Building regulations: Building regulations
Wisconsin: Wisconsin Uniform Dwelling Code (UDC)
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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
The state's own code, not based on the IRC: every number is its own (Wisconsin Dept. of Safety and Professional Services (DSPS); Wis. Admin. Code chs. SPS 320-325). Entered 2026-10-27 (research confidence: high); not yet reviewed by a professional.
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. The state's own code, not based on the IRC: every number is its own (Wisconsin Dept. of Safety and Professional Services (DSPS); Wis. Admin. Code chs. SPS 320-325). Entered 2026-10-27 (research confidence: high); not yet reviewed by a professional.
- Place
- United States (state: Wisconsin)
- Pack id
us-wi- Edition
- Wisconsin Uniform Dwelling Code (UDC)
- Authority
- Adopted law
- Source date
- 2024-11
- Last checked
- 2026-10-27
- Source
- Wisconsin Dept. of Safety and Professional Services (DSPS), Wis. Admin. Code chs. SPS 320-325
| Rule | Clause | Required |
|---|---|---|
| Riser height Spiral stairs 9.5 in. | SPS 321.04(2)(b)1. | At most 203.2 mm |
| Tread depth Rectangular treads. | SPS 321.04(2)(c)1. | At least 228.6 mm |
| Stair width Spiral stairs 26 in. | SPS 321.04(2)(a) | At least 914.4 mm |
| Stair headroom 6 ft 4 in. | SPS 321.04(2)(d)1. | At least 1,930.4 mm |
| Handrail height Above the tread nosing. | SPS 321.04(3)(b)1.a. | 762 mm to 965.2 mm |
| Ceiling height A room may be lower if at least half its floor area is 7 ft or more; beams may project 8 in below. | SPS 321.06 | At least 2,133.6 mm |
| Glazing, share of floor area Exception for some basement, ground-floor and above-garage rooms other than bedrooms. | SPS 321.05(1) | At least 8 % of the floor area |
| Openable area, share of floor area Or balanced mechanical ventilation of at least 1 air change an hour. | SPS 321.05(2)(a)1. | At least 3.5 % of the floor area |
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 (6490d407b459). | CC0 | Published | Oct 27, 2026 | |
| Version 2 | DataUpdated from the add-on's pack (b50dacc5d1f1). | 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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