The Tomasis paid $650,000 for the property in Oct. 1999.The 1,705-square-foot house was built in 1963 in the Monte Nido neighborhood.
Kathleen Owens of Coldwell Banker Residential Brokerage is the listing agent for the home.
Mr. Tomasi is a principal at TSArchitects, a Los Angeles firm that provides architecture and interior design services.
Hr earned his bachelor's degree in architecture from the Southern California Institute of Architecture.
According to BlockShopper.com, there have been 59 home sales in the Malibu Coastal Zone during the past 12 months, with a median sales price of $783,750.
Address: 18151 Kingsport Drive
Buyer(s): Alan T Tomasi and Deborah K Tomasi
Seller(s): Dorothy Lawrence (Trustee), Lawrence (Trustee) (Family Trust) and Sull Lawrence
Sale date: Oct. 8, 1999