Good evening, I have a SFR in Miami dade county and this is the zoning info from the county website:Land UseMuni ZonePA ZoneGENERALRU-2 5700 - DUPLEXES - GENERALFrom the county website I was redirected to:  https://library.municode.com/fl/miami_-_dade_county/codes/co...and I think the construction of a new unit in the back (There should be enough space)  can potentially be approved based on the exception (3)ARTICLE XV. - RU-2, TWO-FAMILY RESIDENTIAL DISTRICT[19]SHARE LINK TO SECTIONPRINT SECTIONDOWNLOAD (DOCX) OF SECTIONSEMAIL SECTIONCOMPARE VERSIONSFootnotes: --- (19) ---Cross reference— Height of fences, walls and hedges in RU Districts, § 33-11; location of swimming pools in RU-2 Districts, § 33-20(c); maximum setback for principal residential buildings in RU-2 Districts, § 33-45.Sec. 33-201. - Uses permitted.SHARE LINK TO SECTIONPRINT SECTIONDOWNLOAD (DOCX) OF SECTIONSEMAIL SECTIONCOMPARE VERSIONSNo land, body of water and/or structure shall be used or permitted to be used and no structure shall be hereafter erected, constructed, moved, reconstructed or structurally altered for any purpose in an RU-2 District which is designed, arranged, or intended to be used or occupied for any purpose, unless otherwise provided for, excepting for one or more of the following uses:(1)Every use permitted in RU-1, RU-1M(a) and RU-1M(b) Districts.(1.1)Workforce housing units in compliance with the provisions of Article XIIA of this Code.(2)On lots meeting the requirements for two-family use, every use as a duplex or two-family residence, including two private garages.

Debt is not taxable income, so there should be no taxes due.I'm no lender, but you will need an asset-based loan like DSCR (debt service coverage ratio). 

Again, I strongly believe this is far from over and it would not be prudent base investment decisions on this initial ruling.

Living in California, you will lose your very low property tax base if you do a 1031. 

Based on your numbers, there would be little to no cash-flow (if held as a long-term rental), especially if you factor in the high interest rates. 

They are evaluated based on the property's income and ability to cover the loan payments, rather than the borrowers personal income.

I’m simply providing some insights and opinions based on data I’ve collected. 

Hey @John Suschak, from another veteran, thank you for your service. 

@Orane Jacobs Over the past 6 years, I have help many people from biggerpockets house hack san diego based on their price point anything from a 3 bedroom condo/townhome to a 4 unit multifamily.

You are not in a financial position to maintain, manage nor service the construction nor operation of a duplex/triplex rental investment.