Blog Post: Top 5 Mistakes to Avoid in Interior Renders, and How to Fix Them

Ruan van Huyssteen

Ruan van Huyssteen

I’m the person behind ANT-Arch, a visualisation studio built from a love of architecture, storytelling, and turning ideas into images that resonate.

By day, I work for an incredible firm called MODE GRP, where I’m part of a talented team specialising in commercial interior design. It's a fast-paced, collaborative environment that constantly pushes me to think creatively and work with precision.

In my spare time, I run ANT-Arch, offering realistic perspective renderings for architects, interior designers, and furniture makers who want their ideas to be seen and understood at a glance. I also write the occasional architectural blog post, exploring where we find inspiration and why visualisation matters in today's design world.

When I’m not modelling or rendering, you’ll probably find me watching design documentaries, sci-fi, or anything about space, because nothing fuels creativity like curiosity. I believe that every design has a story, and I love helping others tell theirs, one frame at a time.

Share:

In the world of architectural visualisation, it’s often the smallest details that make or break a render. While a concept may be solid, poor execution in the visuals can distract, confuse, or even mislead the client.

Here are five common mistakes I’ve seen in interior or exterior renders, and how to avoid them.

1. Incorrect Scale of Furniture and Fixtures

The mistake: Oversized chairs, miniature pendant lights, or bathroom fittings that look out of place.
The fix: Always double-check model dimensions and human scale references. Accurate proportions are crucial to achieving realism and spatial trust.

2. Unrealistic Lighting

The mistake: Spaces that are either overly bright or impossibly moody with no clear light source.
The fix: Observe how light behaves in similar real-life spaces. Use a mix of natural and artificial lighting and balance exposure settings carefully. Shadows should be soft and believable, not dramatic unless intentionally styled.

3. Over-shiny or Flat Materials

The mistake: Chrome that looks like a mirror, wood that looks like plastic, or matte finishes with no texture.
The fix: Work with good-quality textures and tweak reflection, gloss, and bump maps. Real materials have subtle imperfections and texture. That’s what makes them look real.

4. Lifeless Composition

The mistake: A technically correct render that feels empty or lacks atmosphere.
The fix: Add context. Consider camera angles, foreground framing (like plants, chairs, or doorways), and soft styling elements like a coffee cup or book. A lived-in look can make the space feel human and inviting.

5. Ignoring the Client’s Mood Board

The mistake: Renders that technically match the plans but miss the tone, materiality, or emotion of the original concept.
The fix: At ANT-Arch, we always refer closely to the interior designer or architect’s mood board. It’s not just about matching colours — it’s about capturing the essence and feeling of the space they envisioned.

Conclusion A great interior render is more than just a pretty picture. It is a tool to communicate design intent clearly and convincingly. Avoiding these common pitfalls helps ensure your pitch or presentation lands with confidence.

Pro Tips from the Render Desk

If you really want to take your renders to the next level, here are some expert habits I swear by:

1. Check for floating furniture.
Hovering chairs or cabinets are a dead giveaway that the render is fake. Always zoom in and make sure everything is grounded properly.

2. Use dual light temperatures.
Most rooms have a mix of warm and cool lighting, often at opposite ends. A blend of Kelvin temperatures makes a space feel layered and real.

3. Everything reflects — even black or fabric.
Even if it’s just 4 out of 100 on your reflection setting, every surface should reflect a little. This subtle detail gives a huge boost to realism.

4. Nothing is perfectly aligned.
Nudge a chair. Rotate a table by 1 degree. No real space has every object perfectly perpendicular. That natural “imperfection” sells the story.

5. Post-edit every image.
Even a light adjustment in clarity or shadow can lift a render. Most importantly: desaturate a little. Oversaturated colours scream “CGI” and flatten the mood.

Want renders that hold up under client scrutiny — and make them feel something?
Let’s talk. ANT-Arch helps bring your interior concepts to life with realism, detail, and atmosphere.

Be the first to read my stories

Get Inspired by the World of Visualisation