Texas AHJ Lookup — interactive map.
Find the Authority Having Jurisdiction actually enforcing fire code on your building. Search by city, filter by metro, see the current IFC edition, fire marshal contact, and permit portal for every Zion-tracked jurisdiction. Need the ERCES trigger for a specific building? That lives in Building Signal Check.
The map
Click any pin to see that jurisdiction's fire marshal contact, adopted code edition, and permit portal. ERCES trigger criteria (square footage, stories, signal and battery requirements) are served only through Building Signal Check, where a verified email is required. Search by city or filter by metro to narrow the list. Currently tracking 141 Texas AHJs — all backed by Zion's Building Signal Check dataset (part of the 1,112-jurisdiction footprint across 23 U.S. states, constantly expanding).
141 jurisdictions shown
DFW Metroplex — AHJ quick reference
The 12 DFW cities Zion services most. Code editions and contact info as of May 2026 — verify with the AHJ directly before relying on adoption dates for plan submittal.
Source: city websites, municipal code libraries, fire marshal directories. Last verified May 2026. Adoptions change — verify with the AHJ before relying on this table for design or permit submittal.
How AHJ code adoption works
Every Texas city or county that has adopted a fire code does so by ordinance — they reference a specific edition of the International Fire Code (IFC) and the International Building Code (IBC) and amend specific sections via local amendments. The edition adopted is the one your project must comply with, not necessarily the newest published edition.
Example: as of May 2026, McKinney has adopted the 2024 IFC (effective October 1, 2025), while Dallas is still on the 2021 IFC. A sprinkler design that passes McKinney plan review under 2024 IFC may need adjustment to pass Dallas review under 2021 IFC — the codes are not identical edition-to-edition.
For Texas-administered occupancies (state-owned, certain healthcare, certain regulated industries), the Texas State Fire Marshal's Office (SFMO) enforces under NFPA 1-2021 and NFPA 101-2021 per 28 TAC Chapter 34.
Don't see your jurisdiction?
Zion's public AHJ map currently tracks 141 Texas jurisdictions — a curated slice of the full dataset. Building Signal Check's private backend covers 261 Texas AHJs plus 1,112 jurisdictions across 23 U.S. states, constantly expanding, with the exact ERCES trigger sq ft, story counts, DAQ requirements, plan-review timelines, and radio-shop coordination each jurisdiction requires. If your building sits in a jurisdiction not shown on the map above — or if you need those exact answers:
- Run Building Signal Check — the tool queries the full 1,112-jurisdiction dataset and returns a specific ERCES trigger read for your address in 60 seconds.
- Or email info@zion.us with your building address — we'll come back same-day with the AHJ profile, code edition, and adoption date.