I work with BrightSide property management software and we have clients with a handful of properties and others with hundreds.

I know the market from first hand experience.Dallas Ft Worth is a fabulous market, all the data says so.

On the other hand, they will manage investor's unit as part of an 'apartment complex' (https://www.zillow.com/b/6734-summer-fest-drive-109-110-san-...).

Neither outcome is good for you.I give some approximations of each expense category in The Hands-Off Investor, but the best way to nail down operating costs is to look at the property's historical performance.For example, Contract Services and Utilities. 

Once you get through move in, the day to day management is pretty hands off and easy (famous last words, but so far, so good).Other than that, get a second opinion/eye from someone you trust - preferably a professional designer - on the furnishings and design.

You share the lease, you share his payment history, and you give a total of what is owed.

I’ve been doing it for the last 6-7 years and acquired a handful of properties this way. 

If you do it right, it’s arguably the best market to invest.Purchase: $80k-$130kRent: $1100-$1500 (no rent control in MI)1% rule: .9%-1.4% rule dealsCoc ROI: 5-12%Total ROI: 20-40%Cash flow: $50-$250/door (after all expenses and budgeting for maint, capex, vacancy)Appreciation: 3-10%+ (has been double digit for a decade)Location: C+, B-These numbers are based on the “sweet spot” in Metro Detroit.

I find it more helpful to track on my total cash into the deal (inclusive of furniture, amenities, etc), so cash on cash and monthly net cash flow are the two metrics I find are most informative when I'm looking at a purchase. 

Blockchain on the other hand as a technology does have useful applications