The 1,874-square-foot house, built in 1920, is in the Fiske Terrace-Midwood Park Historic District.
Porret is a legal officer at the United Nations Counter-Terrorism Executive Directorate.
He holds an LL.B. and a degree in common law from McGill University.
According to BlockShopper.com, there have been 103 home sales in Flatbush during the past 12 months, with a median sales price of $355,000.
Address: 667 East 18th Street
Buyer(s): Porret, Marc, Cartier and Stephanie
Seller(s): Phillips, Owen, Phillips, Eliza, Gran and Eliza
Sale date: Nov. 3, 2011