I don't know if this is required in your locality but if it isn't get rid of it.

Assuming you don't have a mortgage that requires a certain level of insurance, you can get a stop-loss policy covering all the properties. 

Simplified ManagementFor those managing multiple properties, AB 2622 streamlines operations by expanding your hiring pool and removing the red tape often associated with minor repairs.Why It Matters for TenantsTenants also benefit from AB 2622:Faster Maintenance: Minor issues like plumbing or lighting can now be resolved promptly.Fairer Move-Out Costs: Affordable repairs mean tenants aren’t hit with inflated charges for damage beyond normal wear and tear.Things to Keep in MindWhile AB 2622 makes maintenance easier, landlords should still vet unlicensed workers carefully, ensure proper insurance coverage, and remember that jobs requiring permits must involve licensed contractors.AB 2622: A Win-Win for California’s Rental MarketAB 2622 strikes a balance between flexibility and accountability, making it easier for landlords to maintain high-quality rentals while fostering better tenant relationships.

It is an advanced technique that requires expertise and being well funded.Also, once someone has received a notice of foreclosure, it shows on his credit report as a foreclosure and you can Not save his credit by buying the house before the auction.

REI is full of surprises and they all require money.

typically no special license is needed when doing it for hard money loans that I am aware of. there may be states like california and nevada that are tricky where lenders need a license of some sort but for most part brokers i have seen are not licensed. 14 or 15 states require state license and NMLS registration.

What special purpose equipment do you have for an ADU/Office that required unique wiring for it to function? 

With Chicago's new Express Permit Program, it's a bit easier to get permits for work that would have previously required architectural drawings. 

If yu claim one it doesn't void the option to claim the other one.Provided you meet the IRS requirements for both, as a tax strategy, you could complete exclude a portion of capital gains under Section 121 and then defer the remaining capital gains under Section 1031 (@Dave Foster is a great resource for 1031 exchange). ..

It requires a lot of work and it will be overwhelming, but the education alone is worth way more than what you pay.