Not everyone is going to want to buy a home immediately. There will be a need for some rentals - a mix of units. There is a concern over infrastructure and schools. Community attitude toward rentals and low income housing needs improvement. Many of the new prison employee families may very well qualify for low income housing assistance.
People are reluctant to turn over agricultural land for housing.
NOVA is an Oregon planning group covering Nyssa, Ontario and Vail, but the model could be adapted in Idaho. Ida-Ore Planning and Development Association is an economic development district that covers both sides of the state line. It includes county commissioners and other local leaders. The Association of Idaho Cities has a technical assistance program in growth management. Need a clearinghouse.