- Type
- Sale
- Status
- Active
- Asking Price
- $1
- Price/SF
- $0.00/SF
- List Date
- Apr 6, 2026
- Days on Market
- 217
- Owner Financing Available
- No
- 1031 Exchange
- No
- Land Lease
- No
- Sale Investment
- YES
- Owner Occupied
- No
- Last Verified
- Nov 2, 2026
- Agent Ownership Interest
- No
OFFICE TOWER | PARKING GARAGE FOR SALE
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 of Downtown Portland. The property at 511 Congress enjoys a premier location opposite Monument Square in the center of the city. With the ability to immediately occupy full floors and the ability to take advantage of the opportunity zone program, this opportunity is ideal for both investors and owner occupants.
- Type
- Office · Mixed Use
- Building Class
- Class A
- Size
- 128,400 SF
- Acreage
- 1.01 Acres
- Occupancy Type
- Multi Tenant
- Year Built
- 1974
- Year Renovated
- 2013
- Floors
- 9
- Sprinklered
- Yes
- County
- Cumberland
- Submarket
- Portland-South Portland
- Water
- Available
- Sewer
- Available
- Loading Docks
- 1
- Drive-in Doors
- 1
- Zoning
- B-3
- Map
- 037 D002001
- Assessor
- Assessor record
- Type
- Sale
- Status
- Active
- Asking Price
- $1
- Price/SF
- $0.00/SF
- List Date
- Apr 6, 2026
- Days on Market
- 217
- Owner Financing Available
- No
- 1031 Exchange
- No
- Land Lease
- No
- Sale Investment
- YES
- Owner Occupied
- No
- Last Verified
- Nov 2, 2026
- Agent Ownership Interest
- No
OFFICE TOWER | PARKING GARAGE FOR SALE
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 of Downtown Portland. The property at 511 Congress enjoys a premier location opposite Monument Square in the center of the city. With the ability to immediately occupy full floors and the ability to take advantage of the opportunity zone program, this opportunity is ideal for both investors and owner occupants.
- Type
- Office · Mixed Use
- Building Class
- Class A
- Size
- 128,400 SF
- Acreage
- 1.01 Acres
- Occupancy Type
- Multi Tenant
- Year Built
- 1974
- Year Renovated
- 2013
- Floors
- 9
- Sprinklered
- Yes
- County
- Cumberland
- Submarket
- Portland-South Portland
- Water
- Available
- Sewer
- Available
- Loading Docks
- 1
- Drive-in Doors
- 1
- Zoning
- B-3
- Map
- 037 D002001
- Assessor
- Assessor record