Best estimates I've seen for the value of the building are around $3-4M. We originally bought the building for $2M ten years ago, and that was considered a steal at the time.
Commercial real estate is a bit in the dumps right now, but I would be surprised if the building would sell for less than $3M. We know that multiple developers are interested, just so they can tear down the building and build more apartment blocks like the ones across the street. Worst-case scenario, Omni Commons might be left with "just" a million dollars...
Which also puts PP's proposal into perspective: they are offering to pay $880K for a $3M building? Foreclosure and rehoming to a building that better suits our needs may be a better option. Even better would be for US to find a more suitable buyer who will keep the building in community use.
I don't know how back property taxes are handled when you sell a property, but we already have a payment plan in place for the $200K, and once the county assessor gets off his ass and processes our exemption paperwork, we should no longer owe that $200K (and I assume we should get back most of the property taxes we just paid in December).
Patrik