The simplest and most common type of franchise is a single unit franchisee. Many franchises and franchisees start this way, in order to build their futures one brick at a time. A single unit franchise is an agreement in which the franchisor grants the franchisee the rights to open and operate one franchise unit. One unit to one franchisee commonly represents owner-operated models. However, many times after the franchisee opened their single-unit and is prospering, it may become negotiated with the Franchisor for them to have the possibility of opening other units over time.