Browse over 12M HVAC and mechanical permits across 48 states and DC →
Every HVAC permit is a homeowner who just installed or replaced a system — a maintenance-plan, warranty, and future-replacement opportunity. Find them all by city, state, or ZIP through one nightly-refreshed API.
No credit card required. 100 free requests/day.
# HVAC permits issued in Phoenix this season
curl "https://api.permit-stack.com/v1/permits/search\
?state=AZ&city=Phoenix\
&category=HVAC\
&issued_after=2026-04-01\
&per_page=100" \
-H "X-API-Key: pk_your_key_here"
# Returns address, dates, est. value,
# and contractor for every installHVAC permits are public records pulled for AC, furnace, and heat-pump installs and replacements. PermitStack normalizes over 12M HVAC and mechanical permits from city portals (Socrata, ArcGIS, Tyler EnerGov, Accela and more) into one schema across 48 states and DC. Query category=HVAC by city, state, or ZIP, filter by issued_after for fresh installs, and you have a daily lead feed and market-intel source — starting on a free 100 requests/day tier.
Don't want to write code? The CSV export gives you every HVAC permit we hold for a city or county, emailed as a spreadsheet, so you can sort by install date and find the homes due for replacement. On any paid API plan, /v1/plays/system-age?trade=hvac returns that list directly for a city or ZIP: systems installed 10–18 years ago with no replacement permit since.
Shared HVAC leads cost $30-120+ each and land in five inboxes at once. A permit is a first-party public record of a system install — perfect for maintenance-plan offers, warranty follow-up, and replacement timing years later.
The HVAC category spans AC, furnace, and heat-pump installs and replacements across 48 states and DC — one of 20 categories in a 120M+ permit database.
Most sources are re-ingested every night. During a heat wave, the spike in AC-replacement permits surfaces as soon as each city publishes it, and every jurisdiction shows the date its data runs through.
100 free API requests per day, no credit card. Each request returns up to 50 permits from the last 30 days — enough to size a market before you pay anything.
Build an automated pipeline that runs daily. No manual portal-checking, no scraping, no spreadsheets.
Query category=HVAC with city, state, or zip_code, then add issued_after to capture only recent AC and furnace installs.
Each permit returns the full property address, GPS coordinates, estimated project value, status, work description, and the contractor of record where the source provides it.
Poll /v1/permits/events for new and changed permits, or register a webhook to get pushed every fresh HVAC match — straight into your CRM or service software.
Hit the same REST endpoint from any language. Authenticate with a single X-API-Key header — no SDK required.
import requests
# Recent HVAC permits in a hot-climate ZIP
resp = requests.get(
"https://api.permit-stack.com/v1/permits/search",
headers={"X-API-Key": "pk_your_key_here"},
params={
"zip_code": "85032",
"category": "HVAC",
"issued_after": "2026-04-01",
"min_value": 5000,
"per_page": 100,
},
)
# Address comes back as components: address_street,
# address_city, address_state, address_zip.
for p in resp.json()["results"]:
print(p["address_street"], p["address_city"], p["address_zip"], p["estimated_value"], p["contractor_name"])
# Building market intel? Same params, hit
# GET /v1/permits/export for a streaming CSV.Pull every HVAC permit issued in your service ZIPs to reach homeowners who just installed a system — ideal for maintenance plans, IAQ add-ons, and warranty registration follow-up.
A condenser permitted 12-15 years ago is nearing failure. Use back-history and /v1/property/history to flag aging systems due for replacement and get ahead of the breakdown.
Spot homes with older furnaces or straight-AC installs and target them for heat-pump conversions and high-efficiency upgrades as rebates and incentives roll out.
Track HVAC install volume by ZIP and city over time to size demand, plan inventory, and decide where to open the next branch or stage seasonal crews.
Sort by contractor_name to see which HVAC companies are pulling the most permits in your territory — their volume, average project value, and geographic footprint.
Rank ZIPs and metros by install density and project value to guide M&A targeting, franchise siting, and where to concentrate marketing spend.
Every jurisdiction carries a data_status flag — active, historical_archive, or frozen — exposed in the API and on our public coverage page. You never mistake a decommissioned feed for a live one, and future-dated permits are rejected at ingest so your install dates stay trustworthy.
HVAC permits are public records pulled when a homeowner installs or replaces an AC, furnace, or heat pump. PermitStack normalizes them into one API so you can query category=HVAC by city, state, or ZIP and filter by issued_after to surface only recent installs. Each permit returns the property address, dates, estimated value, and contractor name — high-intent leads for maintenance plans, warranty follow-up, and replacement cross-sell.
PermitStack re-ingests most sources every night, starting at 03:00 UTC, so a new permit usually reaches the API within a day of the city publishing it. Some cities publish weeks after filing and some sources are temporarily blocked by their vendor, so every jurisdiction reports a data-through date (its newest permit we hold) and carries a data_status flag (active, historical_archive, or frozen) so you always know how current a source is before you act on it.
PermitStack holds over 12M HVAC and mechanical permits within a database of 120M+ total permits spanning ~902 active jurisdictions across 48 states and DC, plus 75 historical-archive jurisdictions for back-history and aging analysis. Browse the HVAC coverage by city →
Yes. Sort and aggregate by contractor_name, city, ZIP, and estimated value to see which HVAC companies dominate each market, track install volume over time, and spot demand shifts toward heat pumps and high-efficiency systems. The /v1/permits/export endpoint streams the same data to CSV for your BI tools.
Yes. The free tier gives you 100 requests per day with no credit card. Paid plans run $29/mo (Indie) to $499/mo (Scale), all self-serve through Stripe with no sales call; custom Enterprise plans are available above that. See pricing →
120M+ permits · over 12M HVAC & mechanical · 902 active data sources · most refreshed nightly · free tier