Landmark at Tanasbourne is a multifamily property that was built in 1998. Located at 3120 NW John Olsen Avenue in Tanasbourne, Portland, this property has a total number of 285 units, with the following unit breakdown: One Bedroom, Three Bedroom/Two Bath, Two Bedroom/Den/Two Bath, Two Bedroom/One Bath, Two Bedroom/Townhouse/One and One Half Bath, Two Bedroom/Two Bath, totaling 282,934 SqFt.