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21 Custom House St
Boston, MA 02110
Office Property for Lease · 2,608 SF

Sublease Highlights

  • Historically significant building redesigned for modern professional use, offering a distinctive office experience.
  • Amenities include 24-hour access, security services, and multiple carrier drop-off points for operational ease
  • Surrounded by a vibrant hub of finance, legal, and tech firms, as well as premium dining and retail options.
  • Situated in the Financial District within walking distance to the Aquarium T station and Downtown Crossing transit connections.
  • On-site covered parking and loading dock support both convenience and functionality rarely found in downtown Boston properties

Property Overview

21 Custom House Street is a boutique building situated in the highly amenitized Financial District neighborhood, just steps away from the Rowes Wharf Commuter Boat. The building features a recently renovated lobby, on-site parking, and on-site management. The building is located 0.5 miles from South Station, 1 mile from North Station, and is walkable to all major MBTA subway stations including the Blue, Red, Green, and Orange lines.

  • Bus Line
  • Commuter Rail
  • Metro/Subway
  • Signage
  • Waterfront
  • Wheelchair Accessible
  • Kitchen
  • Air Conditioning
  • Smoke Detector

Property Facts

Building Type
Office
Year Built/Renovated
1987/2016
LoopNet Rating
4 Star
Building Height
10 Stories
Building Size
104,000 SF
Building Class
A
Typical Floor Size
8,743 SF
Unfinished Ceiling Height
12’
Parking
Surface Parking
40 Covered Parking Spaces
  • Listing ID: 40758027

  • Date on Market: 6/2/2026

  • Last Updated:

  • Address: 21 Custom House St, Boston, MA 02110

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