Tax relief is one temporary and hardly sufficient remedy for property owners with crumbling concrete here. Of course, with government administered town-by-town in this state, not countywide, the cost to the town tax base adds up. Assessment reduction just shifts the burden to other taxpayers. The defective concrete, unlike the OP's subject, cannot be repaired but must be replaced. That involves disconnecting the utilities and secondary structures, lifting the house, demolishing existing foundation and removal, replacement of foundation and resetting of the house. Typical cost can be close to the value of property. So yes there are types of defects that can be addressed with assessment reductions. In this case, almost every insurer declined to honor claims. Homeowners were stuck as the defects became evident right about the time many HOs were paying off their mortgages, so assessment reduction was all many had.