You are correct they handle by PM company liability I have prudential personal liability.OK, yeah, and they (Coterie) doesn't offer commercial umbrella insurance (or personal) so I was concerned you might not be covered correctly.You have a personal liability umbrella through Prudential?  

The loan on this house is $1,200,000.I moved in to my new primary residence by the end of the month.Starting July, my original primary residence was available as a rental and was being shown to prospective tenants.My new tenants signed a lease that began a couple weeks after showing, in July.To calculate my primary residence mortgage interest deductions, i'm using the following formula:650,000 / 2 = $325000 loan from January to June1,200,000 / 2 = $600,000 loan from July to December$750,000 limit / (600,000+325000 total loan value)  = 0.81 multiplier(0.81 * $X first house interest) + (0.81 * $Y second house) = total interest payed i can deduct from my primary residencedoes this look correct?

If that’s correct, here’s my non-expert opinion. 

We would also have to close on the house first before being able to open a business account, correct?

It applies to lawyers, CPAs, doctors, realtors and any other professional.Yet for some reason people believe that AI can produce correct answers every time. 

Then level the floor - really shouldn't need more supports after the first if they were installed correctly.

It's not difficult to find tenants if the property is marketed correctly.

Quote from @Marc Zak: In the market where I live (San Diego), appreciation has been strong and many predict it will continue to appreciate in the long term.However, with current interest rates (6% at best) and property tax (2%), the annual cost burden is 8%.Am I correct in saying that appreciation has to be above 8% annually (plus whatever my maintenance and vacancy costs are) for me to make any money in this scenario if the property is cash flow neutral?

I'm correct on this? 

Recently, I conducted a cost segregation study on the property shortly after converting to a STR (converted June 1 2024), and I want to ensure I file my taxes correctly and legally given this change in circumstances.