And that's if CA want's to flip the $300m/ $400m in legal fee's to keep fighting for it, for decades.    

Hey BP family, I'm currently trying to help out a family in need from having to foreclose on there property by taking over subject to, it has a high interest rate although the entry is around 20k I want to wholesale this ultimately Is it possible for me, to disregard my initial assignment fee to get a buyer asap and add a 2nd lien on the property as my fee? 

Most folks are charging 10% of the rental rate for monthly PM fees. 1 months rent for a leasing fee and couple hundred for a lease renewal.

You don't have short-term maturity risk, and you don't have prepayment penalty risk (just has a 1% exit fee). 

It's also not fool proof, but is a good start to get a feeing for different areas 

It's an estimated cash on cash return given current rental rates subtract expenses assuming 7% interest rate, 10% management fee, 5% repairs, 5% capex and other expenses like mortgage, insurance, tax. it's a estimate to tell you what properties to analyze vs ignoreyou can see the are pockets of negative returns as well as pockets of positive return. this is to supplement the data @Devin Conley provided

A less then full investigation may result in one thinking that the house and or the house and tennis court lots were what was being sold.As I later found out, a newbie tax lien investor thought they were getting a great bargain by outbidding other misinformed investors and paying the back taxes, legal fees, and an additional $34,000 (overage) which the county forwarded to me.  

After all the fees from closing and paying back the interest on the private loan my new loan was at 335k.

Closing CostsMake sure you also budget for closing costs, which are a collection of fees and payments made to the various parties involved in your transaction.

With the retail center the leases are all NNN and those leases had management fees baked into the leases.