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$8,750,000

  • For Sale
  • Active
  • Single Family
  • 5 Beds
  • 4 Full Baths
  • 2 Partial Baths
  • 6,082 Sq. Ft.
  • 0.03 Acres
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Grand and wide South Slope single family townhouse with elevator to every floor! This gracious ultra wide Beacon Hill home has been fully renovated and upgraded with many recent capital improvements to systems and structure. Offering 5+ bedrooms, 4 full and 2 half baths, this wonderful home has an excellent scale with enormous floor to ceiling windows, soaring ceiling heights on every floor, a level and wide staircase and a large elevator. A parlor level eat in kitchen has ample storage, top-of-the-line appliances and access to a deck and an enclosed garden. Opposite the eat-in kitchen is a large formal dining room with views of Walnut St and a fireplace. A grand "Piano Nobile" is ideal for entertaining with its enormous scale, oversized windows and gas fireplace. A primary suite has ample closet space and an attached marble bath. 4 guest suites share 3 full baths and a full staircase leads to a captivating roof top deck with sensational views of Boston and The Charles River!

Full Property Details for 9 Walnut St

General

  • Price: $8,750,000
  • Taxes: $101,902 (2026)
  • Status: Active
  • Type: Single Family
  • Source: MLSPin
  • MLS ID: 73430657
  • Updated: 1/12/2026
  • Added to Site: 147 day(s) ago

Interior

  • Number of Rooms: 12
  • Interior Features: Elevator
  • Fireplace: Yes
  • Number of Fireplaces: 6
  • Appliances: Range, Oven, Dishwasher, Disposal, Refrigerator, Freezer, Washer, Dryer
  • Flooring: Wood, Carpet

Rooms

Bathrooms

  • Total Bathrooms: 6
  • Full Bathrooms: 4
  • Half Bathrooms: 2
  • Main - Full Baths: 4
  • Main - 1/2 Baths: 2

Bedrooms

  • Total Bedrooms: 5
  • Primary Bedroom: Yes

Exterior

  • Exterior Features: Deck - Roof, Patio, City View(s), Other

Location

  • Area: Beacon Hill
  • County: Suffolk
  • Driving Directions: Walnut Street Between Chestnut Street & Beacon Street

Heating & Cooling

  • Air Conditioning: Yes
  • Cooling Type: Central Air
  • Heating Type: Forced Air
  • Heating Fuel: Forced Air

Utilities

  • Sewer: Public Sewer
  • Water: Public

Structural Information

  • Architectural Style: Federal
  • Exterior Const.: Frame, Brick
  • Roof: Slate, Rubber, Other
  • Square Feet: 6,082
  • Sq. Ft. Source: Other
  • Year Built: 1899

Lot Features

  • Lot Size (Acres): 0.03
  • Lot Dimensions: .03
  • Lot Features: Level, Other

Financial Considerations

  • Price Per Sq. Ft.: $1,438.67
  • Tax Amount: $101,902
  • Tax Year: 2026

Disclosures and Reports

  • Property ID: W:05 P:01478 S:000, 3356438
Buyer's Brokerage Compensation: Contact Listing Agent
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— 9 Walnut St —

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Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

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Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

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Schools serving 9 Walnut St

School District:Boston School District
Disclaimer: School attendance boundaries provided by Pitney Bowes and are for reference only. Contact the school directly to verify enrollment eligibility.

Price & Sales History for 9 Walnut St Get Price Alerts and Save Property

Date
Details
Price
Change
Source
9/15/2025
Listed
$8,750,000
68.27%
MLS
1/06/2005
Sold
$5,200,000
—
Public Record
Get Price Alerts and Save Property
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

Tax History for 9 Walnut St

Year
Property Taxes
Change
Tax Assessment
Change
2025
$91,504
7%
$7,901,900
1%
2024
$85,695
1%
$7,861,900
—
2023
$84,437
4%
$7,861,900
5%
2022
$81,464
4%
$7,487,500
2%
2021
$78,325
4%
$7,340,700
3%
2020
$75,506
5%
$7,150,200
5%
2019
$71,748
13%
$6,807,200
13%
2018
$63,372
4%
$6,046,900
5%
2017
$60,987
—
$5,758,900
4%
2016
$60,961
2%
$5,541,900
12%
2015
$60,037
1%
$4,957,600
5%
2014
$59,396
—
$4,721,500
—
View All
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

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9 Walnut St, Boston, MA 02108 (MLS# 73430657) is a Single Family property with 5 bedrooms, 4 full bathrooms and 2 partial bathrooms. 9 Walnut St is currently listed for $8,750,000 and was received on September 15, 2025. This property is listed by Michael Harper from our Boston-Back Bay Office.Want to learn more about 9 Walnut St? Do you have questions about finding other Single Family real estate for sale in Boston? You can browse all Boston real estate or contact a Coldwell Banker agent to request more information.

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