A 105-unit condominium community in South Boston, Boston.
Market figures reflect closed sales over the last 12 months. Data sourced from MLS PIN.
Built in 2018, Port 45 is a collection of 105 contemporary homes positioned at the intersection of South Boston, the Seaport, and the South End. Marketed as one of the fastest-selling new construction buildings in the neighborhood, the property moved quickly through pre-construction and sold out in stages, reaching over 90% sold within its first year of sales. Over the trailing twelve months, four recorded sales produced a median price of $1,287,500, roughly $997 per square foot, with units averaging just 23 days on market.
Based on the listing descriptions, Port 45 offers:
Interior finishes referenced in the listings include contemporary kitchens with custom cabinetry, quartz countertops, and Bosch appliances, along with modern tiled baths and walk-in closets. Monthly HOA fees range from approximately $533.89 to $923, reflecting the variety of unit sizes and layouts.
Port 45 spans a wide range of floor plans, from efficient one-bedroom homes to larger multi-bedroom residences and penthouses. Documented layouts include:
Many homes feature ensuite bedrooms, walk-in closets, open-concept living, and dedicated office or den space.
Port 45's defining advantage is its location where South Boston, the Seaport, and the South End converge — giving residents access to three of Boston's most active neighborhoods from a single address. That positioning, combined with full-service amenities and modern construction, has made the building consistently desirable, as evidenced by its rapid absorption during initial sales and its strong resale metrics.
Justin Rollo is a Massachusetts real estate expert with over a decade of experience and hundreds of South Shore transactions. He tracks every sale, pending, and price movement inside Port 45 — so whether you're buying into the community or thinking about selling, you're working with someone who knows this specific association inside and out.
Ask Justin about Port 45 →Over the last 12 months, units at Port 45 sold at a median of $1,287,500, about $997 per square foot.
Monthly condo fees at Port 45 currently range from roughly $533.89 to $923, depending on unit size and what the association's master policy covers.
Port 45 is a 105-unit condominium association in Boston, MA.
Recent sales at Port 45 averaged about 23 days on market, with 4 closings in the period.
