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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
4 hours 20 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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Recently Sold Nearby

Property History

Market Insights

19.4%
Price Range
1
Previous Sales

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
Previous Transaction - MLS #71805570
Full transaction history available when tracking began
🏷️
Previously Sold
Jun 1, 2015
$1,450,000
MLS #71805570

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
School District
Boston School District local
C-
🎓 Where Graduates Go Class of 2021
52% attend college
38% 4-Year 14% 2-Year 7% Out of State 7% Working
School Safety 2024-25
3.7% Above Average
3.2% Suspensions 0.3% In-School 0.5% Emergency
1.8% below state avg
E

Elementary Schools

10 schools
Advent School
0.3 mi
Grades K-06
Park Street School
0.3 mi
Grades K-07
The Learning Project
0.6 mi
Grades K-06
St. John Elementary School
0.8 mi
Grades PK-08
A
Eliot K-8 Innovation School
0.9 mi | #48 of 352 | Score: 57.2
Improved 2 spots from last year
-1.1 below state avg
784 students Diverse
Strong Attendance
Grades PK-08
Kingsley Montessori School
1.0 mi
Grades PK-06
D
Melvin H. King South End Academy
1.0 mi | #24 of 25 | Score: 20.2
Improved 363 spots from last year
-38.1 below state avg
125 students Diverse
Rising School Diverse Student Body
Grades PK-12
F
Blackstone Elementary School
1.2 mi | #809 of 824 | Score: 26.3
Improved 12 spots from last year
-31.9 below state avg
582 students Moderate
Grades PK-06
C
Harvard-Kent Elementary School
1.4 mi | #589 of 824 | Score: 41.5
Dropped 181 spots from last year
-16.7 below state avg
334 students Very Diverse
Diverse Student Body
Grades PK-06
A-
Warren-Prescott K-8 School
1.4 mi | #85 of 352 | Score: 51.3
Improved 4 spots from last year
-7 below state avg
507 students Diverse
Grades PK-08
M

Middle Schools

10 schools
Middle School Academy
1.9 mi
F
Higginson/Lewis K-8 School
2.8 mi | #349 of 352 | Score: 23.6
Improved 3 spots from last year
-34.6 below state avg
213 students Diverse
Grades 03-08
Nativity Prep School
3.1 mi
Grades 05-08
A
Uncommon Schools - Roxbury Preparatory Dorchester Campus Middle School
3.2 mi | #4 of 16 | Score: 41.9
Improved 187 spots from last year
-16.3 below state avg
1,126 students Diverse
Rising School College Ready Curriculum
Grades 05-08
Dearborn Middle School
3.6 mi
Mother Caroline Academy
3.6 mi
Grades 05-08
Epiphany School
4.5 mi
Grades 05-08
C
Ohrenberger School
7.9 mi | #265 of 352 | Score: 34.9
Improved 20 spots from last year
-23.3 below state avg
477 students Diverse
Rising School Diverse Student Body
Grades 03-08
Edwards Middle
1.5 mi
UP Academy
1.9 mi
H

High Schools

10 schools
C
Quincy Upper School
0.7 mi | #268 of 346 | Score: 44.6
Improved 4 spots from last year
-13.6 below state avg
557 students Very Diverse
12 sports • 208 athletes
High Graduation Rate Diverse Student Body
Grades 06-12
Newman School
0.9 mi
Grades 07-12
Cathedral High School
1.2 mi
9 sports • 430 athletes
Grades 07-12
D
Charlestown High School
1.6 mi | #322 of 346 | Score: 31.0
Improved 49 spots from last year
-27.2 below state avg
754 students Diverse
11 sports • 488 athletes
Early College Program Rising School
Grades 07-12
A-
O'Bryant School of Math & Science
2.2 mi | #90 of 346 | Score: 61.1
Improved 94 spots from last year
+2.9 above state avg
1,509 students Very Diverse
High Graduation Rate Rising School College Ready Curriculum Diverse Student Body
Grades 07-12
A+
Boston Latin School
2.3 mi | #19 of 346 | Score: 73.3
Improved 61 spots from last year
+15.1 above state avg
2,424 students Very Diverse
18 sports • 2,006 athletes
Strong AP Program High Graduation Rate Rising School Strong Athletics
Grades 07-12
C-
East Boston High School
2.3 mi | #305 of 346 | Score: 37.3
Improved 31 spots from last year
-20.9 below state avg
1,252 students Less Diverse
14 sports • 584 athletes
Early College Program Rising School
Grades 07-12
B
Dearborn STEM Academy
2.3 mi | #13 of 25 | Score: 31.7
Improved 356 spots from last year
-26.6 below state avg
565 students Diverse
10 sports • 242 athletes
Early College Program Rising School
Grades 07-12
C
Ruth Batson Academy
3.0 mi | #19 of 25 | Score: 27.6
Improved 346 spots from last year
-30.6 below state avg
604 students Diverse
8 sports • 128 athletes
Early College Program Rising School
Grades 07-12
A+
Boston Latin Academy
3.0 mi | #2 of 25 | Score: 63.9
Improved 214 spots from last year
+5.7 above state avg
1,693 students Very Diverse
17 sports • 1,298 athletes
High Graduation Rate Rising School Strong Athletics Diverse Student Body
Grades 07-12
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Monthly Payment Breakdown

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Property Tax $1,407
Homeowners Insurance $200
HOA Fee $1,001/mo
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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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