# Alaska Residential Code: Stairs & Guards Alaska's new statewide minimum residential code took effect January 2026, based on the 2018 IRC — the stair and guard figures follow the IRC baseline. - Canonical HTML: https://www.chippy.tools/building-codes/us/ak/ - Publisher: Chippy Tools - Language: en - Updated: 2026-09-13 [Browse all topics](https://www.chippy.tools/building-codes/topics/)[Free web tools](https://www.chippy.tools/building-codes/tools/)[Printable references](https://www.chippy.tools/building-codes/printables/) [All countries](https://www.chippy.tools/building-codes/) [United States](https://www.chippy.tools/building-codes/us/) Topics Stairs - [California Guard Height: 42 Inches Under the CRC](https://www.chippy.tools/building-codes/us/ca/guard-height-42-inches/) - [IRC Stair & Guard Rules: Riser, Tread, Handrail, Guards](https://www.chippy.tools/building-codes/us/stairs/stair-and-barrier-requirements/) Footings - [US Footing Sizes & Frost Depth (IRC R403)](https://www.chippy.tools/building-codes/us/footings/footing-sizes-and-depth/) Room heights - [US Minimum Ceiling Heights (IRC R305)](https://www.chippy.tools/building-codes/us/rooms/minimum-ceiling-heights/) Ramps - [US Ramp Slopes (IRC R311.8)](https://www.chippy.tools/building-codes/us/ramps/ramp-gradients/) Wet areas - [Shower & Tub Wall Finish (IRC R307.2)](https://www.chippy.tools/building-codes/us/wet-areas/waterproofing-requirements/) By state - [Alaska](https://www.chippy.tools/building-codes/us/ak/) - [Alabama](https://www.chippy.tools/building-codes/us/al/) - [Arkansas](https://www.chippy.tools/building-codes/us/ar/) - [Arizona](https://www.chippy.tools/building-codes/us/az/) - [California](https://www.chippy.tools/building-codes/us/ca/) - [Colorado](https://www.chippy.tools/building-codes/us/co/) - [Connecticut](https://www.chippy.tools/building-codes/us/ct/) - [District of Columbia](https://www.chippy.tools/building-codes/us/dc/) - [Delaware](https://www.chippy.tools/building-codes/us/de/) - [Florida](https://www.chippy.tools/building-codes/us/fl/) - [Georgia](https://www.chippy.tools/building-codes/us/ga/) - [Hawaii](https://www.chippy.tools/building-codes/us/hi/) - [Iowa](https://www.chippy.tools/building-codes/us/ia/) - [Idaho](https://www.chippy.tools/building-codes/us/id/) - [Illinois](https://www.chippy.tools/building-codes/us/il/) - [Indiana](https://www.chippy.tools/building-codes/us/in/) - [Kansas](https://www.chippy.tools/building-codes/us/ks/) - [Kentucky](https://www.chippy.tools/building-codes/us/ky/) - [Louisiana](https://www.chippy.tools/building-codes/us/la/) - [Massachusetts](https://www.chippy.tools/building-codes/us/ma/) - [Maryland](https://www.chippy.tools/building-codes/us/md/) - [Maine](https://www.chippy.tools/building-codes/us/me/) - [Michigan](https://www.chippy.tools/building-codes/us/mi/) - [Minnesota](https://www.chippy.tools/building-codes/us/mn/) - [Missouri](https://www.chippy.tools/building-codes/us/mo/) - [Mississippi](https://www.chippy.tools/building-codes/us/ms/) - [Montana](https://www.chippy.tools/building-codes/us/mt/) - [North Carolina](https://www.chippy.tools/building-codes/us/nc/) - [North Dakota](https://www.chippy.tools/building-codes/us/nd/) - [Nebraska](https://www.chippy.tools/building-codes/us/ne/) - [New Hampshire](https://www.chippy.tools/building-codes/us/nh/) - [New Jersey](https://www.chippy.tools/building-codes/us/nj/) - [New Mexico](https://www.chippy.tools/building-codes/us/nm/) - [Nevada](https://www.chippy.tools/building-codes/us/nv/) - [New York](https://www.chippy.tools/building-codes/us/ny/) - [Ohio](https://www.chippy.tools/building-codes/us/oh/) - [Oklahoma](https://www.chippy.tools/building-codes/us/ok/) - [Oregon](https://www.chippy.tools/building-codes/us/or/) - [Pennsylvania](https://www.chippy.tools/building-codes/us/pa/) - [Rhode Island](https://www.chippy.tools/building-codes/us/ri/) - [South Carolina](https://www.chippy.tools/building-codes/us/sc/) - [South Dakota](https://www.chippy.tools/building-codes/us/sd/) - [Tennessee](https://www.chippy.tools/building-codes/us/tn/) - [Texas](https://www.chippy.tools/building-codes/us/tx/) - [Utah](https://www.chippy.tools/building-codes/us/ut/) - [Virginia](https://www.chippy.tools/building-codes/us/va/) - [Vermont](https://www.chippy.tools/building-codes/us/vt/) - [Western Australia](https://www.chippy.tools/building-codes/us/wa/) - [Wisconsin](https://www.chippy.tools/building-codes/us/wi/) - [West Virginia](https://www.chippy.tools/building-codes/us/wv/) - [Wyoming](https://www.chippy.tools/building-codes/us/wy/) Calculation guides - [Concrete Calculations: The Complete On-Site Guide](https://www.chippy.tools/building-codes/concrete/concrete-calculations-guide/) - [How to Calculate Concrete Volume for a Slab](https://www.chippy.tools/building-codes/concrete/concrete-volume-slab/) - [How Many Bags of Concrete Per m³? (20kg, 25kg, 40kg)](https://www.chippy.tools/building-codes/concrete/bags-of-concrete-per-m3/) - [Concrete for Post Holes: Volume Per Hole & Bags Needed](https://www.chippy.tools/building-codes/concrete/concrete-post-holes/) - [Concrete Mix Ratios Explained: 1:2:3, 1:2:4 & Water-Cement Ratio](https://www.chippy.tools/building-codes/concrete/concrete-mix-ratios/) - [Roof Pitch to Angle: Convert Rise/Run to Degrees & Grade](https://www.chippy.tools/building-codes/concrete/roof-pitch-to-angle/) - [Rafter Length Calculation: Run, Rise & Overhang](https://www.chippy.tools/building-codes/concrete/rafter-length/) - [Stair Rise & Run Setout: Riser, Going & the 2R+G Formula](https://www.chippy.tools/building-codes/concrete/stair-rise-and-run-setout/) - [How to Convert a Fall or Gradient: Ratio, Percentage & Degrees](https://www.chippy.tools/building-codes/concrete/fall-and-gradient-conversion/) - [Stud & Joist Spacing Takeoff: How Many at 400, 450 & 600 mm Centres](https://www.chippy.tools/building-codes/concrete/stud-and-joist-spacing-takeoff/) - [Gravel & Base Volume: Compacted Depth vs Loose-Fill Order Quantity](https://www.chippy.tools/building-codes/concrete/gravel-and-base-volume/) In this section [Browse all topics](https://www.chippy.tools/building-codes/topics/)[Free web tools](https://www.chippy.tools/building-codes/tools/)[Printable references](https://www.chippy.tools/building-codes/printables/) [All countries](https://www.chippy.tools/building-codes/) [United States](https://www.chippy.tools/building-codes/us/) Topics Stairs - [California Guard Height: 42 Inches Under the CRC](https://www.chippy.tools/building-codes/us/ca/guard-height-42-inches/) - [IRC Stair & Guard Rules: Riser, Tread, Handrail, Guards](https://www.chippy.tools/building-codes/us/stairs/stair-and-barrier-requirements/) Footings - [US Footing Sizes & Frost Depth (IRC R403)](https://www.chippy.tools/building-codes/us/footings/footing-sizes-and-depth/) Room heights - [US Minimum Ceiling Heights (IRC R305)](https://www.chippy.tools/building-codes/us/rooms/minimum-ceiling-heights/) Ramps - [US Ramp Slopes (IRC R311.8)](https://www.chippy.tools/building-codes/us/ramps/ramp-gradients/) Wet areas - [Shower & Tub Wall Finish (IRC R307.2)](https://www.chippy.tools/building-codes/us/wet-areas/waterproofing-requirements/) By state - [Alaska](https://www.chippy.tools/building-codes/us/ak/) - [Alabama](https://www.chippy.tools/building-codes/us/al/) - [Arkansas](https://www.chippy.tools/building-codes/us/ar/) - [Arizona](https://www.chippy.tools/building-codes/us/az/) - [California](https://www.chippy.tools/building-codes/us/ca/) - [Colorado](https://www.chippy.tools/building-codes/us/co/) - [Connecticut](https://www.chippy.tools/building-codes/us/ct/) - [District of Columbia](https://www.chippy.tools/building-codes/us/dc/) - [Delaware](https://www.chippy.tools/building-codes/us/de/) - [Florida](https://www.chippy.tools/building-codes/us/fl/) - [Georgia](https://www.chippy.tools/building-codes/us/ga/) - [Hawaii](https://www.chippy.tools/building-codes/us/hi/) - [Iowa](https://www.chippy.tools/building-codes/us/ia/) - [Idaho](https://www.chippy.tools/building-codes/us/id/) - [Illinois](https://www.chippy.tools/building-codes/us/il/) - [Indiana](https://www.chippy.tools/building-codes/us/in/) - [Kansas](https://www.chippy.tools/building-codes/us/ks/) - [Kentucky](https://www.chippy.tools/building-codes/us/ky/) - [Louisiana](https://www.chippy.tools/building-codes/us/la/) - [Massachusetts](https://www.chippy.tools/building-codes/us/ma/) - [Maryland](https://www.chippy.tools/building-codes/us/md/) - [Maine](https://www.chippy.tools/building-codes/us/me/) - [Michigan](https://www.chippy.tools/building-codes/us/mi/) - [Minnesota](https://www.chippy.tools/building-codes/us/mn/) - [Missouri](https://www.chippy.tools/building-codes/us/mo/) - [Mississippi](https://www.chippy.tools/building-codes/us/ms/) - [Montana](https://www.chippy.tools/building-codes/us/mt/) - [North Carolina](https://www.chippy.tools/building-codes/us/nc/) - [North Dakota](https://www.chippy.tools/building-codes/us/nd/) - [Nebraska](https://www.chippy.tools/building-codes/us/ne/) - [New Hampshire](https://www.chippy.tools/building-codes/us/nh/) - [New Jersey](https://www.chippy.tools/building-codes/us/nj/) - [New Mexico](https://www.chippy.tools/building-codes/us/nm/) - [Nevada](https://www.chippy.tools/building-codes/us/nv/) - [New York](https://www.chippy.tools/building-codes/us/ny/) - [Ohio](https://www.chippy.tools/building-codes/us/oh/) - [Oklahoma](https://www.chippy.tools/building-codes/us/ok/) - [Oregon](https://www.chippy.tools/building-codes/us/or/) - [Pennsylvania](https://www.chippy.tools/building-codes/us/pa/) - [Rhode Island](https://www.chippy.tools/building-codes/us/ri/) - [South Carolina](https://www.chippy.tools/building-codes/us/sc/) - [South Dakota](https://www.chippy.tools/building-codes/us/sd/) - [Tennessee](https://www.chippy.tools/building-codes/us/tn/) - [Texas](https://www.chippy.tools/building-codes/us/tx/) - [Utah](https://www.chippy.tools/building-codes/us/ut/) - [Virginia](https://www.chippy.tools/building-codes/us/va/) - [Vermont](https://www.chippy.tools/building-codes/us/vt/) - [Western Australia](https://www.chippy.tools/building-codes/us/wa/) - [Wisconsin](https://www.chippy.tools/building-codes/us/wi/) - [West Virginia](https://www.chippy.tools/building-codes/us/wv/) - [Wyoming](https://www.chippy.tools/building-codes/us/wy/) Calculation guides - [Concrete Calculations: The Complete On-Site Guide](https://www.chippy.tools/building-codes/concrete/concrete-calculations-guide/) - [How to Calculate Concrete Volume for a Slab](https://www.chippy.tools/building-codes/concrete/concrete-volume-slab/) - [How Many Bags of Concrete Per m³? (20kg, 25kg, 40kg)](https://www.chippy.tools/building-codes/concrete/bags-of-concrete-per-m3/) - [Concrete for Post Holes: Volume Per Hole & Bags Needed](https://www.chippy.tools/building-codes/concrete/concrete-post-holes/) - [Concrete Mix Ratios Explained: 1:2:3, 1:2:4 & Water-Cement Ratio](https://www.chippy.tools/building-codes/concrete/concrete-mix-ratios/) - [Roof Pitch to Angle: Convert Rise/Run to Degrees & Grade](https://www.chippy.tools/building-codes/concrete/roof-pitch-to-angle/) - [Rafter Length Calculation: Run, Rise & Overhang](https://www.chippy.tools/building-codes/concrete/rafter-length/) - [Stair Rise & Run Setout: Riser, Going & the 2R+G Formula](https://www.chippy.tools/building-codes/concrete/stair-rise-and-run-setout/) - [How to Convert a Fall or Gradient: Ratio, Percentage & Degrees](https://www.chippy.tools/building-codes/concrete/fall-and-gradient-conversion/) - [Stud & Joist Spacing Takeoff: How Many at 400, 450 & 600 mm Centres](https://www.chippy.tools/building-codes/concrete/stud-and-joist-spacing-takeoff/) - [Gravel & Base Volume: Compacted Depth vs Loose-Fill Order Quantity](https://www.chippy.tools/building-codes/concrete/gravel-and-base-volume/) [Building Codes](https://www.chippy.tools/building-codes/) [United States](https://www.chippy.tools/building-codes/us/) Alaska # Alaska Residential Code: Stairs & Guards Alaska's new statewide minimum residential code took effect January 2026, based on the 2018 IRC — the stair and guard figures follow the IRC baseline. Alaska adopted the **AHFC Residential Code**, based on the **2018 IRC**, as a new statewide minimum for 1–4 unit residential construction effective **1 January 2026** — administered by the Alaska Housing Finance Corporation (AHFC). Before this, Alaska had no statewide code for 1–2 family homes; enforcement was local only. No confirmed Alaska-specific stair or guard amendment has surfaced, so for a house stair the figures follow the [IRC](https://www.chippy.tools/building-codes/us/) baseline — 7¾ in max riser, 10 in min tread, 6 ft 8 in headroom, 36 in min width, 34–38 in handrails, 36 in guards, the 30 in guard trigger and the 4 in sphere. See the [US stair & guard rules](https://www.chippy.tools/building-codes/us/stairs/stair-and-barrier-requirements/) for the shared figures. Alaska’s climate makes deeper frost-footing requirements plausible locally, but we haven’t confirmed a specific statewide figure — check with your local building department. No source URL was on file for this code at time of writing, so confirm the current edition in force where you build. ## Adoption status Adopted Current code in force AHFC Residential Code (2018 IRC) Next edition — Adoption / transition statewide minimum for 1-4 unit residential per HB 80/AHFC regulation, effective Jan 1, 2026; previously no statewide 1-2 family code (local enforcement only) Last verified 2026-07-28 No state-specific variations recorded yet for this jurisdiction. This page is general information for tradespeople and is not compliance, engineering or legal advice. Requirements are subject to state and territory variations and adoption timing. Always confirm requirements with your building certifier and relevant state authority. ## Page directory ## Other languages - [es](https://www.chippy.tools/es/building-codes/us/ak/index.md)