Journal
Interior Architecture Versus Interior Decoration: What Is the Difference?
By Nadine Donohoe, Founder & Designer · Published · 6 minute read
Interior architecture deals with the permanent, built parts of an interior: layouts, openings, ceilings, built-ins, the finishes fixed to the fabric of the building. Interior decoration deals with the movable layer: furniture, textiles, lighting fixtures, objects and art. Most substantial projects need both, but they're different disciplines, and the architecture has to be resolved first: no amount of beautiful furniture rescues a poorly planned room.
Two disciplines, one interior
The confusion is understandable - both professions produce rooms people photograph. But they intervene at different depths. Interior architecture asks whether the wall should be there at all, whether the ceiling could be higher, whether the corridor is earning its floor area, whether the window reveals are deep enough to hold shadow. Decoration accepts the shell as given and composes within it.
The training differs accordingly. Interior architecture is studied as a technical design discipline - construction, structure, building services, detailing and documentation alongside aesthetics. Nadine Donohoe trained in interior architecture at ALBA, the Académie Libanaise des Beaux-Arts, followed by a master's degree at Istituto Marangoni in Milan - an education that runs from the technical to the editorial, which is roughly the range a complete residential project demands.
How to tell which one your project needs
- If the rooms themselves are wrong - sizes, flow, light, storage - the project is architectural, whatever the budget.
- If the shell works and the furnishing layer is tired, decoration may genuinely be enough.
- If you are building new or renovating substantially, the question answers itself: the architecture is being decided either way - the only choice is whether it is designed.
Why the order matters
Decoration performed before the architecture is resolved gets undone by it. A renovation that later moves a wall discards the furniture plan made around that wall; a lighting scheme chosen before the ceiling design is a compromise from the day it is installed. Working architecture-first is not a stylistic preference - it is the sequence that avoids paying for the same decision twice.
A beautiful room that doesn't work is a photograph. A room that works and is beautiful is a home.
The studio's work sits deliberately across both disciplines, architectural rigour underneath, an editorial eye on the surface. If you're unsure which your home needs, a few lines about the property in an inquiry is the fastest way to find out.