Highlights
- The average rent for office space in South Portland is $18.81 per square foot, 3.42% higher compared to the previous year.
- The market’s vacancy rate stands at 30.46%, higher than the state average of Maine, which is 22.40%.
2025 Office Space Rent & Sales
- $18.81 2025 Avg. Asking Rent
- 3.42% Y-o-Y Avg. Asking Rent Change
- 30.46% 2025 Office Vacancy Rate
What is the average asking rent price for office space in South Portland?
Average asking rents for office space here stand at $18.81 per square foot. The local office market recorded an average vacancy rate of 30.46% in 2025, unchanged from 30.46% in 2024.
South Portland, ME Office Asking Rents by Class
What is the average office rent per square foot by property class in ME?
- Avg. Asking Rent Class A & A+$23.96
- Avg. Asking Rent Class B$18.13
- Avg. Asking Rent Class C$13.68
For comparison, the average rent for Class A and A+ office space in Maine was $23.96 per square foot. The state-wide average for Class B space was $18.13 per square foot, and Class C office spaces averaged $13.68 per square foot.
What are the largest recent office completions in South Portland?
The largest recent office completion here is Corporate Headquarters at 217,672 square feet, completed in 1991. The next largest completions are 300 Southborough Drive and Sublease | 48 Atlantic Place, South Portland.
| Office building | Address | SF | Completed |
|---|---|---|---|
| 100 Gannett Drive | 100 Gannett Drive, 04106 | 25,351 | 2000 |
| Eastern Mall Office Park- Building C | 75 John Roberts Road, Building C, 04106 | 31,376 | 1998 |
| Class A Office Space | 707 Sable Oaks Dr, 04106 | 66,000 | 1992 |
| Corporate Headquarters | 2 Gannett Dr, 04106 | 217,672 | 1991 |
| Eastern Mall Office Park - Building A | 75 John Roberts Road, 04106 | 36,972 | 1989 |
| 300 Southborough Drive | 300 Southborough Drive, 04106 | 116,515 | 1987 |
| Class A Medical/Dental Suite | 100 Foden Rd, 04106 | 26,488 | 1985 |
| 1 Runway Rd | 1 Runway Rd, 04106 | 7,200 | 1982 |
| Sublease | 48 Atlantic Place, South Portland | 48 Atlantic Place, 04106 | 72,490 | 1979 |
| Atlantic Place Commerce Center | 311 Darling Ave, 04106 | 72,490 | 1979 |
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Disclaimer
All information on this page is based on city-level data that includes properties equal to or larger than 25,000 square feet.
Averages were calculated based on values dated between January 1st and December 31st 2025. Construction pipeline data represented herein is valid as of January 2026.
While every effort was made to ensure the accuracy of the data presented in this report, the information is provided “as is” and neither CommercialCafe nor Yardi Research Data can guarantee that the information provided is complete.