A bill for an act requiring cost-benefit analyses of county jail projects, and including effective date provisions.

SSB 3137 requires Iowa counties to conduct a cost-benefit study before approving new jail construction, major renovations (50%+ of existing facilities), or jail expansions. The study must compare the total costs of building/renovating a jail against contracting with neighboring counties for jail space, including metrics like prisoner volume (county vs. non-county residents), annual food/medical costs per prisoner, staffing, equipment replacement, and transport expenses. It also mandates that the study include data on surrounding counties' jail capacities and be made publicly accessible at county meetings. This bill applies directly to county governments planning significant jail projects and takes effect immediately upon enactment.