Plainfield, NJ Accessory Structures: Carport Rules (2026)

Plainfield's Land Use Ordinance (Ch. 17, Article IX, Zone Controls) does not contain a separate carport section. Carports are treated as accessory structures under Section 17:9-19, which provides that no accessory use or structure (except as specifically permitted in the chapter) may be located in a front yard, and that accessory uses and structures must be located on the same lot as the principal use to which they are accessory. Section 17:9-19 sets minimum setbacks of three feet from each side property line and three feet from the rear property line for accessory structures unless a different rule applies. A development permit must be obtained from the Planning or Building Divisions before installation, and the New Jersey Uniform Construction Code (N.J.A.C. 5:23) requires a building permit for any framed roofed structure, including prefabricated metal carports anchored to footings or a slab. Plainfield's accessory-structure rules also cap the number of accessory structures at three per lot and limit total accessory-structure coverage to 35% of the principal building's ground area, which constrains a large carport on a lot that already has a shed and detached garage. Front-yard carports are not authorized in residential zones because Section 17:9-19 keeps accessory structures out of front yards. Carports must remain open accessory parking structures; enclosing the walls to convert them into a garage or living space requires returning to zoning and UCC review. Driveway aprons and curb cuts serving the carport must comply with Plainfield's off-street parking and driveway standards under Chapter 17 and applicable NJDOT and county standards where the property fronts a state or county roadway.