Key facts
- AI tools can reduce permit review times, but require accurate zoning data.
- Outdated, contradictory, or exceptional zoning rules can lead AI to errors.
- Incomplete applications are common, with only 10-15% complete at initial review.
- Each review cycle can take 30 to 45 days, extending project timelines.
- About 33% of jurisdictions have inconsistencies between zoning text and maps.
AI-powered tools are increasingly being adopted by U.S. states and municipalities to streamline local permitting and housing approvals, with Honolulu successfully cutting its review times in half. However, the effectiveness of these AI solutions is significantly hampered by outdated, contradictory, and inconsistent zoning and building code data. This lack of accurate underlying information can lead AI to make errors, necessitating further human review and prolonging already lengthy approval processes. Homebuilders face substantial delays, often stemming from a series of small administrative inefficiencies rather than a single major obstacle. Jenny Song of Infilla highlighted that only 10-15% of applications are complete upon initial review, leading to extended back-and-forth with municipal staff. Sara Bronin of Land Use Labs pointed out that zoning codes can be hundreds of pages long, with inconsistencies between text and maps in about 33% of jurisdictions, further complicating the process. Vikas Enti of Reframe Systems shared an example where a project was flagged for a zoning violation after clearing state approval and manufacturing, illustrating how hidden zoning details can cause significant issues.