Ronald and Delana Mazdra have listed for sale a three-bedroom, three-bath home at 6 Geyer Wood Lane in Frontenac for $549,900.

The Mazdras paid $440,000 for the property in Sept. 2002. The 2,361-square-foot house was built in 1963 in the Frontenac South neighborhood. Steven Mathes of Coldwell Banker Gundaker is the listing agent for the home.

Mr. Mazdra serves as an engineering director at Dassault Systemes ENOVIA, a leader in 3-D and product lifecycle management solutions. Prior to that, he was an engineering director at MatrixOne, Synchronicty Inc. and Cadence Design Systems. He also served as an engineering manager and program manager at Cadence Design Systems and Texas Instruments.

He holds a B.S. in computer science from the University of Missouri–Rolla and an M.S. from the University of Texas at Dallas.

There were 49 home sales in Frontenac in 2008, with a median sales price of $632,000.

Address: 6 Geyer Wood Lane