Fix and Flip -Requires a minimum down payment of 10% with 100% of the rehab financed. 

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. 

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

I do it myself and takes 20 to 30 minutes a month (did it yesterday for Dec), with about 7 of those minutes for 1 property in Blount County, TN which requires the form to be manually filled out, write a check, address an envelope, scan doc and check for my records and walk it to my mailbox.

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.

Advanced QuickBooks ProAdvisor was introduced in 2007, to get certified the requirement was: one had to be certified for 3 years in a row and had to attend 2 day in person and online courses.

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

However, as W2 earners, these losses are considered passive and can only offset passive income unless you or your spouse qualify as a Real Estate Professional (REPS) by meeting the 750-hour and material participation requirements or STR is used.

@Helena Goyvaerts rate for a 30-year fix would be at least 8.5% with some points (1% of loan amount).Most DSR lenders have a minimum credit score requirement from the applicant.

This way they can't claim ignorance.I would also require a move out inspection and make it the day after they are supposed to be moved out.