Bellevue, Washington, tested AI on permitting: complete first submissions rose from 22% to 67% in a backtest of 276 past permits.
https://bellevuewa.gov/sites/default/files/media/pdf_document/2026/dsd-08042026-govstreamai-case-study-early-results.pdf
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The City of Bellevue, Washington, is piloting AI tools for building permits in partnership with Govstream.ai.
Challenge: In a random sample of 276 residential permits, 78% were missing at least one required document on first submission, and each resubmission adds two to four weeks.
AI's role: AI drafts citation-backed answers from city code, GIS, zoning and permit history; staff review, edit and finalize them.
Results: Applications complete on first submission: 22% → 67% (backtest of 276 past permits, not live operation). Required documents correctly identified: 96%. Staff time saved: an estimated 152 hours in one month (staff estimate).
What made it stick: Assistants trained on city codes, GIS and permit data, staff review of every answer, and ongoing rule tuning.
People lead; AI walks alongside. AI does the research, so staff can focus their expertise on judgment calls.
Takeaway: Helping applicants before they submit, rather than flagging problems afterward, can cut rework for everyone.
Source: https://bellevuewa.gov/sites/default/files/media/pdf_document/2026/dsd-08042026-govstreamai-case-study-early-results.pdf (Aug 2026, City of Bellevue)
