The Builder Design Pattern provides one of the best ways to create an object. So it comes under creational pattern. The builder pattern is an object creation software design pattern. Instead of using numerous constructors in case of abstract factory pattern and factory method pattern, the builder pattern uses another object, a builder, that receives each initialization parameter step by step and then returns the resulting constructed object at once.
The definition in original Gang of Four book is given below
Allows for object level access control by acting as a pass through entity or a placeholder object.