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New Jersey roofing: contractor registration, contracts and permits
Source: Local Help Stations (localhelpstations.com). Last updated November 2, 2026.
New Jersey counts roofing and siding work on homes as home improvement, so roofers fall under the Contractors’ Registration Act run by the Division of Consumer Affairs.
What New Jersey rules say
- The Division lists roofing and siding among the jobs done by home improvement contractor businesses, which must register unless the law exempts them. (source: New Jersey Division of Consumer Affairs)
- A written contract for a project over $500 must also include the contractor’s registration number. (source: New Jersey Division of Consumer Affairs)
- The contractor must give you a copy of its commercial general liability insurance policy and the insurance company’s phone number. (source: New Jersey Division of Consumer Affairs)
- Consumer Affairs advises getting all warranties and guarantees in writing, with the contract naming the brands or grades of materials to be used. (source: New Jersey Division of Consumer Affairs)
- Before you sign, ask for a lien waiver, a receipt stating that workers and material suppliers will not ask you for money once you have paid the contractor. (source: New Jersey Division of Consumer Affairs)
- Be wary if a contractor asks you to sign a statement that you will cover the costs of materials and labor if the contractor does not pay. (source: New Jersey Division of Consumer Affairs)
- If you apply for the permit yourself, put the contractor’s name and license number on the application, and do not say you are doing the work yourself, because you may give up legal protections. (source: New Jersey Division of Consumer Affairs)
- To cancel within the three business day window, put it in writing and deliver it in person or by registered or certified mail, return receipt requested, plus a photocopy by regular first class mail. (source: New Jersey Division of Consumer Affairs)
- Be wary of a contractor who approaches you unasked, claiming to be in the neighborhood with a good deal, or who lists only a P.O. Box as a business address. (source: New Jersey Division of Consumer Affairs)
- Registration with the state is not an endorsement or approval of the contractor. (source: New Jersey Division of Consumer Affairs)
This page covers statewide rules only. Cities and counties can add their own permits and licenses, so check with your local building office too.
More New Jersey topics
Sources
- New Jersey Division of Consumer Affairs (Office of the Attorney General): Home Improvement Contractor Business (Regulated Business Section) (browser) checked November 2, 2026
- New Jersey Division of Consumer Affairs (Office of the Attorney General): Consumer Brief: Hiring Home Improvement Contractors (checked November 2, 2026)
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