Pennsylvania Rules of Civil Procedure

Pennsylvania's rules for serving a writ of summons or complaint are in the Pennsylvania Rules of Civil Procedure (Pa.R.C.P.), mainly Rules 400 to 430. Subpoenas are covered by Rules 234.1 to 234.9.

Pennsylvania doesn't license process servers. But in most civil cases, original process must be served by the sheriff. A private "competent adult" can serve only in certain kinds of cases, and anywhere in Philadelphia County.

Disclaimer: Laws change, and this page is a plain-language summary, not legal advice. Check the current rules in the Pennsylvania Code, Title 231 or ask an attorney before relying on it.

Pennsylvania process servers

• Become a process server in Pennsylvania
• Hire a process server in Pennsylvania

Quick facts: process serving in Pennsylvania

• Who can serve: The sheriff, in most cases. A competent adult can also serve in injunction, partition, declaratory judgment-only and certain diversity cases, and in Philadelphia (Rule 400, Rule 400.1).
• Licensing: None. A competent adult is anyone 18 or older who isn't a party, or an employee or relative of a party (Rule 76).
• Deadline to serve: 30 days after the writ is issued or the complaint is filed, inside Pennsylvania (Rule 401). 90 days outside Pennsylvania (Rule 404). Process can be reissued or reinstated if you miss it.
• Substituted service: Hand the papers to an adult family member at the defendant's home, the person in charge of the home, a lodging manager, or the person in charge at the defendant's business (Rule 402(a)(2)).
• Proof of service: Anyone other than the sheriff files a return of service by affidavit (Rule 405).
• Time to respond: 20 days after service of the complaint (Rule 1026).

Process-serving software: ServeManager

ServeManager is process-serving software used by agencies across Pennsylvania. It tracks every attempt with date, time, GPS and photos, and generates affidavits of service from the job. That helps when a return of no service has to describe your efforts in detail.

Register for ServeManager

Do you need a license to serve process in Pennsylvania?

No. Pennsylvania has no state license, registration or certification for process servers. The limit is on which cases a private server can take.

Under Rule 400, original process inside Pennsylvania is served only by the sheriff, except in these cases, where a competent adult can serve too:

• Actions for an injunction, to perpetuate testimony, or to appoint a receiver (Rules 1531 to 1533)
• Partition actions
• Declaratory judgment actions where that is the only relief sought
• Civil actions with complete diversity of citizenship between all plaintiffs and all defendants, where at least one defendant is a Pennsylvania citizen

The diversity category was added by an amendment effective April 1, 2022. In March 2026, the Civil Procedural Rules Committee published a proposal to also require that the amount in controversy meet the federal threshold in 28 U.S.C. § 1332(a). As of its last update, the Committee's page listed it as a proposal, not an adopted rule.

Philadelphia is different. In cases filed in Philadelphia, a competent adult can serve anywhere in Philadelphia County. In cases filed elsewhere, a competent adult can serve a defendant in Philadelphia County (Rule 400.1).

Domestic relations cases follow their own rule (Rule 1930.4). Outside Pennsylvania, a competent adult can serve in any case (Rule 404).

For a step-by-step guide, see Become a Process Server in Pennsylvania.

How to serve a summons in Pennsylvania

Personal service: Rule 402(a)(1)

Hand a copy of the original process directly to the defendant.

Residence and business service: Rule 402(a)(2)

You can also hand a copy to:

• An adult member of the defendant's family who lives with them, at the defendant's home. If no adult family member is there, the adult in charge of the home.
• The clerk or manager of the hotel, inn, apartment house, boarding house or other lodging where the defendant lives
• The defendant's agent, or the person in charge, at any office or usual place of business of the defendant

Service by mail: Rule 403

Mail service is allowed only where another rule permits it, such as service outside Pennsylvania. Use a form of mail that requires a receipt signed by the defendant or their authorized agent (Rule 403).

If the mail comes back marked refused, you can mail a copy by ordinary mail with a return address. That service is complete if it isn't returned within 15 days. If the mail comes back unclaimed, you have to serve another way.

Service outside Pennsylvania: Rule 404

Serve within 90 days. You can use a competent adult under Rule 402(a), mail under Rule 403, the method used by the courts where service is made, a treaty method, or a method directed by a foreign authority in response to a letter rogatory.

Special order of court and publication: Rule 430

If you can't serve under the usual rules, the plaintiff can ask the court for a special order directing how to serve. The motion needs an affidavit describing the search for the defendant and why service can't be made (Rule 430).

If publication is allowed, the notice runs once in the court's legal publication, if it has one, and once in a newspaper of general circulation in the county. See What is service by publication?

Real property actions: Rule 410

In actions for possession of property or mortgage foreclosure, also serve anyone found in possession of the property who isn't named as a party, and note it in the return.

Acceptance of service: Rule 400

The defendant or their authorized agent can accept service by filing an acceptance of service. No return is needed then.

Serving businesses and other entities

Find registered office addresses with the Pennsylvania Department of State business search.

• Corporations and similar entities (Rule 424): Hand a copy to an executive officer, partner or trustee; to the manager, clerk or other person in charge of any regular place of business or activity; or to an agent authorized in writing to receive service. The person served can't be a plaintiff in the case.
• Partnerships and unincorporated associations (Rule 423): Serve a partner, officer or registered agent; the person in charge of a regular place of business; or an agent authorized in writing.
• The Commonwealth (Rule 422): Serve at the office of the named defendant and at the office of the Attorney General, by handing a copy to the person in charge.
• Political subdivisions (Rule 422): Hand a copy to an authorized agent or the person in charge at the subdivision's office, or serve the mayor or the president, chairman, secretary or clerk of the governing body.

Remember that Rule 400 still controls who can serve. Outside Philadelphia and the listed case types, the sheriff serves businesses too.

Serving a subpoena in Pennsylvania

Any adult can serve a subpoena anywhere in Pennsylvania (Rule 234.2). You can serve it:

• In any way allowed by Rule 402(a)
• By mail with a return receipt and restricted delivery
• By ordinary mail, with two copies of the notice and acknowledgment form (Rule 234.9) and a stamped return envelope

When serving in person, tender the fee for one day's attendance and round-trip mileage if the witness asks for it. When serving by mail, enclose a check for that amount. A subpoena served by ordinary mail isn't enforceable unless the witness acknowledges receiving it.

Proof of service

After service, the sheriff or other server makes a return of service right away (Rule 405). It must state:

• The date, time, place and manner of service
• Who was served
• Any other facts the court needs to decide whether service was proper

A return by anyone other than the sheriff must be made by affidavit. If you couldn't serve, file a return of no service when the time to serve runs out. A non-sheriff's return of no service must describe in detail what you did to try to serve.

For mail service, attach the signed return receipt. If the defendant refused the mail and you then used ordinary mail, attach the refused envelope and an affidavit that the ordinary mail wasn't returned within 15 days. File the return with the prothonotary.

Hire a Pennsylvania process server

Find agencies across the state in the Pennsylvania process server directory.

More Pennsylvania resources

• Become a Process Server in Pennsylvania
• Courts in Pennsylvania
• Pennsylvania Rules of Civil Procedure, Title 231 (Pennsylvania Code)
• Civil Procedural Rules Committee (Unified Judicial System of Pennsylvania), for proposed and adopted rule changes
• Proposed amendment to Rule 400 (March 2026)

This page is a general overview of Pennsylvania law, not legal advice. Laws change. Check the current rules or talk to an attorney about your case.