Historically, full service management on the coast has been costly but in recent months management rates have come down and quality has improved.

Of course, I am sure nobody would do that on this site since that would violate the terms of service!

Look for loans such as DSCR (Debt Service Coverage Ratio) loans. 4.

Risks: rates go down and you have to pay a prepay of 2 or 3 %; you have to sell and pay the prepay; rents decline & you can't make the payment like any other type of loan; cost upfront a little more than conventional; need to find experienced broker licensed in the state where subject property sits; servicers are bulldogs. 

What kind of seasoning is generally required as it relates to the rents/revenue as it relates to servicing the note, etc...I currently own one PadSplit (acquired via Subject-to) that has been up just over a month.

So far, nothing.The point is that I believe people spend a lot of money, time, and effort protecting themselves against a non-existent threat.

There are companies such as Cover that offers a full service ADU deliverable from design through construction completion.

Which is fine, especially for non-American expats who can't get loans in their home countries.  

Hard to produce cash flow or break even with that much debt, at that rate.House-hackers, however enjoy certain one time (non-scalable) advantages that should be taken advantage of in the early days: - They can assume pre-existing debt like VA and FHA Loans (rather than take it on Subject-To which is dramatically riskier).- They can rent by the room and self-manage to produce day 1 cash flow.- Many of these HCOL areas also have strict limitations on AirBnB or short-term rentals... that do not apply to owner-occupants - thus allowing for extreme cashflow potential for house-hackers.

It really does depend on timing of being put in service, that bonus it qualifies for (if any) and the life cycle of the elements that can be advanced.