Rare 25th floor penthouse in Tower 1 at Echelon Seaport featuring two parking spots, deeded private storage, and corner views featuring the city skyline and Boston Harbor! PH3A offers 2,013 sq ft of thoughtfully designed space with dramatic city views and harbor exposures. Flooded with natural light through the west facing 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.
Sold for $4,900,000
$4,900,000
133 Seaport Blvd #Penthouse 3a, Boston, MA 02210
3beds
2,013sqft
Condominium
Built in 2020
-- sqft lot
$4,947,500 Zestimate®
$2,434/sqft
$21,558 Estimated rent
Home value
$4,947,500
Estimated sales range
Not available
$21,558/mo
Zestimate® history
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List your homeWhat's special
Sleek gas fireplaceOpen-concept layoutCustom italian cabinetrySpa-inspired marble bathExpansive primary suiteHarbor exposuresCorner views
Zillow last checked:
Listing updated:
Listed by:
Joseph Barka 617-784-8760,
Compass 617-206-3333
Bought with:
Michelle Otey
Luxury Residential Group, LLC
Source: MLS PIN,MLS#: 73420149
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 3
- Bathrooms: 3
- Full bathrooms: 2
- 1/2 bathrooms: 1
Primary bathroom
- Features: Yes
Heating
- Forced Air
Cooling
- Central Air
Appliances
- Laundry: In Unit
Features
- Flooring: Hardwood
- Basement: None
- Number of fireplaces: 1
- Common walls with other units/homes: No One Above
Interior area
- Total structure area: 2,013
- Total interior livable area: 2,013 sqft
- Finished area above ground: 2,013
Property
Parking
- Total spaces: 2
- Parking features: Under, Deeded
- Attached garage spaces: 2
Features
- Exterior features: Balcony, Hot Tub/Spa, City View(s)
- Pool features: Association, In Ground, Indoor, Heated
- Has spa: Yes
- Spa features: Hot Tub/Spa
- Has view: Yes
- View description: City, Water, Ocean
- Has water view: Yes
- Water view: Ocean,Water
- Waterfront features: 1 to 2 Mile To Beach
Details
- Parcel number: 5135829
- Zoning: res
Construction
Type & style
- Home type: Condo
- Property subtype: Condominium
- Attached to another structure: Yes
Condition
- Year built: 2020
Utilities & green energy
- Sewer: Public Sewer
- Water: Public
Community & HOA
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
- Security: Doorman, Concierge
HOA
- Amenities included: Pool, Elevator(s), Fitness Center
- Services included: Heat, Gas, Water, Sewer, Insurance, Security, Maintenance Structure, Maintenance Grounds, Snow Removal
- HOA fee: $4,907 monthly
Location
- Region: Boston
Financial & listing details
- Price per square foot: $2,434/sqft
- Tax assessed value: $5,214,500
- Annual tax amount: $60,976
- Date on market: 11/22/2025
Price history
| Date | Event | Price |
|---|---|---|
| 11/5/2025 | Sold | $4,900,000-6.7%$2,434/sqft |
Source: MLS PIN #73420149 Report a problem | ||
| 10/17/2025 | Contingent | $5,250,000$2,608/sqft |
Source: MLS PIN #73420149 Report a problem | ||
| 8/20/2025 | Listed for sale | $5,250,000-4.5%$2,608/sqft |
Source: MLS PIN #73420149 Report a problem | ||
| 8/11/2025 | Listing removed | $5,495,000$2,730/sqft |
Source: MLS PIN #73366608 Report a problem | ||
| 4/30/2025 | Listed for sale | $5,495,000+6.7%$2,730/sqft |
Source: MLS PIN #73366608 Report a problem | ||
| 1/21/2022 | Sold | $5,152,000$2,559/sqft |
Source: LINK #223477 Report a problem | ||
| 1/2/2022 | Contingent | $5,152,000$2,559/sqft |
Source: MLS PIN #72929922 Report a problem | ||
| 12/29/2021 | Listed for sale | $5,152,000$2,559/sqft |
Source: MLS PIN #72929922 Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | $60,384 +15.7% | $5,214,500 +8.9% |
| 2024 | $52,179 +2.6% | $4,787,100 +1.1% |
| 2023 | $50,875 +7.9% | $4,737,000 +9.3% |
| 2022 | $47,142 +4% | $4,332,900 +2% |
| 2021 | $45,325 | $4,247,900 |
Find assessor info on the county website
Neighborhood: South Boston
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Nearby schools
GreatSchools rating
- 3/10James F. Condon SchoolGrades: PK-8Distance: 1 mi
- 3/10Quincy Upper SchoolGrades: 6-12Distance: 1.1 mi
- 8/10Josiah Quincy Elementary SchoolGrades: PK-5Distance: 1.1 mi
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Estimated market value
$4,947,500
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Estimated market value
$4,947,500
- Massachusetts
- Suffolk County
- Boston
- 02210
- South Boston
- 133 Seaport Blvd Unit Penthouse 3a
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