The interior design of an architecture project focuses on material and fixture selections, sourcing, and purchasing. The objective is to enhance and enrich spaces with materials, fixtures, and finishes to impact the end user. The interior of the building is the portion that is experienced up close, allowing designs to be experienced not only visually but with all the senses.  One misconception of an interior designer is that they are focused on paint and furniture. That is more common of an interior decorator, whereas an interior designer is well-versed not only in paint colors and furniture but also has in-depth knowledge of interior details, material application, and constructability.

Not only do interior designers pitch ideas, colors, and other design options that many people couldn't imagine, they also know how to blend beautiful design with functionality that truly serves the needs of the users of the space. Interior designers also have deep knowledge of their sourced materials, timelines, and details. This assembly information is turned into buildable documents within the overall architecture plans.