Crystal Lake had 18 sales during the week of Tuesday, July 7 to Monday, July 13, including including 10 single family homes for sale with an average list price of $502,160, 3 townhouses for sale with an average list price of $352,100, and 5 condos for sale with an average list price of $215,760. For anyone looking for a brand new home, there is 1 new construction home for sale.