Residential Building Code – IRC 2018 with Appendix Q

Boise (City), Idaho


Name Residential Building Code – IRC 2018 with Appendix Q
Municipality Boise (City)
Zoning Districts Residential
Effective Date 01/01/2021
Municipal Code Title 9 - Building Codes; Article B – One-and-Two-Family Dwelling Building Code
Code Link
Authority Planning and Development Services


A tiny house is a small residential dwelling of 400 sq. ft. or less in floor area, excluding the loft.  Tiny house construction requires the use of One-and-Two-Family Dwelling Building Code unless an exception is otherwise stated in Appendix Q.  Tiny houses need to be on a permanent foundation.

See Tiny Houses for more information.

Key Contacts

City of Boise
Planning & Development Services / Building Division
150 North Capitol Blvd.
Boise, ID 83702
(208) 608-7070



Updated:  January 2022 – Loran

THIA will be constantly updating the legislation data. Check back often. Suggest A Correction if you are aware of any missing or incorrect information. AND keep scrolling to learn more about getting guidance.



Building Code — Legislation that speaks to how to construct a tiny house.

Zoning Code — Legislation that speaks to how the lot will be used.


ADU — Accessory Dwelling Unit

DMV — Division of Motor Vehicles

IB — Industrialized Buildings

IRC — International Residential Code

PUD — Planned Unit Development

RV — Recreational Vehicle

SF — Single Family Dwelling

T — Transitional Housing

UDO — Unified Development Ordinance

Please Suggest a Correction if you find broken links or misinformation.

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