• 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.

Bright, Modern Office Space in Downtown

20 Custom House St, Partial 6th Floor, Boston, MA, 02110-3513
New

Bright, Modern Office Space in Downtown

20 Custom House St, Partial 6th Floor, Boston, MA, 02110-3513
New
Space Thumbnail
Space Thumbnail
Image #2
Image #3
Image #4
Image #5
Image #6
1 of 6
space image 1
space image 2
~20 desks
5 meeting rooms
4,620 sqft

Workspace options

Fully private

A fully-customizable office suite with secure access

See description for lease details

About the space

Step into this bright, vibrant office space filled with abundant natural light and thoughtfully designed modern amenities. The open, functional layout is crafted to support productivity and collaboration, featuring customizable layout accommodating focused teamwork. A convenient kitchen area adds comfort and ease to the workday, making the space both practical and inviting. Altogether, this office provides an energizing environment that’s perfectly suited for dynamic, forward-thinking teams.

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

NEIGHBORHOOD Downtown Boston is a bustling hub with a mix of historic charm and modern convenience. The office is conveniently located near the Aquarium and State Street subway stations, offering easy access to public transit. Enjoy a variety of dining options, from casual spots like Quincy Market to upscale restaurants along the waterfront. The neighborhood is lively and energetic, known for its blend of business, dining, and cultural attractions, perfect for professionals seeking a vibrant work environment.

MARKETED BY Melanie Cersosimo, Newmark David Martel, Newmark

What's included

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

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: $22,715/mo
(estimated term: 4+ years)
Est: $22,715/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: $22,715/mo
(estimated term: 4+ years)
Est: $22,715/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