Jeanne M. Vissa sold a 1,764-square-foot home at 2323 Lombard St. in Philadelphia's Center City West to Keith M. Lippmann and Eleanor Lippmann for $518,000 on Dec. 15.

The three-story property was built in 1850.

Vissa is a program officer in mathematics at Knowles Science Teaching Foundation. Before joining KSTF, she was a new teacher advisor to Math for America. She also served as the director of the Penn Partnership Schools and has worked with Philadelphia mathematics teachers through several Penn-affiliated institutes.

She received a B.A. in English from Hunter College, an M.S.T. in mathematics from Fordham University, and an Ed.D from Teachers College-Columbia University in curriculum and teaching-mathematics education.

Mr. Lippmann serves as an assistant vice president of broking in Philadelphia at Guy Carpenter & Company LLC.

According to BlockShopper.com, there have been 17,235 home sales in Philadelphia in the past 12 months, with a median sales price of $96,000.

Address: 2323 Lombard Street
Buyer(s): Keith M Lippmann and Eleanor Lippmann
Seller(s): Jeanne M Vissa
Sale date: Dec. 15, 2010