Is it a "Grandfathered" Use?

Longevity Doesn't Guarantee Permissibility

Preface: Unfortunately, people still use the term “Grandfathered” to describe being ‘exempt’ from a law despite the term’s adaptation from grandfather clauses that were used to deny certain voting rights as recent as the 1960s. Presently, people often use the term “grandfathered” when addressing what they believe is there exemption from zoning regulati…