Titles blur in the market. What matters is whether you are changing how space works — walls, light, egress — or mainly how it looks and feels.
Interior design focus
Materials, furnishings, color, lighting design coordination, and finish detailing. Essential for hospitality and high-end residential atmospheres.
Interior architecture focus
Spatial reconfiguration, millwork as architecture, coordination with structure/MEP, and permit-level plans for altered interiors.
Overlap is normal
Many firms offer both. Ask who stamps, who designs structure-adjacent work, and how FF&E procurement is handled.
Hiring tip
If walls move or exits change, start with architectural capability. If the plan stays and finishes transform, interior design may lead.