Property

511 Congress Street

OfficeExecutive Suites/CoworkingMixed use

511 Congress Street, Portland, ME 04101

32 photos
Listings
Suite 200
For Lease · Office
Active
Available SF
11,523 SF
Asking Rate
$12.00/SF Modified Gross
Lease Type
Modified gross
Suite
Suite 200
Floor
2
List Date
Jan 30, 2024
Available
Jan 29, 2024
Days on Market
936
Listing Agent
Peter Gwilym — Porta & Company

- 1,775± SF - 34,569± SF of Class A Office Space available for lease - Centrally located in downtown Portland, the heart of Financial District - Easily accessible from I-295 exit 6 - On-site parking garage with direct building access - Newl…

Suite 300
For Lease · Office
Active
Available SF
11,523 SF
Asking Rate
$12.00/SF Modified Gross
Lease Type
Modified gross
Suite
Suite 300
Floor
3
List Date
Jan 30, 2024
Available
Jan 29, 2024
Days on Market
936
Listing Agent
Peter Gwilym — Porta & Company

- 1,775± SF - 34,569± SF of Class A Office Space available for lease - Centrally located in downtown Portland, the heart of Financial District - Easily accessible from I-295 exit 6 - On-site parking garage with direct building access - Newl…

Suite 503
For Lease · Office
Active
Available SF
3,300 SF
Asking Rate
$16.00/SF Modified Gross
Lease Type
Modified gross
Suite
Suite 503
Floor
5
List Date
Jan 30, 2024
Available
Jan 29, 2024
Days on Market
936
Listing Agent
Peter Gwilym — Porta & Company

- 1,775± SF - 34,569± SF of Class A Office Space available for lease - Centrally located in downtown Portland, the heart of Financial District - Easily accessible from I-295 exit 6 - On-site parking garage with direct building access - Newl…

Suite 600
For Lease · Office
Active
Available SF
6,145 SF
Asking Rate
$16.00/SF Modified Gross
Lease Type
Modified gross
Suite
Suite 600
Floor
6
List Date
Jan 30, 2024
Available
Jan 29, 2024
Days on Market
936
Listing Agent
Peter Gwilym — Porta & Company

- 1,775± SF - 34,569± SF of Class A Office Space available for lease - Centrally located in downtown Portland, the heart of Financial District - Easily accessible from I-295 exit 6 - On-site parking garage with direct building access - Newl…

Suite 700
For Lease · Office
Active
Available SF
11,523 SF
Asking Rate
$12.00/SF Modified Gross
Lease Type
Modified gross
Suite
Suite 700
Floor
7
List Date
Jan 30, 2024
Available
Jan 29, 2024
Days on Market
936
Listing Agent
Peter Gwilym — Porta & Company

- 1,775± SF - 34,569± SF of Class A Office Space available for lease - Centrally located in downtown Portland, the heart of Financial District - Easily accessible from I-295 exit 6 - On-site parking garage with direct building access - Newl…

Suite 400
For Lease · Office
Active
Available SF
11,523 SF
Asking Rate
$12.00/SF Modified Gross
Lease Type
Modified gross
Suite
Suite 400
Floor
4
List Date
Jan 30, 2024
Available
Jan 29, 2024
Days on Market
936
Listing Agent
Peter Gwilym — Porta & Company

- 1,775± SF - 34,569± SF of Class A Office Space available for lease - Centrally located in downtown Portland, the heart of Financial District - Easily accessible from I-295 exit 6 - On-site parking garage with direct building access - Newl…

Suite 500
For Lease · Executive Suites/Coworking
Active
Available SF
4,646 SF
Asking Rate
$16.00/SF Modified Gross
Lease Type
Modified gross
Suite
Suite 500
Floor
5
List Date
Oct 21, 2025
Available
Jan 29, 2024
Days on Market
307
Listing Agent
Peter Gwilym — Porta & Company

- 1,600± SF - 34,569± SF of Class A Office Space available for lease - Centrally located in downtown Portland, the heart of Financial District - Easily accessible from I-295 exit 6 - On-site parking garage with direct building access - Newl…

Suite 901
For Lease · Office
Active
Available SF
6,685 SF
Asking Rate
$23.50/SF Modified Gross
Lease Type
Modified gross
Suite
Suite 901
Floor
9
List Date
Dec 16, 2025
Available
Dec 1, 2025
Days on Market
251
Listing Agent
Peter Gwilym — Porta & Company

6,685 SF Top Floor Office Suite Centrally located in downtown Portland, in the heart of the Financial District Easily accessible from I-295 exit 6 On-site parking garage with direct building access Newly renovated lobby with Class A finishe…

Sale
For Sale · Office
Active
Available SF
Asking Price
$1
Price/SF
Cap Rate
List Date
Apr 6, 2026
Days on Market
140
Listing Agent
Peter Gwilym — Porta & Company

Porta & Company is pleased to present the opportunity to acquire 511. Congress Street ("511 Congress" or "the Property"), a 128,400 square foot Class A office building with a 256 space on-site parking garage in the rear right in the heart o…

Property Highlights

Location

County
Cumberland
Submarket
Portland-South Portland
Center/Park Name

Building Size

Total Building SF
128,400 SF
Rentable SF
Land (SF)
43,938 SF
Acreage
1.01 Acres
Number of Buildings
2
Floors
9

Building Details

Type
Office
Subtype
Mixed use
Building Class
Class A
Building Status
Existing
Year Built
1974
Year Renovated
2013
Construction
Occupancy Type
Multi-tenant
Leased
Zoning
B-3
Sprinklered
Yes
Parking Ratio
Elevators
Condominiumized
No
Exterior
Clear Height Max
Dock High Doors
1
Grade Level Doors
1
Rail Service
No

Land & Utilities

Lot Width
Lot Depth
Electric
No
Water
Yes
Sewer
Yes
Gas
Fiber
Tax Amount
Tax Year
Comparables
Comparable sales and lease data is available to members only.
Location