range.