What is the collective noun for interior?

There isn't a specific collective noun for "interior" in the way there is for animals (e.g., a flock of birds) or objects (e.g., a fleet of cars).

However, you could use descriptive phrases to convey a sense of collection:

* A suite of interiors: This suggests a collection of well-designed and coordinated interior spaces.

* A range of interiors: This implies a variety of styles and designs within a collection of interior spaces.

* A collection of interiors: This is a general term for a group of interior spaces, without specifying any particular style or design.

Ultimately, the best way to describe a collection of interiors will depend on the specific context.