One of the most common dilemmas in home styling is knowing when to stop. You have a beautiful collection of art, shelving ideas, and mirrors, but the question remains: how many walls in a room should actually be decorated?
Decorating all four walls can make a room feel cozy and "complete," but it can also lead to a claustrophobic, cluttered atmosphere if not done carefully. Conversely, leaving too many walls blank can make a space feel cold and unfinished. Here is how to find the "sweet spot" for your home.

In interior design, empty space is just as important as the decor itself. If every wall is competing for your attention, the eye has nowhere to rest. A general professional guideline is to focus on 1 to 2 "primary" walls and leave the others as supporting elements.
If you have a bold wallpaper, a vibrant paint color, or a floor-to-ceiling gallery wall, let it be the star. Decorating just one wall intensely creates a strong focal point. This is perfect for:
In larger rooms, decorating two or three walls is common to create a sense of flow. However, the type of decor should vary:

Small rooms benefit from fewer decorated walls. Use mirrors on one wall to reflect light and keep at least two walls relatively clear to maintain a sense of openness. In vast, high-ceilinged rooms, you can afford to decorate more surfaces to "bring the walls in" and make the space feel intimate.
A wall that is already 60% covered by a large bookshelf or a tall wardrobe technically counts as "decorated." You don't need to add art on top of a wall that is already functionally occupied. Referencing our 60/40 rule, remember that 40% of your total wall surface area across the room should ideally remain "negative space."
Decorating all four walls works best in specific scenarios:

The hardest part of wall decor is the commitment — nobody wants to patch up unnecessary holes in the plaster. This is why virtual planning is a lifesaver.
Using the Roomtodo 3D planner, you can experiment with wall decor without any risk:
Don't guess where the art should go — see it!