# Delaware Building Codes: Local Adoption, No Statewide Residential Code Delaware has no mandatory statewide residential code — counties and towns adopt their own IRC edition (e.g. Sussex County 2021, New Castle County 2018). - Canonical HTML: https://www.chippy.tools/building-codes/us/de/ - 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/) Delaware # Delaware Building Codes: Local Adoption, No Statewide Residential Code Delaware has no mandatory statewide residential code — counties and towns adopt their own IRC edition (e.g. Sussex County 2021, New Castle County 2018). Delaware has **no mandatory statewide residential building code**. Counties and towns each adopt their own edition of the IRC on their own timeline — Sussex County runs the 2021 IRC, New Castle County the 2018 IRC, for example — so the operative edition and any local amendments genuinely vary by jurisdiction. There’s no single “Delaware” figure for stair or guard geometry to cite here. As a starting point, the [IRC baseline](https://www.chippy.tools/building-codes/us/) is what Delaware’s counties typically build from — 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/)) — but confirm the adopted edition and any amendments with your county or town before relying on it. ## Adoption status Local Current code in force local adoption Next edition — Adoption / transition local adoption — no mandatory statewide residential code; counties/towns adopt own IRC edition (e.g. Sussex Co. 2021, New Castle 2018) 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/de/index.md)