Distinguished 1814 brick townhome in the heart of historic downtown Portsmouth offering a rare blend of luxury, flexibility, and long-term investment value. Enjoy iconic views of the Piscataqua River, Prescott Park, and Strawbery Banke Museum-just steps from Market Square, the waterfront, renowned dining, boutiques, and cultural attractions. The ground floor, currently commercial with soaring 10' ceilings, offers exceptional potential for conversion to high-end residential or continued mixed-use, opening to a private pocket garden/courtyard and shared one-car parking. Upper levels provide refined living spaces with exposed brick and beams, Rumford-style wood-burning fireplace, formal living and dining areas, solarium with park and river views, private deck for outdoor entertaining, and multiple flexible-use rooms ideal for bedrooms or offices. The fourth floor features two bedrooms with custom built-ins and a tiled three-quarter bath. Full basement with ample storage and second washer/dryer hookup. Retain mixed-use income potential or create a full four-story luxury residence totaling up to 2,982 SF-an exceptionally rare offering in downtown Portsmouth. Great opportunity to purchase and entire building in one of the most central locations that this city has to offer. Under an hour from Boston's Logan International Airport. Unit offers a rented garage and a rear pocket garden that may also be capable of parking a very small car onsite with modifications.Offered below city assessment, presenting outstanding value in one of New Hampshire's most sought-after waterfront cities.