Windows, Doors & Siding in Bergen County, NJ
Every window, door and siding contractor listed here is a registered New Jersey Home Improvement Contractor with insurance we've seen. Compare pros, check typical costs and get quotes.
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Pros serving Bergen County, NJ
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What window, door & siding contractors cost in Bergen County
| Job | Typical cost | Data from |
|---|---|---|
| Window replacement, per installed window (range across frame materials, aluminum to fiberglass; average $517) | $453–$564 per window | National |
| Window replacement, vinyl (average job) | about $24,065 per project | NY metro |
| Window replacement, wood (average job) | about $29,531 per project | NY metro |
| Entry door replacement, steel (average job) | about $2,698 per project | NY metro |
| Siding replacement, vinyl (average job) | about $21,223 per project | NY metro |
| Siding replacement, fiber cement (average job) | about $25,708 per project | NY metro |
| Vinyl siding, installed | $3–$12 per sq ft | National |
"National" figures are US averages, not local prices. Last updated November 4, 2026. Sources: This Old House, 2026; JLC Cost vs. Value, 2025; Fixr, 2026.
How to choose a window, door or siding contractor in Bergen County
Window, door and siding installers must be registered as New Jersey Home Improvement Contractors. Ask for their New Jersey Home Improvement Contractor registration number and look it up on the state's license lookup (Business Search, license type "Home Improvement Business Contr"). The number must appear on their ads, contracts and work vehicles. Ask for a certificate of insurance too: registered contractors must carry at least $500,000 per occurrence in general liability coverage.
Same-size window and door replacements and most siding jobs don't need a construction permit in New Jersey, but enlarging an opening or changing the structure does. Ask the contractor whether your job changes any openings, and check with your town if you live in a historic district.
Compare quotes on the product line and model, how the old units are removed, how trim and flashing are handled, and what the installation warranty covers separately from the manufacturer's warranty. Any job over $500 needs a written, signed contract that lists the work, the main materials, start and finish dates and the total price. You can cancel for any reason until midnight of the third business day after you get your copy.
Questions to ask
- What is your HIC registration number?
- Which product line and model are you quoting?
- Are you changing any openings, and does that need a permit?
- What does your installation warranty cover?
Red flags
- No HIC registration number on the contract, estimate, ads or truck. N.J.S.A. 56:8-144 requires it on all of them (source).
- No written contract for a job over $500, or a contract missing the bold “NOTICE TO CONSUMER” three-day cancellation box (N.J.S.A. 56:8-151, source).
- Won’t attach a copy of its $500,000 general liability insurance certificate and the insurer’s phone number to the contract, which state law requires (source).
- Asks for final payment, or a signed certificate of completion, before the work is finished. State consumer rules prohibit this (N.J.A.C. 13:45A-16.2).
- A contract without product names, models and sizes. NJ rules require a description of the principal products and materials (N.J.A.C. 13:45A-16.2).
- Plans to resize openings or cut framing for bigger windows without a permit (N.J.A.C. 5:23-2.7).
New Jersey licensing
What to check: New Jersey Home Improvement Contractor (HIC) registration number. Its format was not confirmed.
New Jersey has no separate state license for window, door or siding installers. Instead, under the Contractors’ Registration Act the business must register every year with the Division of Consumer Affairs as a Home Improvement Contractor (HIC). It must also carry at least $500,000 per occurrence in commercial general liability insurance, plus workers’ compensation unless exempt. The registration number has to appear on its contracts, ads, business documents and commercial vehicles. A 2024 licensing law will add individual licenses once its new board adopts rules. To verify, use the Consumer Affairs license lookup (Business Search, license type “Home Improvement Business Contr”).
Permits
Under the Uniform Construction Code, replacing a window or door (including storm windows and doors) in the same opening without altering its dimensions or framing is ordinary maintenance, so no permit is needed. Replacement egress windows must not reduce the required height, width or net clear opening (N.J.A.C. 5:23-2.7). Repairing or replacing existing siding on one- and two-family homes is also ordinary maintenance, except polypropylene siding. Enlarging openings, adding new ones, or work on fire-rated assemblies needs a permit from the local construction office (N.J.A.C. 5:23-2.14). Permits come from your town’s construction office, and each municipality sets its own fees by ordinance (N.J.A.C. 5:23-4.17).
Window, Door & Siding Contractors by town
Common questions
Do I need a permit to replace windows in New Jersey?
Not if each new window goes in the same opening without changing its dimensions or framing. The Uniform Construction Code calls that ordinary maintenance, with no permit or inspection. Replacement egress windows must keep at least the required height, width and net clear opening of the old ones. Enlarging an opening or adding a new one needs a permit. (Source)
Do I need a permit to replace siding?
For one- and two-family homes, repairing or replacing existing siding is ordinary maintenance under the Uniform Construction Code, so no permit is required. The exception is polypropylene siding, which isn’t covered. For other building types, like-material repair or replacement is ordinary maintenance only up to 25% of the total exterior wall area. (Source)
Do I need a permit to replace an exterior door?
Replacing a door, including a storm door, in the same opening without altering the opening’s dimensions or framing is ordinary maintenance under the Uniform Construction Code, so no permit is needed. Doors in fire-resistance-rated assemblies are excluded. Widening an opening or adding a new doorway changes the framing and requires a permit. (Source)
What does New Jersey require in a written home improvement contract?
Any home improvement contract over $500, and every change to it, must be in writing and signed by all parties. It must list the contractor’s legal name, address and registration number. It must include a copy of the liability insurance certificate and the insurer’s phone number, and the total price including finance charges. Consumer Affairs rules also require a description of the work and main materials, start and completion dates, and any warranty terms. (Source)
Can I cancel a home improvement contract after I sign it in New Jersey?
Yes. You can cancel a home improvement contract for any reason before midnight of the third business day after you receive a copy. The cancellation must be in writing, sent by registered or certified mail (return receipt requested) or delivered in person to the address in the contract. The contractor must refund everything you paid within 30 days of receiving your notice. Contracts must print this right in a bold notice. (Source)
How do I check whether a window or siding contractor is registered in New Jersey?
Use the Division of Consumer Affairs license verification site. Choose Business Search and the license type “Home Improvement Business Contr”, then search by business name or city. Make sure the name matches the contract and the registration is current. Registered contractors must also print their registration number on contracts, ads and commercial vehicles, so compare that number with the lookup result. (Source)
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