Roofing in Denville Township, New Jersey

Not required

Required

The 2024 International Residential Code, New Jersey edition, adopted by the State, with the Rehabilitation Subcode for work on existing buildings. New Jersey has one construction code, the Uniform Construction Code (N.J.A.C. 5:23), which every municipality enforces; municipalities do not adopt building codes of their own (N.J.S.A. 52:27D-123.1 and 52:27D-139). N.J.A.C. 5:23-3.21(a)1 adopts the International Code Council's "2024 International Residential Code known as the IRC/2024 as the one- and two-family dwelling subcode in New Jersey subject to the modifications stated at (c) below," and 3.21(b) applies it to "detached one- and two-family dwellings and townhouses not more than three stories above grade plane in height." The section was rewritten by R.2026 d.086, "effective August 17, 2026," in the Department of Community Affairs' print of the rules "adopted and published through the New Jersey Register, Vol. 58 No. 16," and the Department's Current Construction Codes page lists the "International Residential Code/2024, NJ ed" with an adoption date of Aug 17, 2026. Other buildings fall under the building subcode, the International Building Code/2024, NJ edition (N.J.A.C. 5:23-3.14). Roof work on an existing building is held to the Rehabilitation Subcode: "Existing structures, when repaired, renovated, altered or reconstructed, shall conform to the requirements of N.J.A.C. 5:23-6, Rehabilitation Subcode" (N.J.A.C. 5:23-2.4(a)). A six-month grace period follows the adoption. N.J.A.C. 5:23-1.6(a): "For a period of six months following the operative date of a subcode revision, applicants may submit a complete permit application, including all prior approvals, to be reviewed under the code in force immediately preceding the subcode revision." The rule history gives R.2026 d.086 no date other than its effective date, so on that reading the window runs from August 17, 2026 until about February 17, 2027: a complete application filed inside it may be reviewed under either the prior edition or the 2024 edition, at the applicant's choice, and one filed after it closes is reviewed under the 2024 edition. Everything above is New Jersey state law, the same in every municipality. Locally, Chapter 195 of the Township Code establishes the Township's enforcing agency, the Division of Construction Code Enforcement and Zoning. The Construction Department's Current Building Codes page still lists the 2021 editions, including the "International Residential Code NJ version" 2021, under the heading "Effective March 3, 2019," and does not name the 2024 edition.

No permit is needed under state law to reroof a detached one- or two-family house, but the Denville Construction Department lists "Roofs (if sheathing is replaced)" and "Commercial Roof (if more than 25% replaced)" among projects that require permits and asks owners to call before beginning any work. Permits come from the Construction Department, 1 St. Mary's Place, Denville, open Monday through Friday, 8:00 AM to 4:00 PM; the department's page gives the Township's main number, 973-625-8300, with the construction official at extension 251 and inspections at extension 507. Where a roof permit is required, section 245-9 of the Township Code (amended October 16, 2018 by Ord. No. 25-18) prices alterations and repairs at $25 per $1,000 noncommercial and $30 per $1,000 commercial, minimum $75, and the Township's fee page says "Each subcode (building, electrical, plumbing, and fire) has a $75.00 minimum fee." The same page says "Zoning approval is required before construction begins." All inspection requests must be in writing, by email to [email protected] with the property address and permit number, and "If you do not receive confirmation, you are not on the schedule." Building inspections run Monday through Friday, 9:30am to 3:30pm, and plans must be on site for the inspector. Past permits can be searched in the Township's online permit database.