To serve papers on someone you can’t find, you first make a documented, diligent effort to locate them, then file a motion asking the court to authorize an alternative method of service such as substituted delivery, certified mail, newspaper publication, or electronic notice. Courts will not approve any of those shortcuts unless you show you tried the normal methods and searched hard for the person. Cutting corners on the search or the paperwork is the fastest way to have your case stalled, dismissed, or reopened later.
Start With the Standard Methods
Before a judge will consider anything else, you need to try the default routes and fail. Under the federal rules, service on an individual inside the United States can be made by handing the summons and complaint to the person directly, by leaving copies at their dwelling with someone of suitable age and discretion who lives there, or by delivering the papers to an agent the person authorized to receive service. Federal courts also let you follow whatever service methods the state where the court sits or where service is made allows.1Legal Information Institute. Federal Rules of Civil Procedure Rule 4 – Summons The person making delivery must be at least 18 and not a party to the case.
State court rules vary. Check the ones that apply to your case before you assume any particular method is available.
Search Hard and Write Everything Down
The court will not grant alternative service because you knocked once and got no answer. You have to show a real effort to find the person, and the documentation of that effort is what makes or breaks the motion.
Public Records and Online Sources
Start with voter registration, property ownership records, business filings, and court records for current or recent addresses. Search online directories and social media for location clues: tagged photos, check-ins, employment listings. Talk to people who might know where the person is: relatives, former employers, landlords, mutual acquaintances.
If the basics turn up nothing, professional skip tracing tools go deeper. Commercial databases compile address histories, phone numbers, and employment details. DMV records, where legally accessible, can provide updated addresses.
Attempted Visits
Visit every known address, home and work, more than once. Vary the days and the times. Three visits on Tuesday afternoons say nothing about whether the person is home on Saturday morning. Courts want to see several attempts spread across different days and hours.
The Affidavit
Every attempt and every search goes into a sworn affidavit or declaration. For each attempted visit, record the date, time, address, and what happened: no answer, neighbor said the defendant moved, mail returned. For each database or record you checked, note what you looked at and what you did or didn’t find. This affidavit is the centerpiece of your motion. Weak documentation sinks it.
File a Motion for Alternative Service
Most alternative service methods require a court order before you use them. You request one by filing a motion, sometimes called a Motion for Alternative Service or an Application for Order of Publication, depending on the method and jurisdiction.
The motion has three jobs. Show that personal service failed despite diligent effort. Explain why the proposed method is the one most likely to actually notify the defendant. Reference the rule or statute that authorizes it. Attach the due-diligence affidavit and any supporting evidence: returned mail envelopes, screenshots of database searches, notes from people you contacted. Include a proposed order for the judge to sign. Courts often provide forms for these motions through the clerk’s office or the court website.
The Alternative Methods a Judge Can Approve
Which method the court authorizes depends on what you know about the person and what is most likely to actually reach them.
Substituted Service
Substituted service works when you know where the person lives or works but cannot physically hand them the papers. Under the federal rules you can leave copies at the individual’s home with someone of suitable age and discretion who lives there.1Legal Information Institute. Federal Rules of Civil Procedure Rule 4 – Summons Many state rules add a mailing requirement, so you also send a copy to the same address by first-class mail. Judges approve this method readily when you can show the person still lives or works at the location.
Certified Mail
Some jurisdictions allow service by certified or registered mail with a return receipt requested. This works when you have a physical address but cannot achieve personal delivery. The return receipt provides proof someone at the address received the documents. If the mail comes back unclaimed or undeliverable, you have to move to another method. State rules vary on whether certified mail alone counts as valid service or has to be combined with something else.
Service by Publication
Publication is the true last resort, for situations where you have no idea where the person is. You publish a notice of the lawsuit in a newspaper of general circulation, typically for several consecutive weeks as specified by the court’s order. Courts are reluctant to approve this method because a notice buried in a newspaper’s legal section provides only theoretical notice.1Legal Information Institute. Federal Rules of Civil Procedure Rule 4 – Summons The affidavit needs to be airtight, showing you exhausted every other avenue. The court order will name the newspaper, usually one in the area where the defendant was last known to live.
Electronic Service
Courts have increasingly allowed service through email, social media, and other digital channels when evidence shows the method is likely to reach the defendant. A judge might approve Facebook service if you can demonstrate the defendant actively uses that specific account. The key is proving the electronic contact belongs to the person and that they actually check it. A blanket request to “try social media” will not get approved. Electronic service is typically considered only after traditional methods and publication have been attempted or ruled out.
Watch the Service Deadline
In federal court you have 90 days from filing the complaint to serve the defendant. Miss it, and the court can dismiss the case without prejudice on its own initiative or on the defendant’s motion.2Legal Information Institute. Federal Rules of Civil Procedure Rule 4 – Summons – Section: Time Limit for Service Without prejudice means you can refile, but if the statute of limitations expires in the meantime, refiling may not be possible. If you can show good cause for the delay, the court must extend the time. Difficulty locating the defendant and active efforts to find them can support good cause. Simply waiting and hoping does not.
State courts set their own deadlines, ranging from 60 to 120 days or more. Some tie the clock to the filing date, others to when the summons was issued. Check your court’s rule early. The 90-day federal limit does not apply to service in a foreign country.2Legal Information Institute. Federal Rules of Civil Procedure Rule 4 – Summons – Section: Time Limit for Service
Complete Service and File Proof
Once the court approves your method, follow the order exactly. If the judge authorized certified mail, send the documents to the exact address specified and request a return receipt. If the order calls for publication, arrange with the designated newspaper to run the notice for the required number of insertions. Any deviation from the order can invalidate the service.
After service is complete, file a proof of service (sometimes called an affidavit of service or return of service) with the court. Include the method used, the date service was completed, and supporting documentation such as a copy of the published notice with dates or a signed return receipt. Filing this proof is what officially starts the defendant’s response clock. Without it, the case cannot move forward.
Situations That Change the Rules
Military Defendants
If the person you are trying to serve might be on active military duty, federal law requires an extra step before any default judgment. The Servicemembers Civil Relief Act requires you to file an affidavit stating whether the defendant is in military service, or stating that you could not determine their status.3Office of the Law Revision Counsel. 50 USC 3931 – Protection of Servicemembers Against Default Judgments You can verify active-duty status for free through the Department of Defense’s SCRA verification tool.4Defense Manpower Data Center (DMDC). Status Finder If the defendant is on active duty, the court must appoint an attorney to represent them before entering default. If status cannot be determined, the court may require a bond. A false military status affidavit is a federal crime punishable by a fine, up to a year in prison, or both.
Minors and Incompetent Persons
You cannot serve papers directly on a minor or someone declared legally incompetent. Federal rules defer to state law here.1Legal Information Institute. Federal Rules of Civil Procedure Rule 4 – Summons In most states that means serving a parent, legal guardian, or court-appointed representative. If none exists and the person cannot be found, the court may need to appoint a guardian ad litem before the case can move ahead.
Defendants Outside the United States
If the person lives abroad, different rules apply. Federal courts require service through internationally agreed methods first, most commonly the Hague Convention on the Service Abroad of Judicial and Extrajudicial Documents, which involves a formal request through a central authority in the foreign country and can take months.5Legal Information Institute. Federal Rules of Civil Procedure Rule 4 – Summons – Section: Serving an Individual in a Foreign Country If no agreement applies, you can use the foreign country’s own service procedures, a letter rogatory to foreign authorities, or personal delivery or signed-receipt mail where the foreign country’s law does not prohibit it. The court can also order other methods not prohibited by international agreement.
What It Costs
Serving papers on someone who does not want to be found gets expensive quickly. A private process server on a routine delivery typically charges between $40 and $150, but difficult cases involving skip tracing, multiple attempts, or stakeout-type work cost significantly more. Sheriff’s departments also serve civil papers, often for lower fees, though they tend to be slower and may not do creative skip tracing.
Publication is the most expensive alternative method. Between per-line or per-insertion charges and multiple consecutive weeks of publication, total costs commonly run from a few hundred dollars to over $1,000. Court filing fees for the motion are separate. If the person is abroad and Hague Convention channels apply, expect added costs for translation and processing through foreign authorities.
The Risk of a Weak Judgment
Once service is complete and the defendant’s response time expires without any filing, you can ask the clerk to enter a default and then apply for a default judgment.6Legal Information Institute. Federal Rules of Civil Procedure Rule 55 – Default and Default Judgment But a default judgment obtained after service by publication is particularly vulnerable to challenge. Because publication provides only theoretical notice, courts scrutinize these judgments closely. If the defendant later appears and shows service was defective or that they never actually learned of the case, the court can set aside the judgment on grounds including mistake, excusable neglect, fraud by the opposing party, or that the judgment is void.7Legal Information Institute. Federal Rules of Civil Procedure Rule 60 – Relief From a Judgment or Order Investing in the strongest realistic service method upfront saves a much bigger headache later.