For a commercial or multifamily building in Wisconsin, check that the code analysis cites the Wisconsin Commercial Building Code, SPS 361 to 366, which DSPS says adopts the 2021 IBC, IECC, IMC, IFGC, and IEBC and portions of the 2021 IFC as of September 1, 2025, with plans submitted on or after November 1, 2025 required to comply. The code in effect when DSPS or a delegated municipality receives a valid plan submittal governs the review. AI can flag conflicts; the design professional and the plan reviewer decide compliance.
What does the Wisconsin Commercial Building Code cover?
The DSPS Commercial Buildings program reviews plans and inspects public buildings, places of employment, and multifamily buildings, and its plan review basics page describes the code as covering all buildings the public or employees enter and all residences of three or more units. The code is chapters SPS 361 to 366 of the Wisconsin Administrative Code: SPS 361 for administration and enforcement, SPS 362 for buildings and structures (the IBC), SPS 363 for energy conservation (the IECC), SPS 364 for heating, ventilating, and air conditioning (the IMC), SPS 365 for fuel gas appliances (the IFGC), and SPS 366 for existing buildings (the IEBC). The DSPS insert for SPS 362 states that IBC Chapter 1 is not part of the Wisconsin code, so administration follows SPS 361 instead, and that detached one- and two-family dwellings are regulated by the Uniform Dwelling Code, SPS 320 to 325, while three or more attached townhouses fall within the commercial code. Exempt buildings are listed in SPS 361.02, and DSPS’s local permit guidance summarizes them, including federally owned buildings and buildings on Indian reservations.
DSPS’s Fall 2025 newsletter says that as of September 1, 2025 the adopted codes include the 2021 IBC, IEBC, IMC, IFGC, and IECC and portions of the 2021 IFC, with NFPA 13, 13R, 14, and 20 at their 2019 editions and other referenced NFPA standards at 2021 or earlier editions. The same newsletter says DSPS delayed the hard deadline so that plans submitted on or after November 1, 2025 must comply with the updated code, while supplemental submittals such as fire suppression, fire alarm, and HVAC follow the code under which the building plan was approved. The DSPS reference page publishes inserts for each SPS chapter, dated September 1, 2025, for use with the 2021 model codes. Separately, the Summer 2026 newsletter lists September 1, 2026 as the effective date of the updated Wisconsin Electrical Code, SPS 316 (Clearinghouse Rule CR 26-016), and of the Wisconsin Plumbing Code update, SPS 381 to 387 (CR 26-019), and a September 1, 2026 DSPS release says the electrical code moves from the 2017 to the 2023 NEC. The same release says the Uniform Dwelling Code Council has recommended moving to the IRC, beginning with the 2024 edition; that is a recommendation, not an adopted rule. All checked October 29, 2026.
DSPS’s code edition applicability page says the code in effect on the date a valid plan submittal is received is the code used for review, that incomplete or inconsistent plans do not count as a valid submittal, that a preliminary consultation does not fix the code edition, and that each tenant space alteration follows the code in effect when that tenant plan is submitted. Record the submittal date with the code basis.
The program page says plan review is required for commercial, industrial, and other public buildings of 25,000 cubic feet or more, and for schools, high-hazard occupancies, and residential buildings of three or more units of any size, with separate plan sets for HVAC, fire alarm, fire detection, and fire suppression systems, industrial exhaust, and stadiums, grandstands, and bleachers. Plans go to DSPS through eSLA unless the municipality has delegated authority for a building of that size and the project is not state-owned. DSPS issues a conditional approval letter, does not issue building permits, and expects local permits to follow plan approval. The submittal needs signed and sealed plans, the SBD-8126 commercial plan review checklist, the SBD-8102 special inspection form, structural, envelope, and heat loss calculations, and specifications. DSPS accepts COMcheck for envelope and lighting only, under the 2021 IECC or, where IECC C401.2.2 is used, ASHRAE 90.1-2019. Its HVAC portions are not accepted. The SPS 363 insert keeps some Wisconsin rules in force on either energy path. Hospitals, nursing homes, and community-based residential facilities are also reviewed by the Department of Health Services. Permit routing is on the Wisconsin page, and the model codes have their own guides: IBC, IECC, IMC, IFGC, and IEBC.
Gather the code analysis, the submittal date, and each plan set DSPS reviews
Collect the cover sheet and code analysis with the SPS chapters and model code years cited, the architectural plans, sections, life safety plans, and door schedules, the accessibility plans and details, the structural drawings and calculations with the snow load basis, the HVAC drawings and heat loss calculations, the fuel gas and venting details, the fire sprinkler, standpipe, and fire alarm drawings, the energy compliance documentation (COMcheck for envelope and lighting, or the ASHRAE 90.1 path), the special inspection form, and the specifications.
Add the planned or actual date of the valid plan submittal, whether DSPS or a delegated municipality will review it, the separate system submittals still to come, and, for existing buildings, the scope of work, whether it is a tenant build-out, alteration, addition, or change of occupancy, and the code under which the building or shell was approved.
Trace the SPS chapters through the set
| Review question | Sources to compare | Decision to record |
|---|---|---|
| Code edition and submittal date | Cover sheet, code analysis, general notes, plan submittal record | Confirm the Wisconsin Commercial Building Code on the 2021 I-Codes is cited for any plan submitted on or after November 1, 2025, not the 2015 codes or an unamended 2021 or 2024 IBC. |
| Code scope | Building type, unit count, site plan, project description | Record whether the building is covered by SPS 361 to 366 or by the Uniform Dwelling Code, and whether attached townhouses are counted under the commercial code. |
| Wisconsin amendments by discipline | Structural notes, sprinkler and alarm drawings, egress plans, SPS 362 insert | Check that notes that rely on IBC sections Wisconsin changes, such as snow loads, sprinklers, fire alarms, and Type A and B units, cite the SPS 362 rule as well as the IBC section. |
| Energy path | COMcheck, envelope details, lighting and HVAC schedules, SPS 363 insert | Match the energy documents to the 2021 IECC or ASHRAE 90.1-2019 with SPS 363 changes, and do not rely on COMcheck for HVAC compliance. |
| Supplemental submittals | Fire suppression, fire alarm, HVAC, and conveyance sheets, approval letter | Confirm each system submittal cites the same code edition as the approved building plan and is listed as a separate submittal. |
| Electrical and plumbing editions | Electrical and plumbing notes, specifications, permit dates | Check that electrical notes reflect SPS 316 and the 2023 NEC for work under the September 1, 2026 rule, and ask the reviewer which plumbing code edition applies. |
Sprinkler and fire service main sheets continue in the NFPA 13 guide and the NFPA 24 guide, energy in the ASHRAE 90.1 guide, accessible details in the ICC A117.1 guide and the accessibility checklist, structural sheets in the structural drawing checklist, electrical sheets in the NFPA 70 guide, and the full set in the architectural drawing checklist. Neighboring state codes are in the Minnesota guide and the Michigan guide.
Example: a project that started on the old code and slipped
Hypothetical example. A two-story medical office building in a Green Bay suburb was drawn in summer 2025 to the 2015 IBC and IECC as Wisconsin had amended them. The submittal slipped to January 2026. The code analysis still cites the 2015 codes and SPS 361 to 366 “current edition,” the structural notes derive roof snow loads from the IBC without the Wisconsin change, the COMcheck report is used for envelope, lighting, and HVAC, and a later tenant fit-out plan for one suite cites the shell’s code year.
The code analysis cites the 2015 IBC and IECC, while DSPS says plans submitted on or after November 1, 2025 must comply with the Wisconsin Commercial Building Code on the 2021 I-Codes. The snow load notes do not reference the SPS 362 amendment, the COMcheck report is relied on for HVAC, which DSPS does not accept, and the tenant fit-out cites the shell’s code year although DSPS applies the code in effect when the tenant plan is submitted. Confirm the code basis with the reviewer and coordinate the code analysis, structural notes, energy documents, and tenant plan.
The architect confirms the code basis with DSPS plan review, the engineers revise the snow load basis and provide separate HVAC compliance documentation, and the tenant plan is updated to the code in effect on its submittal date. The finding is a citation conflict; DSPS or the delegated municipality decides compliance.
Review a Wisconsin set with Groundbook
Upload the current drawings and specifications to Groundbook, and state the edition, amendments, and review scope in your instructions. SPS 361 to 366 are free on the Wisconsin Legislature’s administrative code site, and DSPS publishes the chapter inserts and links each chapter from its codes and statutes page. Upload the SPS chapters you need as code files, with the 2021 IBC, IECC, IMC, IFGC, IEBC, and the standards they reference, using copies you are licensed to use where the license permits uploading them. See how Groundbook works with local and licensed codes.
Compare the cover sheet, code analysis, and every discipline’s general notes with the architectural, life safety, accessibility, structural, HVAC, fuel gas, fire protection, electrical, plumbing, and energy documents. Flag citations to the 2015 codes or to unamended model codes instead of SPS 361 to 366 on the 2021 I-Codes, notes that rely on IBC, IECC, IMC, IFGC, or IEBC sections the supplied SPS chapters change, COMcheck used for HVAC, NFPA editions that differ from those the code references, system drawings that cite a different code edition than the building plan, and electrical notes not tied to SPS 316. Use the supplied SPS chapters and model codes and cite both sources.
Groundbook links each potential finding to the note or sheet and to the SPS chapter or model code you uploaded. It compares what the documents state; it does not decide which edition applies or whether a plan submittal is valid.
Document review does not certify compliance, approve plans, or replace the design professional, DSPS, a delegated municipality, or the local building official.