New Jersey · Building code

The building code in force in New Jersey now.

Uniform Construction Code (N.J.A.C. 5:23): IBC/2024 NJ ed., IRC/2024 NJ ed., IMC and IFGC/2024, National Standard Plumbing Code/2024, NEC/2023, IECC/2024 + ASHRAE 90.1-2022; effective Aug 17, 2026. Enforced by Municipal construction officials (local enforcing agencies, N.J.A.C. 5:23-4); DCA Division of Codes and Standards adopts the UCC and performs enforcement activities reserved to the Department (N.J.A.C. 5:23-3.11). Checked on the primary source; the state record was last reviewed 2026-11-12.

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Building code in New Jersey

Checked on the source

In force

Uniform Construction Code (N.J.A.C. 5:23): IBC/2024 NJ ed., IRC/2024 NJ ed., IMC and IFGC/2024, National Standard Plumbing Code/2024, NEC/2023, IECC/2024 + ASHRAE 90.1-2022; effective Aug 17, 2026

Adopted Jul 15, 2026 as R.2026 d.086 (DCA adoption notice, read Oct 20, 2026), effective Aug 17, 2026, replacing the 2021 I-codes in effect since Sep 6, 2022. For six months after a subcode revision takes effect, complete permit applications may be reviewed under the prior code (N.J.A.C. 5:23-1.6).

Source: primary document

Who enforces it

Municipal construction officials (local enforcing agencies, N.J.A.C. 5:23-4); DCA Division of Codes and Standards adopts the UCC and performs enforcement activities reserved to the Department (N.J.A.C. 5:23-3.11)

Statewide layer. County and city amendments sit on top; confirm the local office for the address.

What changes next

Grace period ends Feb 17, 2027

Grace period for complete permit applications under the 2021 codes ends Feb 17, 2027 (six months after the Aug 17, 2026 operative date per N.J.A.C. 5:23-1.6, re-read Oct 15, 2026; date computed). DCA current-codes page lists no pending proposals

Dated items

Next 24 months

Dec 12, 2026

Water management programs under New Jersey's Legionnaires' disease law must be implemented (written program was due Sep 12, 2026): hotels and motels with central hot water serving 25+ units, residential buildings of six or more floors with central hot water, senior and subsidized housing of 25+ units, and any building with a cooling tower, evaporative condenser, spa, pool, fountain or mister; program per ASHRAE 188-2018, notice posted, records kept five years on site; penalties up to $2,000, $5,000, $10,000NJ Department of Health · P.L.2024, c.66 (N.J.S.A. 26:1A-140)

Confirmed date

Feb 17, 2027

End of the six-month UCC grace period: complete permit applications can no longer be reviewed under the 2021 codes; 2024 I-code subcodes (IBC/2024 NJ ed. etc.) mandatory (date computed: Aug 17, 2026 effective date + six months per N.J.A.C. 5:23-1.6)NJ Department of Community Affairs, Division of Codes and Standards

Confirmed date

What a building has to do

1 recurring duties

These apply when the building has the equipment or fits the type named. The frequency is the standard one; your local official can set a stricter one, so confirm it for the address.

Monthly

Accessible pool entry: a pool lift or sloped entry in place and working whenever the pool is open (pools with 300 or more linear feet of wall need two accessible entries; a spa needs one: lift, transfer wall or transfer system); the rule sets no inspection interval; a monthly check that it works and is charged is common practice2010 ADA Standards §242 and §1009; 28 CFR 36.211 · U.S. Department of Justice (enforced through complaints and lawsuits) · Checked against the source 2026-09-28.

Questions about the building code in New Jersey

Which building code applies in New Jersey today?

Uniform Construction Code (N.J.A.C. 5:23): IBC/2024 NJ ed., IRC/2024 NJ ed., IMC and IFGC/2024, National Standard Plumbing Code/2024, NEC/2023, IECC/2024 + ASHRAE 90.1-2022; effective Aug 17, 2026. Adopted Jul 15, 2026 as R.2026 d.086 (DCA adoption notice, read Oct 20, 2026), effective Aug 17, 2026, replacing the 2021 I-codes in effect since Sep 6, 2022. For six months after a subcode revision takes effect, complete permit applications may be reviewed under the prior code (N.J.A.C. 5:23-1.6).

Who enforces the building code in New Jersey?

Municipal construction officials (local enforcing agencies, N.J.A.C. 5:23-4); DCA Division of Codes and Standards adopts the UCC and performs enforcement activities reserved to the Department (N.J.A.C. 5:23-3.11).

What changes next for the building code in New Jersey?

Grace period ends Feb 17, 2027. Grace period for complete permit applications under the 2021 codes ends Feb 17, 2027 (six months after the Aug 17, 2026 operative date per N.J.A.C. 5:23-1.6, re-read Oct 15, 2026; date computed). DCA current-codes page lists no pending proposals