The 5 Worst Home Decor Mistakes Designers Secretly Hate (But Won’t Tell You)

By Brittany McNab 

As an interior designer, people often assume that I’m constantly evaluating and critiquing their homes. While I occasionally catch myself doing this subconsciously (I can’t help it, okay?!), there are certain home decor mistakes I’d never point out to a homeowner. Some of these mistakes are difficult or costly to reverse, so why bring them up unnecessarily? That said, here are the five most common missteps to avoid so you can sidestep these pitfalls before they happen in your own home.

1. DIY Gone Wrong

I’m a huge advocate of DIY projects—my husband and I have tackled nearly everything in our home, from tiling to electrical work, plumbing, and drywall. But there’s a critical difference between well-executed DIY and “winging it.” Poorly executed DIY projects can not only look amateurish but also jeopardize your home’s integrity and resale value. Common offenders include incorrect waterproofing in showers, low-quality materials (hello, cheap paint), and sketchy electrical work. These issues can lead to safety hazards and costly repairs down the road. Remember, investing time and money upfront to do it right pays off in the long run.

（from: @seventhdaydesign)

2. A Themey Room

Every room should have a color palette and concept, but avoid going overboard with a specific theme. For instance, consider the “ocean” bathrooms that were popular in the 2000s: blue walls, seashell décor, ocean-themed art, and maybe even a fish or two. While the intention is to evoke a seaside vibe, the result often feels kitschy and one-dimensional. Instead, aim for a curated, layered look that reflects your personal style rather than resembling a themed cruise line cabin.

(from: @maros_designs)

3. Matching Furniture Sets

Yes, matching furniture sets can be tempting—they’re convenient and often more affordable. But they also tend to make a space feel uninspired and lack character. To create a more dynamic and visually interesting room, mix and match pieces that complement one another. For example, opt for a bedframe that contrasts with your nightstands or select dressers with a shared color or design style without being identical. A curated look adds depth and personality to your space.

4. Word Art

I’m sorry to say it, but hanging signs that say “Home is where the heart is” or “Live, laugh, love” feels overdone and impersonal. Instead, opt for artwork that has a story or personal significance. Thrifted pieces, DIY creations, or commissioned works can bring authenticity and character to your home. Art should evoke emotions and reflect your unique journey—not simply state the obvious.

(from: @tereestyles)

5. Improper Curtain Installation

Curtains can make or break a room’s design, yet they’re often hung incorrectly. Common mistakes include hanging them too low, too narrow, or choosing curtains that are too short or look cheap (grommet curtains, I’m looking at you). To achieve a polished look, hang curtains high and wide, ensuring they just skim the floor. Use pinch pleats and drapery hooks for a tailored finish, and always steam the fabric for a crisp, professional appearance. Properly hung curtains can elevate the entire room’s aesthetic.

Conclusion

Home decor mistakes are easy to make, but with a little attention to detail and a focus on quality, you can avoid these common pitfalls. Whether it’s perfecting your DIY skills, curating unique furniture combinations, or investing in custom curtains, small changes can make a big impact. Your home should be a reflection of your personality and taste—a space that tells your story. By keeping these tips in mind, you’ll create a home that not only looks stunning but also feels authentically yours.

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