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One- and Two-Family Dwellings (Uniform Dwelling Code) Program

Administrative Code  and Commentary








The Uniform Dwelling Code (UDC) is the statewide building code for one- and two-family dwellings built since June 1, 1980. The Industry Services Division provides consultation and education concerning UDC construction standards and inspection procedures. Building materials are evaluated for conformance with standards. UDC inspection and contractor credentials are administered. The UDC is enforced in all Wisconsin municipalities.

For REScheck including loads tab click here.

Building Inspector Association Winter Update Training Presentations
Inspector Association Winter Update Training Presentation 2016

Winter Update 2015 True or False
Wall Bracing Update 2015
CBRF and Residential DHS Regulatory Model - 2015 Winter Code Updates

Highlights of the 2016 Uniform Dwelling Code Changes (Link)

Additional Code Updates

Caution – Do not use the Southern Pine design values in the new UDC Appendix A for sizing joists and rafters. They do not reflect the reduced values in the newly adopted 2015 National Design Specification for Wood Supplement. To obtain the correct values, go to http://www.awc.org/pdf/codes-standards/publications/nds/AWC-NDS2015-Supplement-ViewOnly-1411.pdf  and scroll to Table 4A. Those values may be increased 15% for repetitive joist or rafter use (due to load sharing by 3 or more members spaced 24” o.c. or less) and an additional 15% for rafter use (due to snow load duration increase).


It is suggested that you click on a PDF icon when using the UDC Appendix to properly view diagrams, tables and text.


WALL BRACING PERMANENT RULES  download the wall bracing rules and HOW TO USE guide
     Wall Bracing Rules 
     Wall Bracing Compliance Worksheet 
     Wall Bracing FAQ

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