At The Interior Design Institute, we don’t just teach design principles — we empower students to uncover their own unique style and nurture their natural creativity. You’ll gain the technical knowledge and practical skills needed to confidently bring your design ideas to life through 12 in-depth modules covering everything from design principles and history to spatial planning, lighting, and materials. Our fully online course combines engaging video content, interactive workshops, and assignments at your own pace, with personalised feedback from experienced tutors and access to an exclusive student community. While many students complete the course in around 24 weeks, you have up to 12 months to finish, giving you the flexibility to balance learning with other commitments. Whether you’re pursuing a new career or enhancing your passion for design, this course provides the foundation and support to help you succeed.Registration Code: 45423
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Is The Interior Design Institute legit?
The Interior Design Institute (theinteriordesigninstitute.com) has a 4.8 out of 5 rating on OK.one, based on 200 user reviews collected here. It is listed under Education & Training and its reputation is excellent. Praise is nearly unanimous, with 98% rating it 4 stars or higher; Reviews mostly discuss User experience, Product, Quality. Last updated 2026-08-12.
What reviewers say
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Reviewers overwhelmingly had a great experience with this company. Customers frequently praise the comprehensive modules, noting that the course materials are thoroughly organized and easy to follow. Many people also appreciate the flexible, self-paced nature of the program, which allows them to balance their studies effortlessly. Reviewers consistently highlight the supportive tutors who provide detailed, encouraging feedback on every assignment to build confidence.
However, some people mentioned that certain design software programs can feel a bit complex or clunky to use without prior experience. Reviewers suggested that introducing earlier support or extra guidance for these digital tools would be extremely beneficial for beginners.
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Advanced modules are great
I have taken advantage of completing some advanced modules as part of my study and will continue to add more. It is great to have access to these courses within the Institute so additional enrolments are not required- particularly if you want to specialise in certain areas of design. It offers a layer of confidence once you graduate.
Reply from The Interior Design Institute2026-05-11
Thank you for your wonderful review, Amin 😊 We’re so pleased to hear that you’ve been enjoying the advanced modules and finding value in being able to expand your studies within the Institute.
It’s great to know the additional modules are helping build your confidence and support your goals to specialise in certain areas of design. Wishing you continued success throughout the rest of your studies!
I love the fact I can pick this up whenever I have some time. I am learning very useful, practical things to help me in the real world. Module 10 has been so helpful in showing me the process of billing and what is expected of me and what the client will be expecting. It gave me to confidence to work with my first client.
Reply from The Interior Design Institute2026-05-11
Thank you for your wonderful feedback, Tracey 😊 We’re so pleased to hear that the flexibility of the course has suited your lifestyle and that you’re finding the content practical and helpful in real-world situations.
It’s especially fantastic to hear that Module 10 gave you the confidence to work with your first client — that’s such an exciting milestone! Wishing you every success as you continue your design journey.
On line learning with your own pace to achieve your end result.
Value for money course with extra modules which can be completed along the way
Reply from The Interior Design Institute2026-05-11
Thank you for your wonderful feedback, Caterina 😊 We’re so pleased to hear that you’re enjoying the flexibility of learning at your own pace and finding the course great value for money.
It’s fantastic to know the extra modules have added to your learning experience. Wishing you continued success as you work towards your goals in interior design!
The course is thought provoking yet exciting. I'm learning a lot from this course. Robert, my course advisor is always on hand to assist with questions and queries... I'm glad I chose this course as I see a way-forward and alignment in terms of what I'm currently doing, work wise, and what I hope to achieve the through this course.
Reply from The Interior Design Institute2026-05-11
Thank you for your lovely feedback, Palesa 😊 We’re so pleased to hear that you’re enjoying the course and finding it both exciting and inspiring.
It’s wonderful to hear that your tutor has been such a great support, and we’re especially happy that the course aligns so well with your current work and future goals. Wishing you continued success on your journey!
This course is very thorough, the modules are easy to read, not too heavy, and written in a way that keeps you interested as it builds through the different modules. The assignments are explained well, often with examples so you know which way to head. I started this a long time ago, but have had periods of time when life and family and other work have just got too hectic and I didnt have the headspace. Being able to extend the course has been fantastic, and Im now almost finished. Its going to feel great to get there and I have learnt so much. The last few modules really get you thinking about how you are going to set up your business and I have found them very practical, with lots of notes to print out and keep to refer back to when I am in business.
Reply from The Interior Design Institute2026-05-06
Thank you so much for sharing your experience!
We’re really glad to hear you’ve found the course interesting, practical, and enjoyable throughout. It’s great that the modules have kept you engaged and that the assignments — with clear guidance and examples — have helped you stay on track.
Life can definitely get busy, so it’s wonderful to know the flexibility and extension options made it possible for you to keep going and now be so close to finishing — that’s a big achievement!
We’re especially pleased that the final modules are helping you think about setting up your business in a practical way. Those are such important steps, and having resources to refer back to can make all the difference.
Wishing you all the best as you complete the course — you’re nearly there! 😊
It is a very organized program with tons of great information for any level. The assignments are thorough and will give you the skills you need. My teacher has been incredible as well.
Reply from The Interior Design Institute2026-05-05
Thank you so much for your kind words, Garrett!
We’re really glad to hear you’re enjoying the course and finding it well-organized and informative. It’s great to know the assignments are helping you build the skills you need along the way 😊
We’re also so pleased to hear your tutor has been such a great support!
Wishing you all the best as you continue—thank you for your recommendation! ✨
The experience at IDI has been great thus far. The material is thorough, in depth and very detailed. I am blown away at all the new material I am learning, from floor plans to lighting, color and much more. Nothing is left out. The modules have given me so much experience to carry into the work field. I enjoy the feedback from my instructor and truly look forward to her suggestions as I move forward.
Reply from The Interior Design Institute2026-05-04
Thank you so much for your wonderful feedback, Margaret!
We’re really happy to hear you’re enjoying the depth and detail of the course—and it’s great to know you’re discovering so much across all areas, from floor plans to lighting, color, and more 😊
It’s especially lovely to hear that your tutor’s feedback is something you look forward to. That ongoing guidance really is such an important part of building confidence and real-world skills.
Wishing you all the best as you continue through the course—we’re excited to see everything you’ll go on to achieve! ✨
For a self-guided online learning platform, which is exactly what I was looking for to suit my situation, the courses are robust and excellently crafted. I feel like I’m coming away with a lot of new theoretical knowledge and practical skills that will serve me well in as an Interior Designer. And I don’t feel like I’m doing it alone, I’ve had to reach out for support and the helpful staff as well as my tutor have always responded quickly. I’m really pleased with my experience overall—what you put into it is what you get out of it, and I’m happy to say I’m learning a lot. No regrets about signing myself up, well done IDI!
Reply from The Interior Design Institute2026-05-04
Thank you so much for your lovely feedback, Carla!
We’re really pleased to hear the course has been such a good fit for your situation and that you’re gaining both theoretical knowledge and practical skills to support your journey as an Interior Designer 😊
It’s especially great to know you’ve felt supported along the way—both our team and tutors will be so happy to hear your kind words about their responsiveness and help.
We really appreciate your perspective on the learning experience, and we’re so glad you’re feeling confident in your progress. Wishing you continued success as you move through the course—thank you again for being part of IDI! ✨
I am learning so much by taking this course. My goal is just to enjoy learning more about interior design but it is definitely designed to take students as far as they want to go. The assignment feedback from the tutor is extremely detailed and helpful. The additional resource material that is linked to the various elements of the course is also very helpful and very extensive.
Reply from The Interior Design Institute2026-05-04
Thank you so much for your lovely feedback, Kathy!
We’re so glad to hear you’re enjoying the course and learning so much along the way. It’s great that you feel it supports both your personal interest and the option to take things even further—that flexibility is really important to us 😊
We’re also pleased to hear that the detailed tutor feedback and additional resources have been helpful in your journey.
Wishing you continued enjoyment and inspiration as you progress—we’re excited to see where it takes you!
I absolutely love the Interior Design Diploma, I am learning so much, and although challenging is making me a much better designer.
My tutor is fantastic and responds quickly and is always helpful with her response and feedback. I would highly recommend this course.
Reply from The Interior Design Institute2026-05-04
Thank you so much for your kind words, Natasha!
We’re so happy to hear how much you’re enjoying the course and that it’s helping you grow as a designer—even with the challenges along the way, that’s where the real progress happens 😊
It’s also wonderful to hear your tutor has been such a great support. We’ll be sure to pass on your feedback!
Wishing you continued success on your design journey—we can’t wait to see all you achieve ✨
Honestly every Module is well thought out. I am very much enjoying everything I am learning. Working a full time job with 4 children in competitive sports, I am so thankful to be able to pursue this course at my own pace!
Reply from The Interior Design Institute2026-04-30
Thank you so much, Natasha! 😊 It’s wonderful to hear how much you’re enjoying the course. Juggling a full-time job and a busy family life is no small feat, so we’re especially glad the flexible, self-paced structure is working well for you. Keep up the amazing work—you’re doing an incredible job balancing it all!
The Interior Design Institute has excellent modules within their courses which are relevant and exciting to do.
Reply from The Interior Design Institute2026-04-30
Thank you so much for your kind words! 😊 We’re delighted to hear that you’re enjoying the modules and finding them both relevant and exciting. It’s great to know the course is keeping you engaged—wishing you continued inspiration as you progress!
Interesting and enjoyable course broken down into manageable modules. I can learn and complete the course at a pace that suits me, and allows for more indepth research and learning.
Reply from The Interior Design Institute2026-04-29
Thanks so much for your kind words, Kim! 😊 We’re really glad to hear you’re enjoying the course and finding the module structure easy to follow. Being able to study at your own pace and dive deeper into topics that interest you is so important, so it’s great that this approach is working well for you. Wishing you all the best as you continue your learning journey!
Very good contents however you’ll like to have some video material as well uploaded with the modules.
Reply from The Interior Design Institute2026-04-29
Hi Atziri,
Thank you so much for your feedback—we really appreciate it 😊
We completely agree that having more video content alongside each module would be valuable, and it’s something we’re actively working on. We already offer a selection of videos, and we’re continuing to expand this library over time.
In the meantime, we also offer additional video-based learning through our MASTERSERIES with Darren Palmer, as well as regular live workshops covering a wide range of topics.
Thanks again for sharing your thoughts—it really helps guide what we improve next! If you need help, send us a message!
I'm enjoying the course so far, the modules are easy to read and the tutor is nice and helpful.
Reply from The Interior Design Institute2026-04-29
It’s great to hear you’re enjoying the course so far, Joyce! We’re so glad you’re finding the modules easy to follow and that your tutor has been supportive and helpful along the way. Wishing you continued success as you progress! 😊
I’ve learned a lot from this course so far, and I’m excited to keep moving forward. The forums have each helped me understand different aspects of design, which has been really valuable. I’ve also gained experience in creating presentations and developing floor plans—things I hadn’t really done before. I’m grateful to be part of this course and look forward to continuing the journey. Thank you.
Reply from The Interior Design Institute2026-04-28
Thanks so much for your kind words, Eric!
It’s great to hear how much you’ve been getting out of the course so far. The forums can be such a valuable space for exploring different ideas, so it’s wonderful that they’ve helped deepen your understanding of design. It’s also fantastic to see you building new skills in presentations and floor planning—those are big steps forward.
We’re really glad to have you with us and look forward to supporting you as you continue your journey. Keep up the great work!
I do love the institute. The summary’s and modules are very educational. I love the community and that each student are given a fantastic tutor to learn from and ask any questions you might have. The Student Support System are also great and always reliable to any questions at any time!
Reply from The Interior Design Institute2026-04-28
That’s so lovely to hear, Anisha!
We’re really glad you’re enjoying the Institute. It’s also wonderful to hear you value the community and your tutor support; having someone to guide you and answer questions can make such a difference.
And thank you for highlighting Student Support as well — the team will be so happy to know their help is appreciated!
Really grateful you took the time to share this 💛
The learnings are immediately transferable and applicable in real life. There isn’t much fluff and this has been helpful to hone in and elaborate on some of my previous design knowledge. I wouldn’t say it’s as in depth as I had hoped, but for as much information as you do get from this short course, I’m impressed. My tutor is also very thorough and offers insight on every assignment. I love the application and how I can truly learn and do this course anywhere (even while traveling).
Reply from The Interior Design Institute2026-04-27
Thanks so much for your thoughtful review, Mari!
We’re really glad to hear you found the course practical and easy to apply in real life—that’s exactly what we aim for. It’s great that the focused, no-fluff approach helped you build on your existing design knowledge, even if you were hoping for a bit more depth overall.
We’re also so pleased to hear your tutor has been thorough and supportive—having detailed, personalized feedback can make a big difference. And being able to study from anywhere, even while traveling, is such a bonus 😊
Thanks again for sharing your experience—we truly appreciate it!
I've really enjoyed the course so far. The modules are been relevant to what I expected I would need to have learnt, and have been really challenging! The additional support via online webinars and tutorials have been invaluable to the course so far.
Reply from The Interior Design Institute2026-04-27
That’s wonderful to hear, Kerrin 😊
It’s great that the modules are both relevant and challenging in the right way—that’s exactly what helps everything really click. We’re also really glad the webinars and tutorials have been supportive for you along the way.
Wishing you lots of continued progress and enjoyment as you move through the course!
I love that I am able to work at my pace. With work it's always a challenge to find time to work on my assignment, so I appreciate the time that is given without the fear of failing for not submitting an assignment on time.
Reply from The Interior Design Institute2026-04-27
Hi Shawna,
We are really glad to hear that 😊 Having the space to work at your own pace can make such a difference, especially when life and work get busy. It’s completely understandable how valuable it feels to be able to focus on your assignment without the pressure of strict deadlines or the worry of falling behind.
It sounds like you’re using that flexibility in a really positive way, and that’s exactly what it’s there for. Keep going at a pace that works for you!