What are the basic rules of interior design?
Interior design rests on a few principles: function, balance, a focal point, scale and proportion, rhythm, contrast and harmony. They aren't strict laws, but rooms that feel right usually follow them, even when you can't say why.
1. Function first
Start with how the room is used: who lives there, what they do and where they walk. A beautiful room that blocks a path or lacks storage won't feel right for long.
2. Balance
Visual weight should feel evenly spread.
- Symmetrical: matching pieces on both sides of a centre, like two lamps beside a bed. Calm and formal.
- Asymmetrical: different pieces with equal weight, like a large sofa balanced by two armchairs. Relaxed and lively.
- Radial: everything around a centre, like chairs around a round table.
3. Focal point
Each room needs one place the eye goes first: a window, a fireplace, a headboard or a piece of art. Arrange the rest around it, and don't let two features compete.
4. Scale and proportion
Furniture should fit the room, and pieces should fit each other. A huge sofa in a small room feels crowded, and a tiny rug under a large table looks lost.
5. Rhythm
Repeat colours, shapes or materials across the room. A cushion colour that comes back in a vase and a painting ties the space together.
6. Contrast
Light and dark, smooth and rough, straight and curved. Without contrast a room feels flat; with too much it feels restless.
7. Harmony
All the parts should feel like they belong to one idea: a style, a palette, a mood. It's what makes a room look designed rather than collected by chance.
8. Light
Light shows everything else. Mix daylight, general light, task light and accent light, so the room works morning and night.
Using the rules
Learn them, then bend them on purpose. The best rooms break a rule because they know it. A 3D view lets you test the balance, scale and light of a room before buying anything.
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