Echelon

135 Seaport Boulevard, Unit PH3B, Seaport DistrictBoston, MA 02210MLS Number 73594507

  • Price: $4,495,000
  • Est. Mortgage of $/month
  • 1 Day on Market
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Federal 30-year interest rate: 7.32% last updated on Oct 22, 2026
* All Figures are estimates. Check with your bank or proposed mortgage company for actual interest rates.
This product uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis.
  • 2Bedrooms
  • 0.05Acreage
  • 3Bathrooms
  • 2018Year Built
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135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210135 Seaport Boulevard Boston MA 02210
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Cape Coastal Sotheby's International Realty

Your Local Office

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Cape Coastal Sotheby's International Realty
Office: 508-477-6688
540 Falmouth Road (Mashpee Rotary)
Mashpee, MA 02649
Positioned atop EchelonSeaport Tower 2, this is the only Penthouse remaining residence in the building. The top penthouse features bright southern exposure, 2 bedrooms plus a study, and 2.5 baths. Refined finishes include a gas fireplace, wide-plank ivory oak floors, a custom Italian kitchen with Gaggenau appliances and beautifully built out closets. Two garage spaces—one assigned and one valet—are included. Residents enjoy 50,000+ SF of exclusive amenities, including three pools, a state-of-the-art fitness center with basketball court, sports simulator, and yoga studio. The Club Level offers a lounge, library, private dining room, and expansive terraces with grills and fire pits, plus 24/7 concierge, doorman, and porter services alongside vibrant on-site retail and dining.

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Basic Information

  • Bedrooms2
  • Mls StatusNew
  • Bathroom3
  • Parcel Number W:06 P:02642 S:591,5175554
  • Unit NumberPH3B

Location

  • NeighborhoodSeaport District
  • SubdivisionSeaport District
  • Address135 Seaport Boulevard
  • Building Number135
  • CountySuffolk
  • StateMA
  • StreetSeaport Boulevard
  • TownBoston
  • Zip02210

Property Information

  • Square Feet2,164
  • Building Area Source Public Records
  • Living Area 2,164
  • Lot Size Square Feet 2,164
  • Lot Size Units Acres
  • Property Attached YN Yes
  • Spa YN Yes
  • Structure Type High-Rise

Legal

  • ZoningCD

Other

  • Association Fee $5,128
  • Association Fee Frequency Monthly
  • Association Fee Includes
    • Gas
    • Heat
    • Insurance
    • Maintenance Grounds
    • Reserve Funds
    • Security
    • Sewer
    • Snow Removal
    • Trash
    • Water
  • Date Listed10/23/2026
  • Farm Land Area Units Square Feet
  • Spa Features Hot Tub/Spa
  • View Count2

Tax Information

  • Tax Assessed Value $4,762,200
  • Tax Year 2026
  • Taxes$59,051

Rooms

  • Bathrooms Total Decimal 2.5
  • Full Bath2
  • Half Baths1

Building

  • Attached Garage YN Yes
  • BasementN
  • Building Area Units Square Feet
  • Common Walls No One Above
  • Entry Level 25
  • FireplaceYes
  • Fireplaces Total 1
  • Garage Spaces2
  • Property NameEchelon
  • Rooms5
  • Stories1
  • Year Built2018
  • Year Built Details Under Construction
  • Year Built Source Public Records

Water Body

  • Miles to Beach0.5
  • WaterfrontYes
  • Waterfront Features Waterfront, Ocean, Harbor,3/10 to 1/2 Mile To Beach

Parking

  • Parking Spaces2
  • Covered Spaces 2
  • Garage YN Yes
  • Parking Features Under

Basic Information

  • List Price$4,495,000
  • MLSPIN 73594507
  • Modification Date10/23/2026
  • Property SubTypeCondominium

Property

  • Acreage0.05

Exterior

  • Exterior Features Hot Tub/Spa

Utilities

  • Cooling Central Air
  • Cooling YN Yes
  • Heat SystemYes
  • Heating Heat Pump
  • Sewer Public Sewer
  • Water Source Public

Amenities

  • AmenitiesPublic Transportation, Shopping, Park, Walk/Jog Trails, Highway Access
  • Association Amenities
    • Clubroom
    • Elevator(s)
    • Fitness Center
    • Hot Water
    • Parking
    • Pool
    • Recreation Facilities
  • Other AmenitiesFireplace, Waterfront, Water View
  • PetsYes
  • Pool Features Association, In Ground, Indoor, Heated
  • Security Features Doorman, Concierge

Driving Directions

Listed by Laura Rodriguez of The Collaborative Companies

Seaport District Boston, MA Demographics

There is no data available

Seaport District Boston, MA Real Estate Market Data

There is no data available

Seaport District Boston, MA Schools

School NameDistanceTypeGrades

The property listing data and information, or the Images, set forth herein were provided to MLS Property Information Network, Inc. (MLSPIN) from third party sources, including sellers, lessors and public records, and were compiled by MLSPIN. The property listing data and information, and the Images, are for the personal, non-commercial use of consumers having a good faith interest in purchasing or leasing listed properties of the type displayed to them and may not be used for any purpose other than to identify prospective properties which such consumers may have a good faith interest in purchasing or leasing. MLSPIN and its subscribers disclaim any and all representations and warranties as to the accuracy of the property listing data and information, or as to the accuracy of any of the Images, set forth herein.

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