How to Write an Interior Design Case Study
A strong interior design case study explains the client's problem and how it was solved, uses specific details instead of generic adjectives, pairs photography with copy that actually describes it, mentions budget and value where relevant, and shows how the space is used after the client moves in.
How did the client want to use their new room, and how did the designer make that happen?
For almost 10 years, a major part of my job was deciding which interior design projects were good enough to feature at Houzz. We browsed through hundreds of beautiful projects looking for the homes that would connect with the audience – a hard job, but someone had to do it. Some got featured, and others didn't. Of those that did, a few things consistently increased how much readers engaged with them. Here's what I learned.
Should I mention budget in a design case study?
Yes. Mentioning budget and cost-saving decisions increases reader engagement, because it signals value regardless of a client's own budget.
Whether you're targeting clients with a modest or huge bank balance, it's worth mentioning cost. Everyone wants to feel they've got value for money, even wealthy clients – and for the wider market, budget is always a top consideration. Case study articles that explained how a designer saved the client money were consistently among the most popular on Houzz, so don't shy away from this in your portfolio write-ups.
If you saved money by using inexpensive materials for kitchen carcasses paired with good quality oak doors, say so. If you cut costs by using an offcut of marble worktop in the bathroom, mention it. Readers won't think you're cheap, they'll think you went above and beyond to protect your client's budget.
How do I explain my design decisions in a portfolio write-up?
Explain the ‘why’ behind each decision, not just the ‘what’. Readers will connect with the reasoning.
Case studies that stand out are the ones that solve a visible problem for the client. People want to understand the clever ways a designer turned a problem into a solution, and whether that same designer could do something similar for them.
If a client needed more space but couldn't extend, explain how an ingenious layout solved the challenge. If you devised clever hidden storage, make it a highlight of the write-up, rather than just a footnote. People respond to a genius solution, so showcase it wherever you can.
How specific should my case study language be?
Use specific and concrete language, rather than generic adjectives.
Words like ‘stunning’ and ‘beautiful’ are perfectly fine for describing look and feel (and in fact I use them a lot), but they shouldn't carry the whole description. Readers connect with something more concrete. Instead of ‘a beautiful family kitchen’, describe a kitchen designed around a family who cooks together most evenings and needed two people to be able to work in it without colliding.
Specific write-ups are more interesting to read, and they're also easier for search engines and AI tools to pick up on. Concrete, specific details are far more likely to get quoted or ranked than vague adjectives.
Do the photos and the copy need to match?
Yes. Mismatched photography and copy undermine an otherwise strong case study.
Good photography is crucial for presenting a project, but it doesn't tell the whole story on its own. If you've invested in a strong set of images, it's worth taking the time to pair them with copy that actually describes what's in them.
It's common to see project photography that looks excellent, let down by two thin lines of copy sitting next to it. When you upload images, upload a full description alongside them that genuinely explains your approach and what it meant for the client. It's one of the single biggest upgrades available to most portfolios.
Should I include the client's perspective?
Yes. Showing how a space is used after handover makes a case study more credible.
Where possible, include how the room actually functions for the people living in it. Don't stop at handover, and instead share what happened after. It's nice to know a client loved the finished room on the day, but it's more interesting to know how they're using it now. Mention that the kitchen island gets used every morning, or that the kids genuinely do spend time in their reading nook. This kind of detail shows you're creating spaces that work for real life, not just rooms that photograph well.
How to apply this to your own portfolio
None of this requires a bigger budget, better photography, or more dramatic before-and-afters. The trick is to treat the write-up as seriously as the design itself. Ask why a decision was made, be specific in your descriptions, mention value honestly, and include what happened after the cameras left.
The rooms that connected most with readers at Houzz weren’t those that looked overly impressive or luxurious, they were the projects I could actually tell a story about. And that's true whether the audience is an editor, a prospective client, or an AI tool working out what makes your work worth recommending.
FAQ
What should an interior design case study include? The client's original problem, the specific decisions made to solve it, budget or value context where relevant, photography paired with matching descriptive copy, and how the space is being used after handover.
How long should a project write-up be? Long enough to explain the problem and the reasoning behind the solution. Around 400 words is enough for most single-project case studies, but it can be longer if the project involved several distinct design decisions.
Does budget information help or hurt a portfolio? It helps. Mentioning cost-conscious decisions signals value to budget-aware readers and thoughtfulness to higher-budget clients. Both of these audiences read it as good judgement, rather than a sign of cutting corners.
How often should I update my case studies? Whenever a new project is complete, and ideally revisited a few months after handover to add a line about how the space is actually being used. This detail is often missing and adds real credibility.
Want help turning your own projects into stories that actually get read? Get in touch.
