When a city proposes zoning changes, how do you know whether they’ll be effective? Aaron Barrall shares how we approached the problem in Los Angeles, with lessons for similar upzoning efforts around the world. This is the second episode in a two-part conversation.

Show notes:

• Barrall, A., & Phillips, S. (2024). CHIPing In: Evaluating the effects of LA’s Citywide Housing Incentive Program on neighborhood development potential. UCLA Lewis Center for Regional Policy Studies.
• YouTube recording of Aaron’s and Shane’s presentation at UCLA on the report’s findings.
• Wikipedia article about the États-Unis neighborhood in Lyon, France.
• Episode 20 of UCLA Housing Voice: French Social Housing and the SRU Law with Magda Maaoui.
• Monkkonen, P., Carlton, I., & Macfarlane, K. (2020). One to Four: The market potential of fourplexes in California’s single-family neighborhoods. UCLA Lewis Center for Regional Policy Studies.
• Gabriel, S., & Kung, E. (2024). Development Approval Timelines, Approval Uncertainty, and New Housing Supply: Evidence from Los Angeles. SSRN.
• Manville, M., Monkkonen, P., Gray, N., & Phillips, S. (2023). Does discretion delay development? The impact of approval pathways on multifamily housing’s time to permit. Journal of the American Planning Association, 89(3), 336-347.
• Hilgard Analytics 2024 update on City of Los Angeles housing permitting.
• Dillon, L. (Nov 18 2024). Los Angeles rezoning plan won’t spur enough new housing, report finds. Los Angeles Times.
• Summary of California Senate Bill 79 (2025).
• Information on California Assembly Bill 647 (2025).
• Barrall, A., & Monkkonen, P. (2024). The Fair Housing Land Use Score in California: An Evaluation of 199 Municipal Plans. UCLA Lewis Center for Regional Policy Studies.