The Secret to a Home That Feels Complete

Some people just get interior design, right? They know exactly how to place a lamp, arrange a coffee table, or style a shelf without even thinking about it. Meanwhile, others feel stuck, wondering why their space doesn’t quite come together the way they imagined.

But here’s the thing, styling isn’t an inborn talent. It’s a skill. And like any skill, there are tricks that make it easier to master. One of the simplest (yet most effective) rules in interior design is the Rule of Threes, a game-changer for creating a space that looks effortlessly balanced and intentionally styled.

The Rule of Threes: Your Secret Weapon in Styling

At its core, this principle makes a space look visually cohesive and balanced. It stems from design psychology and Feng Shui, which suggest that odd-numbered groupings create movement and energy in a room. Our brains naturally find odd numbers more visually engaging, which is why this rule is widely used in interior design.

Think about it: when you look at a well-styled space, you’ll often see objects grouped in threes (or other odd numbers). This isn’t random—it’s a strategic approach to making a room feel balanced yet dynamic.

For example, if you’re decorating a coffee table, try grouping things in threes. Instead of placing four separate objects, think of one stack of books as a single item. Then, add two more things, like a bowl and a small sculpture. This keeps the table looking balanced and put together without feeling cluttered.

Why the Rule of Threes Works

Using the Rule of Threes in your home styling:
✔ Creates visual harmony – Odd-numbered groupings feel more intentional and organic.
✔ Adds depth and dimension – Three varying heights or textures keep the eye moving.
✔ Keeps spaces feeling curated, not cluttered – The right balance between too much and too little.

How to Apply the Rule of Threes in Your Home

Styling Bookshelves

I’ve styled A LOT of bookshelves in my day, and I will forever reference the Rule of Threes when it comes to a tricky shelf. This rule is a go-to that has not failed me to date. Check out the examples above to see if you can count a variation of three items or “groupings” on each shelf.

This method of styling can be approached from any angle, and it always works. For instance, where there are two picture frames, add a third to round it out. Similarly, where there are two vases or baskets, fill one with florals to give it a purposeful boost that includes your third item. When you have a lonely single item, add two more pieces to make it feel more purposeful.

Applying The Rule of Threes to Artwork

I always start in the middle of a gallery wall and work my way out. Inevitably, this leads to an odd number of pieces. A great column of three artwork pieces hung on a narrower wall is a perfect example.

There are so many great uses of the rule of threes, and they always pan out looking curated and purposeful. Start with three and work out from there with odd numbers as you go.

Furniture Placement and The Rule of Threes

Start to look deeper into your inspiration images to identify why groupings of three feel more complete. You’ll be surprised at how much you notice it being used, even with larger-scale furnishings. Furthermore, you’ll be surprised at how “off” things feel when they are not placed in threes.

For instance, two chairs always feel better with a table in between them to round out the rule of threes. Throw pillows can feel more purposeful when styled in variations of three. The end of a sofa (1) typically feels more supported by a table (2) and a lamp (3). The rule of threes can be used in any aspect of interior design.

If you want more design tips for styling your home check out these posts:

How To Style Surfaces Throughout Your Home

5 Ways To Make Your House More Cozy

Want more of our MMDH Furnishing Rules of Thumb?

We are excited to announce the newest design guide in our offering! Our manual for scaling a room of furniture. I’ve compiled my 20+ years of interior design knowledge into this easy-to-follow manual, room by room and item by item.

This guide includes a section fully dedicated to my rules for styling any space. If you struggle with styling your surfaces or arranging an entire room of furnishings, this is for you! Check it out in the link below!

xo,