Regulatory U‑turns Scare Housing Rehab

When a housing regulator changes interpretive rules or applies new definitions retroactively, it can wipe out the investment case for rehabilitating old buildings and prompt owners to defer maintenance or sell. That dynamic transfers risk from the regulator to tenants (via disrepair) or to the public (via loss of affordable units). — If courts uphold DHCR’s reversal, it could chill rehab investment across thousands of units in New York and become a national example of how regulatory unpredictability worsens supply shortages.