Serving the defendant is the step that turns a filed complaint into a live case. New Jersey handles it differently from many states: the Special Civil Part clerk mails the papers, and the plaintiff’s job is to give the court a name and an address it can reach. This article covers how that mail service works, why the address is the part that most often goes wrong, and what the options are when the mail comes back undelivered. Service follows filing a small claims case in New Jersey; for how the whole system fits together, see how New Jersey small claims court works.
The court serves the defendant, not you
New Jersey small claims cases sit in the Small Claims Section of the Special Civil Part, part of the Superior Court, Law Division. The section handles money disputes of $5,000 or less, including a renter’s demand for the return of a security deposit up to $5,000. Money claims above that amount go to the Special Civil Part’s regular docket, which handles cases up to $20,000, and larger disputes go to the Law Division, Civil Part.
When you file, you do not hire a process server or hand the papers to the defendant yourself. The clerk mails them. The official self-help materials put it plainly: the court mails the complaint and summons to the defendant, and the case cannot proceed unless the defendant receives them. The statute that sets Special Civil Part fees defines service of process as “the simultaneous mailing by ordinary and certified mail, return receipt requested,” to the defendant at the address the plaintiff gives, under N.J.S.A. 22A:2-37.1.
That single difference shapes everything else about service in New Jersey. The plaintiff controls the information; the court controls the delivery.
How service by mail works
After the clerk dockets the complaint, two copies of the summons and complaint go out to each defendant, one by ordinary mail and one by certified mail, return receipt requested. Both copies go to the same address in separate envelopes. The rule governing this is Rule 6:2-3, which treats service by mail as having the same effect as personal hand-delivery.
The certified copy creates a paper trail. When the defendant or someone at the address signs the return receipt, service is documented and complete. New Jersey also recognizes service when the certified copy is returned unclaimed but the ordinary-mail copy is not returned, on the reasoning that the ordinary copy reached the address even though no one signed for the certified one.
Once service is on track, you receive a postcard from the court showing the docket number and the date to appear. From filing to that hearing date usually runs several weeks, depending on the county’s calendar and how quickly service is completed. That date is the case’s anchor; everything else, including reservice if it becomes necessary, works backward from it.
Confirm the defendant's exact legal name
Use the legal name, not a nickname or a trade name. For a person, that is their full name. For a business, it is the registered company name, and, where the owner is personally responsible, the owner’s name as well. A judgment is only as collectible as the name on it is accurate.
Provide a current, deliverable address
The address you list is where the court mails both copies. A former address, a vacant unit, or a post office box the defendant no longer checks will stall the case. Verify the address before filing rather than after the mail bounces.
Pay the filing and service fees
As of 2026, the fee to file a small claims case is $35 for one defendant and $5 for each additional defendant, which covers the court’s mailing of the papers. A plaintiff whose income and assets fall below the court’s threshold can ask the court to waive the fee by filing a fee waiver request.
Watch for the postcard and any service notice
The court sends a postcard with your hearing date. If the clerk reports that mail service could not be completed, the court will ask you for instructions on how to reserve the defendant.
Why the name and address decide everything
Because the court serves by mail, the case rises or falls on the contact information the plaintiff supplies. The official guidance is blunt that giving the wrong address means the case cannot move forward.
The most common service failures trace back to small errors: an old apartment number, a business sued under its storefront name instead of its registered name, or a defendant who has moved. If you are unsure of a current address, locating one before filing is more reliable than filing and hoping the mail finds the defendant.
When mail service fails
When both the certified and ordinary copies come back undelivered, the clerk notifies the plaintiff that service was not completed and asks for instructions. At that point a few paths exist.
The first is a corrected address. If the mail failed because the address was wrong or stale, supplying a better one lets the clerk try again, this is called reservice, and the statute sets a court-officer reservice fee of $3.00 plus mileage for each defendant under N.J.S.A. 22A:2-37.1.
The second is personal service. A Special Civil Part Officer, a court officer assigned to the county, can hand-deliver the summons and complaint to the defendant. The fee for an officer to serve process is $7.00. Personal delivery often succeeds where mail did not, because it does not depend on the defendant retrieving mail.
A party cannot serve their own papers. Service is carried out by the clerk’s mailing or by a court officer or other authorized adult who is not a party to the case.
Serving a business or an out-of-state defendant
A business defendant is served the same way, by mail to an address the plaintiff provides, but the right address matters even more. For a corporation or LLC, the registered agent’s address on file with the State is the most reliable target, because that agent exists specifically to receive legal papers. Suing a company under its informal storefront name, rather than its registered legal name, is a frequent reason a judgment later proves hard to collect.
A defendant outside New Jersey can still be served by mail at an out-of-state address, provided a New Jersey court has jurisdiction over them, for instance, because the dispute arose from business they did in the state. Service on a distant defendant is mechanically the same; the practical questions of jurisdiction and later collection are what differ.
After the defendant is served
Once the defendant is served, the case proceeds toward the date printed on the court’s postcard. The defendant can file an answer and appear, or can ignore the case.
If a properly served defendant does not appear, the plaintiff can ask the court to enter a default judgment. A request for default requires an affidavit stating that the defendant is not in active military service, a protection that exists under the federal Servicemembers Civil Relief Act, 50 U.S.C. § 3931. Service is the foundation that makes a default judgment possible: without valid service, there is no judgment to enter.
With service complete, the next stage is the hearing itself, see preparing for a New Jersey small claims hearing.
Frequently asked questions
Can I serve the defendant myself?
No. In New Jersey small claims, the Special Civil Part clerk serves the defendant by mail. If mail service fails, a Special Civil Part Officer or another adult who is not a party to the case can personally deliver the papers. A plaintiff cannot serve their own process.
Does the defendant have to sign for the certified mail for service to count?
Not necessarily. A signed certified-mail receipt is the clearest proof of service. New Jersey also treats service as effective when the certified copy is returned unclaimed but the ordinary-mail copy is not returned as undeliverable, under Rule 6:2-3.
How long after filing is the defendant served?
The clerk mails the summons and complaint shortly after the complaint is docketed, and the court sends the plaintiff a postcard with the docket number and hearing date. The exact timing varies by county and by how quickly the mail is delivered or returned.
What happens if I gave the court the wrong address?
The mail comes back undelivered and the defendant is not served, so the case cannot move forward. The clerk notifies the plaintiff and asks for reservice instructions. Supplying a corrected address, or arranging personal service by a court officer, lets the court try again.
What if I don’t know where the defendant lives?
The court needs a deliverable address to serve the defendant, so locating a current address is part of preparing the case. Public records, the defendant’s business filings, and a registered agent’s listed address are common starting points. The court does not investigate a defendant’s whereabouts for the plaintiff.
Can a defendant who was served just ignore the case?
A served defendant who does not appear risks a default judgment. The plaintiff can request one after providing the required affidavits, including a statement about the defendant’s military status. Ignoring a properly served small claims summons does not stop the case from proceeding.