Snohomish County sellers may soon face new septic system requirements when transferring property. Beginning November 1, 2026, these changes could influence inspections, documentation, transaction planning, and closing timelines. The best strategy is to start early: review available septic records, understand which requirements may apply, and coordinate with your Realtor®, qualified septic professionals, and county resources. Early preparation can help uncover potential issues while there is still time to address them, keeping buyers informed and transactions moving forward. Contact us to discuss how to prepare your property and plan ahead.