Campus Hours

Great Bay’s building hours for Summer 2022 are as follows:

Portsmouth Building Hours

Monday & Wednesday  7:00am – 6:00pm

Tuesday & Thursday  7:00am – 8:00pm

Friday  7:00am – 4:00pm

Saturday  Closed

Sunday  Closed

Rochester Building Hours

Monday & Tuesday  10:30am – 9:00pm or last class

Wednesday & Thursday  9:00am – 6:00pm or last class*

Friday  By appointment only*

Saturday & Sunday  Closed

*Only open to students in class


  • 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. 


The College (Ports/Roch) will be CLOSED on the following days in observance of these holidays:

Closed Monday, Labor Day – September 5th, 2022 – Labor Day Holiday Observed – No Classes and Offices Closed

Closed, Friday, November 11th, 2022 – Veterans’ Day Holiday Observed – No Classes and Offices Closed

Closed, Thursday, November 24th – Friday, November 25th, 2022 – Thanksgiving Holiday – No Classes and Offices Close

Closed, Saturday, December 24th – Sunday, January 1st, 2022, Offices Closed


Portsmouth Directions

Great Bay Community College (Main Campus)
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 Directions

Rochester Campus
5 Milton Road
Unit 32
Rochester, NH 03867

(603) 427-7700
(800) 522-1194
Fax (603) 330-3001