PlainPermit

Changelog

Short answer: The latest update was on : 10 new projects for the remaining 10 cities.

Also available as an Atom feed.

10 new projects for the remaining 10 cities

Added the 10 new project types for New York, Chicago, Philadelphia, Boston, Washington DC, Jacksonville, Indianapolis, Seattle, Oklahoma City and Nashville. All 25 cities now cover 16 projects. Answers we could not confirm from an official source are labeled Unverified, confirm locally.

/projects/window-door-permit/ · /il/chicago/hvac-permit/ · /dc/washington/solar-panel-permit/ · /pa/philadelphia/retaining-wall-permit/

10 new projects for Texas, California and Las Vegas cities

Added the 10 new project types for Houston, San Antonio, Dallas, Fort Worth, El Paso, Los Angeles, San Diego, San Jose, San Francisco and Las Vegas. Answers we could not confirm from an official source are labeled Unverified, confirm locally.

/projects/ev-charger-permit/ · /ca/san-francisco/solar-panel-permit/ · /tx/fort-worth/retaining-wall-permit/ · /ca/san-diego/retaining-wall-permit/

10 new projects for Austin, Charlotte, Columbus, Denver and Phoenix

Added pools and hot tubs, electrical panel upgrades, HVAC/AC replacement, solar panels, window and door replacement, siding, driveways and patios, retaining walls, EV chargers and ADU/garage conversions for the first five cities. Answers we could not confirm from an official source are labeled unverified.

/projects/hvac-permit/ · /projects/solar-panel-permit/ · /projects/retaining-wall-permit/ · /nc/charlotte/window-door-permit/

Guides, city comparisons, fee pages, open data and feed

Added national "Do I need a permit" comparison tables for every project, per-city verified permit fee pages, guides on how to apply and on building without a permit, a permit myths page, open data downloads (verified rules only, CC BY 4.0), llms-full.txt, this changelog and an Atom feed.

/guides/ · /data/ · /projects/shed-permit/ · /tx/austin/permit-fees/

Added Jacksonville, Indianapolis, Seattle, Oklahoma City and Nashville

Completes the 25 most populous US cities. Notable: Seattle-King County now requires a permit for every replacement water heater (since July 1, 2026); Oklahoma City requires a re-roofing permit over 500 sq ft (since Aug 1, 2025).

/fl/jacksonville/ · /in/indianapolis/ · /wa/seattle/ · /ok/oklahoma-city/ · /tn/nashville/ · /wa/seattle/water-heater-permit/

Added New York City, Chicago, Philadelphia, Boston and Washington, DC

Five Northeast and Midwest cities added with official sources.

/ny/new-york/ · /il/chicago/ · /pa/philadelphia/ · /ma/boston/ · /dc/washington/

Added Los Angeles, San Diego, San Jose, San Francisco and Las Vegas

Five West Coast and Nevada cities added with official sources.

/ca/los-angeles/ · /ca/san-diego/ · /ca/san-jose/ · /ca/san-francisco/ · /nv/las-vegas/

Added Houston, San Antonio, Dallas, Fort Worth and El Paso; new Austin, Denver and Mecklenburg fees

Five Texas cities added. Austin fees updated to the FY2026-27 schedule (effective Oct 1, 2026); Austin water heater rule verified; Denver and Mecklenburg County fees extracted from official schedules. State hub pages added.

/tx/houston/ · /tx/san-antonio/ · /tx/dallas/ · /tx/fort-worth/ · /tx/el-paso/ · /tx/austin/

Launch: 5 cities, 6 projects

PlainPermit launched with Austin, Charlotte, Columbus, Denver and Phoenix: fence, deck, shed, water heater, roof replacement and interior/bathroom remodel rules from official sources.

/tx/austin/ · /nc/charlotte/ · /oh/columbus/ · /co/denver/ · /az/phoenix/

Not legal advice. Always confirm with your local building department. Rules change, and your parcel's zoning, HOA, historic district, floodplain or utility work can change the answer. We show the official source and the date we last checked it so you can verify for yourself.