Independent bookstore, Sag Harbor Books was established in May 2019 by the owners of Southampton Books, Daniel Hirsch and Gregory Harris. The partners were former employees of Southampton Books buying and renaming Bookhampton Books from Charline Spektor in 2015. Like its sister store, Sag Harbor Books sells rare, collectible, and signed books as well as new releases, general fiction and non-fiction titles, alongside a collection of local-interest books.

Sag Harbor Books, founded by two former bookstore employees, sells new releases, signed, rare, and collectible books.