"(1) A person is justified in using force against another when and to the extent that he reasonably believes that the force is necessary to prevent or terminate the other's unlawful entry into or attack upon his habitation; however, he is justified in the use of force which is intended or likely to cause death or serious bodily injury only if: (a) the entry is made or attempted in a violent and tumultuous manner, surreptitiously, or by stealth, and he reasonably believes that the entry is attempted or made for the purpose of assaulting or offering personal violence to any person, dwelling, or being in the habitation and he reasonably believes that the force is necessary to prevent the assault or offer of personal violence; or (b) he reasonably believes that the entry is made or attempted for the purpose of committing a felony in the habitation and that the force is necessary to prevent the commission of the felony. (2) The person using force or deadly force in defense of habitation is presumed for the purpose of both civil and criminal cases to have acted reasonably and had a reasonable fear of imminent peril of death or serious bodily injury if the entry or attempted entry is unlawful and is made or attempted by use of force, or in a violent and tumultuous manner, or surreptitiously or by stealth, or for the purpose of committing a felony."
Castle Laws are laws that address the use of force when defending one's self inside their home, or on their property. Some states expand this to vehicles, and the person's place of work. Castle Laws generally include: the places where this law applies, the requirements fro use of deadly force, if there is a duty to retreat, the amount of force that maybe used in defending one's self or others. These vary widely from state to state.