Mesa, Arizona Building Codes

Updated : 04/22/2024

Overview

Mesa, AZ adopts the following codes:

  • The International Building Code, 2018 edition, including Appendices C (Group U), E, I, and J. Mesa, AZ Muni. Code § 4-2-1 (adoption and amendments).
  • The International Residential Code, 2018 edition, including Appendix H. Mesa, AZ Muni. Code § 4-3-1 (adoption and amendments).
  • The International Existing Building Code, 2018 edition. Mesa, AZ. Muni. Code § 4-8-3 (adoption and amendments).
Helpful resources for Mesa, Arizona include the following.

Residential Building Code

Arizona has yet to adopt a statewide residential code. Local laws will control.See PLRB, Arizona Building Codes for more information on state level codes.

Mesa adopted the 2018 IRC, locally. Note that adoptions usually come with amendments. So, it is important to review those amendments in addition to the unamended model code.

You can find a copy of the model code here.

You can find information about amendments to the model code here.

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2018 IRC(Mesa, AZ 4-3-1: - INTERNATIONAL RESIDENTIAL CODE ADOPTED)

...Section 101.1 of the 2018 International Residential Code is amended to read, in its entirety, as follows: (4244, 5483) 101.1 Title. These regulations shall be known as the Mesa Residential Code, hereinafter referred to as "this code". (4244, 5483)...

Drip Edge

Drip Edge: yes

Ice Barrier

Are ice barriers required for Mesa ? No
Citation: Mesa, AZ Muni. Code § 4-3-1.
Municipal Code https://library.municode.com/az/mesa/codes/code_of_ordinances?nodeId=CD_ORD_TIT4BURE_CH3MERECO_4-3-1INRECOAD
Comments:
Ground
Snow
Load
Wind
Speed
(mph)
(e, k, l)
Seismic
Design
Category
(g)
Subject to Damage From Winter
Design
Temp
(f)
Ice
Shield
Underlayment
Required
(i)
Flood
Hazards
(h)
Air
Freezing
Index
(j)
Mean
Annual
Temp
(k)
Weathering
(a)
Frost
line
depth
(b)
Termite
(c)
Decay
(d)
0 90.3S
76,fm
B Negligible 12 Moderate to Heavy None to Slight +32°F N/A See Maricopa County 0 +71.2°F

Comments

Mesa, AZ adopts the International Residential Code, 2018 edition, including Appendix H. Mesa, AZ Muni. Code § 4-3-1 (adoption and amendments).

Existing Buildings

Existing buildings, meaning buildings that were built in accordance to code at the time of construction, typically merit extra consideration in a current updated code.

There is no mention of the adoption of Appendix J of the 2018 IRC.

Commercial Building Code

Mesa adopted the 2018 IBC, locally. Note that adoptions usually come with amendments. So, it is important to review those amendments in addition to the unamended model code.

You can find a copy of the code here.You can find information about amendments to the model code here.

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See Muni. Code(Mesa, AZ 4-2-1: - INTERNATIONAL BUILDING CODE ADOPTED)

...A facility such as the above with five (5) or fewer persons shall be classified as a Group R-3 or R-5 as applicable or shall comply with the Mesa Residential Code. A facility such as above, housing at least six (6) and not more than sixteen (16) persons, shall be classified as Group R-4. (5482)...

Comments

Mesa, AZ adopts the International Building Code, 2018 edition, including Appendices C (Group U), E, I, and J. Mesa, AZ Muni. Code § 4-2-1 (adoption and amendments).

Existing Buildings

Mesa, AZ adopts the International Existing Building Code, 2018 edition. Mesa, AZ. Muni. Code § 4-8-3 (adoption and amendments).

Other Building Codes

Mesa, AZ also adopts the following codes:

  • The National Electrical Code (NFPA-70), 2017 edition. Mesa, AZ Muni. Code § 4-4-2 (adoption and amendments).
  • The International Plumbing Code, 2018 edition, including Appendices C and E. Mesa, AZ Muni. Code § 4-5-1 (adoption and amendments).
  • The International Mechanical Code, 2018 edition. Mesa, AZ Muni. Code § 4-6-1 (adoption and amendments).
  • The International Fuel Gas Code, 2018 edition, including Appendices A, B, and C. Mesa, AZ Muni. Code § 4-7-1 (adoption and amendments).
  • The International Energy Conservation Code, 2018 edition. Mesa, AZ Muni. Code § 4-9-1 (adoption and amendments).
  • The International Swimming Pool and Spa Code, 2018 edition. Mesa, AZ Muni Code § 4-10-1 (adoption and amendments).
  • The International Fire Code, 2018 edition, including Appendices B, C, E, F, I, L, and N. Mesa, AZ Muni. Code § 7-2-1 (adoption)  with amendments at § 7-2-2.