Updated : 04/22/2024

Overview

Mobile, Alabama, adopted the 2021 International Residential Code (IRC), including Appendices AE, AF, AH, AJ, AK, AM, AO, AQ, with amendments. Mobile, AL, Muni. Code § 28-51 (adoption) and § 28-52 (amendments). Mobile, Alabama, adopted the 2021 International Building Code (IBC), including Appendices A, B, C, E, F, G, H, I, J, N, O, with amendments. Mobile, AL, Muni. Code § 11-1 (adoption) and § 11-2 (amendments). Mobile, Alabama, adopted the 2021 International Existing Building Code (IEBC), with amendments. Mobile, AL, Muni. Code § 11-101 (adoption) and § 11-106 (amendments).

Helpful resources for Mobile, Alabama include the following.

• PLRB, Ordinance and Law Coverage Discussion for Alabama

Residential Building Code

Alabama adopted a model state residential code but it is not in force unless adopted locally.See PLRB, Alabama Building Codes for more information on state level codes.

Mobile adopted the 2021 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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Alabama Energy and Residential Code (2015 IRC)(Mobile, AL Sec. 28-51. - Code and appendices.)

...the 2021 Edition of the International Residential Code and Appendices, along with the amendments to the same contained in this ordinance, which has been on file in the office of the city clerk, pursuant to an ordinance adopted by the city council on November 8, 2022, is hereby adopted as the "Residential Building Code of the City of Mobile."...

Drip Edge

Drip Edge: yes

Ice Barrier

Are ice barriers required for Mobile ? No
Citation: Mobile, AL, Muni. Code § 28-52 (amendments).
Municipal Code https://library.municode.com/al/mobile/codes/code_of_ordinances?nodeId=CICO_CH28HO_ARTVRECO_S28-52AM
Comments:

Amend Table R301.2(1) to read as follows:

Table R301.2 (1) Climatic and Geographic Design Criteria
Ground Snow Load	Wind Design		Seismic Design Category	Subject to Damage From			Winter Design Temp	Ice Barrier Underlayment Required	Flood Hazard	Air Freezing Index	Mean Annual Temp
	Speed (MPH)	Topographic Effects		Weathering	Frost Line Depth	Termites
0	Ultimate 159	No	A	Negligible	12 inches	Needed	29	No	Yes	1500	67.5 degrees

Government Officials

Comments

Mobile, Alabama, adopted the 2021 International Residential Code (IRC), including Appendices AE, AF, AH, AJ, AK, AM, AO, AQ, with amendments. Mobile, AL, Muni. Code § 28-51 (adoption) and § 28-52 (amendments).

Amend Section R313 Automatic Fire Sprinkler System to read as follows:

Delete Section R313.1 and R313.2 in its entirety.

Add Section R313.1 Automatic fire sprinkler system to read as follows:

R313.1 Automatic Fire Sprinkler System. Shall be in accordance with the State of Alabama Energy Conservation Code. Code of Alabama 1975 Title 41: State Government—Section 41-23-85—Function of Board and Division. Mobile, AL Muni. Code § 28-52 (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.

Please refer to appendix AJ of the adopted 2021 IRC. Mobile, AL, Muni. Code § 28-52 (amendments).

Mobile, Alabama, adopted the 2021 International Existing Building Code (IEBC), with amendments. Mobile, AL, Muni. Code § 11-101 (adoption) and § 11-106 (amendments).

Commercial Building Code

Mobile adopted the 2021 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(Mobile, AL Municipal Code)

...Adoption not found...

Comments

Mobile, Alabama, adopted the 2021 International Building Code (IBC), including Appendices A, B, C, E, F, G, H, I, J, N, O, with amendments. Mobile, AL, Muni. Code § 11-1 (adoption) and § 11-2 (amendments).

Existing Buildings

Mobile, Alabama, adopted the 2021 International Existing Building Code (IEBC), with amendments. Mobile, AL, Muni. Code § 11-101 (adoption) and § 11-106 (amendments).

Other Building Codes