Assumable mortgage at 2.75% available to eligible buyers -- a rare and significant advantage in today's rate environment.Waterfront living on the St. Clair River, with an income stream already running. This beautifully maintained legal duplex is one of the most versatile ownership opportunities on the river. The upper unit (the main house) is currently generating $650 per night as an active short-term rental, booked every weekend this summer. A self-contained in-law suite with walk-out entrance (1 bed / 1 bath) functions as a legal second unit. The lower unit is not currently rented, meaning a buyer can occupy it, rent it long-term, or add it to the short-term rotation for even greater income. Both units hold active dual certification for long-term and short-term rentals, including a current Airbnb/STR license. Achieving legal duplex status required a single HVAC disconnect at the furnace -- the ductwork remains fully intact throughout, making conversion back to single-family use straightforward if a buyer prefers.The main residence features 5 bedrooms and 3.5 baths across two fully appointed levels, each with its own kitchen and living area. Step onto your Airbnb-approved dock, watch Great Lakes freighters pass from your three-season room, or host gatherings on the riverside patio. The fully fenced yard is made for summer. Several bedrooms offer direct river views.Minutes to downtown Port Huron, shopping, and highway access. Easy cross-border access to Sarnia via the Blue Water Bridge. Year-round living or the perfect waterfront retreat -- this property delivers both.