Northbrook had 18 sales during the week of Tuesday, July 7 to Monday, July 13, including including 12 single family homes for sale with an average list price of $1,194,982.92, 3 townhouses for sale with an average list price of $687,966.67, and 3 condos for sale with an average list price of $337,966.67. For anyone looking for a brand new home, there is 1 new construction home for sale.