Interior design in architecture companies involves the creation of functional and aesthetically pleasing interior spaces within buildings. Interior designers work closely with architects and clients to understand the purpose and requirements of the space and then develop design concepts that reflect the client's needs and preferences while also adhering to building codes and regulations.

Interior design in architecture companies may involve the selection of materials, furnishings, and lighting to create a cohesive design scheme that enhances the overall aesthetic of the space. The interior designer may also work with engineers and contractors to ensure that the design is feasible and can be implemented within the construction budget.

Overall, interior design is an important aspect of architecture that focuses on creating functional, visually appealing, and comfortable interior spaces that meet the needs of the building's occupants.

1. Design concept: This outlines the overall vision for the space, including the style, color palette, and design elements that will be used.

2. Floor plans and elevations: These are detailed drawings that show the layout of the space, including the placement of walls, windows, doors, and furniture.

3. Material and finishes: This includes the selection of materials such as flooring, wall finishes, and lighting fixtures that will be used in the space.

4. Furniture and accessories: This specifies the type of furniture and accessories that will be used to furnish the space, including the style, color, and placement.

5. Lighting design: This outlines the lighting plan for the space, including the type and placement of light fixtures.

6. Sustainability: This may include specifications for eco-friendly materials and energy-efficient design features to reduce the environmental impact of the project.