Premises are land and buildings together considered as a property. ... Note that a single house or a single other piece of property is "premises", not a "premise", although the word "premises" is plural in form; e.g. "The equipment is on the customer's premises", never "The equipment is on the customer's premise".

What's the difference between premise and premises?

The Merriam-Webster dictionary defines premises as “a tract of land with buildings thereon,” whereas premise is “a proposition anecdotally supposed or proved as a basis of argument or interference.” ... “Premises,” already a single noun, cannot be replaced by “premise,” and the two are quite different.

Why do people say premise instead of premises?

Premises – a house or building, together with its land and outbuildings, occupied by a business or considered in an official context. Premise – a previous statement or proposition from which another is inferred or follows as a conclusion.