The answers can lead to how to structure your business entity for best tax planning. 

Some duplex units are set up as zero lot line properties where instead of owning one unit in a 2-unit condo association and the condo assoc. owns the building, you actually own your half of the building and land. 

Quote from @Kim Li: I own a single-family rental that I plan to sell and use the proceeds (approximately $340,000) toward purchasing a duplex for about $1,000,000.

Is it what you want to do or something your better half suggested to you?

I’ve already ordered the replacements, but they won’t arrive for about a week and a half.

That half bathroom added ~$50k of value per the comps (mission beach, 3 units from the ocean).  

For most smaller investors, paying for a solid bookkeeper would generate a higher (and faster) ROI than hiring a tax strategist.Both roles matter, but you can’t execute any meaningful or complex tax planning without clean books.

We would want to run multiple scenarios to compare your options so you can plan accordingly.I'm with a brokerage and can shop lenders for you and all the different products that would fit your current financials. 

My plan has been once i got situated with a stable source of income to start investing in rental properties.

I would be there for about a year and a half on per diem and likely just make that my home for the time being.