How to Avoid Common Design Mistakes That Could Ruin Your Space
Decorating your home is an exciting process, but even the most well-intentioned design decisions can sometimes lead to less-than-desirable results. Whether it’s choosing the wrong furniture size, ignoring lighting, or playing it too safe with color, small missteps can make your space feel off-balance or uninspired.
Think of interior design like cooking—just as a missing ingredient can ruin a dish, a design mistake can throw off the harmony of a room. But don’t worry! The good news is that most common design mistakes are easily fixable, and with a few key strategies, you can create a space that feels both stylish and functional.
If your home isn’t feeling quite right but you can’t pinpoint why, you might be making one of these common design mistakes. Keep reading for expert-backed solutions to help you achieve a home that looks intentional, cohesive, and—most importantly—reflects your personal style.
1. How to Avoid Common Design Mistakes: Ignoring Scale and Proportion

One of the most common design blunders is selecting furniture that is either too big or too small for a room. A massive sectional in a tiny living room can make the space feel cramped, while dainty furniture in a large room can feel lost and unanchored.
The Fix: Before purchasing furniture, measure your space and use painter’s tape to mark out dimensions on the floor. This will help you visualize how each piece will fit. A good rule of thumb is to balance larger furniture with smaller, complementary pieces—think a large sectional paired with a sleek accent chair or a petite sofa with a substantial coffee table.
2. How to Avoid Common Design Mistakes: Overlooking Layered Lighting

Lighting can make or break a room’s ambiance, yet it’s often treated as an afterthought. Relying solely on harsh overhead lighting can make a space feel sterile, while insufficient lighting can create a gloomy atmosphere.
The Fix: A well-designed room should have at least three layers of lighting: ambient (overhead), task (focused), and accent (decorative). Consider adding table lamps, wall sconces, or under-cabinet lighting to create warmth and depth. If possible, install dimmer switches to adjust the brightness depending on the mood you want to set.
3. How to Avoid Common Design Mistakes: Pushing All Furniture Against the Walls

Many homeowners assume that placing all furniture against the walls makes a room feel larger. However, this often results in a space that feels empty and lacks a natural flow.
The Fix: Instead of hugging the walls, create conversation areas by pulling furniture inward. Arrange seating around a focal point—such as a coffee table, fireplace, or statement rug. Even in small rooms, bringing furniture just a few inches away from the walls can add warmth and create a cozier feel.
4. How to Avoid Common Design Mistakes: Playing It Too Safe with Color

A home that lacks color can feel dull and uninspired, yet many people shy away from bold hues for fear of making a mistake.
The Fix: If you’re hesitant to commit to color, start small. Introduce shades through throw pillows, rugs, or artwork. For a more dramatic impact, consider painting an accent wall in a rich hue like deep green or navy. If you prefer a neutral palette, layering different tones and textures—such as beige with warm terracotta or soft grays with charcoal—can add depth and character.
5. How to Avoid Common Design Mistakes: Choosing the Paint Color First

It might seem logical to start with wall color, but doing so can make it harder to coordinate furniture and decor later on.
The Fix: Select larger design elements first—such as sofas, rugs, or cabinetry—then choose a paint color that complements them. Paint is one of the easiest and most affordable elements to change, so it should be one of the final decisions in your design process.
6. How to Avoid Common Design Mistakes: Overloading a Room with Décor

While personal touches make a house feel like home, too many decorative elements can create a cluttered, chaotic look.
The Fix: Apply the "less is more" approach. Instead of filling every surface, be intentional about the pieces you display. Opt for statement decor—such as a large vase, sculptural object, or framed artwork—that can stand out without overwhelming the space. Edit and rotate items seasonally to keep your home feeling fresh.
7. How to Avoid Common Design Mistakes: Mismatched Design Styles

Mixing styles can create an eclectic and dynamic space, but when done incorrectly, it can feel disjointed and confusing.
The Fix: Find a unifying element—whether it’s color, material, or shape—to bring different pieces together. For example, if you love both mid-century modern and rustic styles, you can blend them by using natural wood tones or neutral upholstery to create cohesion.
8. How to Avoid Common Design Mistakes: Neglecting Rugs and Flooring

Bare floors can make a room feel cold and incomplete, yet many homeowners either skip rugs altogether or choose the wrong size.
The Fix: A well-sized rug should extend under the front legs of furniture in a seating area or fully underneath a dining table. If you’re unsure about scale, go larger rather than smaller. Rugs not only add warmth and texture but also help define different zones within a space.
9. How to Avoid Common Design Mistakes: Ignoring Functional Storage

A beautifully styled home isn’t practical if it lacks functional storage solutions. Cluttered surfaces and overflowing closets can make even the most stylish space feel chaotic.
The Fix: Incorporate smart storage solutions like built-in shelving, stylish baskets, and multifunctional furniture. Hidden storage—such as ottomans with storage compartments or a bed frame with built-in drawers—helps maintain an organized and polished look.
10. How to Avoid Common Design Mistakes: Failing to Personalize Your Space

While following design trends can be tempting, a home that lacks personal elements can feel generic and impersonal.
The Fix: Incorporate meaningful pieces, such as travel souvenirs, family photos, or vintage finds that tell your story. These elements add warmth and authenticity, making your home feel uniquely yours.
FAQ: How to Avoid Common Design Mistakes
Q: What is the biggest design mistake people make?A: The most common mistake is choosing furniture that is either too big or too small for the space. Proper scale and proportion are key to a well-balanced design.
Q: How do I make my home feel more cohesive?A: Stick to a consistent color palette and mix materials thoughtfully. Incorporating repeating textures, metals, or shapes across rooms can help create a unified look.
Q: Can I mix different interior design styles?A: Absolutely! The key is finding a unifying element, such as color or material, to tie the different styles together.
Transform Your Home with BY Design And Viz
If you’re feeling overwhelmed by design decisions, let the experts at BY Design And Viz help you create a home that’s both stylish and functional. Whether you need a full redesign, color consultation, or layout guidance, our team is here to bring your vision to life.