Buying property from an estate

[Dan D.]

Long story, but I bought a house and a portion of the original lot is still with ownership of the person who is deceased.  The house itself went through foreclosure, a slice of the acreage did not.

The remaining piece is still in ownership of the deceased person.

What are my options?

Find each of her children to agree to sell the remaining portion?

Wait for it to go through to be tax forfeited?  What's the timeline for that?

I'm assuming I need all remaining next-generation descendants to sign off on it, correct?