Information may be inaccurate or out of date. Always confirm permit requirements with the official city, county or state website before you start work. Read our disclaimer

Editorial Policy & Methodology

Last updated: 2026-09-17

This page explains where our data comes from, how we verify it, and how to report an error — the same standard we hold every page on this site to.

Where Our Data Comes From

Every fact on USA Permits — whether a permit is required, a fee, a size threshold, a setback distance, or an inspection requirement — is sourced from official government sources only, in this priority order:

  1. Official city, county, or state government websites
  2. Municipal code (the actual zoning/building ordinance text)
  3. Official PDFs published by a building or planning department (fee schedules, permit applications, checklists)
  4. Official permit portals

We do not use third-party SEO sites, contractor blogs, or forums as a source of permit rules. We may reference such sites in our own competitive research, but never as a source for a fact published on a permit page.

How We Extract and Verify Facts

Our process combines automated collection with source-linked review:

  1. A crawler collects the official page or document for a given city and permit type, respecting each site's robots.txt and rate limits.
  2. Facts are extracted with each value tied to its source URL and the exact source text it came from.
  3. If a fact isn't stated in any official source, the field is left blank — we do not fill gaps with estimates, averages, or AI-generated guesses.
  4. If two official sources disagree (for example, a city page and a county page giving different fee ranges), the fact is flagged for manual review and withheld from publication until resolved, rather than picking one arbitrarily.
  5. Every published page shows a "Last Verified" date — the date we last confirmed the information against the official source.

Recheck Schedule

We periodically recheck each official source. If a source's content hasn't changed since our last check, we don't republish it. If it has changed, we re-extract the facts, compare old vs. new, and either update the page automatically (for a clear, unambiguous change) or route it to manual review (if the change is ambiguous or conflicting).

When We Don't Have Enough Data

If we can't find a real official source for a given city and permit type, or the information we can verify is too thin to be useful, the page is not published for search engines to find (it stays noindex) rather than publishing a thin or speculative page. See our Disclaimer for why this is never a substitute for confirming requirements with your local building department.

Corrections

Rules and fees change, and we may make mistakes. If you find outdated or incorrect information:

  1. Use the "Report an error" link on the relevant page, or email [email protected] with the page URL.
  2. We review reports against the current official source.
  3. Confirmed corrections are published with an updated "Last Verified" date.

Editorial Independence

Our advertising (see Advertising Disclosure) does not influence the facts we publish. Permit requirements are reported as we find them in official sources, regardless of any advertiser or partner relationship.