B.R.
Hi K.,
Most 1st consults are free. Speak to a real estate attorney; it seems very unusual to lose a property that you own, with a clear title.
Your father-in-law could have gotten a home equity, or some other type of loan to save his townhome. It's still worth looking into, even though he's already been evicted. A good attorney can get a "stay" through the court system, until things are straightened out.
If these are city, county, and state taxes, they must be paid; as well as the dues. But the townhouse is the collateral for the loans to pay off his indebtedness.
Pray to our Father which art in heaven in Jesus name; and then step out on your faith and do the advised things listed above, and see THE LORD wORK things out on the behalf of your family.
Your father-in-law does not need to buy his property a second time, but need to benefit from it.
ALL need to focus on helping dad win this victory. When he is gone to heaven, then his heirs will benefit.
Be Blessed,
Beverly