Do You Need an Architect or an Interior Designer? Understanding the Difference
When starting a home renovation, extension, or new-build project, one of the first questions people ask is:
Do I need an architect or an interior designer?
It’s also one of the biggest areas of confusion for homeowners.
Many people wonder:
What’s the difference between an architect and an interior designer?
Can an interior designer do what an architect does?
Do I need both professionals for my project?
If I hire both, am I paying twice for the same service?
The truth is that architects and interior designers often work closely together, and while there is some overlap between the two roles, they each bring very different expertise to a project.
Here I explain:
The difference between architects and interior designers
When you should hire an architect
When you should hire an interior designer
When you may need both
What each professional typically focuses on
If you prefer watching rather than reading, I also talk about this topic in a quick reel on Instagram - here
What’s the difference between an architect and an interior designer?
Architects and interior designers both shape spaces, but they approach projects from different perspectives.
Architects focus on:
Building structure
Extensions and loft conversions
New builds
Planning permission
Exterior design
Structural layouts
Technical construction details
Interior designers focus on:
Interior layouts and flow
Furniture and furnishings
Lighting design
Materials and finishes
Functionality of the home
How a space feels aesthetically and practically
In simple terms, architects focus on the structure, exterior, and overall form of a building, while interior designers focus on how the space works and feels from the inside.
You could say architects take the existing shell and transform or expand it, while interior designers take that shell and improve what’s within it.
When should you hire an architect?
You will usually need an architect if your project involves:
Extensions
Loft conversions
New-build homes
Planning applications
Major exterior alterations
Architects are trained to think about the building as a whole - from structure and compliance to how the exterior connects with the surrounding environment.
When should you hire an interior designer?
You may benefit more from an interior designer if your project focuses mainly on:
Interior refurbishments
Improving layout and flow
Materials and fittings specification
Joinery and storage design
Bathroom design
Furniture and finish selections
Lighting and styling
Creating a cohesive and functional home
Renovations where the exterior remains unchanged
Interior designers focus on how people live within a space and how to make a home both beautiful and practical.
Can you hire both an architect and an interior designer?
Absolutely - and on many projects, this creates the best result.
For larger renovations, new-build homes, or extensions combined with full-house refurbishments, having both professionals involved allows each to fully focus on their area of expertise.
An architect ensures the building works structurally, efficiently, and complies with planning and building regulations, while an interior designer ensures the home functions beautifully for everyday living.
When architects and interior designers collaborate well, the final result often feels far more cohesive, both inside and out.
The images in this post are all from projects where I worked alongside architects, and the results turned out beautifully.
Final thoughts: architect vs interior designer
If your project involves planning permission and exterior changes, it’s usually best to start with an architect.
If your project is focused more on interiors, layout, finishes, furniture, and how your home functions day to day, an interior designer may be the right place to start.
And for projects that combine exterior work with detailed interior design, having both an architect and an interior designer can often create the strongest overall result.
Kx
