As values increase, keep taking more HELOCs - which they can do until something in their lives hits the fan and the owner can't keep up with the payments.

You have no control over it and may increase quicker of a rate than your rent increases. 

Santa BarbaraUnder the proposal, evictions of 15 or more units would result in the landlord having to pay tenants four times the median advertised rental rate or $5,000, whichever is greater, and increase the notification requirements to 90-days in cases where more than 10 tenants are displaced.No monetary relocation assistant would be provided for eviction with 14 units or fewer.

So you may avoid the $100 a year increase in rent, but what about increase in taxes, insurance, or the general cost of living?

I second having wooden windows increases that likelihood of lead paint so that is another reason for vinyl windows.

Just an additional way to increase my revenue.

Whoever is leftover can not afford such high prices plus the increasing interest rate.2018 spring might be a peak, and fall is a turning point.Less bidding war.I felt that this winter might see more declines.

They would have a vested interest in making the value of the property increase, and it sounds like there is room for it. 

Sure looks to me like you made some big sacrifices for long term success... doubled your portfolio... in a year you'll have all your money back out... over $200/door cash flow... once you get your rents up where they should be it will increase as well.... for most on BP, the long game is the driving force. 

They won't include any likely increase taxes.