Its design has retained the original quadrangle at the St Mary's site and will create a new "village square" at the centre of the student community.
The practice is using permeable paving and SUDS as well sourcing local stone for the gabions featured.
Landscape designers also plan to reuse the site spoil to create mounds, which will allow for fewer trips by heavy vehicle to the site.
University pro-vice chancellor Professor Carol Tully said: "At the heart of the design is a commitment to provide a real sense of community with an enhanced social and living space environment."
Bangor University has submitted a planning application for the site and subject to approval demolition is expected to start this spring, with the scheme complete by the start of term in September next year.
The project will also feature a 600-room residence, a cafe bar, and shop, laundrette and sports and fitness facilities designed by architects Faulkner Brown.