In installing, the contractors drilled through the exterior vinyl in order to add duct work for external venting. 

- I think that without being able to answer "YES" to that question, it would be too risky for external investors to jump in the deal.The "deal" is all about the huge numbers you're projecting and that can only be achieved (assuming your projections are accurate) in the short-term rental model.

It's come a long way and it's still coming.Once you factor in local external influencers as well such as the Chula Vista Bayfront development (which is actually making good progress in the approval process),  I would argue that IB will only grow in demand. 

You made me open my eyes now how significant it is to pay attention to the historical cap rate @Immanuel Sibero   I realize that the cap rate is subject to external factors such as the economy and interest rates but I am interested to hear anyone's experience good or bad who bought primarily for cash flow at a lower cap rate but historically it is at a igher rate.

Any external access staircase for the ADU shall not be located at the front of the house.3.

We also notice a few cracks on the tile in the same general area of the external cracks.

Not quite 3000 if you have internal stairs (only count that sq ft once)... and if you have external stairs have you considered a duplex?

I think a lot of people are simply not equipped to think of themselves as anything other than a success in life, and anything that challenges that assumption or the external appearance of it is to be avoided at all cost.In the end, this is what vanity does to people, it turns them into fragile things unable to grapple with the crippling fear of being revealed to the world but also to themselves as less than perfect, as most definitely NOT good enough, as "losers" and "failures" and "second-raters" and all the words the most vain among us use for those they think they're a million times better than.Being able to laugh at yourself and your pretensions is a gift and a great liberation of the spirit.

You still need insurance and umbrella insurance, so what @Ashish Acharya and @Dmitriy Fomichenko is valid, but 1. insurance doesn't cover you in all scenarios and limits and 2. is not doing anything for you in case of an "external" attack (as with the case of a malpractice lawsuit).You might be able to get the FHA loan and then transfer the property (with a warranty deed!)

And then once I check off all of those boxes, and once I sell the property, I get to wait for four or more years for some internal or external auditor or regulator to make sure I did everything right, and make sure I did everything the same way as I did for every other one I did.