Hours & Directions

Hours of Operation

Portsmouth Building Hours
Monday - Thursday 7:30am - 10:00pm​
Friday 7:30am - 4:00pm
Saturday 8:00am - 3:30pm
Sunday Closed

Department Hours
Detailed Department Hours - Nov. 10th - Dec. 19th (Portsmouth)

Rochester Building Hours
Monday - Thursday 8:00am - 7:00pm
Friday 8:00am - 4:00pm
Saturday 8:00am - 1:30pm
Sunday Closed

Note: The closing times that are cited refer to the offices and service centers at the College. Classes will often run beyond the stated closing times. Our Security and Maintenance personnel will continue to be here until the building is locked up after all classes have ended.


Main Campus – Portsmouth

Great Bay Community College
320 Corporate Drive
Portsmouth, NH 03801

(603) 427-7600
(800) 522-1194
Fax (603) 334-6308

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

Rochester Campus

Advanced Technology & Academic Center
5 Milton Road
Unit 32
Rochester, NH 03867

(800) 522-1194
Fax (603) 330-3001