Public consultation is set to begin over proposals to build 6,600 homes across south Somerset.
Residents will also be asked to consider possible locations for new schools, health centres and shops.
Originally the district council was told to plan for 19,700 new homes as part of the Regional Spatial Strategy.
This target was reduced to 16,600 new homes under the coalition government, most of which have already been built or planned for since 2006.
As part of the core strategy, South Somerset District Council has to find suitable locations for the remaining 6,600 homes.
It hopes to build 4,475 of them on the edge of Yeovil where 3,700 could form an eco-extension, including new schools, local services and infrastructure.
The term eco-extension relates to homes built to the latest environmental standards.
The location of the eco-extension has not been chosen although Keyford, Brympton and Over Compton in the south, south east and south west have been put forward as broad search areas.
The public consultation for the core strategy will run until 3 December.
Ric Pallister, portfolio holder for spatial planning and the district council's deputy leader, said: "At the moment we've got a draft plan which has been put together by officers but it's a very small number of people who have been preparing this.
"In many ways it is their ideas against what we're allowed to do and what we're not allowed to do of what they think is right for south Somerset but we need to know from people in south Somerset what is right for them."
Almost 330 homes have also been earmarked for Chard and another 350 for Wincanton.
The district council hopes to adopt the final plan in Spring 2012, once it has gone through the Planning Inspectorate for final approval.
Details of the open days are on the South Somerset District Council website.