Search 5.7 million+ building permits across 22 U.S. cities. Classified into 19 categories, geocoded with lat/lng, and ready for your app in minutes.
# Search solar permits in Austin, TX curl "https://api.permit-stack.com/v1/permits/search?city=Austin&state=TX&category=solar" \ -H "X-API-Key: pk_your_key_here"
{
"total": 13604,
"results": [{
"permit_number": "2026-040187 EP",
"category": "SOLAR",
"property_type": "RESIDENTIAL",
"address_street": "2900 PECAN SPRINGS RD",
"address_city": "AUSTIN",
"address_zip": "78723",
"description_raw": "Install new 5.76 kW rooftop solar system...",
"latitude": 30.3009,
"longitude": -97.6846
}]
}
One endpoint to search millions of permits. No scraping, no PDFs, no FOIA requests, no stitching together data from 15 different city portals.
Search by city, state, ZIP, permit category, status, date range, estimated value, contractor name, or radius from any lat/lng coordinate.
Every permit is classified: solar, roofing, HVAC, electrical, plumbing, new construction, demolition, EV charger, pool, fence, and more.
Most permits include latitude and longitude, enabling map visualization, radius search, and spatial analysis out of the box.
Search contractors by name, location, or specialty. View their permit history, project categories, and estimated project values.
PostgreSQL + PostGIS backend with spatial indexes. Every query is fast, even across millions of records. Daily data refreshes from source portals.
Interactive OpenAPI docs, simple X-API-Key auth, clean JSON responses, and predictable pagination. Integrate in under 10 minutes.
Permit data is a leading indicator of construction activity. Dozens of industries rely on it.
Find homeowners with recent roofing permits — ideal candidates for solar panel installations.
Verify roof age, electrical upgrades, and structural modifications for accurate risk assessment.
Identify active construction projects in your area. Generate leads from permit filings before competitors.
Track renovation activity and new construction as a leading indicator of neighborhood growth.
Enrich property profiles, improve automated valuations, and power lending decisions with permit history.
Analyze construction trends by category, geography, or time period across multiple cities.
Updated daily from official city and county open data portals. New cities added regularly.
No credit card required. Upgrade when you need more capacity.
PermitStack is a REST API that gives developers access to over 4 million U.S. building permits across 22 cities. Every permit is classified into categories (solar, roofing, HVAC, etc.), geocoded with coordinates, and searchable by dozens of filters. Get an API key in 30 seconds and start querying immediately.
All data is sourced from official city and county open data portals (Socrata/Tyler Data & Insights). We aggregate, normalize, and classify records from each city into a unified schema so you don't have to deal with 15 different APIs and data formats.
Data is refreshed daily at 3 AM UTC. Each city's portal is polled for new and updated permits. Incremental updates ensure minimal lag between a permit being filed and appearing in our API.
We classify permits into 19 categories: new construction, renovation, demolition, electrical, plumbing, mechanical, roofing, solar, EV charger, HVAC, fire alarm, sign, fence, pool, foundation, addition, interior remodel, grading, and other.
Yes. All plans, including the free tier, allow commercial use. The underlying permit data is public government data. See our Terms of Service for details.
Yes, on the Pro plan and above. Enterprise customers can receive data via Snowflake, BigQuery, or custom integrations. Contact us for details.
Currently: New York City, Chicago, Los Angeles, Austin, San Francisco, Honolulu, Boston, Fort Worth, San Diego County, Seattle, New Orleans, Baton Rouge, Dallas, Nashville, and Santa Rosa. We add new cities regularly.
Get your API key in 30 seconds. No credit card. No sales calls.