Northbrook had 8 sales during the week of Tuesday, September 8 to Monday, September 14, including including 2 single family homes for sale with an average list price of $1,199,500, 4 townhouses for sale with an average list price of $529,975, and 2 condos for sale with an average list price of $228,450. For anyone looking for a brand new home, there is 1 new construction home for sale.