Sure the interest is high, but the investors could be just buying time until the property is sold or assigned, paying the taxes at settlement out of their equity profits.I believe that if the investors can meet with the owner to chat with them, let them know that they have options; sell the house to you, list it, sell for all paper, pay the back taxes, take out a soft or hard money loan, negotiate with tax sale purchase, file counter claim, seek donations from local charities.This tax lien system can keep an investor very busy. 

Correction on my part, house value = hard costs and soft costs, not ARV.

However as you state is regional ,, then its county  ,  then its city  then its zoning overlays.. no one broad brush stroke can determine what you do .. must drill down.

How did you know where to look to estimate all the soft costs involved with a new construction project?  

From the perspective of our team here, we utilize soft credit pulls for 3-4 loan programs that have rehab and 30-year fixed financing.

They would need to hire a PM for the properties though as they are both too soft hearted to say no to some of the potential renters with sob stories. 

Super soft and nice to sleep on. 

I use freedom soft too.

The Zinsser Shellac would be my first option (alcohol based), and I'd use a chip brush to be able to throw it out afterwards.

I like to step down on a soft floor when I get out of bed and feel a lot of renters will as well.