There are only 2 blocks on West Pomona Street and the two blocks total 90 tax parcels.

doing new build rent refinance and repeat im looking for any advice to help build affordable houseing and for scaling 

Is your DSCR ratio greater than 1-meaning are you cash flowing (according to the lender's criteria of mortgage, property taxes and insurance (and HOA) if applicable).

I am looking for an appreciation and to cover most of my mortgage.Also any tips how much such reno could cost are highly appreciated.thank you

The $100,000 cost of the original structure in 2021 would not be depreciated further because it was demolished.So, for tax purposes, you would only depreciate the cost associated with the new construction, not the original structure that was demolished.

Thanks for the tip on using Batchleads.

My insurance and property taxes are also set up in this manner. 

If it's important to be near the Bay area then maybe consider the Tahoe Reno, NV market because it's only a few hours away if you need to go to the office and it offers a landlord friendly environment, low property taxes, and no state income tax.

These are reported and "retained" on IRS Form 8582.Of course, if you are unsure or would like additional guidance in determining what might fit your specific situation, please reach out to a CPA/Tax Professional who may be able to assist.

What I mean by this is considering how much your down payment returns to your net worth (appreciation, loan paydown, tax benefits, AND rent avoidance).