Your business may not be able to grow any further, but your brand has no limits if you decide to franchise.
There are many financial advantages of becoming a franchise, including earning revenue separate from the capacity of just one business. Franchises also allow you to work on your business and take a big picture view of where it can go.
The structure of a franchise can be quite complex on both a legal and management level and you place a lot of trust in others to represent your brand, so it is important that you choose your franchisees carefully to maintain your good reputation.