The list pits the likes of London's Ash Sakula against international Scandinavian giants CF Møller for the development in Houghton Regis.
The £15 million project will see development of a residential scheme, with a particular focus on ensuring that the 'quality and specification of the properties and their location on the 2ha site is not determined by the intended end-users'.
The full list is:
Ash Sakula Architects;
Fraser Brown MacKenna Architects;
C.F. Møller Architects UK;
Proctor and Matthews Architects with Mae LLP Architects;
Riches Hawley Mikhail Architects; and
Sarah Wigglesworth Architects.
Steve Morris, regional development manager at client Aldwyck Housing Association, said: 'We were delighted by the number and quality of the teams that entered the competition.
'We feel certain that the shortlisted teams will come up with some exciting design proposals and look forward to seeing how they respond to the partner's vision for the mixed-tenure housing development.'