Prime 3-acre commercial development opportunity at the strategic intersection of Narrow Lane and Old Post Road. This expansive assembly consists of two adjacent lots offering an incredible 840+ feet of high-visibility road frontage. Located just steps from the Route 1 corridor, the site benefits from massive daily traffic counts and unparalleled exposure. The corner-lot configuration allows for flexible ingress/egress, making it an ideal location for retail, professional offices, or a flagship service center. Maximize your footprint in Charlestown's growing commercial landscape. Rare 3-acre scale with immediate highway proximity don't miss this high-impact investment. An exceptional, versatile investment and development package offering rare, engineered residential density alongside prime commercial assets in picturesque Charlestown. Ideally suited for developers, housing authorities, or investors seeking to build an age-restricted, mixed-income community featuring both low-to-moderate-income and market-rate units.