Common questions about window and siding contractors

Do window and siding contractors need to be registered in New Jersey?

Yes. Home improvement contractors in New Jersey register with the Division of Consumer Affairs. Their 13VH registration number should appear on contracts, invoices and ads, and you can check it through the New Jersey Division of Consumer Affairs license lookup.

What should I look for in replacement windows?

Look for ENERGY STAR certified windows rated for northern climates. Ask how the installer handles flashing, insulation around the frame and the workmanship warranty.

What should a home improvement contract include?

For home improvement work over $500, New Jersey requires a written contract with the contractor's registration number, work description, start and completion dates and total price. You also have three business days after signing to cancel.

General information for Somerset County homeowners. Requirements can change, so confirm details with the state or your town’s construction office.