Aldwyck Housing Association, together with two local authorities, is seeking a 'lead partner' to work on a residential Private Public Partnership for a site in Houghton Regis.
According to a statement, the project should deliver a sustainable, long-term model for other high-density developments in the South Bedfordshire and South Midlands growth area.
This area is identified in the government's Sustainable Communities Plan as a zone ripe for the new housing required by the South East's economy.
The final development will have a density of 75 dwellings per hectare and 40 per cent of the units will be affordable. The client body also hopes that there will be an 'emphasis towards providing family housing'.
The statement continues: 'The winning team will need to create an architectural sense of place, with innovative ideas to generate value and maximise social capital - particularly in the quality of the public realm.'
From initial expressions of interest, up to six teams will be invited to develop design proposals for the £15 million project, with each of the shortlisted teams receiving an honorarium of £4,000.
For a briefing paper contact the RIBA Competitions Office on 0113 234 1335, or visit www.architecture.com/competitions.
The deadline for expressions of interest is 30 August.