Those are the hardest to notice because they dont cause any damage and drain normally.

Why don't you just finance it normally?

As an experienced PM, I'm intimately aware of how challenging "normal" property management can be which is why I've always turned down rent by room opportunities.

I enjoy the guaranteed rent and higher rents than most regular properties with a "normal" tenant.

So my folks that I fund do the normal stuff SEO  Direct Mail text and ( what I did) telemarketing. 

SFR prices are dictated by owner occupants, who are happy to overpay as a lifestyle decision.

I'm thinking lots in Mexico are probably normally cash buys, so if you can solve that obstacle for someone, you broaden your buyer pool. 

Where rates are currently are normal rates over the last 100 years or so.

Quote from @Jinglei Shen: I am building my investment portfolio(duplex) in Ohio Cleveland, a few properties i have analyzed  with net cashflow  around $100 to $290 here is one deal I am analyzingDuplex generates $1590 income /month together,purchase price $123,000rate 7.5%, downpayment 25%5% vacancy, 10% mgm fee, $1400/year insurance,10% capex, 5% maintenance,COC is 8.73%monthly net cash $277this deal meets1% rule, bring in positive cash, my question is it in normal range in Ohio Cleveland market? 

Normally I would agree but if we are renting out the main house I don't want them paying for the ADU.