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777 Congress St
Boston, MA 02210 Seaport

Rate Upon Request

Office For Lease  •  36,531+ SF

Property Details

  • Property Type Office
  • Year Built 2026
  • Total Building Size 646,969 SF
  • Tenancy Multiple
  • Building Class A
  • Zoning CBD
64 Transit Score
75 Walk Score

11 Spaces Available

Name Space Use Size Rent Details
2nd Floor Ste Office 36,531-55,599 SF Rate Upon Request 
36,531 sf of office/lab space available for lease.

  • Date available: Jul 2026
  • Lease term: Negotiable
  • Service type: Negotiable
  • Built out as: Research And Development
  • Space Type: New
  • In Contiguous block: 646,969 SF
3rd Floor Ste Office 37,000-72,730 SF Rate Upon Request 
72, 730sf of office/lab space available for lease.

  • Date available: Jul 2026
  • Lease term: Negotiable
  • Service type: Negotiable
  • Built out as: Research And Development
  • Space Type: New
  • In Contiguous block: 646,969 SF
4th Floor Ste Office 37,000-73,709 SF Rate Upon Request 
73,709sf of office/lab space available for lease.

  • Date available: Jul 2026
  • Lease term: Negotiable
  • Service type: Negotiable
  • Built out as: Research And Development
  • Space Type: New
  • In Contiguous block: 646,969 SF
5th Floor Ste Office 37,000-73,865 SF Rate Upon Request 
73,865sf of office/lab space available for lease.

  • Date available: Jul 2026
  • Lease term: Negotiable
  • Service type: Negotiable
  • Built out as: Research And Development
  • Space Type: New
  • In Contiguous block: 646,969 SF
6th Floor Ste Office 37,000-73,712 SF Rate Upon Request 
73,712sf of office/lab space available for lease.

  • Date available: Jul 2026
  • Lease term: Negotiable
  • Service type: Negotiable
  • Built out as: Research And Development
  • Space Type: New
  • In Contiguous block: 646,969 SF
7th Floor Ste Office 37,000-72,170 SF Rate Upon Request 
72,170sf of office/lab space available for lease.

  • Date available: Jul 2026
  • Lease term: Negotiable
  • Service type: Negotiable
  • Built out as: Research And Development
  • Space Type: New
  • In Contiguous block: 646,969 SF
8th Floor Ste Office 37,000-71,925 SF Rate Upon Request 
71,925sf of office/lab space available for lease.

  • Date available: Jul 2026
  • Lease term: Negotiable
  • Service type: Negotiable
  • Built out as: Research And Development
  • Space Type: New
  • In Contiguous block: 646,969 SF
9th Floor Ste Office 37,000-56,089 SF Rate Upon Request 
56,089sf of office/lab space available for lease.

  • Date available: Jul 2026
  • Lease term: Negotiable
  • Service type: Negotiable
  • Built out as: Research And Development
  • Space Type: New
  • In Contiguous block: 646,969 SF
10th Floor Ste Office 36,332 SF Rate Upon Request 
13,039sf of office/lab space available for lease.

  • Date available: Jul 2026
  • Lease term: Negotiable
  • Service type: Negotiable
  • Built out as: Research And Development
  • Space Type: New
  • In Contiguous block: 646,969 SF
11st Floor Ste Office 30,421 SF Rate Upon Request 
30,421sf of office/lab space available for lease.

  • Date available: Jul 2026
  • Lease term: Negotiable
  • Service type: Negotiable
  • Built out as: Research And Development
  • Space Type: New
  • In Contiguous block: 646,969 SF
12nd Floor Ste Office 30,417 SF Rate Upon Request 
30,417sf of office/lab space available for lease.

  • Date available: Jul 2026
  • Lease term: Negotiable
  • Service type: Negotiable
  • Built out as: Research And Development
  • Space Type: New
  • In Contiguous block: 646,969 SF

Description 

Seaport Circle is a mixed-use development featuring 650,000 square feet of life science research and office space in Boston's most prominent life science cluster. The project is pursuing LEED Platinum designation, with a 90% reduction in natural gas use.  The two-tower design will provide flexible floor plates ranging from 25,000-75,000 square feet. In addition to state-of-the-art Class A lab and office space, the building will include best-in-class tenant amenity spaces and approximately 5,000 square feet of retail space. 

Seaport Circle will also include a 15,000 SF stand-alone South Boston Waterfront Job Training Pavilion (the Pavilion) with an ambitious mission focused on training for skilled jobs in life sciences and adding talent to the pipeline of opportunity in the Boston area’s exploding life science sector.

Highlights

Life Science Development
Premium, Purpose-Built Lab Space
Roof Deck With Harbor Views
Direct Silver Line Access (On-Site MBTA Station)

Property Flyers

Amenities

  • Reception
  • Central Heating
  • Direct Elevator Exposure
  • Air Conditioning

Public Transportation

Commuter RailDriveWalkDistance
South Station (Fairmount Line - Massachusetts Bay Transportation Authority Commuter Rail (Purple Line), Framingham/Worcester Line - Massachusetts Bay Transportation Authority Commuter Rail (Purple Line), Franklin Line - Massachusetts Bay Transportation Authority Commuter Rail (Purple Line), Greenbush Line - Massachusetts Bay Transportation Authority Commuter Rail (Purple Line), Kingston/Plymouth Line - Massachusetts Bay Transportation Authority Commuter Rail (Purple Line), Middleborough/Lakeville Line - Massachusetts Bay Transportation Authority Commuter Rail (Purple Line), Needham Line - Massachusetts Bay Transportation Authority Commuter Rail (Purple Line), Providence/Stoughton Line - Massachusetts Bay Transportation Authority Commuter Rail (Purple Line)) 3 min 18 min 1.0 mi
North Station (Fitchburg/South Acton Line - Massachusetts Bay Transportation Authority Commuter Rail (Purple Line), Haverhill Line - Massachusetts Bay Transportation Authority Commuter Rail (Purple Line), Lowell Line - Massachusetts Bay Transportation Authority Commuter Rail (Purple Line), Newburyport/Rockport Line - Massachusetts Bay Transportation Authority Commuter Rail (Purple Line)) 6 min - 2.1 mi
Transit/SubwayDriveWalkDistance
South Station (Red Line - Massachusetts Bay Transportation Authority Subway (The T), Silver Line 1 - Massachusetts Bay Transportation Authority Subway (The T), Silver Line 2 - Massachusetts Bay Transportation Authority Subway (The T)) 2 min 18 min 1.0 mi
AirportDriveWalkDistance
General Edward Lawrence Logan International 7 min - 3.5 mi

Parking Details

Parking Available: Yes
Reserved: No
Spaces Provided: 73
Type: Covered
Included in Rent: Yes
Christopher Scott 617-951-4135 Lincoln Property Company
Christopher Scott 617-951-4135 Lincoln Property Company