Quick answer
In New Jersey, hire a contractor who is registered with the Division of Consumer Affairs as a Home Improvement Contractor, carries liability insurance, gives you a detailed written contract with the price and start and completion dates, pulls any required permits, and doesn’t demand large cash deposits.
Your roof, siding and windows protect everything inside your home, so choosing the right contractor matters. Use this checklist before you sign anything.
1. Confirm New Jersey registration
Home improvement contractors in New Jersey must register with the Division of Consumer Affairs. You can look up a contractor’s registration online, and the registration number should appear on their contracts and paperwork.
2. Ask for proof of insurance
Ask for a certificate of liability insurance. If a worker is hurt or your property is damaged, insurance protects you.
3. Get a detailed written contract
- Scope of work and specific materials (brand and product line)
- Total price and payment schedule
- Start and completion dates
- Who is responsible for permits, inspections and cleanup
- Warranty details — manufacturer and workmanship
4. Make sure permits are handled
Many exterior projects require a construction permit from your township. A professional contractor pulls the permit and schedules inspections.
5. Watch for red flags
- Door-to-door “storm chasers” with out-of-state plates after a storm
- Pressure to sign today or cash-only deals
- No written estimate, or a price that is far lower than everyone else
- Reluctance to share registration or insurance information
Questions about your project? Call (908) 636-9745 for a free, written estimate.
Frequently Asked Questions
How do I check if a contractor is registered in New Jersey?
Use the license and registration lookup on the New Jersey Division of Consumer Affairs website to confirm the contractor’s Home Improvement Contractor registration.
Do I need a written contract for home improvement work in NJ?
New Jersey law requires written contracts for most home improvement jobs. A good contract lists the work, materials, total price, payment schedule and start and completion dates.
Should I pay the full price up front?
No. A reasonable deposit is normal, but be cautious of anyone who wants full payment before work starts or insists on cash.