N.J. Admin. Code § 5:23-6.3A - Flood-resistant construction

(a) For buildings in designated flood hazard areas, any work that constitutes a substantial improvement or repair of substantial damage of the existing building, as determined by the local floodplain administrator, shall comply with the applicable flood-resistant construction requirements below. As defined in the National Flood Insurance Program rules, 44 CFR 59.1, "'substantial improvement' means any reconstruction, rehabilitation, addition, or other improvement of a structure, the cost of which equals or exceeds 50 percent of the market value of the structure before the 'start of construction' of the improvement. This term includes structures which have incurred 'substantial damage,' regardless of the actual repair work performed." As defined in these Federal rules, "'substantial damage' means damage of any origin sustained by a structure whereby the cost of restoring the structure to its before damaged condition would equal or exceed 50 percent of the market value of the structure before the damage occurred."

1. Group R-5 buildings: Sections R301.2.4, R309.3, R322, R401.1, R404.1.9.5, R406.1.2.1, R408.7, M1301.1.1, M1401.5, M1601.4.10, M1701.2, M2001.4, M2101.29.1, M2105.22.1, M2201.6, and G2404.7 of the one- and two-family dwelling subcode.

2. All other buildings:

i. Building subcode: Sections 802.4, 913.2, 1108.7.3, 1202.4.4, 1402.6, 1402.7, 1605.3.1.2, 1612, 1804.5, 1805.1.2.1, 2702.1.8, 3001.3, and 3102.7.

ii. Mechanical subcode: Sections 301.16, 401.4, 501.3.1, 602.4, 603.13, 1206.9.1, 1210.8.6, and 1305.2.1.

iii. Fuel gas subcode: Section 301.11.

Notes

N.J. Admin. Code § 5:23-6.3A

Adopted by 46 N.J.R. 1685(a), effective 7/21/2014. Amended by 49 N.J.R. 1020(a), effective 5/1/2017 Amended by 53 N.J.R. 245(a), effective 2/16/2021 Amended by 55 N.J.R. 349(a), effective 3/6/2023 Administrative Change, 56 N.J.R. 1711(a), effective 7/16/2024