A preferred options document, launched at the North Northamptonshire summit last week, says that the sub-region's planning strategy should achieve a strong network of towns through "co-ordinated, complementary growth" at Corby, Kettering and Wellingborough.
The towns should aim for greater self-containment, it argues, reducing the need to travel, "but with the overall aim of greater self-containment for North Northamptonshire as a whole". The strategy decides against selecting one of the towns as the main focus in favour of developing all three.
Andrew Longley, planning manager of the joint unit that drafted the paper, said: "This is a three-centred approach. While Kettering will remain the largest town centre, each of the towns will be earmarked for major investment."
The plan will aim to "promote healthy competition, ensure diversification and encourage regeneration". On housing, it says that the preferred option is to concentrate on a few large urban extensions around the three towns that can include a mix of homes, jobs, other uses and infrastructure to support a step change in housing development.
Taking account of urban capacity and sites already allocated, 21,500 homes will have to be provided on greenfield sites, according to the framework.
Longley stressed that the document is "work in progress" and that emerging proposals will be taken forward into a core strategy to be submitted to the government next year.
Preferred Options for North Northamptonshire can be viewed via www.PlanningResource.co.uk.