Marthinsson-Nostdahl Condominiums are located at 403 Park Avenue. These units were built in the late 1950's and early 1960's. The property began as a free-market rental project and was converted to deed-restricted ownership units in 1999 for mitigation of units that were being removed from the old Paragon Building on the Hyman Avenue Mall. The property consists of 10 two-bedroom units - a mix of eight Category 3 and 2 Category 4 units. The configuration of the property is a two-story 5-plex, a two-story triplex and a single story duplex. The total square footage of the property is approximately 6,000 square feet.