1 Proprietors Drive, Unit #3 offers prime office / business space on the entire 2nd floor of this well-located professional building on Route 139. Outstanding access, pylon signage available, lots of parking (including handicapped), elevator and 2 separate entry / exit points with wide staircases. Perfect for medical use, law offices, financial services, or other professional service-providers. Surrounded by other meticulously-maintained buildings offering a wide variety of goods and services. Building owner / Landlord operates business on 1st floor. Property is < 10 years old. Current configuration of unit is 14 private offices, 2 reception areas, large cubicle / open area, 2 conference rooms, kitchen with large dining area and multiple bathrooms. Cap Rate based on PSF lease rate is (approx) 8.77. Potentially subdividable. Buyers / Lessees responsible for relative due-diligence with owner & town of Marshfield.