William M. Kurple and Sandra J. Kurple have listed for sale a five-bedroom, 4.2-bath home at 12 Lake Forest Court W. in St. Charles for $799,000.

The Kurples paid $680,000 for the property in July 2002. The 5,131-square-foot house, which was built in 1991, is in St. Charles North of 70. It is located in the Lake Forest subdivision. Susan Johnson of Coldwell Banker Gundaker is the listing agent.

Mr. Kurple is the president at Novus Power Products, a supplier of frequency references, distribution amplifiers and more. He previously was a director at Motorola/Timex JV.

According to BlockShopper.com, there have been 520 sales in St. Charles during the past 12 months, with a median sales price of $150,000.

Address: 12 Lake Forest Court W