You'll notice as you go South and you research Red States laws are more in favor for Landlords and Property Taxes are more manageable..  

Choose to politely defer and renegotiate with the 70% owner and let them negotiate for you with the big buyer (this might work in your favor if the purchase is somehow linked to a certain number of units coming with the 70%.3.

In case it matters  the property in question has about 50% equity.

You might also want to throw in a sweetener based on a percentage of the equity in the property if it has appreciated in value. 

The balance is the necessary Equity. 

You don't need a realtor, and you aren't pressed for time, you have equity as well.

I would ask you to remember this for those times -- whenever you choose to do a tenant in distress a favor or cut them a break, always ask yourself if you're really helping someone or just enabling their self-destructive behavior.2.

You need to have 20% equity and it is very easy to estimate.

This gives you flexibility to sell or refinance when market conditions are favorable. 

We have approximately 120k in equity in the home.