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21 Walnut # M, Boston MA 02108

Boston, MA 02108 • Beacon Hill
$1,800,000
Est. $11,710/month
3
Beds
2
Baths
1,038
Sq Ft
$1,734
Price/Sq Ft
0.02
Acres
1875
Year Built
16 hours 11 minutes
Time on Market
Active Open House Listed Jul 14, 2026 • MLS# 73549276 Copied! • Updated Jul 14, 2026

Open House Schedule

19
Jul
Sunday, July 19
1:00 PM - 2:30 PM EDT
16
Jul
Thursday, July 16
3:30 PM - 5:00 PM EDT

About this home

Just off iconic Chestnut Street, this exceptional Beacon Hill maisonette offers the rare combination of a private entrance, lush landscaped garden, and secluded patio in the coveted South Slope. Rich in architectural detail and filled with natural light from abundant windows and skylights, this elegant duplex lives like a private townhouse. The fireplaced living room opens to the private terrace, while the beautifully updated kitchen features stone countertops, custom cabinetry, and stainless appliances. A spacious den overlooking the garden provides an ideal home office or dining area. Upstairs are two generous skylit bedrooms, including a tranquil primary suite with large closets and a marble bath with radiant heated floors. Hardwood floors, Miele washer/dryer, air conditioning, and deeded storage complete this rare offering, just moments from Boston Common, the Public Garden, the Charles River,Esplanade and all and restaurants along nearby Charles St and the Back Bay.

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Property History

Property Timeline

🏠
Listed for Sale
Jul 14, 2026
$1,800,000
Original listing
Agent: Rebecca Davis Tulman and Leslie Singleton Adam Office: Gibson Sotheby's International Realty

Tax History

Year Taxes Assessment
2025 $16,885 $1,458,100

Financial Details

Annual Property Tax
$16,885
Tax Year 2025
HOA Fee
$1,001
Monthly
Assessed Value
$1,458,100

Facts & Features

Home Facts

Type Residential
Style Condominium
Year Built 1875
Living Area 1,038 sq ft
Lot Size 0.02 acres
Bedrooms 3
Full Baths 2
Total Rooms 5

Interior

Heating Baseboard
Cooling Heat Pump
Flooring Flooring - Stone/ceramic Tile
Appliances None
Fireplace Living Room
Fireplaces 1
Basement N
Laundry In Unit
Features Closet, Entrance Foyer

Exterior

Construction Brick
Architecture None
Roof None
Features Courtyard, Patio - Enclosed, Garden
Pool None
Spa None
Fencing Security
Patio/Porch Patio - Enclosed
Features On Street
Electric 110 Volts
Water Public
Sewer Public Sewer
Gas None
Other None
Annual Tax $16,885
Assessed Value $1,458,100

HOA & Community

HOA Fee $1,001 Monthly
Fee Includes Heat, Water, Sewer, Insurance, Snow Removal
Amenities Hot Water
Optional Fee Includes None
Pets Yes w/ Restrictions
Seller Disclosures None
Possession None
Accepted Financing None
Structure Type ["Townhouse"]
Unit/Building M
Sq Ft Source Public Record
Sq Ft Disclosures Front Courtyard shared with adjacent condo, courtyard at rear is private to this unit.
Documents Floor Plans (1)
County Suffolk

Property Overview

Property Type
Condominium
Listing Type
For Sale
Year Built
1875
Bedrooms
3
Full Bathrooms
2
Living Area
1,038 sq ft
Total Rooms
5
Stories
2
Entry Level
1

Room Details

First Floor

Dining Room
11 x 14
Kitchen
11 x 15
Flooring - Stone/Ceramic Tile
Living Room
12 x 18
Flooring - Hardwood, French Doors, Exterior Access

Second Floor

Bathroom1
9 x 6
Bathroom - Full
Bathroom2
6 x 5
Bathroom - Full, Bathroom - With Shower Stall
Bedroom2
9 x 13
Skylight, Closet, Flooring - Hardwood, Window Seat
Master Bedroom
14 x 11
Skylight, Closet, Flooring - Hardwood

Other Floor

Bedroom5
Bedroom4
Bedroom3
Bathroom3
Office
Family Room
Master Bathroom
Yes

Interior Features

Flooring: Flooring - Stone/Ceramic Tile
Appliances:
Interior Features: Closet, Entrance Foyer
Windows:
Basement: N
Laundry: In Unit
Security: Intercom

Construction & Materials

Year Built: 1875
Structure Type: Townhouse
Exterior Materials: Brick
Roof:
Foundation:
Stories: 2

Heating, Cooling & Utilities

Heating: Baseboard
Cooling: Heat Pump
Cooling Zones: 3
Hot Water:
Water Source: Public
Sewer: Public Sewer
Energy Features:

Exterior & Lot

Exterior Features: Courtyard, Patio - Enclosed, Garden
Patio & Porch: Patio - Enclosed
Fencing: Security
Other Structures:
Lot Features:
Road Surface:

Parking & Garage

Parking Features: On Street

Special Features

Fireplaces: 1
Fireplace Type: Living Room
Community Amenities: Public Transportation, Shopping, Tennis Court(s), Park, Walk/Jog Trails, Medical Facility, Bike Path, Conservation Area, Highway Access, T-Station

Nearby Schools

School information not available for this location.

Monthly Payment Calculator

Monthly Payment
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Principal, interest, taxes & insurance
Loan Amount
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After down payment
Total Interest
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Over life of loan
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Including down payment
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Down: $0
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Monthly Payment Breakdown

Principal & Interest $0
Property Tax $1,407
Homeowners Insurance $200
HOA Fee $1,001/mo
PMI (if <20% down) $0

Loan Summary

Total of 360 payments $0
Total principal paid $0
Total interest paid $0

Rate Impact

-0.5% Rate
$0/mo
Save $0/mo
Current Rate
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+0.5% Rate
$0/mo
Cost $0/mo

Payment Over Time

Interest
Principal
Year 1
95% Interest
Year 15
50/50
Year 30
95% Principal
* Estimates only. Actual payments may vary. Consult with a lender for accurate figures.

Location

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Neighborhood

Beacon Hill

21 Walnut # M, Boston MA 02108

Boston, MA 02108

Listing Information

Listing Agent Rebecca Davis Tulman and Leslie Singleton Adam
Listing Office Gibson Sotheby's International Realty
Office Phone 857-310-5632
Agent MLS ID TM348767
Office MLS ID AN7429
Listing Data Updated Jul 14, 2026 11:10 AM EDT
Listing information is deemed reliable but not guaranteed. Data provided by MLS Property Information Network, Inc. All information should be independently verified.

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Steven Novak
Steven Novak
BMN Boston Real Estate
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BMN Boston Real Estate

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