18th century
- 1700 – New Utrecht Reformed Church built.[6][7]
- 1744 – Joost Van Nuyse House, original section was built in 1744 and enlarged between 1793 and 1806. It was moved to its present site in 1925. It is a 1+1⁄2-story frame house with a steeply pitched flared roof.[8] and was listed on the National Register of Historic Places in 2006.
- 1766 – Wyckoff-Bennett Homestead is believed to have been built before 1766. During the American Revolution, it housed Hessian soldiers for the British Army. It was declared a National Historic Landmark in 1976.[2][9]
- 1776
- June 22 - Mayor David Mathews was arrested in Flatbush on orders from George Washington related to his suspected involvement in the Hickey Plot to kill him.
- August 27 – Battle of Long Island (also known as the "Battle of Brooklyn" or the "Battle of Brooklyn Heights"), the largest battle in the American Revolutionary War starts.[3] British Army wins, beginning the New York and New Jersey campaign.[10] The British set up a system of prison ships anchored in Brooklyn's Wallabout Bay, where more American patriot soldiers and civilian captives died than on all the battlefields, combined.
- 1780 – Fort Brooklyn constructed in Brooklyn Heights area along east bank of the East River by the British Army, then occupying New York Town and Manhattan, near Fort Stirling (named for Patriot general, also called "Lord Stirling"). Later razed for housing development by 1823–1825.[11]
- 1783 – "Evacuation Day", November 25, British forces leave New York and Manhattan under terms of Treaty of Paris after occupation of seven years. Gen. George Washington and his officers of the Continental Army take control.
- 1786 – Erasmus Hall High School – oldest public high school in the city, founded as Erasmus Hall Academy, a private school. Later joined by free academy in the 1840s as the first public high school, which later becomes City College of New York.[12] Wooden schoolhouse[13] was opened in 1787. Later wings were added and removed.
- 1788 – New York State debates and ratifies the new Constitution to replace the previous Articles of Confederation and Perpetual Union.
- 1790 – Small population recorded for the villages of Brooklyn and Brooklyn Heights on the western end of Long Island in the first decennial United States Census of 1790.
- 1797 – Population: 1,603 recorded in newly published reference book The American Gazetteer.[14]
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