Residential Building Code – 2021 IRC and Appendix AQ

Statewide, New Mexico


Name Residential Building Code – 2021 IRC and Appendix AQ
Municipality Statewide
Zoning Districts Residential
Effective Date 06/13/2023
Municipal Code NM Residential Building Code 2021
Code Link
Authority New Mexico Regulation & Licensing Department


About this appendix: Appendix AQ relaxes various requirements in the body of the code as they apply to houses that are 400 square feet in area or less. Attention is specifically paid to features such as compact stairs, including stair handrails and headroom, ladders, reduced ceiling heights in lofts and guard and emergency escape and rescue opening requirements at lofts.

Key Contacts

Construction Industries Division

2550 Cerrillos Road, Santa Fe, NM 87505

(505) 476-4700

5500 San Antonio Dr., Albuquerque, NM 87109

(505) 222-9801

505 South Main Street, Las Cruces, NM 88001

(575) 524-6320


State Source:

Updated:  December 2023 – Laura

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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