Listing Tools

Inviting. Spacious. Rarely available.This 3-bed & 3-bath penthouse duplex offers 1,646 sq ft of thoughtfully designed living space in the heart of Boston's South End-where true 3 bedroom homes remain in short supply.The first level is dedicated to rest and privacy, featuring a spacious primary suite with a walk-in closet and en-suite full bath, a generously sized second bedroom, and a versatile 3rd bedroom-ideal for guests or a home office.Upstairs, the main living level is designed for both comfort and entertaining, with an open living & dining area highlighted by exposed brick, high ceilings, skylights, and abundant natural light. The modern kitchen features stainless steel appliances, while a wood-burning stove adds warmth and character throughout. Additional features include central air, in-unit W&D, and a private deck overlooking lovely Worcester Square. The living area flows seamlessly to the deck, creating an ideal setting for entertaining. Pet friendly.

More Info

Basic Information

  • Bedrooms3
  • Mls StatusActive
  • Bathroom3
  • Parcel Number W:08 P:01444 S:006,3391870
  • Unit Number3

Tax Information

  • Tax Assessed Value $1,445,600
  • Tax Year 2025
  • Taxes$16,740

Parking

  • Parking Spaces
  • Open Parking YN Yes
  • Parking Features On Street

Rooms

  • Bathrooms Total Decimal 3
  • Full Bath3

Basic Information

  • List Price$1,475,000
  • MLS Number73503032
  • Modification Date05/12/2026
  • Property SubTypeCondominium
  • Virtual TourView Tour

Location

  • NeighborhoodSouth End
  • SubdivisionSouth End
  • Address1666 Washington Street
  • Building Number1666
  • CountySuffolk
  • StateMA
  • StreetWashington Street
  • TownBoston
  • Zip02118

Building

  • BasementN
  • Building Area Units Square Feet
  • Common Walls No One Above
  • Construction Materials Stone
  • Entry Level 3
  • Patio And Porch Features Deck
  • Rooms4
  • Stories2
  • Utilities For Gas Range
  • Year Built1899
  • Year Built Details Approximate
  • Year Built Source Public Records

Property

  • Acreage0.04

Interior

  • Flooring Hardwood

Exterior

  • Exterior Features Deck

Utilities

  • Cooling Central Air
  • Cooling YN Yes
  • Heat SystemYes
  • Heating Forced Air
  • Sewer Public Sewer
  • Water Source Public

Property Information

  • Square Feet1,646
  • Building Area Source Owner
  • Living Area 1,646
  • Lot Size Square Feet 1,646
  • Lot Size Units Acres
  • Structure Type Townhouse

Amenities

  • Amenities
    • Highway Access
    • House of Worship
    • Medical Facility
    • Park
    • Public School
    • Public Transportation
    • Shopping
    • T-Station
    • Tennis Court(s)
  • Appliances IncludedRange, Dishwasher, Disposal, Refrigerator, Freezer, Washer, Dryer
  • Other AmenitiesTennis
  • PetsYes
  • Security Features Intercom

Legal

  • ZoningCD

Other

  • Association Fee $300
  • Association Fee Frequency Monthly
  • Association Fee Includes Water, Sewer, Insurance, Maintenance Structure, Maintenance Grounds
  • Date Listed04/16/2026
  • Farm Land Area Units Square Feet
  • View Count3

Map Location

Driving Directions

Listed by Moshe Elmekias of Gibson Sotheby's International Realty

Hi there! How can we help you?

Contact us using the form below or give us a call.

Send Us A Message:

I agree to receive marketing and customer service calls and text messages from Castles Unlimited. To opt out, you can reply 'stop' at any time or click the unsubscribe link in the emails. Consent is not a condition of purchase. Msg/data rates may apply. Msg frequency varies. Privacy Policy.

Do not fill in this field:

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Hi there! How can we help you?

Contact us using the form below or give us a call.

Send Us A Message:

Do not fill in this field:

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Hi there! How can we help you?

Contact us using the form below or give us a call.

Send Us A Message:

Do not fill in this field:

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Do not fill in this field:

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Do not fill in this field:

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Do not fill in this field:

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

$

Do not fill in this field:

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.