The rules where you work $17
A first 30 days checklist, everyday forms, licenses, workers’ comp and taxes for New Jersey, with a yearly calendar. Instant PDF download.
Buy the packet: $17Digital product, all sales final. Informational only, not legal, financial, tax or business advice.
What New Jersey expects from a new trade business
New Jersey expects you registered as a home improvement contractor even if it's only a side job, with liability insurance and now additional security. Residential liens have an arbitration step that most other states don't. And sales tax can land on your labor, depending on whether a job counts as a capital improvement or a repair.
Side job or not, register with Consumer Affairs
If you make or sell home improvements on residential property in New Jersey, your business registers every year with the Division of Consumer Affairs. Part-time doesn't get you out. Neither does being a sub who never met the homeowner. Commercial-only work falls outside this act, and new home builders register separately. Electrical, plumbing and HVACR each need their own state license.
To register, file proof of $500,000 per occurrence in general liability, comp unless you're exempt, and a compliance bond or equal security: $10,000 for contracts under $10,000, climbing to $25,000 and $50,000. Check the current fee and renewal date with the Division.
A 2023 law adds individual licensing through a new board, and your business will have to employ a licensee. Those parts stay inoperative until after the board's rules, and a law approved January 20, 2026 kept that wait, so ask the Division whether it has started. Earning up to $1,500 per contract and $25,000 a year keeps you on registration.
Home contracts over $500 go in writing, signed, with your registration number, insurance certificate, price and dates. Include the notice that the customer can cancel until midnight of the third business day, and refund within 30 days.
Working unregistered can cost up to $10,000 for a first offense and $20,000 after that, and a knowing violation is a crime. A construction attorney can go over your contract forms.
Source: NJ Division of Consumer Affairs: Home Improvement Contractors FAQ · NJ Division of Consumer Affairs: Home Improvement Contractors · N.J.S.A. 56:8-138, registration · N.J.S.A. 56:8-142, insurance and bond · N.J.S.A. 56:8-151, home improvement contracts · N.J.S.A. 56:8-146, knowing violations · N.J.S.A. 56:8-13, penalties · N.J.S.A. 45:5AAA-5, licensing act start date · Home Improvement and Home Elevation Contractor Licensing Act, low-earner exception · P.L.2025, c.323 · N.J.A.C. 13:45A-16.2, home improvement practices · N.J.S.A. 45:5A-9, electrical contractors · N.J.S.A. 45:14C-12.3, plumbing · N.J.S.A. 45:16A-7, HVACR
Who to call: an attorney near you
One worker besides the owner triggers it
New Jersey has no minimum headcount. How it reaches you depends on your setup:
- Corporation: coverage is required if any individual performs services for pay, corporate officers included.
- LLC or partnership: required if anyone other than the members or partners works for it. Members and partners can choose to cover themselves.
- Sole proprietor: required if anyone other than the owner works for you.
So a one-owner LLC with no helpers isn't pulled in, but the same person as a corporation is. Failing to insure is a disorderly persons offense, and willful failure is a fourth-degree crime. Penalties can reach $5,000 for the first ten days and $5,000 for each ten days after. They can't be wiped out in bankruptcy, and corporate officers can be personally liable.
An insurance agent who writes contractors can price your trade code.
Source: NJ Department of Labor: Workers' Compensation Employer Requirements
Who to call: an insurance agent near you
Getting paid: homes run through arbitration first
Under New Jersey's Construction Lien Law, every lien rests on a written contract signed by the party you contracted with. Then the path depends on the job. Residential means a one-, two- or three-family dwelling or a unit in a development. A building of four or more units appears to be on the commercial track.
- Non-residential: lodge the lien claim with the county clerk within 90 days of your last work or materials. A 2026 bill, A889, would make that 240 days. Its status couldn't be checked and the published statute still says 90, so plan on 90.
- Residential: lodge a Notice of Unpaid Balance and Right to File Lien within 60 days of last work, and serve it when you lodge it. Within 10 days of lodging, serve a demand for arbitration, unless the parties agreed in writing to another process. Arbitration is to finish within 30 days. If you win, lodge the lien claim within 10 days of receiving the decision and within 120 days of last work. Both must be met. Miss the 10 days and the lien is invalid.
- Serve the lien claim within 10 days of lodging, on any job.
- Sue in Superior Court within 1 year of your last work, or within 30 days of a written notice demanding that you sue, whichever comes first. Miss it and you lose the lien.
The form has required wording, and home liens need strict compliance. A construction attorney can set up these forms.
Source: P.L. 2010, c.119 (amending N.J.S.A. 2A:44A-20 and -21) · N.J.S.A. 2A:44A-2, definitions · N.J.S.A. 2A:44A-5, strict compliance · N.J.S.A. 2A:44A-6, time to lodge · N.J.S.A. 2A:44A-7, service · N.J.S.A. 2A:44A-14, suit after demand · N.J.S.A. 2A:44A-20, Notice of Unpaid Balance · N.J.S.A. 2A:44A-21, residential procedure · N.J.S.A. 2A:44A-24.1, one-year suit · Assembly bill A889 (2026), status not confirmed
Who to call: an attorney near you
Capital improvement or repair changes your bill
Materials first: in New Jersey the contractor is the final consumer, so you pay sales tax to your supplier, or use tax if you buy out of state for a New Jersey job.
Then the labor question, which most states don't ask:
- Exempt capital improvement: something permanent that adds value or extends life, like a whole new roof with upgraded materials. Get a signed Form ST-8 from the owner and charge no sales tax.
- Repair or maintenance: patching part of a leaky roof, replacing a few loose tiles, repainting and power washing are taxable. If you itemize, the actual cost of materials comes off and the rest is taxed labor. If you don't itemize, the whole bill is taxed.
- Taxable capital improvements: flooring, carpeting and new lawns are on the list, among others.
You have to register with the state for tax purposes. Subs generally don't bill the prime for tax on labor. Paying an unregistered, unincorporated contractor can mean withholding 7% income tax, though homeowners are excluded. Quarterly returns are due by the 20th of the month after the quarter. A CPA who works with contractors can help you price both kinds of job.
Source: NJ Division of Taxation: Tax Topic Bulletin S&U-3, Contractors and New Jersey Taxes
Who to call: a CPA or tax pro near you
$100 to form, $75 a year
Forming an LLC in New Jersey costs $100. After you form it, file Form NJ-REG with the Division of Revenue to get your Business Registration Certificate. The annual report is $75, due by the end of your anniversary month. Miss two years in a row and a domestic LLC moves to an inactive list, though its limited liability isn't affected. No publication.
Ask a CPA whether any partnership filing fee applies to a multi-member LLC.
Pass-through profit lands on your personal return under New Jersey's graduated income tax, so your rate climbs as income climbs. When an S-corp election makes sense is a numbers question for a CPA who works with contractors.
Source: NJ Division of Revenue: Getting Registered · NJ Division of Taxation: Tax rate tables · New Jersey LLC statute, annual report fee · New Jersey LLC statute, inactive list
Who to call: a CPA or tax pro near you
Education, not legal or tax advice. Rules change. Confirm anything here with a licensed pro in New Jersey before you rely on it. Last updated November 2026.