The Common Law definition of burglary is the breaking and entering in the dwelling house of another at night with the intent to commit a felony therein.  State statutes have expanded this definition; for example to day or night and buildings other than a house such as a store, etc.If there wasn't any breaking and entering and the person was given permission to enter the house and then decided to steal something, that would be larceny. not burglary.  Larceny is the trespassory taking and carrying awsy of the personal property of another with the intent to permanently deprive.