Blockshopper.com co-founder Edward Weinhaus and his wife, Natalie, bought a five-bedroom, 3.5 bath at 102 Ladue Aire Dr. in Creve Coeur for $648,000 from Harold and Sheryll Gilbertson on June 20.

The Gilbertsons paid $499,000 for the 4,015 square foot home in April 2001. It was built in 1983.

Formerly a real estate investor, Mr. Weinhaus helped co-found Blockshopper.com with Chicago native Brian Timpone in March 2006. Mr. Weinhaus oversees operations for the St. Louis version of Blockshopper, which also offers a Chicago site and is planning a nationwide rollout in 2007-08.

The sites fuse local real estate data and community news.

Mr. Weinhaus previously was a principal with Houston Buyers/Oak Willow Builders, a real estate investment firm in Houston founded in 2003. He also founded HoustonRealNews.com, an advertiser-supported online real estate newspaper serving the Houston area.

A licensed realtor, Weinhaus has bought and sold 150 residential properties.

Prior to entering real estate, Weinhaus worked in an executive capacity with Columbus-based American Electric Power (AEP), Chicago venture consulting firm JumpStart Capital Partners, Boston Consulting Group and golf resort owner KSL Recreation.

He also advised on the start-up of GolfSpan.com and ePrairie.com.

Weinhaus began his business career as a derivatives trader for Swiss Bank-O'Connor in Chicago.

Mr. Weinhaus received his M.B.A. from the University of Chicago and is a graduate of the London School of Economics.

Address: 102 Ladue Aire Drive
Buyer(s): Edward A Weinhaus Natalie B Weinhaus (and husband) (and wife)
Seller(s): Harold K Gilbertson Sheryll Gilbertson (and husband) (and wife)
Sale date: Jun. 20, 2007