18 Pa.C.S. Ch. 5

in effect

18 Pa.C.S. § 5 Projected increases in State prison population.

Within 180 days of the effective date of this act, the Pennsylvania Commission on Sentencing shall, for the purpose of advising the General Assembly concerning future prison construction expenditures, publish projected increases in the State prison population resulting from implementation of this act. Explanatory Note. Act 21 amended section 1103 of Title 18 and sections 6335, 9712, 9713 and 9714 of Title 42.

18 Pa.C.S. § 501 Definitions.

Subject to additional definitions contained in subsequent provisions of this chapter which are applicable to specific provisions of this chapter, the following words and phrases, when used in this chapter shall have, unless the context clearly indicates otherwise, the meanings given to them in this section: "Believes" or "belief." Means "reasonably believes" or "reasonable belief." "Correctional institution." Any penal institution, penitentiary, State farm, reformatory, prison, jail, house of correction, or other institution for the incarceration or custody of persons under sentence for offenses or awaiting trial or sentence for offenses. "Corrections officer." A full-time employee assigned to the Department of Corrections whose principal duty is the care, custody and control of inmates of a penal or correctional institution operated by the Department of Corrections. "Deadly force." Force which, under the circumstances in which it is used, is readily capable of causing death or serious bodily injury. "Dwelling." Any building or structure, including any attached porch, deck or patio, though movable or temporary, or a portion thereof, which is for the time being the home or place of lodging of the actor. "Peace officer." Any person who by virtue of his office or public employment is vested by law with a duty to maintain public order or to make arrests for offenses, whether that duty extends to all offenses or is limited to specific offenses, or any person on active State duty pursuant to 51 Pa.C.S. § 508 (relating to active duty for emergency). The term "peace officer" shall also include any member of any park police department of any county of the third class. "Residence." A dwelling in which a person resides, either temporarily or permanently, or visits as an invited guest. "Unlawful force." Force, including confinement, which is employed without the consent of the person against whom it is directed and the employment of which constitutes an offense or actionable tort or would constitute such offense or tort except for a defense (such as the absence of intent, negligence, or mental capacity; duress; youth; or diplomatic status) not amounting to a privilege to use the force. Assent constitutes consent, within the meaning of this section, whether or not it otherwise is legally effective, except assent to the infliction of death or serious bodily injury. "Vehicle." A conveyance of any kind, whether or not motorized, that is designed to transport people or property. (July 6, 1984, P.L.647, No.134, eff. 90 days; July 17, 2007, P.L.139, No.41, eff. 60 days; June 28, 2011, P.L.48, No.10, eff. 60 days) 2011 Amendment. See the preamble to Act 10 in the appendix to this title for special provisions relating to legislative findings. Cross References. Section 501 is referred to in sections 2507, 2702.1 of this title; sections 75A01, 79C11 of Title 35 (Health and Safety); section 9719.1 of Title 42 (Judiciary and Judicial Procedure); section 7302 of Title 44 (Law and Justice).

18 Pa.C.S. § 502 Justification a defense.

In any prosecution based on conduct which is justifiable under this chapter, justification is a defense.

18 Pa.C.S. § 503 Justification generally.

(a) General rule.--Conduct which the actor believes to be necessary to avoid a harm or evil to himself or to another is justifiable if: (1) the harm or evil sought to be avoided by such conduct is greater than that sought to be prevented by the law defining the offense charged; (2) neither this title nor other law defining the offense provides exceptions or defenses dealing with the specific situation involved; and (3) a legislative purpose to exclude the justification claimed does not otherwise plainly appear. (b) Choice of evils.--When the actor was reckless or negligent in bringing about the situation requiring a choice of harms or evils or in appraising the necessity for his conduct, the justification afforded by this section is unavailable in a prosecution for any offense for which recklessness or negligence, as the case may be, suffices to establish culpability.

18 Pa.C.S. § 504 Execution of public duty.

(a) General rule.--Except as provided in subsection (b) of this section, conduct is justifiable when it is required or authorized by any law of the following: (1) The law defining the duties or functions of a public officer or the assistance to be rendered to such officer in the performance of his duties. (2) The law governing the execution of legal process. (3) The judgment or order of a competent court or tribunal. (4) The law governing the armed services or the lawful conduct of war. (5) Any other provision of law imposing a public duty. (b) Exceptions.--The other sections of this chapter apply to: (1) The use of force upon or toward the person of another for any of the purposes dealt with in such sections. (2) The use of deadly force for any purpose, unless the use of such force is otherwise expressly authorized by law or occurs in the lawful conduct of war. (c) Requisite state of mind.--The justification afforded by subsection (a) of this section applies: (1) when the actor believes his conduct to be required or authorized by the judgment or direction of a competent court or tribunal or in the lawful execution of legal process, notwithstanding lack of jurisdiction of the court or defect in the legal process; and (2) when the actor believes his conduct to be required or authorized to assist a public officer in the performance of his duties, notwithstanding that the officer exceeded his legal authority.

18 Pa.C.S. § 505 Use of force in self-protection.

(a) Use of force justifiable for protection of the person.--The use of force upon or toward another person is justifiable when the actor believes that such force is immediately necessary for the purpose of protecting himself against the use of unlawful force by such other person on the present occasion. (b) Limitations on justifying necessity for use of force.-- (1) The use of force is not justifiable under this section: (i) to resist an arrest which the actor knows is being made by a peace officer, although the arrest is unlawful; or (ii) to resist force used by the occupier or possessor of property or by another person on his behalf, where the actor knows that the person using the force is doing so under a claim of right to protect the property, except that this limitation shall not apply if: (A) the actor is a public officer acting in the performance of his duties or a person lawfully assisting him therein or a person making or assisting in a lawful arrest; (B) the actor has been unlawfully dispossessed of the property and is making a reentry or recaption justified by section 507 of this title (relating to use of force for the protection of property); or (C) the actor believes that such force is necessary to protect himself against death or serious bodily injury. (2) The use of deadly force is not justifiable under this section unless the actor believes that such force is necessary to protect himself against death, serious bodily injury, kidnapping or sexual intercourse compelled by force or threat; nor is it justifiable if: (i) the actor, with the intent of causing death or serious bodily injury, provoked the use of force against himself in the same encounter; or (ii) the actor knows that he can avoid the necessity of using such force with complete safety by retreating, except the actor is not obliged to retreat from his dwelling or place of work, unless he was the initial aggressor or is assailed in his place of work by another person whose place of work the actor knows it to be. (2.1) Except as otherwise provided in paragraph (2.2), an actor is presumed to have a reasonable belief that deadly force is immediately necessary to protect himself against death, serious bodily injury, kidnapping or sexual intercourse compelled by force or threat if both of the following conditions exist: (i) The person against whom the force is used is in the process of unlawfully and forcefully entering, or has unlawfully and forcefully entered and is present within, a dwelling, residence or occupied vehicle; or the person against whom the force is used is or is attempting to unlawfully and forcefully remove another against that other's will from the dwelling, residence or occupied vehicle. (ii) The actor knows or has reason to believe that the unlawful and forceful entry or act is occurring or has occurred. (2.2) The presumption set forth in paragraph (2.1) does not apply if: (i) the person against whom the force is used has the right to be in or is a lawful resident of the dwelling, residence or vehicle, such as an owner or lessee; (ii) the person sought to be removed is a child or grandchild or is otherwise in the lawful custody or under the lawful guardianship of the person against whom the protective force is used; (iii) the actor is engaged in a criminal activity or is using the dwelling, residence or occupied vehicle to further a criminal activity; or (iv) the person against whom the force is used is a peace officer acting in the performance of his official duties and the actor using force knew or reasonably should have known that the person was a peace officer. (2.3) An actor who is not engaged in a criminal activity, who is not in illegal possession of a firearm and who is attacked in any place where the actor would have a duty to retreat under paragraph (2)(ii) has no duty to retreat and has the right to stand his ground and use force, including deadly force, if: (i) the actor has a right to be in the place where he was attacked; (ii) the actor believes it is immediately necessary to do so to protect himself against death, serious bodily injury, kidnapping or sexual intercourse by force or threat; and (iii) the person against whom the force is used displays or otherwise uses: (A) a firearm or replica of a firearm as defined in 42 Pa.C.S. § 9712 (relating to sentences for offenses committed with firearms); or (B) any other weapon readily or apparently capable of lethal use. (2.4) The exception to the duty to retreat set forth under paragraph (2.3) does not apply if the person against whom the force is used is a peace officer acting in the performance of his official duties and the actor using force knew or reasonably should have known that the person was a peace officer. (2.5) Unless one of the exceptions under paragraph (2.2) applies, a person who unlawfully and by force enters or attempts to enter an actor's dwelling, residence or occupied vehicle or removes or attempts to remove another against that other's will from the actor's dwelling, residence or occupied vehicle is presumed to be doing so with the intent to commit: (i) an act resulting in death or serious bodily injury; or (ii) kidnapping or sexual intercourse by force or threat. (2.6) A public officer justified in using force in the performance of his duties or a person justified in using force in his assistance or a person justified in using force in making an arrest or preventing an escape is not obliged to desist from efforts to perform such duty, effect such arrest or prevent such escape because of resistance or threatened resistance by or on behalf of the person against whom such action is directed. (3) Except as otherwise required by this subsection, a person employing protective force may estimate the necessity thereof under the circumstances as he believes them to be when the force is used, without retreating, surrendering possession, doing any other act which he has no legal duty to do or abstaining from any lawful action. (c) Use of confinement as protective force.--The justification afforded by this section extends to the use of confinement as protective force only if the actor takes all reasonable measures to terminate the confinement as soon as he knows that he safely can, unless the person confined has been arrested on a charge of crime. (d) Definition.--As used in this section, the term "criminal activity" means conduct which is a misdemeanor or felony, is not justifiable under this chapter and is related to the confrontation between an actor and the person against whom force is used. (June 28, 2011, P.L.48, No.10, eff. 60 days) 2011 Amendment. Act 10 amended subsec. (b) and added subsec. (d). See the preamble to Act 10 in the appendix to this title for special provisions relating to legislative findings. Cross References. Section 505 is referred to in section 506 of this title; sections 5322, 6304 of Title 23 (Domestic Relations); section 8340.2 of Title 42 (Judiciary and Judicial Procedure).

18 Pa.C.S. § 506 Use of force for the protection of other persons.

(a) General rule.--The use of force upon or toward the person of another is justifiable to protect a third person when: (1) the actor would be justified under section 505 (relating to use of force in self-protection) in using such force to protect himself against the injury he believes to be threatened to the person whom he seeks to protect; (2) under the circumstances as the actor believes them to be, the person whom he seeks to protect would be justified in using such protective force; and (3) the actor believes that his intervention is necessary for the protection of such other person. (b) Exception.--Notwithstanding subsection (a), the actor is not obliged to retreat to any greater extent than the person whom he seeks to protect. (June 28, 2011, P.L.48, No.10, eff. 60 days) 2011 Amendment. See the preamble to Act 10 in the appendix to this title for special provisions relating to legislative findings. Cross References. Section 506 is referred to in section 6304 of Title 23 (Domestic Relations); section 8340.2 of Title 42 (Judiciary and Judicial Procedure).

18 Pa.C.S. § 507 Use of force for the protection of property.

(a) Use of force justifiable for protection of property.--The use of force upon or toward the person of another is justifiable when the actor believes that such force is immediately necessary: (1) to prevent or terminate an unlawful entry or other trespass upon land or a trespass against or the unlawful carrying away of tangible movable property, if such land or movable property is, or is believed by the actor to be, in his possession or in the possession of another person for whose protection he acts; or (2) to effect an entry or reentry upon land or to retake tangible movable property, if: (i) the actor believes that he or the person by whose authority he acts or a person from whom he or such other person derives title was unlawfully dispossessed of such land or movable property and is entitled to possession; and (ii) (A) the force is used immediately or on fresh pursuit after such dispossession; or (B) the actor believes that the person against whom he uses force has no claim of right to the possession of the property and, in the case of land, the circumstances, as the actor believes them to be, are of such urgency that it would be an exceptional hardship to postpone the entry or reentry until a court order is obtained. (b) Meaning of possession.--For the purpose of subsection (a) of this section: (1) A person who has parted with the custody of property to another who refuses to restore it to him is no longer in possession, unless the property is movable and was and still is located on land in his possession. (2) A person who has been dispossessed of land does not regain possession thereof merely by setting foot thereon. (3) A person who has a license to use or occupy real property is deemed to be in possession thereof except against the licensor acting under claim of right. (c) Limitations on justifiable use of force.-- (1) The use of force is justifiable under this section only if the actor first requests the person against whom such force is used to desist from his interference with the property, unless the actor believes that: (i) such request would be useless; (ii) it would be dangerous to himself or another person to make the request; or (iii) substantial harm will be done to the physical condition of the property which is sought to be protected before the request can effectively be made. (2) The use of force to prevent or terminate a trespass is not justifiable under this section if the actor knows that the exclusion of the trespasser will expose him to substantial danger of serious bodily injury. (3) The use of force to prevent an entry or reentry upon land or the recaption of movable property is not justifiable under this section, although the actor believes that such reentry or caption is unlawful, if: (i) the reentry or recaption is made by or on behalf of a person who was actually dispossessed of the property; and (ii) it is otherwise justifiable under subsection (a)(2). (4) (i) The use of deadly force is justifiable under this section if: (A) there has been an entry into the actor's dwelling; (B) the actor neither believes nor has reason to believe that the entry is lawful; and (C) the actor neither believes nor has reason to believe that force less than deadly force would be adequate to terminate the entry. (ii) If the conditions of justification provided in subparagraph (i) have not been met, the use of deadly force is not justifiable under this section unless the actor believes that: (A) the person against whom the force is used is attempting to dispossess him of his dwelling otherwise than under a claim of right to its possession; or (B) such force is necessary to prevent the commission of a felony in the dwelling. (d) Use of confinement as protective force.--The justification afforded by this section extends to the use of confinement as protective force only if the actor takes all reasonable measures to terminate the confinement as soon as he knows that he can do so with safety to the property, unless the person confined has been arrested on a charge of crime. (e) Use of device to protect property.--The justification afforded by this section extends to the use of a device for the purpose of protecting property only if: (1) the device is not designed to cause or known to create a substantial risk of causing death or serious bodily injury; (2) the use of the particular device to protect the property from entry or trespass is reasonable under the circumstances, as the actor believes them to be; and (3) the device is one customarily used for such a purpose or reasonable care is taken to make known to probable intruders the fact that it is used. (f) Use of force to pass wrongful obstructor.--The use of force to pass a person whom the actor believes to be intentionally or knowingly and unjustifiably obstructing the actor from going to a place to which he may lawfully go is justifiable, if: (1) the actor believes that the person against whom he uses force has no claim of right to obstruct the actor; (2) the actor is not being obstructed from entry or movement on land which he knows to be in the possession or custody of the person obstructing him, or in the possession or custody of another person by whose authority the obstructor acts, unless the circumstances, as the actor believes them to be, are of such urgency that it would not be reasonable to postpone the entry or movement on such land until a court order is obtained; and (3) the force used is not greater than it would be justifiable if the person obstructing the actor were using force against him to prevent his passage. (Dec. 19, 1980, P.L.1310, No.235, eff. imd.) 1980 Amendment. Act 235 amended subsec. (c). Cross References. Section 507 is referred to in section 505 of this title; section 8340.2 of Title 42 (Judiciary and Judicial Procedure).

18 Pa.C.S. § 508 Use of force in law enforcement.

(a) Peace officer's use of force in making arrest.-- (1) A peace officer, or any person whom he has summoned or directed to assist him, need not retreat or desist from efforts to make a lawful arrest because of resistance or threatened resistance to the arrest. He is justified in the use of any force which he believes to be necessary to effect the arrest and of any force which he believes to be necessary to defend himself or another from bodily harm while making the arrest. However, he is justified in using deadly force only when he believes that such force is necessary to prevent death or serious bodily injury to himself or such other person, or when he believes both that: (i) such force is necessary to prevent the arrest from being defeated by resistance or escape; and (ii) the person to be arrested has committed or attempted a forcible felony or is attempting to escape and possesses a deadly weapon, or otherwise indicates that he will endanger human life or inflict serious bodily injury unless arrested without delay. (2) A peace officer making an arrest pursuant to an invalid warrant is justified in the use of any force which he would be justified in using if the warrant were valid, unless he knows that the warrant is invalid. (b) Private person's use of force in making arrest.-- (1) A private person who makes, or assists another private person in making a lawful arrest is justified in the use of any force which he would be justified in using if he were summoned or directed by a peace officer to make such arrest, except that he is justified in the use of deadly force only when he believes that such force is necessary to prevent death or serious bodily injury to himself or another. (2) A private person who is summoned or directed by a peace officer to assist in making an arrest which is unlawful, is justified in the use of any force which he would be justified in using if the arrest were lawful, unless he knows that the arrest is unlawful. (3) A private person who assists another private person in effecting an unlawful arrest, or who, not being summoned, assists a peace officer in effecting an unlawful arrest, is justified in using any force which he would be justified in using if the arrest were lawful, if: (i) he believes the arrest is lawful; and (ii) the arrest would be lawful if the facts were as he believes them to be. (c) Use of force regarding escape.-- (1) A peace officer, corrections officer or other person who has an arrested or convicted person in his custody is justified in the use of such force to prevent the escape of the person from custody as the officer or other person would be justified in using under subsection (a) if the officer or other person were arresting the person. (2) A peace officer or corrections officer is justified in the use of such force, including deadly force, which the officer believes to be necessary to prevent the escape from a correctional institution of a person whom the officer believes to be lawfully detained in such institution under sentence for an offense or awaiting trial or commitment for an offense. (3) A corrections officer is justified in the use of such force, which the officer believes to be necessary to defend himself or another from bodily harm during the pursuit of the escaped person. However, the officer is justified in using deadly force only when the officer believes that such force is necessary to prevent death or serious bodily injury to himself or another or when the officer believes that: (i) such force is necessary to prevent the apprehension from being defeated by resistance; and (ii) the escaped person has been convicted of committing or attempting to commit a forcible felony, possesses a deadly weapon or otherwise indicates that he will endanger human life or inflict serious bodily injury unless apprehended without delay. (d) Use of force to prevent suicide or the commission of crime.-- (1) The use of force upon or toward the person of another is justifiable when the actor believes that such force is immediately necessary to prevent such other person from committing suicide, inflicting serious bodily injury upon himself, committing or consummating the commission of a crime involving or threatening bodily injury, damage to or loss of property or a breach of the peace, except that: (i) Any limitations imposed by the other provisions of this chapter on the justifiable use of force in self-protection, for the protection of others, the protection of property, the effectuation of an arrest or the prevention of an escape from custody shall apply notwithstanding the criminality of the conduct against which such force is used. (ii) The use of deadly force is not in any event justifiable under this subsection unless: (A) the actor believes that there is a substantial risk that the person whom he seeks to prevent from committing a crime will cause death or serious bodily injury to another unless the commission or the consummation of the crime is prevented and that the use of such force presents no substantial risk of injury to innocent persons; or (B) the actor believes that the use of such force is necessary to suppress a riot or mutiny after the rioters or mutineers have been ordered to disperse and warned, in any particular manner that the law may require, that such force will be used if they do not obey. (2) The justification afforded by this subsection extends to the use of confinement as preventive force only if the actor takes all reasonable measures to terminate the confinement as soon as he knows that he safely can, unless the person confined has been arrested on a charge of crime. (July 17, 2007, P.L.139, No.41, eff. 60 days) 2007 Amendment. Act 41 amended subsec. (c). Cross References. Section 508 is referred to in section 8340.2 of Title 42 (Judiciary and Judicial Procedure).

18 Pa.C.S. § 509 Use of force by persons with special responsibility for care, discipline or safety of others.

The use of force upon or toward the person of another is justifiable if: (1) The actor is the parent or guardian or other person similarly responsible for the general care and supervision of a minor or a person acting at the request of such parent, guardian or other responsible person and: (i) the force is used for the purpose of safeguarding or promoting the welfare of the minor, including the preventing or punishment of his misconduct; and (ii) the force used is not designed to cause or known to create a substantial risk of causing death, serious bodily injury, disfigurement, extreme pain or mental distress or gross degradation. (2) The actor is a teacher or person otherwise entrusted with the care or supervision for a special purpose of a minor and: (i) the actor believes that the force used is necessary to further such special purpose, including the maintenance of reasonable discipline in a school, class or other group, and that the use of such force is consistent with the welfare of the minor; and (ii) the degree of force, if it had been used by the parent or guardian of the minor, would not be unjustifiable under paragraph (1)(ii). (3) The actor is the guardian or other person similarly responsible for the general care and supervision of an incapacitated, mentally ill or mentally retarded person; and: (i) the force is used for the purpose of safeguarding or promoting the welfare of the incapacitated, mentally ill or mentally retarded person, including the prevention of his misconduct, and there is no reasonable alternative to the use of such force; and (ii) the force used is not designed to cause or known to create a substantial risk of causing death, bodily injury, disfigurement, unnecessary pain, mental distress, or humiliation. (4) The actor is a doctor or other therapist or a person assisting him at his direction; and: (i) the force is used for the purpose of administering a recognized form of treatment not prohibited by law of this Commonwealth which the actor believes to be adapted to promoting the physical or mental health of the patient; and (ii) the treatment is administered with the consent of the patient, or, if the patient is a minor or an incapacitated person with the consent of his parent or guardian or other person legally competent to consent in his behalf, or the treatment is administered in an emergency when the actor believes that no one competent to consent can be consulted and that a reasonable person, wishing to safeguard the welfare of the patient, would consent. (5) The actor is a warden or other authorized official of a correctional institution; and: (i) he believes that the force used is necessary for the purpose of enforcing the lawful rules or procedures of the institution, unless his belief in the lawfulness of the rule or procedure sought to be enforced is erroneous and his error is due to ignorance or mistake as to the provisions of this title, any other provision of the criminal law or the law governing the administration of the institution; (ii) the nature or degree of force used is not forbidden by law; and (iii) if deadly force is used, its use is otherwise justifiable under this chapter. (6) The actor is a person responsible for the safety of a vessel or an aircraft or a person acting at his direction; and: (i) he believes that the force used is necessary to prevent interference with the operation of the vessel or aircraft or obstruction of the execution of a lawful order, unless his belief in the lawfulness of the order is erroneous and his error is due to ignorance or mistake as to the law defining his authority; and (ii) if deadly force is used, its use is otherwise justifiable under this chapter. (7) The actor is a person who is authorized or required by law to maintain order or decorum in a vehicle, train or other carrier or in a place where others are assembled; and: (i) he believes that the force used is necessary for such purpose; and (ii) the force used is not designed to cause death, or known to create a substantial risk of causing death, bodily injury, or extreme mental distress. (Oct. 21, 1988, P.L.1000, No.115, eff. imd.; Apr. 16, 1992, P.L.108, No.24, eff. 60 days) Cross References. Section 509 is referred to in section 8340.2 of Title 42 (Judiciary and Judicial Procedure).

18 Pa.C.S. § 510 Justification in property crimes.

Conduct involving the appropriation, seizure or destruction of, damage to, intrusion on or interference with property is justifiable under circumstances which would establish a defense of privilege in a civil action based thereon, unless: (1) this title or the law defining the offense deals with the specific situation involved; or (2) a legislative purpose to exclude the justification claimed otherwise plainly appears.

Source: Open US Law by Vaquill AI (CC BY 4.0)URL: https://www.palegis.us/statutes/consolidated/view-statute?txtType=HTM&ttl=18Fetched: 10/16/2026