A 99-year lease was, under historic common law, 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.
William Blackstone states that a lease was formerly limited to 40 years, although much longer leases (for 300 years, or 1000 years) were in use by the time of Edward III. The 40-year limit was based on the unreliable text "The Mirror of Justices" (book 2, chapter 27).
- Ground rent
- Rule against perpetuities
- 999-year lease
- Australian Capital Territory
- Convention for the Extension of Hong Kong Territory resulted in the 99-year lease of Kowloon, New Territories to Britain in 1898
- Mortgage News Daily web site article on a 99-year lease. Accessed 20 February 2008.
- Cecil Adams, Why are leases made for 99-year terms?, 22 July 1977, found at The Straight Dope article on 99-year lease. Accessed 20 February 2008.
- William Blackstone (1753), Commentaries on the Laws of England, Book 2, Chapter IX "Of estates less than freehold"
- Law Office of James Kaklamanos web site page on 99-year lease. Accessed 20 February 2008.