NEC® Adoption List

A great site to stay up to date with the latest happenings with the NEC® adoptions and to sign up for code alerts is: https://www.nema.org/standards/technical/code-alerts
Please Note: Due to the nature of the adoption process, we cannot absolutely guarantee the correctness of this page. If you know of an error, please click here to notify us.

State

NEC Edition

Comments

Alabama

2020

2020 effective 7/1/22. The codes and standards adopted by the Alabama Building Commission as the State Building Code apply to all State Buildings and Construction, Schools (Public and Private), Hotels/Motels, and Motion Picture Theaters.

Alaska

2020

Effective 4/16/20

Arizona

-

The NEC is not adopted at the state level. Each municipality is free to adopt and amend the NEC.

Arkansas

2020

With AR amendments effective 8/1/22

California

2020

Effective 1/1/23 with some CA amendments.

Colorado

2023

Effective 8/1/23

Connecticut

2020

Effective 10/1/22 with CT amendments

Delaware

2020

Effective 9/1/21

District of Columbia

2014

Effective 5/29/20

Florida

2020

Effective 12/31/2023

Georgia

2020

Effective 1/1/21.

2023 update process underway (projected 1/1/25)

Hawaii

2020

Effective 3/4/23

Idaho

2017

2017 NEC effective July 1, 2017
2023 process underway (effective date projected 7/1/24)

Illinois

-

There is no statewide adoption of the NEC. The state adopted the 2008NEC statewide effective July 1, 2011 for non-building code jurisdictions. The following local jurisdictions have adopted the 2008 NEC: Bloomington, Danville, Decatur, Glenn Ellyn, Mattoon, Normal, Rock Island, State of Illinois Capital Development, Washington.

Indiana

2008

Effective 6/2/09 Commercial, with IN amendments. 2017 one-and two-family dwellings with IN amendments.

2023 update process underway (effective date not established)

Iowa

2020

Effective 4/1/21 with IA amendments.
2023 update process underway (effective date not established).

Kansas

-

There is no statewide adoption of the NEC in Kansas. 2008 NEC was adopted by the state for state-owned buildings 2/4/11, but local jurisdictions can adopt and enforce different codes.

Kentucky

2017

The 2018 KBC and the 2018 KRC went into effect on 8/22/18.
2023 update process underway (effective date not established).

Louisiana

2020

Effective 1/1/23

Maine

2020

Effective 7/2/21 with ME amendments

Maryland

2020

Effective 5/29/23

Massachusetts

2023

Effective 2/17/23, with MA amendments

Michigan

2023

Effective 3/12/24 for Commercial. One- and two-family dwellings underway (effective date not established)

Minnesota

2023

Effective 7/1/23

Mississippi

-

Local adoption only

Missouri

-

Local adoption only

Montana

2020

Effective 6/10/22 with MT amendments

Nebraska

2017

Effective 8/1/17

Nevada

-

The NEC is adopted and enforced at the local level.State Public Works Division is on the NEC-2017 effective 7/1/18.

New Hampshire

2020

Effective 7/1/22. 2023 update process underway (effective date not established)

New Jersey

2020

Effective 9/6/22 with NJ amendments

New Mexico

2020

Effective 3/28/23

New York

2017

Effective 5/12/20.
2023 update process underway (effective date not established).

North Carolina

2020

Effective 11/1/21 with NC amendments for other than one- and two-family dwellings.
2023 update process underway (projected 1/1/25)

North Dakota

2020

Effective 1/1/21.
2023 update process underway (effective date not established).

Ohio

2023

2023 for Commercial effective 3/1/24.
Residential effective date projected 1st quarter of 2024.

Oklahoma

2020

Effective 9/14/22.
2023 update process underway (effective date projected 9/14/24).

Oregon

2023

Effective 10/1/23 with OR amendments

Pennsylvania

2017

Effective 2/14/22.
2020 update process underway (projected 7/13/25)

Rhode Island

2020

Effective 2/1/22

South Carolina

2020

Effective 1/1/23 with SC amendments

South Dakota

2020

Effective 7/4/20 with SD amendments.
2023 update process underway (effective date not established).

Tennessee

2017

Effective 10/1/18 with TN amendments

Texas

2023

Effective 9/1/23

Utah

2020

2020 for Commercial (7/1/2021); 2014 (2015 IRC) for One- and two-family dwellings (7/1/2016)

Vermont

2020

Effective 4/15/22 with VT amendments.

Virginia

2020

Effective 1/18/24

Washington

2020

Effective 10/29/20.
2023 update process underway (effective date projected 4/1/24).

West Virginia

2020

Effective 8/1/22 with WV amendments.

Wisconsin

2017

Effective 8/1/18 Commercial 8/1/18, Residential 1/1/20.

Wyoming

2023

Effective 7/1/23