Basement Waterproofing in Bergen County, NJ
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Pros serving Bergen County, NJ
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What basement waterproofing cost in Bergen County
| Job | Typical cost | Data from |
|---|---|---|
| Basement waterproofing (overall) | $3,000–$10,000 per job | National |
| Interior perimeter drain (drain tile) | $40–$120 per linear ft | National |
| Sump pump installation | $600–$2,500 per job | National |
| Foundation crack epoxy injection | $250–$1,000 per crack | National |
| Interior waterproof paint / sealant | $1–$8 per sq ft | National |
| Basement dehumidifier (installed) | $1,000–$2,800 per job | National |
"National" figures are US averages, not local prices. Last updated November 4, 2026. Sources: Fixr, 2026. Full cost guide
How to choose a basement waterproofing contractor in Bergen County
Basement waterproofing is home improvement work, so the contractor must be registered with the state. 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.
Waterproofing often touches other trades. A sump pump may need a new circuit, which needs a licensed electrician, and tying a drain into the house plumbing needs a licensed plumber. Ask who will do those parts and get their license numbers too.
Ask each company to explain the cause of your water problem before they price a fix: a cracked wall, a high water table and a missing gutter extension need very different solutions. Get the warranty in writing, including whether it transfers to a buyer if you sell. 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?
- What do you think is causing the water, and why?
- Who does any electrical or plumbing work on this job?
- Is the warranty written, and does it transfer if I sell?
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).
- Scare tactics about mold or foundation collapse with no evidence. False claims that a home needs repair are prohibited (N.J.A.C. 13:45A-16.2).
- A “lifetime warranty” that isn’t written into the contract. NJ rules require any guarantee to be stated in the contract and copies given to you (N.J.A.C. 13:45A-16.2).
New Jersey licensing
What to check: New Jersey Home Improvement Contractor (HIC) registration number (format not confirmed), plus the plumbing or electrical license of whoever does that part of the work.
New Jersey has no separate state license for basement waterproofing. 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. If the job includes plumbing or electrical work, such as a new circuit for a sump pump, that part must be done by a licensed plumber or electrical contractor, whose seal goes on the permit application (N.J.A.C. 5:23-2.15). To verify, use the Consumer Affairs license lookup (Business Search, license type “Home Improvement Business Contr”).
Permits
The Uniform Construction Code doesn’t list waterproofing as its own category, so permits depend on what the job involves. Adding to, altering or relocating drainage, sewer or similar piping, or electrical wiring, is excluded from ordinary maintenance. So is cutting loadbearing walls or any work affecting structural safety (N.J.A.C. 5:23-2.7). That work needs a permit from the local construction office (N.J.A.C. 5:23-2.14). A radon mitigation system with no new electrical work is minor work (N.J.A.C. 5:23-2.17A). Interpretation varies by town, especially for interior drain systems and sump pumps, so have the contractor confirm with your construction office.
Basement Waterproofing by town
Common questions
Do I need a permit for basement waterproofing in NJ?
It depends on the work. Under the Uniform Construction Code, adding or altering drainage or similar piping, adding electrical wiring, or doing anything that affects structural safety is not ordinary maintenance and needs a permit from your local construction office. Purely cosmetic work, such as painting, doesn’t. Towns can differ on interior drain and sump systems, so ask your construction office before work starts. (Source)
Who can install a sump pump circuit or tie a drain into plumbing?
The Uniform Construction Code says plumbing and electrical work may be done only by people licensed for it, except a single-family homeowner working on their own home. A waterproofing company registered as a home improvement contractor may handle the excavation and drainage membrane, but a new circuit needs a licensed electrical contractor. Any plumbing portion needs a licensed master plumber. (Source)
Does a basement waterproofing warranty have to be in writing?
Yes. New Jersey consumer rules require a home improvement contract over $500 to include a statement of any guarantee or warranty. The seller must also give you written copies of guarantees when presenting the bid and when the contract is signed. Read the warranty for transferability and exclusions before signing. (Source)
Do I need a permit to install a radon mitigation system?
Under the Uniform Construction Code, installing a radon mitigation system is minor work if it needs no new electrical work and doesn’t penetrate a fire-resistance-rated assembly. Minor work still needs a permit and inspection, but the contractor can start after notifying the construction office and must file the application within five business days. Systems that need new wiring involve an electrical permit too. (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 basement waterproofing 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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