My partner on the deal financed it using his W-2 income.

If you can’t, then try to go 5-story and get more density of units. 4-story usually incurs all of the additional cost for commercial code without the additional income from higher density.

Can you qualify with IRS income taxes, credit and 80% loan to value non owner in the future?

If it's continuous income, I would look at 2-4 properties in great areas and leverage.

Let's say below is my yearly depreciation2021: -$10,0002022: -$10,0002023: -$10,000As I had no other passive income I couldn't take the depreciation, but in 2024 if I have a passive income can I take the depreciation from all the previous years or only the past year?

This step is about generating income from your investment.Refinance: Once the new properties are stabilized (occupied by tenants and generating income), look into refinancing them based on their new, improved value.

Running a fancy Class A downtown luxury apartment is far different than a 50 year old building in a low income area. 

Passive income here I come 

I like Rental income podcast and the rent prep one.

I own a recently renovated duplex in the DTLA/Westlake area and I have been searching for a local property management company with experience in lower-income, multi-unit zoned neighborhoods.