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Property profile & analytics

511 Congress St Portland, ME 04101

  • Commercial real estate
  • 0.98 lot acres
Value Estimation
Location Intelligence
Property ID
US42-0805768
The Realmo ID is a unique identifier assigned to every property, incorporating country codes and precise geo-coordinates for 300x300-foot land blocks. It enables standardized data collection and seamless integration of disparate sources such as ownership, tax, title data and physical specifications. By aggregating current and historical records, the Realmo ID powers advanced analytics and delivers deep, verifiable insights for real estate professionals.

Current Use by Public Records

  • Honeck & O'Toole: Busby Kelly, JD, CPA / Accountant
  • Troubh Heisler, PA / Attorney
  • Dill Cynthia A / Attorney / Service Establishment
  • Libby Kevin G / Attorney
  • Golden Lotus Restaurant / Chinese Restaurant

Property Details for 511 Congress St

Lot size
0.98 lot acres
Property type
Commercial real estate
APN
PTLD M:037 B:D002001
APU
PTLDM037BD002001

Description

This exceptional Class A office building, located in the heart of Portland's financial district, offers 8 available executive suites ranging from 1,600 to 11,523 square feet. The 9-story building, constructed in 1973 and extensively renovated in 2019, boasts a total of 140,684 square feet. Currently, 71,926 square feet of prime office space is available for lease, providing multiple tenancy options. The building features a modern, newly renovated lobby with high-end finishes, offering premiere 306-degree views of Portland and its surrounding areas. Conveniently situated with easy access from I-295 Exit 6, the property includes an on-site parking garage with direct building access for the 256 available parking spaces. Building amenities include a first-floor tenant gym and 24/7 building security, along with on-site property management. The building is zoned B3 and has an APN of 037 D002. This is a rare opportunity to secure prestigious office space in a highly desirable location. Minimum leasable space is 1,600 square feet, with a maximum contiguous space of 11,523 square feet available. Contact us today to schedule a viewing and explore the possibilities.

Value Estimation

Powered by Realmo proprietary methodology Last update: July 3, 2025
  • CAP approach

  • Comparable approach

  • Alternative Use

Location Insight

  • Map
  • Local Demand
City
Portland
County
Cumberland
State
Maine
Longitude
-70.2611
Latitude
43.6566
CBSA code
38860
CBSA name
PORTLAND-SOUTH PORTLAND-BIDDEFORD, ME METROPOLITAN STATISTICAL AREA

Property Tax & Assessments

Tax date
Tax Amount
Assessed Land Value
Assessed Improvement Value
Total Assessed Value
Applied Tax Rate
Land Market Value
Improvement Market Value
Total Market Value
2023
$195,111
$3,114,900
$10,425,100
$13,540,000
-
$0.00
$0.00
$0.00
More about this property
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