This flexible office investment/owner user opportunity at 10533 W National Avenue in West Allis, WI offers ±19,010 RSF across a contemporary three-story building with an attractive brick and stone façade. Built in 1971 and situated on a 0.41-acre C-3 Commercial-zoned lot, the property provides versatile options for owner-users, investors seeking income-producing space, or developers pursuing redevelopment potential. The building features multi-tenant suites on all three floors, with immediate availability ranging from 639 to 2,144 RSF, and previously housed a 2,000 SF North Shore Bank branch on the first floor—now relocated to a newly developed site next door. Highly visible monument and on-building signage available with excellent visibility along both W National Avenue and W Cleveland Avenue. The property is positioned along the robust Hwy 100 retail corridor, surrounded by major retailers such as Target, Menards, Pick ’N Save, Marshalls, and HomeGoods. With quick access to I-41 in under 3 minutes (0.5 miles), the location offers excellent convenience for both staff and clients. The asset is offered for sale at $899,000 and is identified as Tax ID 519-9004-000.