Anchorage, AK Building Safety: Fire Sprinkler Requirements (2026)
Key Facts
- Local rule
- IRC Section R309 deleted entirely
- Applies to
- New one- and two-family homes, townhouses
- Plumbing tie-in
- AMC 23.25.612.0 also deleted
- Still required for
- Multifamily, care & institutional buildings
- Amendment
- AO No. 2026-33, effective 4-14-2026
Summary
Anchorage struck the International Residential Code's automatic fire sprinkler mandate, so new one- and two-family homes and townhouses built here don't need fire sprinkler systems installed.
§ 23.85.R309. Automatic fire sprinkler systems. Delete this section in its entirety. (AO No. 2026-33, 4-14-2026) § 23.85.R315.1. Sleeping lofts. Revise the first line of the exception to read: Areas that meet any of the following conditions shall not be considered a sleeping loft: [...] (AO No. 2026-33, 4-14-2026) § 23.85.R316.3. Story above grade plane. Delete exception 4. (AO No. 2026-33, 4-14-2026) § 23.85.R319.2.3. Maximum height from floor. Add exception as follows: Exception: Clear opening shall be not greater than 48 inches above the floor in basements. (AO No. 2026-33, 4-14-2026) § 23.85.R319.7.1. Existing emergency escape and rescue openings. Replace section with the following: Where a change of occupancy would require an emergency escape and rescue opening, it shall be in accordance with Section R319.1. (AO No. 2026-33, 4-14-2026) § 23.85.R322.3. Care Facilities. Delete this section. (AO No. 2026-33, 4-14-2026) § 23.85.R324.6.9. Testing and labeling. Add the following exception: Exception: In lieu of labels adhered to skylights, literature provided on site is acceptable to demonstrate skylights meet the criteria of this section. (AO No. 2026-33, 4-14-2026) § 23.85.R325.1.2. Natural ventilation. Add exception 5 as follows:
5. Theater rooms are exempt from the ventilation requirements of this section. (AO No. 2026-33, 4-14-2026) § 23.85.R325.2. Bathrooms. Delete this section. Reference the adopted plumbing code.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 5010260; v11 updated 2026-09-01).
Full Breakdown
The Anchorage Municipal Code's local IRC amendments delete Section R309, Automatic Fire Sprinkler Systems, in its entirety -- the exact provision the model code uses to require sprinklers in new one- and two-family dwellings and townhouses. A companion amendment to the plumbing code, AMC 23.25.612.0, also deletes the residential fire sprinkler section and instead defers to the International Fire Code. In practice, sprinklers stay mandatory for larger multifamily, care, and institutional buildings under the fire code, but a builder putting up a standard single-family or duplex home in Anchorage does not need to install one, and the municipality issues permits without it.
Violations & Fines
No sprinkler installation is required or enforced for new one- and two-family homes; skipping one triggers no code violation, though smoke alarms and other IRC life-safety provisions still apply and are inspected.
Frequently Asked Questions
Does Anchorage require fire sprinklers in new houses?
What about bigger buildings or apartments?
Sources & Official References
Other rules in Anchorage
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