• Browse Offices
  • Saved
  • Tour List
  • Move-in
Email us:info@tandem.space
CA DRE # 02234104NY DRE # 10311210503

Company

  • About

  • Blog

  • Contact Us

  • Terms of Service

  • Privacy Policy

  • CA Disclosures

Resources

  • By State

  • Top Offices

Explore

  • Explore Spaces

Promote Your Space

  • For Landlords

  • For Brokers

  • For Tenants

© 2026 Tandem Space, Inc.
All rights reserved.

Modern Bright Office in Downtown Boston

20 Custom House St, 8th Floor, Boston, MA, 02110-3513
New

Modern Bright Office in Downtown Boston

20 Custom House St, 8th Floor, Boston, MA, 02110-3513
New
Space Thumbnail
Space Thumbnail
Image #2
Image #3
Image #4
Image #5
Image #6
Image #7
Image #8
1 of 8
space image 1
space image 2
~40 desks
5,548 sqft

Workspace options

Fully private

A fully-customizable office suite with secure access

See description for lease details

About the space

Welcome to a bright and inviting office space in the heart of Downtown Boston. This modern workspace offers ample natural light and features a well-equipped kitchen with a refrigerator and dishwasher, making it ideal for teams seeking a comfortable and productive environment. With a meeting room equipped with desks, and chairs, the layout is both functional and flexible, catering to various business needs.

Includes access to Custom House Fitness Center & onsite amenity of Cacao, a specialty coffee & chocolate shop.

NEIGHBORHOOD Downtown Boston is a bustling hub known for its historic charm and vibrant atmosphere. The area is easily accessible with nearby public transit options including the South Station and Aquarium T stops. Enjoy a variety of dining experiences, from casual eateries like Chipotle to fine dining at Legal Sea Foods. The neighborhood exudes a dynamic and professional vibe, attracting businesses and tourists alike with its mix of history, culture, and commerce.

MARKETED BY Melanie Cersosimo, Newmark David Martel, Newmark

What's included

Badge Access
Chairs
Controlled Access
Guest Access
Natural Light
Proximity to Transit
24-hour access
Bathrooms
Elevator
Fitness Center
Glass Meeting Rooms
Kitchen

Any questions?

If you have any questions about the space, lease terms, or anything else, you can send a direct message.

Also includes Tandem concierge

We'll help you with the details at no extra cost:

Legal
Insurance
Furniture
Janitorial
Utilities
Internet
Learn More

Tour the space

Floor Plans

Space image 1

Location

Fully Private
Est: $26,816/mo
(estimated term: 4+ years)
Est: $26,816/mo
(estimated term: 4+ years)
Pricing is an estimate only

Tell us what spaces you're interested in and we'll handle everything from setting up tours to making an offer and moving in. We've helped 100s of teams lease space in the past few months.

Allegra C
Allegra C. | Tandem Expert
or
Fully Private
Est: $26,816/mo
(estimated term: 4+ years)
Est: $26,816/mo
(estimated term: 4+ years)
Pricing is an estimate only

Tell us what spaces you're interested in and we'll handle everything from setting up tours to making an offer and moving in. We've helped 100s of teams lease space in the past few months.

Allegra C
Allegra C. | Tandem Expert
or