A 99-year lease is, under historic common law,[where?] the longest possible term of a lease of real property. It is no longer the law in most common law jurisdictions today, yet 99-year leases continue to be common as a matter of business practice and conventional wisdom.
The law
Under the traditional common law doctrine, the 99-year term was not seriously literal, but merely an arbitrary time span beyond the life expectancy of any possible lessee (user) or lessor (owner).[1][2]
In the law of several US states, a 99-year lease will always be the longest possible contract for realty by statute, but many states have enacted shorter terms and some allow infinite terms.[citation needed]
Due to the influence of the ideas of Henry George at the time the Australian Capital Territory (ACT) was established in the early 20th century, all land in the ACT is held under 99-year leases, the first of which expired in 2023.[4]
Public housing in Singapore – all HDB flats are sold with 99-year leases. Upon expiry of the lease, control reverts to the government of Singapore.
Africa
Suakin Island – On 17 January 2018, as part of a rapprochement with Sudan, Turkey was granted a 99-year lease over Suakin Island. Turkey plans to restore the ruined Ottoman port city on the island.