Study the market.

Will the city and insurance company hold me accountable and give me penalties even if it's living in the basement myself? 

Study and read your local lease templateRead, read, read.Watch youtube videos online of some basic building and construction.

If entities are disregarded, you can keep up with more than 1 in a single QBO account using the location/business feature to keep track of them separately.

Built-in accounting software, keeps track of everything better and helps for tax returns at the end of the year3. multiple payment options are usually available for residents4. maintenance requests all in one area, easier to keep track of and keep residents informed of the status5.

Since the account is linked to your mortgage, overspending can increase mortgage balances instead of paying them down.

Your prior question was shold I use my W2 income to pay down (aka you mean what you have saved in your checking account?).

Quote from @Katie Nolan: Here's the Oregon Landlord - Tenant Law: https://www.oregonlegislature.gov/bills_laws/ors/ors090.htmlHere's a handbook that may be easier to understand: https://oregonlawhelp.org/resources/landlord-tenant-law-oreg...If you're going to be successful, particularly in a heavily regulated state, then I recommend you study the law regularly.

And the net cash proceeds are what go into your 1031 account.  

Have you done a cost segregation study on any of your properties?