New Hampshire Service of Process Rules for Civil Lawsuits

Service of process is the mechanism by which a defendant receives notice of a civil lawsuit. In New Hampshire, proper service is a constitutional requirement and a jurisdictional foundation for civil litigation. Failure to serve correctly can result in dismissal of your entire case, regardless of its merits. New Hampshire courts strictly construe service rules, so understanding the specific requirements under the New Hampshire Rules of Civil Procedure (NHRCP) and relevant statutes is critical.

Personal Service (Hand Delivery)

Personal service is the most reliable and preferred method of service under New Hampshire law. It involves physically delivering a copy of the summons and complaint directly to the defendant in person.

Under NHRCP 4(d)(1), personal service must include handing the papers to the defendant. The serving process server must establish that the defendant actually received the papers — not merely that papers were left at a location where the defendant might be.

Key requirements for valid personal service:

The defendant must be identified and served in person

The server must hand the papers directly to the defendant

The server should ask the defendant's name to confirm identity (though slight errors in name spelling do not necessarily invalidate service if identity is clear)

Service can occur anywhere the defendant is found — on the street, at home, at work, in a vehicle, or at any location

Important limitation: Service cannot be made at an improper hour. While New Hampshire does not specify exact hours in statute, courts recognize that service before 6:00 a.m. or after 9:00 p.m. may be improper absent emergency circumstances.

Substituted Service

When personal service is impractical or the defendant is evading service, substituted service allows papers to be left with another person. New Hampshire governs substituted service under NHRCP 4(d)(2).

At the defendant's residence:

Papers may be left with "a person of suitable age and discretion" residing at the defendant's dwelling house or usual place of abode

"Suitable age and discretion" typically means a resident capable of understanding the significance of the papers — generally an adult, though case law suggests minimum age is flexible based on circumstances

The server must make reasonable inquiry to confirm the person's identity and residence status

Service is complete upon leaving the papers, but is only valid if the defendant actually resides there

At the defendant's place of business:

Papers may be left with a person in charge of the defendant's office or place of business

The person receiving the papers must be an employee or authorized representative

Service is valid only at locations where the defendant regularly conducts business

Critical New Hampshire requirement: NHRCP 4(d)(2) requires that after substituted service, the server must send a copy of the summons and complaint to the defendant by certified mail. This is a mandatory step unique to New Hampshire — mere substituted service without follow-up mailing is defective. The mailing must occur within a reasonable time after substituted service is made.

Service by Mail

New Hampshire permits service by mail in certain circumstances, though rules are more restrictive than in some other states.

Under NHRCP 4(d)(7), service may be made by mailing a copy of the summons and complaint by certified mail, restricted delivery, return receipt requested. This method requires:

Use of certified mail (not regular or first-class mail alone)

The green return receipt card must be requested and returned to confirm delivery

Papers must be mailed to the defendant's last known address

Service is complete when the defendant receives the mail, as evidenced by the signed return receipt

Service by regular mail alone is not permitted under the NHRCP unless the defendant has agreed in writing to accept service by regular mail or has waived service. Some defendants may execute a waiver of service under NHRCP 4(d)(8), which allows service by ordinary mail or even email if both parties agree.

Practical note: If certified mail is returned as undelivered or refused, service by mail is ineffective, and the plaintiff must pursue an alternative method.

Service by Publication

Service by publication is a remedy of last resort in New Hampshire, used only when the defendant cannot be located despite diligent efforts.

Procedural requirements under NHRCP 4(d)(5) and RSA 510:4:

The plaintiff must file an affidavit of diligence demonstrating that personal service, substituted service, and service by mail have been attempted but have failed

The affidavit must detail specific efforts made to locate the defendant (inquiries with relatives, employers, neighbors, postal service, known associates, etc.)

The plaintiff must obtain a court order authorizing service by publication before publication begins — service by publication cannot be accomplished without prior judicial approval

Once the order is granted, the summons and complaint must be published in a newspaper of general circulation in the county where the action is pending, or in another newspaper with statewide circulation if approved by the court

Publication must occur once a week for three consecutive weeks (three separate publications minimum)

After the final publication, the plaintiff must file an affidavit of publication with the court

Key distinction: New Hampshire requires prior court authorization, which distinguishes it from jurisdictions permitting service by publication without advance approval.

Service on Corporations and Limited Liability Companies

Service on business entities requires identification of the proper person or entity to receive service.

For corporations incorporated in New Hampshire or registered to do business in New Hampshire:

Service must be made on the registered agent designated with the New Hampshire Secretary of State, if one is appointed (RSA 293-A:5-01)

If the corporation has no registered agent in New Hampshire, service may be made on the president, treasurer, secretary, or any director of the corporation at their principal office or place of business

Alternatively, service may be made on the Secretary of State if the corporation has not appointed a registered agent or cannot be found (RSA 293-A:5-03)

For limited liability companies:

Service follows similar rules under RSA 304-C:5-01

The registered agent, if appointed, is the proper person for service

If no registered agent exists, service may be made on a member or manager at the principal office

For foreign corporations or LLCs doing business in New Hampshire:

Service on the registered agent is required if one has been appointed

If no agent is appointed, service may be made on the Secretary of State (RSA 293-A:15-01 and 304-C:15-01)

Service on Government Entities

Service on government defendants involves special procedures and requirements.

State of New Hampshire:

Service must be made on the Attorney General or an attorney in the Attorney General's office (RSA 21:34-a)

Alternatively, service may be made on the head of the state agency being sued

County governments:

Service should be made on the register of deeds of the county, or on the county attorney, or on the board of county commissioners

Specific county procedures may vary; check with the county clerk

Municipal governments (city or town):

Service must be made on the town or city clerk, or on the town or city manager if one exists (RSA 21:34-a)

Alternatively, service may be made on the selectmen or other principal municipal officer

Notice to Attorney General: In many cases involving government entities, the Attorney General must be notified of the lawsuit, even if not the primary recipient of service, as required by statute.

Service on Out-of-State Defendants — New Hampshire Long-Arm Statute

New Hampshire's long-arm statute is found in RSA 510:4 and allows courts to exercise jurisdiction over non-resident defendants in limited circumstances.

Bases for service on out-of-state defendants:

The defendant engaged in business activity within New Hampshire (e.g., operating a business, making sales, providing services)

The defendant committed a tort or breach of contract in New Hampshire

The defendant's conduct elsewhere caused injury in New Hampshire (e.g., product liability, defamation)

The defendant owns property in New Hampshire and the suit relates to that property

The defendant has agreed to jurisdiction through a contract or prior submission

Service methods for out-of-state defendants:

Summons may be served on the defendant anywhere in the United States through personal service, substituted service, or certified mail

Alternatively, a copy may be served on the Secretary of State (RSA 510:4) if the defendant has no agent in New Hampshire or cannot be found

Service on the Secretary of State requires sending a copy by certified mail to the defendant's last known address, and filing proof with the court

Interstate compacts: New Hampshire is a signatory to the Uniform Interstate Depositions and Discovery Act, which affects procedures for obtaining evidence from out-of-state witnesses and defendants.

Who Can Serve Process in New Hampshire

New Hampshire law permits service to be made by various parties, not exclusively by sheriffs.

Authorized servers under NHRCP 4(c):

Any person not a party to the action who is at least 18 years old may serve process

This includes private process servers, attorneys, law firm staff, or any other adult

Sheriffs and constables may serve but are not the exclusive servers

Substitute servers appointed by the court can serve if the regular server cannot

Important limitation: The server cannot be a party to the action or have a financial interest in the outcome. An attorney representing a party can serve, but having a disinterested party serve is often preferable to avoid appearance of impropriety.

No special training or license required: New Hampshire does not require process servers to be licensed or certified, though many private servers carry liability insurance.

Fee structures: While New Hampshire does not regulate process server fees, plaintiffs are responsible for paying reasonable service costs.

Time Limits for Completing Service After Filing

The timing of service is strictly regulated under NHRCP 4(m).

The summons and complaint must be served within 90 days of filing the complaint with the court

If service cannot be completed within 90 days, the plaintiff must file a motion for extension prior to expiration

Extensions are granted "for good cause" — typically reasonable diligence efforts but continued inability to locate the defendant

Multiple extensions may be granted; courts are generally lenient if the plaintiff demonstrates good-faith effort

Failure to serve within 90 days (or extended period) results in automatic dismissal of the case without prejudice, meaning the plaintiff may refile

Practical strategy: Begin service efforts immediately upon filing. Many plaintiffs request protective extensions preemptively if they anticipate difficulty locating the defendant.

Proof of Service and Return of Service Requirements

After service is completed, the server must file proof of service with the court.

Affidavit of service requirements:

The server must execute an affidavit of service stating:

- The date, time, and place of service
- The defendant's name and identification information
- The method of service used
- The person served (if substituted service)
- That the summons and complaint were delivered

The affidavit must be sworn under oath before a notary public or court officer

NHRCP 4(l) requires the affidavit to be filed with the court, typically with the complaint or shortly after service

Specific proof for different methods:

Personal service: Simple affidavit stating direct delivery to defendant

Substituted service: Affidavit identifying the person receiving papers, their relationship to the defendant, and certified mail proof

Service by mail: Return receipt from certified mail (green card) must be attached as exhibit

Service by publication: Affidavit of publication from the newspaper, including copies of the published notice

Defective affidavits: Minor defects in the affidavit do not invalidate service if the defendant was actually served. However, vague or conclusory affidavits may prompt the court to request additional information.

Defective Service — Motion to Quash

A defendant who believes service was improper may file a motion to quash service of process.

Procedure under NHRCP 12(b)(5):

The motion must be filed before or with the answer (or other responsive pleading)

Filing a motion to quash does not waive other defenses and does not constitute a general appearance

The motion must specifically identify why service was defective

The burden of proof is on the defendant to show that service was defective; if the affidavit of service is regular on its face, it constitutes prima facie evidence of proper service

Common grounds for quashing service:

Service was never actually made (papers were left at wrong address or not delivered to defendant)

Service was made on wrong person (not the defendant, not a suitable substitute, not registered agent)

Service was made in violation of the long-arm statute (no personal jurisdiction over defendant)

Improper service method used (e.g., regular mail when certified mail required)

Court discretion: If a defendant quashes service and service cannot be cured, the entire case may be dismissed. However, courts prefer to allow plaintiffs a reasonable opportunity to re-serve properly rather than dismiss on jurisdictional grounds.

Evasion of Service — Alternative Methods Courts May Authorize

When a defendant actively evades service, courts have authority to authorize alternative service methods.

Evasion standards:

Evasion occurs when a defendant refuses to accept papers, hides, leaves jurisdiction to avoid service, or repeatedly avoids being present when service is attempted

The plaintiff must file an affidavit documenting evasion attempts, showing specific dates, times, locations, and circumstances of failed attempts

Court-authorized alternatives:

Nail and mail: Court may authorize leaving papers attached to defendant's door or at home, followed by certified mail

Electronic service: Court may authorize email or text message service if the defendant has communicated by such means or if location is unknown

Service through third party: Court may authorize service on defendant's attorney, accountant, family member, or business associate

Service on defendant's residence by alternative means: Leaving papers with household occupant even if that person doesn't meet strict "suitable age and discretion" standard

Procedure: File a motion for alternative service with supporting affidavits of diligence and evasion. The court will enter an order specifying the authorized method and timeline.

Service in Special Proceedings

Certain civil actions have unique service requirements.

Divorce and family law cases:

Service on spouse must be by personal service or substituted service within New Hampshire, or through Secretary of State for out-of-state spouses (RSA 458:4)

Service by publication is permitted only if personal jurisdiction cannot be obtained and proper notice is given

Temporary restraining orders and protective orders may be served by any method authorized by the court, including email or in-person service by police officer

Eviction proceedings:

Service must be by personal service or substituted service at defendant's dwelling (RSA 540:2)

Service by mail is not sufficient for evictions

Papers must be served at least 7 days before hearing date (notice period)

Restraining orders and injunctions:

Temporary restraining orders (TROs) may be granted without service if irreparable harm is shown; TRO is effective for 14 days

Preliminary injunctions require proper service before they take effect (NHRCP 65)

Domestic violence protective orders may be served by police officer at scene or by process server

Small claims:

Small claims procedure (claims under $10,000) allows service by certified mail or personal service (RSA 502-A:4)

Service by publication is available if diligence is shown

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Key Takeaways

Personal service remains the gold standard — it is most difficult to challenge and requires only hand-delivery of papers directly to the defendant anywhere in New Hampshire or across the United States.

Substituted service in New Hampshire requires mandatory follow-up by certified mail to the defendant; substituted service alone is defective without the mailing component.

Service by publication requires prior court authorization and an affidavit of diligence; it cannot be used as a first resort and is available only after personal, substituted, and mail service attempts have failed.

Service must be completed within 90 days of filing, or the case is automatically dismissed; plaintiffs should request extensions proactively if difficulty locating the defendant is anticipated.

Proof of service is mandatory — an affidavit must be filed with the court identifying the method, date, time, person served, and other material details; defective affidavits may be supplemented before judgment, but actual service is the critical requirement.