Condominium at 6 Union Park # 3, Boston MA 02118
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$3,950,000

6 Union Park # 3, Boston MA 02118
Boston, MA 02118
Listed by Jeffrey Hamilton
Bedrooms
3
Bathrooms
2.5
Living area
2,340 sqft
Year built
1890

About this home

A Union Park Dream! Soaring 15' cathedral ceilings and over 21' of interior width deliver rare volume in the South End. Perched above Union Park, this 2,340 SF penthouse duplex is defined by light, scale, and thoughtful design. The main level features a luxurious kitchen with premium appliances and sleek finishes, opening to an expansive living and dining area that easily accommodates a 10-seat table. Exposed beams highlight the dramatic ceiling height, while a gas fireplace adds warmth. West-facing window walls flood the home with natural light. A lofted den with a custom wet bar leads to a private roof deck, ideal for entertaining or relaxing. The lower level offers a park-facing primary suite with oversized spa bath, steam shower, and soaking tub, plus two additional bedrooms. Two deeded parking spaces, including one garage.

Highlights

Fireplace

Property details

MLS
MLS Property Information Network
MLS #
73508645
Property type
Condominium
Subdivision
N/A
Status
Active
Days on market
179
On market date
April 28, 2026
Stories
2
Total bathrooms
2.5
Garage spaces
1
Parking spaces
2
Lot size
N/A
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Nearby schools

Within 10 miles. School directory data from the National Center for Education Statistics (NCES), accessed via the Urban Institute Education Data API. Local Score is calculated by INNOVATE Real Estate; where a state rating is shown, it comes from that state's own official school report card.

Elementary
Blackstone
0.11 mi away · Grades -1-5
Nearest school -- attendance-zone data not available here
5.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
455
Student:teacher ratio
8.4:1
District
Boston
MiddleCharter
UP Academy Charter School of Boston
1.2 mi away · Grades 6-8
Nearest school -- attendance-zone data not available here
5.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
317
Student:teacher ratio
10.2:1
District
UP Academy Charter School of Boston (District)
High
Quincy Upper School
0.44 mi away · Grades 6-12
Nearest school -- attendance-zone data not available here
4.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
553
Student:teacher ratio
13.5:1
District
Boston

Walkability

Blended score for Boston's center, calculated by INNOVATE Real Estate from two sources: the EPA's National Walkability Index (street network, transit, land-use mix) and Google Places amenity data (what's actually reachable on foot from this point). 60% EPA National Walkability Index + 40% nearby-amenity density (Google Places).

94
Highly walkable
out of 100
EPA National Walkability Index
18.0 / 20 -- Most walkable
Google Places amenity density
100 / 100
Restaurants & cafes20
Grocery stores20
Parks20
Schools20
Transit stops20
Pharmacies20

Market position

How this listing compares to current activity in Boston, from live MLS data.

On the market 179 days -- 54 more days than Boston's current average of 125 days.
For reference, the median list price across 8,983 active listings in Boston right now is $80,000.

Mortgage calculator

Estimate only - actual rate and payment depend on your lender, credit, and loan program.

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Est. monthly payment
$23,937/mo
$790,000 down
$3,160,000 loan
Principal & interest$20,496
Property tax (est.)$3,292
Home insurance (est.)$150

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Data source: Listing information provided by MLS Property Information Network via Trestle/CoreLogic. Last updated May 5, 2026.

Information herein deemed reliable but not guaranteed; all measurements, school assignments, HOA fees, taxes, and feature lists are approximate and should be independently verified. Equal Housing Opportunity.