Highlights
- The average rent for office space in Portsmouth is $25.78 per square foot, 4.54% higher compared to the previous year.
- The market’s vacancy rate stands at 12.43%, higher than the state average of New Hampshire, which is 12.43%.
2025 Office Space Rent & Sales
- $25.78 2025 Avg. Asking Rent
- 4.54% Y-o-Y Avg. Asking Rent Change
- 12.43% 2025 Office Vacancy Rate
What is the average asking rent price for office space in Portsmouth?
Average asking rents for office space here stand at $25.78 per square foot. The local office market recorded an average vacancy rate of 12.43% in 2025, unchanged from 12.43% in 2024.
Portsmouth, NH Office Asking Rents by Class
What is the average office rent per square foot by property class in NH?
- Avg. Asking Rent Class A & A+$31.37
- Avg. Asking Rent Class B$23.06
- Avg. Asking Rent Class C$14.51
For comparison, the average rent for Class A and A+ office space in New Hampshire was $31.37 per square foot. The state-wide average for Class B space was $23.06 per square foot, and Class C office spaces averaged $14.51 per square foot.
Office Construction in Portsmouth, NH
What are the largest recent office completions in Portsmouth?
The largest recent office completion here is Pease International Tradeport at 100,928 square feet, completed in 2001. The next largest completions are 273 Corporate Drive and 111 New Hampshire Avenue.
| Office building | Address | SF | Completed |
|---|---|---|---|
| 25 Maplewood Ave, Portsmouth NH | 25 Maplewood Avenue, 03801 | 8,712 | 2020 |
| Institutional Quality Downtown NNN Investment | 54 Maplewood Avenue #1, 03801 | 4,862 | 2019 |
| 111 New Hampshire Avenue | 111 New Hampshire Avenue, 03801 | 74,134 | 2007 |
| 130 International Drive | 130 International Drive, 03801 | 50,687 | 2002 |
| Pease International Tradeport | 325 Corporate Drive, 03801 | 100,928 | 2001 |
| 273 Corporate Drive | 273 Corporate Drive, 03801 | 100,000 | 2001 |
| Prime Downtown Portsmouth Office Space | 25 Chestnut Street, 03801 | 25,174 | 2001 |
| Portsmouth Office Park - 230 Commerce Way | 230 Commerce Way, 03801 | 50,400 | 1997 |
| 215 Commerce Way | 215 Commerce Way, 03801 | 40,000 | 1990 |
| Downtown Office Condominium | 118 Maplewood Avenue, Unit C-1, 03801 | 951 | 1990 |
See reports for other markets
- Boston Office Rent Price
- Portland Office Rent Price
- Atlanta Office Rent Price
- Los Angeles Office Rent Price
- Houston Office Rent Price
- Washington Office Rent Price
- Dallas Office Rent Price
- San Francisco Office Rent Price
- Chicago Office Rent Price
- Denver Office Rent Price
- Austin Office Rent Price
- Miami Office Rent Price
- Phoenix Office Rent Price
- San Diego Office Rent Price
- Manhattan Office Rent Price
- Seattle Office Rent Price
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.