Analyze the finances in detail to understand the potential ROI, cash flow, expenses, financing costs, and tax implications of each property.

The primary reason for rezoning (aside from complying with laws) is that it did save tremendously on taxes.

Thanks, my cousin is a trained Geometra, so I will consult with him.

Also any advice on how to lower the tax on my flips. 

Another way to do it is lookup 203k consultants in your area.

I understand for tax purposes that I can only take two-thirds of the expenses related to the house to offset the rental income.

Then compare against the cash flow after taxes from the business. 

I feel Ike they pivoted quite a bit in the last few years since city and subsequent county license requirements spurred an STR plateau and the motivations are a bit deeper and multi-purposed now.Take parallel economies, such as Uber/Lyft, the ONLY two TNC license holders in the state and each year pay an excise tax of a few hundred thousand a piece, if not more (just for the permit, not including the whats taken from drivers).

There are good entitlement consultants in LA who you could maybe pick their brain and they may give you some tips.

It's crucial to align this decision with the nature of your income sources and their respective tax treatments.