When do you need an architect
If you plan anything big - adding a new wing, changing the roof line, moving load-bearing walls, or building a house from scratch - you need an architect. Architects are licensed specialists trained to keep the structure safe and code-compliant. Because they carry legal responsibility for their drawings, they charge more per hour than interior designers, even on projects that don’t technically require a license. Most of an architect’s work (about 80 percent) goes into calculations, permits, and structural details that the average homeowner never sees - but that make the building stand up and pass inspections.
When do you need an interior designer
If the external walls are staying put and the goal is to refresh how your rooms look and work, call a designer. Designers focus on colours, lighting, furniture layout, and storage so everyday life feels smoother and looks better. They also manage orders, deliveries, and installers, often unlocking trade discounts that soften their fee. Their eyes stay on aesthetics and day-to-day functionality rather than concrete and steel.
Expect very different experience
Working with an architect is like working with an engineer who speaks in floor plans and building codes; progress is measured in permits approved and beams specified. Working with an interior designer feels more like collaborating with a stylist - they show mood boards, fabric swatches, and 3-D room views until the space matches your taste.
Quick guide
Still unsure? Book a short consultation with each; the right fit usually becomes obvious after a single conversation.