I passed both on my first try (our state has a 40% pass rate) and I'm happy to share the links to the youtube resources I used to study.

Comparable sales and engineering studies could get messy.

If you're dead-set on OOS REI, then I'd suggest studying up on the books, articles, forum posts, videos, etc. on the subject, and talking with as many OOS investors as possible (ESPECIALLY inexperienced investors who tried OOS REI for one of their first deals).

Study the market.

If you are interested in how to decrease your Federal Taxes and increase your cash-flow, I can help with no-cost consulting or studies specific to your property(ies) whether they are small or large and anywhere in the US or US Territories. 

I am thinking about doing Cost Segregation Study done.  

A question that I am asked frequently is whether or not a cost segregation study is beneficial for single family homes.

Not sure yet...still studying the thing

As @Bill Brandt indicated, virtually every economist’s study indicate rent control is bad for the majority of tenants and the neighborhood, but politicians continue to pass it in new areas.

You will probably want a cost segregation study done to get bonus depreciation.