Architectural Duplex/Triplex Floor Plans

[John Bacon]

I'm wondering if anyone has a favorite site for finding Duplex/Triplex Architectural floor plans that they think has curb appeal and "in-demand" open floor plans they would like to share.  My property is in Oregon and riverfront so I'm looking for something a little more interesting than cookie cutter.  Also, I need the living area to be at least 7ft off the ground due to 100 year flood plain so thinking lower area would be for vehicles.  Any recommendations are greatly appreciated.