At common law, the crime of burglary entailed (i) breaking and (ii) entering of (iii) a dwelling house (iv) of another (v) in the nighttime (vi) with intent to commit a felony therein.

Modern statutes now often take out the elements of breaking, dwelling house, and nighttime in their definitions of what constitutes burglary.  Under the Model Penal Code, for instance, burglary is defined as entering a building or occupied structure with 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 said premises.