For sale

$18,500,000

401 Beacon St, Boston, MA 02115

5beds

6,132sqft

Get pre-qualified

Condominium

Built in 1890

-- sqft lot

$18,751,500 Zestimate^®

$3,017/sqft

$4,525/mo HOA

What's special

Primary suite with fireplacePrivate internal stairGrand duplex layoutSuburban-scale kitchenDedicated office suiteFlexible layout

This one-of-one Back Bay penthouse presents a rare combination of scale, privacy, and design. Spanning the top two floors of a corner, boutique building, 6,132 SF is framed by 38 windows on three exposures with sweeping Charles River, skyline, and sunset views.Designed by Eric Roseff, the residence offers direct elevator access from three garage spaces, a grand duplex layout, and private internal stair. A suburban-scale kitchen anchors expansive living spaces seldom found in the city.The rooftop retreat—featuring pool, spa, fire pit, outdoor kitchen, and landscaped green roof—offers exceptional privacy with no adjacent terraces. A primary suite with fireplace, dedicated office suite, and flexible layout complete this exceptional, trophy-caliber offering.

49 days

1,810

78

Loading...

Facts & features

Interior

Bedrooms & bathrooms

Bedrooms: 5
Bathrooms: 6
Full bathrooms: 4
1/2 bathrooms: 2

Primary bedroom

Features: Bathroom - Full, Walk-In Closet(s), Closet, Closet/Cabinets - Custom Built, Flooring - Hardwood, Recessed Lighting, Window Seat
Area: 360
Dimensions: 20 x 18

Bedroom 2

Features: Bathroom - Full, Walk-In Closet(s), Flooring - Hardwood
Area: 192
Dimensions: 12 x 16

Bedroom 3

Features: Bathroom - Full, Closet, Flooring - Hardwood
Area: 182
Dimensions: 13 x 14

Bedroom 4

Features: Flooring - Hardwood
Area: 225
Dimensions: 15 x 15

Primary bathroom

Features: Yes

Bathroom 1

Features: Bathroom - Full, Bathroom - Double Vanity/Sink, Bathroom - With Shower Stall, Flooring - Stone/Ceramic Tile, Countertops - Stone/Granite/Solid, Recessed Lighting
Area: 208
Dimensions: 16 x 13

Bathroom 2

Features: Bathroom - Full, Flooring - Stone/Ceramic Tile
Area: 84
Dimensions: 12 x 7

Bathroom 3

Features: Bathroom - Half
Area: 30
Dimensions: 5 x 6

Dining room

Features: Flooring - Hardwood, Open Floorplan, Recessed Lighting
Area: 255
Dimensions: 17 x 15

Family room

Features: Closet/Cabinets - Custom Built, Flooring - Hardwood, Wet Bar, Recessed Lighting
Area: 273
Dimensions: 21 x 13

Kitchen

Features: Flooring - Hardwood, Pantry, Countertops - Stone/Granite/Solid, Kitchen Island, Open Floorplan, Recessed Lighting, Gas Stove
Area: 315
Dimensions: 21 x 15

Living room

Features: Flooring - Hardwood, Open Floorplan, Recessed Lighting
Area: 528
Dimensions: 22 x 24

Office

Features: Closet/Cabinets - Custom Built, Flooring - Hardwood, Recessed Lighting
Area: 225
Dimensions: 15 x 15

Heating

Central, Forced Air, Natural Gas

Cooling

Central Air

Appliances

Included: Oven, Dishwasher, Microwave, Range, Refrigerator, Washer, Dryer, Wine Refrigerator, Range Hood
Laundry: In Unit, Electric Dryer Hookup, Washer Hookup

Features

Recessed Lighting, Closet/Cabinets - Custom Built, Wet bar, Bathroom - Full, Bathroom - Double Vanity/Sink, Bathroom - With Tub & Shower, Exercise Room, Office, Sitting Room, Game Room, Mud Room, Bathroom, Wet Bar, Elevator
Flooring: Tile, Hardwood, Flooring - Hardwood, Flooring - Stone/Ceramic Tile
Has basement: No
Number of fireplaces: 3
Fireplace features: Dining Room, Family Room, Kitchen, Master Bedroom
Common walls with other units/homes: No One Above

Interior area

Total structure area: 6,132
Total interior livable area: 6,132 sqft
Finished area above ground: 6,132

Video & virtual tour

View virtual tour

Property

Parking

Total spaces: 3
Parking features: Under, Garage Door Opener, Exclusive Parking
Attached garage spaces: 3

Features

Patio & porch: Deck - Roof
Exterior features: Deck - Roof, Hot Tub/Spa, Decorative Lighting, City View(s)
Has spa: Yes
Spa features: Hot Tub/Spa
Has view: Yes
View description: City, Water, River
Has water view: Yes
Water view: River,Water

Details

Parcel number: 5175351
Zoning: Res

Construction

Type & style

Home type: Condo
Property subtype: Condominium
Attached to another structure: Yes

Materials

Brick, Stone
Roof: Rubber

Condition

Year built: 1890

Utilities & green energy

Electric: Circuit Breakers
Sewer: Public Sewer
Water: Public
Utilities for property: for Gas Range, for Electric Dryer, Washer Hookup

Community & HOA

Community

Features: Public Transportation, Shopping, Pool, Park, Walk/Jog Trails, Medical Facility, Bike Path, Conservation Area, Highway Access, House of Worship, Public School, T-Station, University
Security: Intercom

HOA

Amenities included: Elevator(s)
Services included: Water, Sewer, Insurance, Maintenance Structure, Maintenance Grounds, Snow Removal, Trash
HOA fee: $4,525 monthly

Location

Region: Boston

Financial & listing details

Price per square foot: $3,017/sqft
Tax assessed value: $14,887,300
Annual tax amount: $172,397
Date on market: 5/11/2026

Estimated market value

$18,751,500

$15.56M - $22.69M

$7,641/mo

Price history

Date	Event	Price
5/11/2026	Listed for sale	$18,500,000+29.4%$3,017/sqft
Source: MLS PIN #73516362 Report a problem
6/27/2019	Sold	$14,300,000-4.7%$2,332/sqft
Source: LINK #180567 Report a problem
10/20/2016	Sold	$15,000,000$2,446/sqft
Source: Agent Provided Report a problem

Public tax history

Year	Property taxes	Tax assessment
2025	$172,395 +7.2%	$14,887,300 +0.9%
2024	$160,858 +6.6%	$14,757,600 +5%
2023	$150,950 +0.7%	$14,054,900 +2%
2022	$149,919 +2%	$13,779,300
2021	$147,025	$13,779,300

Find assessor info on the county website

Monthly payment

Est. payment

Payment breakdown

Explore the cost of this home by adjusting the details. Changes won't be saved.

All calculations are estimates and provided by Zillow, Inc. for informational purposes only. Actual amounts may vary.

HOA fees may include property taxes on listings classified as Co-Ops. Contact the listing agent and/or owner for fee details.

Mortgage interest rates are dependent on a number of factors, including credit score, down payment, and repayment length. Interest rate data provided by Zillow Group Marketplace, Inc. as of 1/1/1970 from various mortgage lenders with which we have lead or other similar arrangements; the Estimated Payment is an average of those rates.

See how much you could borrow to make a competitive offer.

Get pre-qualified