Heritage Knolls, Search Homes for Sale in Frankfort, IL Heritage Knolls Real Estate Statistics Average Home Size: 2722 Average Property Taxes: 8253 Homes Listed: 9 Homes Sold: 4 Average Number of Days To Sell: 130 The above Frankfort real estate statistics were compiled by Team Bowers Realtors based on homes listed for sale in Heritage Knolls, Frankfort, Illinois between December 19th, 2012 and December 19th, 2013. Homes for sale in Heritage Knolls Address Beds Total Baths Total Sqft Year Built List Price 22134 Somerset Court 4 3.1 0 2000 $349,900 21950 Princeton Circle 4 3.1 3000 2005 $389,900 22049 Oakton Avenue 4 3 2004 1990 $275,000 Sold Real Estate in Heritage Knolls - (September 20th, 2013 - December 19th, 2013) Address Beds Total Baths Total Sold Price 21980 Oakton Avenue 4 2.1 ... 12/19/2013