Information on Great Bay’s Portsmouth and Rochester campuses, including building hours, contact information, campus locations, and maps, can be found here.

Campus Building Hours

Portsmouth Campus

Monday to Thursday 
7:00am – 9:00pm*

7:00am – 4:00pm

Saturday & Sunday 

*Hours for specific departments/services can be accessed below

Rochester Campus

Monday & Tuesday 
9:00am – 7:00pm

8:00am – 5:30pm 

8:00am – 6:00pm

By appointment only

Saturday & Sunday 

Directions, Maps & Contact Information

Great Bay Portsmouth

Main Campus
320 Corporate Drive
Portsmouth, NH 03801

Phone: (603) 427-7600
(800) 522-1194
Fax: (603) 334-6308
Email: [email protected]

TDD/Voice: Relay New Hampshire
(800) 735-2964 or 711

Great Bay Rochester

Technical Skills Campus
5 Milton Road
Unit 32
Rochester, NH 03867

Phone: (603) 427-7700
(800) 522-1194
Fax: (603) 330-3001
Email: [email protected]


Additional Information


• Monday to Friday the Services/Building closes after the last class is dismissed.

• Building may be open additional hours to accommodate classes already scheduled, these hours will not be posted individually. 

• Building Hours reflects the hours of operation if you are actively in class or using the Study Lounge on the Rochester campus. 

• These “Building Hours” are subject to change based on classes running and coverage.  The security personal will ask you leave once the last class is dismissed for the evening. 

• Rochester Campus doors are currently still locked at all times.  Please use the buzzer to the left of the door to request access to the building. 



Great Bay campuses will be CLOSED and NO CLASSES will be held on the following days:

Memorial Day
Monday, May 27, 2024

Juneteenth Holiday
Wednesday, June 19, 2024

Independence Day
Thursday, July 4, 2024

Labor Day
Monday, September 2, 2024

Veterans’ Day
Monday, November 11, 2024

Thanksgiving Day & Day After Thanksgiving
Thursday and Friday, November 28 and 29, 2024

Chancellor’s Holiday/Winter Recess Day
Tuesday, December 24, 2024

Christmas Day
Wednesday, December 25, 2024

Winter Recess
December 26 to December 31, 2024

New Year’s Day
Wednesday, January 1, 2025