UI/UX design services work is an area of software project development that many companies fail to take into consideration. But, the scope of work required in this area - for both the design of user interfaces (UI) and user experiences (UX) - can be significant. If you want an accurate estimate, you should carefully consider the scope of UI/UX work, which can include: User research: An essential step to understanding the target users and their needs, user research can provide the web development team insights into user behavior, preferences, and requirements, which can then be used to inform the design and development process. User personas: A user persona is a semi-fictional representation of a user based on the data gathered during user research. It helps to identify user goals and needs, which can then be used to inform the design process. User journey maps: A user journey map is a visual representation of a user's experience with a product or service. It helps to identify areas that need improvement and opportunities to provide a better user experience within a web app. User stories: User stories are brief summaries of how a user interacts with the product or service. They are an important part of the development process, as they provide a clear understanding of the requirements and expectations of the users. Wireframes: Wireframes are used to visualize the design and allow for iteration and feedback. Building wireframes can be costly, depending on the complexity of the product, who you hire to build them, and the tools that are used to build them. Clickable prototypes: Creating a clickable prototype is often necessary in order to check for usability and user experience issues. Prototypes can be expensive to create, as it requires specialized software and expertise. Read More: UI Design Process - 7 Easy Steps to Make Great UIs Faster