And the work is being done while the current tenants are still living there.

Now, he said, such an action first must be approved by the current tenant.

About half the current tenants are lawyers or in financial services; then it was only 30 percent.

Settling with the current tenants could cost several million dollars.

Those will go on the market in March even though the current tenants are entitled to remain for life.

The apartments can be sold to current tenants for $250.

"You can definitely fit a bed in here," the current tenant says.

Current tenants can buy their apartments at a 5 percent discount.

Current tenants would probably have lost their housing, or lived much longer in dire conditions.

Access to the ruins is by permission of the current tenants.