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:

Thanksgiving Holiday
Thursday, November 23 & Friday, November 24, 2023

Christmas Day Holiday
Monday, December 25, 2023

CCSNH Winter Recess
Tuesday, December 26 – Friday, December 29, 2023

New Year’s Day
Monday, January 1, 2024

Martin Luther King, Jr. Day
Monday, January 15, 2024

President’s Day
Monday, February 19, 2024

Memorial Day
Monday, May 27, 2024