Exceptional opportunity to acquire a freestanding, fully renovated turnkey medical or professional office building in the heart of Center Moriches. This 2,947-square-foot property is prominently positioned on Main Street, one of Brookhaven’s most active commercial corridors, offering excellent visibility and accessibility. Situated on a 0.37-acre lot, the building provides parking for up to 20 vehicles and features 71 feet of high-exposure street frontage. Zoned J Business, the property supports a wide range of professional and medical uses. A partial leaseback opportunity may be available, and additional land at the rear could allow for future building expansion. Inside, the main level has been thoughtfully renovated and meticulously maintained. It includes a spacious professional waiting area, a central reception and administrative workspace, multiple exam or treatment rooms, two private executive offices, one with its own private bath, a conference room, break area and an additional two bathrooms, one of which is ADA-compliant. The finished basement, accessible via exterior or interior entrance, houses a lab, billing area, and a full bathroom with shower, plus utility area and ample storage. The location offers significant advantages, surrounded by a vibrant mix of local businesses and national retailers, with close proximity to major highways ensuring seamless regional access. This property offers rare turnkey readiness, flexible use potential, and prime positioning for medical professionals, service providers, or investors seeking a quality asset in a high-demand location.