A striking expression of modern elegance and elevated city living, this rare top-floor residence at Echelon Seaport sets a new benchmark for luxury in Boston’s most vibrant waterfront neighborhood. PH3A offers 2,013 sq ft of thoughtfully designed space with dramatic city views and harbor exposures. Flooded with natural light through floor-to-ceiling windows, it features wide-plank white oak flooring, a sleek gas fireplace, and an airy, open-concept layout ideal for entertaining or everyday sophistication. The designer kitchen boasts custom Italian cabinetry, integrated Gaggenau appliances, and an oversized island. The expansive primary suite is a serene retreat with a spa-inspired marble bath and walk-in closet. Two additional bedrooms provide flexibility for guests or work-from-home living. Residents enjoy world-class amenities including indoor/outdoor pools, a state-of-the-art fitness center, luxury spa, sky lounges, 24-hour concierge, and valet.
Listed by Joseph Barka
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Compass
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617-784-8760
Last updated September 05, 2025
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Source: MLSPin #73420149
Listing Facts
TypeCondo
NeighborhoodSeaport District
Bedrooms3
Bathrooms3
Days on Prevu17
HOA/Maint. Fees$4,907/month
Taxes$60,976/year
Size2,013 sqft
Price per sqft$2,608
Amenities
Pets Allowed
Air Conditioning
Parking
Swimming Pool
Fitness Center
Location
Mortgage Calculator
Listing History
08/20/2025
Listed by Compass
$5,250,000
Property Details for 133 Seaport Blvd PH 3A
Association
Amenities
Association Amenities: Pool, Elevator(s), Fitness Center
Community Features: Public Transportation, Shopping, Pool, Tennis Court(s), Park, Walk/Jog Trails, Medical Facility, Bike Path, Conservation Area, Highway Access, House Of Worship, Marina, Private School, Public School, T-Station, University
Exterior Features: Balcony, Hot Tub/Spa, City View(s)
Features
Pool Features: Association, In Ground, Indoor, Heated
View: City
Waterfront Features: 1 To 2 Mile To Beach
Measurements
Building Area Total: 2,013
Building Area Units: Square Feet
Lot Size Units: Acres
Financial
Taxes
Parcel Number: 5135829
Tax Annual Amount: $60,976.00
Tax Assessed Value: $5,214,500.00
Tax Year: 2025
Interior
Features
Fireplace: Yes
Fireplaces Total: 1
Flooring: Hardwood
Spa Features: Hot Tub/Spa
Spa: Yes
Measurements
Living Area: 2,013
Living Area Source: Master Deed
Rooms
Basement: N
Bathrooms Full: 2
Bathrooms Half: 1
Bathrooms Total Integer: 3
Bedrooms Total: 3
Rooms Total: 6
Parking
Parking
Attached Garage: Yes
Covered Spaces: 2
Garage Spaces: 2
Garage: Yes
Parking Features: Under, Deeded
Utilities
Equipment
Cooling: Central Air
Has Cooling: Yes
Heating: Forced Air
Has Heating: Yes
Laundry Features: In Unit
Sewer: Public Sewer
Water Source: Public
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