However, this would be pathetic RE returns and more so for out of country and it includes the far from certain appreciation.I suspect you will need to offer the 50% stake at a significant discount otherwise the investor could just purchase without a partner.  

That does not include any expenses, vacancy, etc.similar rent minus PITI does not equal cash flow.  

Mostly a single ADU added in a single family zone area will add less value than the cost of the hands on addition.Depending on the financing my underwriting with a high LTV (80% LTV) for $200k would be cash neutral at a rent point at about $2200 when allocating for all expenses without including any land value.  

General Partner is elderly fatherb.  12 Limited partners - all children , spouses not included - cheaper by the dozenc.

My interests includes but is not limited to co-listing Airbnb, short term, medium term or long term rental properties just to include a few.

Yes, you can deduct related expenses including gas, loan interest, insurance, etc. using the actual vehicle expenses method to deduct auto expenses for your rental or other businesses. 

Once the tenant applies for the unit, you'll have to work with the tenant and Section 8 to get approval, which always includes an inspection of the unit.

Cost was about a dollar a mailer and my assistant's time, including postage.

We are in Tampa so a similar market.We provide a starter set which is clearly communicated to guests (thought some people do not like it and clearly do not read which you cannot help) generally consisting of:- 2 Laundry Pods- 2 Dishwasher pods- 2 Rolls of Toilet Paper per bathroom- 2 Paper Towel Rolls- 2 Trashbags- All soaps are refillable including dish soap, hand soap, and body washes/shampoos.They are expected to get their own should they run out of anything. 

Typically this takes 6–9 months, including 2–3 months for permitting and 4–6 months for construction.You can browse their current plans online, with design costs ranging from a few hundred to close to $2,000: ADU Fast Track Plans2.