An additional benefit of a detailed engineering-based Cost Segregation Study is that it can increase potential insurance premium savings as well as provide support for the property tax appeals process.

There are also additional costs of operating and maintaining an LLC, like separate bank accounts, annual report filings, tax filings, etc.2.

With the limited info, I would say #1 is your smartest option but there are a lot of variables missing.

I had just gotten done setting up the new ACH info with the last servicer, and had not gotten anything from the new one yet. 

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

@Lauren Merendino you've got a lot of work to do to figure this all out and do it successfully:)Hopefully, the copy & paste info below will be helpful in this journey.

However, our tenant turned out to be problematic—late payments, issues that led to an eviction, and additional repair costs before we could relist the property for sale.Now, after months of making mortgage payments out of pocket, we finally have an offer.

Quote from @Kamal Martin: Quote from @Julian Zamora:Thanks for the info,No I don't live n PR do you? 

I would great appreciate more info in order to make a more educated choice.

How do you finance the tear down do you add it to construction?