Finally, use CBRE's 'Multifamily Cap Rate Survey First Half 2018' report to determine what cap rate stabilized properties of similar class are trading for in your area.

My background is in predevelopment, I have over 8+ years experience in permitting (residential), surveying (platting),  some commercial real estate, marketing and I'm also a real estate photographer, so I'm very knowledgable in those areas and wear many hats, but I'm clueless when it comes to the areas that follow after development.

You would need a rental survey and copy of a lease.

A survey is a couple hundred bucks, just get a survey

You can beat the Chinese drum all you like but even the BC government's survey proved (the survey that was used to put in draconian investment laws which resulted in the market slowing down) that "Chinese" buyers are less than 10% of the entire volume traded - in BC!

Here in Maricopa County, they do an aerial survey of the county every year.

If single family home do a survey and check for boundary violations etc.Unless you are getting a sizable discount this may not be worth the effort.

We may require a survey if there is not one already – these normally cost between $350 – $450 for a single family house in a suburb.

I find it very difficult to buy liens, deeds or redeemable deeds in locations I have not seen or have someone to survey the property for me. 4- not sure...maybe knowing the different rules at each county auction. 

Obviously I am thinking of getting the property surveyed and thinking of building it back up to a potential getaway/airbnb.