The Lydon 401 Beacon Street, Boston, MA 02115
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$18,500,000
5 Beds
6 Baths
6132 SQFT
Acres: N/A
$4,525 HOA

Property Description

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.

Property Details tap to expand

Amenities

  • Amenities: Bike Path, Conservation Area, Highway Access, House of Worship, Medical Facility, Park, Public School, Public Transportation, Shopping, Swimming Pool, T-Station, University, Walk/Jog Trails
  • Association Fee Includes: Elevator, Exterior Maintenance, Landscaping, Master Insurance, Refuse Removal, Sewer, Snow Removal, Water

Kitchen, Dining, and Appliances

  • Kitchen Dimensions: 21X15
  • Countertops - Stone/Granite/Solid, Fireplace, Flooring - Hardwood, Gas Stove, Kitchen Island, Open Floor Plan, Pantry, Recessed Lighting
  • Dishwasher, Dryer, Microwave, Range, Refrigerator, Refrigerator - Wine Storage, Vent Hood, Wall Oven, Washer
  • Dining Room Dimensions: 17X15
  • Dining Room Features: Fireplace, Flooring - Hardwood, Open Floor Plan, Recessed Lighting

Bathrooms

  • Full Baths: 4
  • Half Baths 2
  • Master Bath: 1
  • Bathroom 1 Dimensions: 16X13
  • Bathroom 1 Features: Bathroom - Double Vanity/Sink, Bathroom - Full, Bathroom - With Shower Stall, Countertops - Stone/Granite/Solid, Flooring - Stone/Ceramic Tile, Recessed Lighting
  • Bathroom 2 Dimensions: 12X7
  • Bathroom 2 Features: Bathroom - Full, Flooring - Stone/Ceramic Tile
  • Bathroom 3 Dimensions: 5X6
  • Bathroom 3 Features: Bathroom - Half

Bedrooms

  • Bedrooms: 5
  • Master Bedroom Dimensions: 20X18
  • Master Bedroom Features: Bathroom - Full, Closet, Closet - Walk-in, Closet/Cabinets - Custom Built, Fireplace, Flooring - Hardwood, Recessed Lighting, Window Seat
  • Bedroom 2 Dimensions: 12X16
  • Master Bedroom Features: Bathroom - Full, Closet - Walk-in, Flooring - Hardwood
  • Bedroom 3 Dimensions: 13X14
  • Master Bedroom Features: Bathroom - Full, Closet, Flooring - Hardwood

Other Rooms

  • Total Rooms: 12
  • Living Room Dimensions: 22X24
  • Living Room Features: Flooring - Hardwood, Open Floor Plan, Recessed Lighting
  • Family Room Dimensions: 21X13
  • Family Room Features: Closet/Cabinets - Custom Built, Fireplace, Flooring - Hardwood, Recessed Lighting, Wet bar

Utilities

  • Heating: Central Heat, Forced Air, Gas
  • Cooling: Central Air
  • Electric Info: Circuit Breakers
  • Utility Connections: Washer Hookup, for Electric Dryer, for Gas Range
  • Water: City/Town Water
  • Sewer: City/Town Sewer

Unit Features

  • Square Feet: 6132
  • Unit Building: PH
  • Unit Level: 5
  • Interior Features: Elevator, Wetbar
  • Security: Intercom
  • Floors: 3
  • Pets Allowed: No
  • Fireplaces: 3
  • Laundry Features: In Unit
  • Accessability Features: Unknown

Condo Complex Information

  • Condo Name: The Lydon
  • Condo Type: Condo
  • Complex Complete: Yes
  • Number of Units: 6
  • Elevator: Yes
  • Condo Association: U
  • HOA Fee: $4,525
  • Fee Interval: Monthly
  • Management: Professional - Off Site

Construction

  • Year Built: 1890
  • Style: Mid-Rise
  • Construction Type: Brick, Stone/Concrete
  • Roof Material: Rubber
  • Flooring Type: Hardwood, Tile
  • Lead Paint: Unknown
  • Warranty: No

Garage & Parking

  • Garage Parking: Garage Door Opener, Under
  • Garage Spaces: 3
  • Parking Features: Exclusive Parking
  • Parking Spaces: 3

Exterior & Grounds

  • Exterior Features: City View(s), Deck - Roof, Decorative Lighting, Hot Tub/Spa
  • Pool: No

Other Information

  • MLS ID# 73516362
  • Last Updated: 05/11/26
  • Documents on File: Floor Plans

Property History tap to expand

Date Event Price Price/Sq Ft Source
05/11/2026New$18,500,000$3,017MLSPIN
06/28/2024Sold$4,600,000$1,599MLSPIN
05/22/2024Under Agreement$4,950,000$1,721MLSPIN
05/08/2024Contingent$4,950,000$1,721MLSPIN
01/12/2024Active$4,950,000$1,721MLSPIN
01/08/2024New$4,950,000$1,721MLSPIN
08/06/2023Sold$1,100,000$1,253MLSPIN
06/27/2023Under Agreement$1,099,000$1,252MLSPIN
06/03/2023Active$1,099,000$1,252MLSPIN
05/30/2023Price Change$1,099,000$1,252MLSPIN
04/15/2023Active$1,175,000$1,338MLSPIN
04/11/2023New$1,175,000$1,338MLSPIN

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Seller's Representative: Collin Sullivan, William Raveis R.E. & Home Services
Sub Agent Compensation: n/a
Buyer Agent Compensation: n/a
Facilitator Compensation: n/a
Compensation Based On: n/a
Sub-Agency Relationship Offered: No

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MLS PIN data last updated at 2026-05-11 17:46:00