Bridging Policy and Development with Site Planning AI
Across the country, municipalities are rethinking land use patterns as they navigate housing demand, shifting economic conditions, and the realities of zoning policy. In Upper Merion Township, a community balancing a strong tax base with rapid change, Township Planner Jarrett Lash is using AI-powered tools to collaborate with developers and government officials on what’s actually possible on the ground.With TestFit’s site planning AI, Jarrett can quickly test scenarios, evaluate redevelopment options, and bring clarity to conversations that once relied on lengthy feasibility studies and guesswork. The result: faster decisions, stronger partnerships, and a clearer link between zoning codes and real development outcomes.
Join TestFit CEO Clifton Harness and Upper Merion’s Jarrett Lash for a conversation on how AI is helping communities and their partners uncover the highest and best use of land and what other cities can learn from their experience.
Clifton Harness loves to build—buildings & now companies. He graduated from the University of Texas at Austin with a Bachelor of Architecture. Soon after joining a real estate development company as an architect, Clifton started working with college roommate Ryan Griege after hours to innovate deal processes, which soon grew into TestFit. Clifton lives in Dallas with his wife Annalise, children Savannah and Wells, and his golden doodle, Brinkley.
Jarrett currently serves as the Township Planner for Upper Merion Township, one of Pennsylvania’s fastest-growing municipalities and home to the third-largest mall in America, where he leads long-range planning and land development. His work has helped position the township — recently ranked the second-best place in the nation for families by Fortune — as a model for sustainable growth.
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