Seems like the converse to an idea I once had, wherein if the property tax assessor valued a parcel of real estate too highly, the owner could compel the municipality to buy it at that price. Assess too low, and you don't get enough property taxes, but assess it too high, and the owner calls your bluff.

Related is an the idea for eminent domain reform, where instead of compelling a sale, the government could usurp an arm's-length sale in progress, taking the property, paying the owner the agreed-upon sale price, and paying the disappointed buyer a percentage of the sale price, plus any actual costs incurred by failure to take possession of the property. That would likely feed the property-flipper industry, where an eminent domain seizure counts as an instant flip.