Which state was the first to institute extraterritorial mandatory referral of subdivision plats?

California holds the distinction of being the first state to implement extraterritorial mandatory referral of subdivision plats. This mechanism allows local jurisdictions to review and influence subdivision proposals that may have impacts beyond their boundaries, reflecting a broader perspective on land use planning and regional development. The policy encourages collaboration between neighboring jurisdictions and ensures that planning decisions consider potential effects on adjacent areas.

In California, the extraterritorial review process helps to manage growth and development in a more coordinated way, addressing regional concerns such as infrastructure, environmental impacts, and community character. This proactive approach helps prevent conflicts between municipalities and promotes sustainable development patterns, which are particularly important given California's diverse and often complex land use challenges.

The other states mentioned have their own planning regulations and philosophies, but they do not have the same historical precedence as California in establishing an extraterritorial review process for subdivision plats.