The acts of breaking and entering a building were historically part of the definition of the crime of burglary. But most states have since broadened the definition of burglary to include any entry into a building without the permission of the owner and with the intent to commit a theft, assault, or other crime inside the building. But a few states still have a distinct criminal offense of breaking and entering a building.

And some states have a similar criminal offense of forcible and unlawful entry that make it a crime to force entry into an automobile, safe, ATM, parking meter, or vending machine.

Breaking and entering laws (and related property crime laws) are usually located in a state’s penal or criminal code (statutes).

In New Hampshire, burglary is defined under RSA 635:1. The state's definition of burglary has indeed been broadened from the historical concept of 'breaking and entering.' In New Hampshire, a person is guilty of burglary if they enter a building or occupied structure, or separately secured or occupied section thereof, with the purpose to commit a crime therein, unless the premises are at the time open to the public or the actor is licensed or privileged to enter. It does not require breaking and entering; simply entering without permission with the intent to commit a crime is sufficient. The intent to commit a crime must be present at the time of entry. New Hampshire also has laws against criminal trespass, which is a lesser offense that involves entering or remaining on the property of another without authorization. The state does not have a distinct offense of 'breaking and entering' separate from burglary, but the elements of breaking and entering are encompassed within the burglary statute. Additionally, New Hampshire law addresses unauthorized entries into motor vehicles under RSA 635:2, which could be considered similar to the forcible and unlawful entry offenses mentioned, although it is specifically tailored to vehicles.