999 years is considered a "permanent" lease [1]. 99 years is considered a "more than a lifetime lease" [2] [1] https://en.wikipedia.org/wiki/999-year_lease htt

999 years is considered a "permanent" lease [1]. 99 years is considered a "more than a lifetime lease" [2] [1] https://en.wikipedia.org/wiki/999-year_lease https://en.wikipedia.org/wiki/999-year_lease [2] https://en.wikipedia.org/wiki/99-year_lease https://en.wikipedia.org/wiki/99-year_lease