550 W Main Street offers an exceptional investment opportunity in a fully leased, stabilized 10,000-square-foot, two-story office building. The property features 13 private offices, a diverse tenant roster across medical, wellness, and professional services, and a strong history of tenant retention. With well-maintained interiors and grounds, and an option for future owner-occupancy, the asset is ideally suited for 1031 exchange investors seeking dependable income and long-term upside. Strategically located at the intersection of Mountain Lakes Blvd and Fanny Rd in Boonton, the property provides excellent visibility, prominent signage, and abundant parking in both the front and rear of the building. Its quiet, neighborhood setting creates a welcoming environment that appeals to boutique medical and professional tenants. The location offers outstanding regional access, with immediate proximity to I-287 and convenient connections to Routes 46 and 80. Set on the Boonton–Mountain Lakes border—just minutes from Montville and Denville—the building benefits from strong local demographics and proximity to the vibrant downtowns of Boonton and Denville, helping attract and retain a high-quality tenant base.