Building regulations: Building regulations
Washington: Washington State Residential Code (chapter 51-51 WAC)
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- Category
- Building regulations: Building regulations
- Kind
- Regulation pack
- Languages
- None provided. The words are as the provider wrote them.
- Author
- CadCraft
- Version
- 3, published Oct 27, 2026 Published
Adopts IRC 2021 (Washington State Building Code Council; Chapter 51-51 WAC). State amendments to the checked rules: openable area, share of floor area. Amendments were researched for stairs, ceiling height, light and ventilation only; every other rule (room size, egress, escape openings, electrical, alarms) is the base code's. Entered 2026-10-27 (research confidence: high); not yet reviewed by a…
License
CC0CC0 1.0 (public domain dedication). Anyone may use, change and share it for any purpose, with no conditions. Credit is welcome but not required.
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Regulation pack
Draft: entered from the published code, not yet reviewed by a professional. Adopts IRC 2021 (Washington State Building Code Council; Chapter 51-51 WAC). State amendments to the checked rules: openable area, share of floor area. Amendments were researched for stairs, ceiling height, light and ventilation only; every other rule (room size, egress, escape openings, electrical, alarms) is the base code's. Entered 2026-10-27 (research confidence: high); not yet reviewed by a…
- Place
- United States (state: Washington)
- Pack id
us-wa- Builds on
- United States: International Residential Code 2021
- Edition
- IRC 2021 as adopted, 2024-03-15
- In force from
- 2024-03-15
- Authority
- Adopted law
- Source date
- 2023-11-15
- Last checked
- 2026-10-27
- Source
- Washington State Building Code Council, Chapter 51-51 WAC
| Rule | Clause | Required |
|---|---|---|
| room.vent.min Washington deletes the 4% openable-area requirement and requires whole-house and local exhaust mechanical ventilation instead (WAC 51-51-0303). | – | Removed here |
A guide only: the registered professional and the local authority decide. A pack holds numbers and clause numbers, never the standard's text. The Building regulations add-on in BimCraft checks drawings against it.
Versions
All versions| Drawing | Version | Change | License | Status | Published |
|---|---|---|---|---|---|
| Version 3 | DataUpdated from the add-on's pack (23f9a8d88fae). | CC0 | Published | Oct 27, 2026 | |
| Version 2 | DataUpdated from the add-on's pack (09332afb29b8). | CC0 | Published | Oct 27, 2026 | |
| Version 1 | GeometryFirst version, from the Building regulations add-on's pack. | CC0 | Published | Oct 27, 2026 |
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