Also known as: grandfathered uses · grandfather use · grandfathered use · nonconforming uses · vested uses
Written by attorneys · grounded in primary & secondary sources — see below
A preexisting land use that was lawful when initiated but later rendered nonconforming by zoning changes. The owner possesses a vested right to continue the use absent abandonment, extended discontinuance, or a valid amortization period.
Gerald Gibson has operated a construction debris recycling yard for twenty years on land zoned industrial when he began. The county later rezoned the area to conservation use and enacted an ordinance requiring all such yards to cease after eight years. Gibson sues, arguing the period is too short given his infrastructure investment. The court evaluates whether eight years reasonably allows recovery of his capital outlays before the use must end.
Gordon Gray erected a cellular tower on agricultural land in 1995. The city rezoned the hillside residential in 2008 and later passed an ordinance requiring removal of nonconforming towers after fifteen years. Gray has invested millions in upgrades and continues operations without interruption. He sues to block enforcement, claiming the amortization period fails to protect his vested interest.
Select any source to read its text and confirm it supports the definition.
A land use qualifies when it was lawful at the time it began but no longer complies with later zoning. The owner then holds a vested right to continue the use.
Supporting sources
The right ends through abandonment, discontinuance for the statutory period, or a reasonable amortization ordinance that phases out the use after allowing time to recover investment.
Supporting sources
Courts consider the nature of the use, the owner's investment amount and timing, the length of the phase-out period, and whether the period permits adequate recovery without amounting to a taking.
Supporting sources
No. A brief cessation required to meet new environmental or safety rules, accompanied by ongoing maintenance and intent to resume, does not constitute abandonment.
Supporting sources