An open house is a gathering or event where people are invited to come and visit a place, typically a home, that is for sale or rent. The purpose of an open house is to allow potential buyers or tenants to see the property and get a feel for what it would be like to live there. During an open house, real estate agents or owners will often be present to answer questions and provide information about the property. Open houses are commonly used as a marketing tool by realtors to attract potential buyers or renters to a property.