Say, I have a potential client that has asked me to value a 7 unit apartment building.

I let people do it if they’ll rent a batch of units.

You'll find more 2-5 units in some of the older parts of our city right outside downtown. 

A lot of qualifying questions for any potential tenant.Having said the above, I ask for some "standard" things, such as the names of everyone who'll be living at the unit.

We have been able to save up some money for our first turnkey multiple unit building.

Investment Info:Large multi-family (5+ units) commercial investment investment.

There is more then 1.3million sec8 rental units is US.

As for valuation, I see no reasons why a Junior ADU would negatively impact additional housing unit.

But, the self-sufficiency test for FHA loans can be really difficult in SF, meaning that the market rent from units you will not occupy must be sufficient to pay for the mortgage payment. 

Aside from arbitrage, I am looking into multi units.