Condominium at 423 Beacon St # 2, Boston
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$4,500,000

423 Beacon St # 2
Boston, MA 02115
Listed by Hans Nagrath · Compass
Bedrooms
4
Bathrooms
3.5
Living area
2,539 sqft
Year built
1869

About this home

A Back Bay penthouse that lives like a townhouse. A private entry and a single flight of stairs bring you to the main level, and the primary suite is just one flight above, so day-to-day living stays on two floors. The top floor and a private roof deck are there whenever you want them. One of only two residences in a classic brownstone, with deeded parking. The main level is made for entertaining. A 21-foot living room opens to oversized bay windows over the tree-lined street, anchored by a gas fireplace in a warm wood surround with built-in shelving alongside. The dining room flows back to the kitchen, with custom cabinetry, a Wolf range, a Sub-Zero refrigerator and a generous center island made for gathering. One flight up, the primary floor is a true retreat: a bedroom with its own bay window, a dressing hall lined with built-in closets, and a five-piece marble bath with a tub and a separate shower. A second bedroom at the rear works beautifully as a guest room or office. The top floor adds two more bedrooms and two full baths, including a front bedroom with its own fireplace and wet bar that doubles as a media room or guest suite. Just above, the private roof deck, more than 300 square feet, takes in the Back Bay skyline and becomes an outdoor living room from spring through fall. Fully renovated, with 11-foot ceilings on the main and primary floors and 10-foot ceilings above, walnut-stained white oak floors, radiant heated bath floors, integrated sound, refined millwork, central air and in-unit laundry. Pet friendly, with Newbury Street and the Esplanade minutes away.

Highlights

Fireplace

Property details

MLS
MLS Property Information Network
MLS #
73598711
Property type
Condominium
Subdivision
N/A
Status
Active
Days on market
1
On market date
November 4, 2026
Stories
3
Total bathrooms
3.5
Garage spaces
N/A
Parking spaces
1
Lot size
0.06 acres
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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
Joseph J Hurley
0.96 mi away · Grades -1-8
Nearest school -- attendance-zone data not available here
3.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
351
Student:teacher ratio
16.0:1
District
Boston
Middle
James P Timilty Middle
1.45 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
205
Student:teacher ratio
8.2:1
District
Boston
High
Snowden International School at Copley
0.44 mi away · Grades 9-12
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
485
Student:teacher ratio
12.8:1
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).

84
Highly walkable
out of 100
EPA National Walkability Index
14.5 / 20 -- Above average 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 1 days -- 136 fewer days than Boston's current average of 137 days.
For reference, the median list price across 9,348 active listings in Boston right now is $65,000.

Mortgage calculator

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

Adjust tax / insurance estimates
Est. monthly payment
$27,250/mo
$900,000 down
$3,600,000 loan
Principal & interest$23,350
Property tax (est.)$3,750
Home insurance (est.)$150

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Data source: Listing information provided by MLS Property Information Network. Last updated 1 days ago.

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.