Interior Decorating Certification Course

QC Design School’s online Interior Decorating course allows you to channel your passion for home décor into a successful decorating career.

Throughout this course, you’ll learn how to design custom interiors from the ground up. Discover a variety of historical and contemporary design styles, as well as classic and modern design materials. In step-by-step videos, you’ll learn how to create professional floorplans and furniture arrangements. You’ll also study color theory and its uses in home decorating.

Through hands-on and theory-based assignments, you’ll learn how to work with a variety of budget types and client personalities. You’ll also receive full business training so you can launch your own business!

IDDP Course Certification Badge

Upon graduation, you’ll receive an industry-recognized certification and the designation of International Design & Decorating Professional (IDDP). With your certificate and professional title, you’ll be ready to start your own business or work for an existing design firm right away.

This Course Is Best Suited For

  • Anyone with an interest in decorating interiors

  • Those who wish to start their own design business

  • Creative professionals ready for a career change

  • Individuals looking for a creative hobby or part-time career

  • Professionals already working in the design & decorating industry

Course Curriculum


Principles of Design

Learn about the elements and principles of design in the home. Discover what the decorating process looks like, from attracting clients to completing your designs. Learn all about color theory and popular design styles.

  • The World of Design and Decorating
  • The Role of an Interior Decorator
  • Design Foundations
  • The Design Process
  • Color Basics
  • Developing Color Palettes
  • Color Psychology
  • Applying Color
  • Contemporary Design Styles


Design Materials

Study basic and modern design materials that can be used in different areas of the home for a wide range of purposes, from ceramic and stone to glass and metal. Learn about historical and international design styles, as well as the various wall treatments and textiles you can use to define each room.

  • Basic Design Materials (Wood, Stone, Brick, Plaster & Stucco, Ceramic)
  • Selecting Materials
  • Modern Design Materials (Concrete, Glass, Metals, Plastics)
  • Classic Design Styles (Historical & International)
  • Designing with Textiles
  • Mixing Prints & Patterns
  • Fibers & Textile Construction
  • Textile Uses
  • Wall Treatments
  • Ceilings
  • Painted Wall Treatments
  • Wallpaper
  • Alternative Wall Treatments
  • Early American Styles (Colonial, Georgian, Revivals, Victorian)
  • Global Design Styles (Chinese, Japanese, Islamic, Mexican, Southwestern, Scandinavian)


Lighting & Accessorizing

Study how types of lighting and fixtures help to create different atmospheres. Compare window treatments and learn how they can enhance your designs. Learn to customize interiors by showcasing accessories and arranging artwork, and gain professional accessorizing tips from award-winning designer, Jane Lockhart!

  • Lighting Function
  • Light Bulbs
  • Types of Lighting (Ambient, Task, Accent)
  • Lighting Planning
  • Window Treatments
  • Curtains & Drapes
  • Shutters, Shades & Blinds
  • Choosing & Displaying Accessories
  • Plants
  • Artwork
  • Early 20th Century Design Styles (Adirondack, Arts & Crafts Movement, Art Nouveau, Modernism, Art Deco, International)
  • Late Modernist & Early 21st-Century Design Styles (1950s-2010s)


Floorplanning & Furniture Layouts

Step-by-step videos teach you how to draw professional floorplans and create furniture arrangements. Practice drawing floorplans with scale dimensions of a room so you can create sketches for clients. Learn how to create furniture layouts that account for balance, traffic, and visual weight within a room.

  • Understanding Floorplans
  • Types of Drawings
  • Taking Measurements
  • Working with Scale
  • Drawing & Presenting a Floorplan
  • Creating Other Technical Drawings
  • Space Planning
  • Furniture Selection
  • Balance & Visual Weight
  • Practical Layout Considerations
  • Selecting Furniture


Designing Bedrooms, Kitchens, and Bathrooms

Explore special considerations for designing bedrooms, kitchens, and bathrooms. Learn about the professional contractors involved in renovations, and find out how to redecorate without a full remodel. Develop all the skills you need to create stylish and functional spaces.

  • Planning the Bedroom Design
  • Bedroom Components
  • Beds & Bedding
  • Bedroom Lighting
  • Bedroom Floors & Furniture
  • Kitchen Essentials
  • Kitchen Remodels
  • Kitchen Components & Storage
  • Kitchen Style
  • The Work Triangle
  • Kitchen Layouts
  • Open-Concept Kitchens
  • Common Kitchen Styles
  • Bathroom Layouts
  • Bathroom Surfaces
  • Bathroom Electrical & Lighting
  • Toilets, Bathtubs, Showers, Faucets
  • Vanities & Bathroom Furniture
  • Bathroom Storage & Accessorizing
  • Bathroom Design Considerations


Final Project

Complete a final project where you pull everything that you’ve learned together to create a custom-designed space for a hypothetical client. Show your tutor all of the skills you’ve learned, and prepare to launch your career!

  • Client Profiles
  • Site Evaluation
  • Before Photos
  • Rough Sketches
  • Professional Floorplan
  • Layout Options
  • Presenting Your Concept
  • Setting a Budget

UNIT G (Optional)

Business Training Series

Once you’ve completed units A-F of your Interior Decorating course, you have the option to complete a specialized business unit. Created specifically for interior decorators, you’ll study a variety of topics including:

  • Starting Your Own Business
  • Launching Your Business
  • Writing Your Business Plan
  • Financial Statements
  • Presenting Your Business Plan
  • Marketing and Promotion
  • Working with Clients
  • Developing Interpersonal Skills
  • Closing Techniques
  • Contracts and Billing
  • Consultations
  • Working with Contractors
  • Building Your Portfolio
  • Presenting Your Work

Sample Video

Furniture Layout

Watch the video to get an inside look at the online Interior Decorating course. QC tutor Angie Chapman walks you through the creation of a furniture layout.

Sample Assignment

QC’s step-by-step program will take you through every aspect of the interior decorating process. Hands-on assignments are created to put you in the decorator’s seat. You’ll analyze real-world scenarios that will develop your creative and professional skills as an interior decorator.

In the sample assignment below, you’ll refer to your texts on historical design styles to outline your concept for a vintage or retro style room. Choose your style, create a color palette, add wall treatments, and accessorize the space.

You will receive a Course Guide with easy-to-follow instructions on uploading your assignments to the Online Student Center and downloading your tutor’s evaluation and audio feedback. Additionally, QC’s helpful Student Support Team is ready and willing to guide you through your assignments and answer any questions you have along the way. Connect with the support team by phone, email or Live Chat – whichever you prefer.

“I have gained so much with the courses at QC Design School. It’s helped me gain confidence and knowledge as [a designer] and looking forward to more certificates ahead. The staff and teachers have been great and they have been so helpful through the courses I’ve enrolled in. Thanks, QC.”

Lorraine PutzInternational Design & Decorating Professional
Interior Decorating Course Logo Grey

Learn from Industry Experts

When you enroll with QC Design School, you’ll be matched with an industry professional currently working in the field who will review your work and provide you with in-depth feedback and advice on every assignment. These accomplished tutors have years of experience in the decorating industry and are eager to share their professional insight to help you succeed.

Your personal tutor will provide you with in-depth audio feedback on each assignment to let you know what you did well and how you could improve. Use this feedback to guide you through the next unit in your course.

Flexible Payment Plans

SAVE $500

One payment of $1198

Pay In Full

Save when you
pay in full.


Lower Payments

Start for $75

Installment Plan

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Your Tuition Includes

  • All course guides, lesson texts, materials, and instructional videos
  • Lifetime access to digital course materials in the Online Student Center
  • Access to student support 7 days a week
  • A complete business training series
  • Your certificate upon graduation
QC's 21-Day Money-Back Guarantee

21 Day Money-Back Guarantee

Once your enrollment has been processed, you have 21 days to review the course materials and decide whether you want to take the course. If you decide this course isn’t the right fit for you and your career goals, simply contact the school for shipping instructions. Once you return your course materials, unused, you’ll receive a full refund! As long as you haven’t submitted any work to your tutor yet, your tuition will be refunded in full.

Additional information on QC’s money-back guarantee is available in your enrollment agreement


Start A Successful Career In Design & Decorating

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“Getting my professional certifications from QC Design
School was one of the best career decisions I've ever made.”

“QC’s online courses, complete with dedicated tutors and extensive texts and assignments, were exactly what I needed to start a new career in design. I completed both the Professional Organizing and Interior Decorating courses and then started my own business. I’m happy that QC set me up for so much success!”

Bradley Ryan


Choose your second certification course

QC offers online design courses for every area of home design and decorating. Start a new and exciting career in one of these growing fields!

Professional Organizing Course
Home Staging Course
Staging for Designers Course
Feng Shui Design Course
Color Consultation Course
Aging In Place Course
Accelerate Your Design Business Workshop
Virtual Design Course
Floral Design Course

"I am really impressed with their professionalism"

“I am really happy so far with my experience with QC Design School. This is my first time doing an online course and I am really impressed with their professionalism. From my first inquiry, they replied back quickly and were very helpful in answering my countless questions. As well, I was expecting to have to wait a week or more to receive my package and instead, it arrived two days after I signed up! I enrolled on Monday, Feb. 6 and my books and art kit arrived on Feb. 9th. WOW. After reviewing everything in my course (outlines, books, assignments, etc.) I cannot wait to get started! I look forward to all that awaits me on this new path of becoming an Interior Designer, Home Stager & Organizer.”

Michelle Joyce

QC Design School Student

“I liked how you could work at your own pace. It has given me a solid foundation to build my organizing business. I am looking forward to completing the Feng Shui course, and then more. I am so glad that QC offers courses in all the different design areas. It is hard to find that outside of a traditional 4-year degree. Thank you!”

Terri OuelletteAdvanced International Organizing Professional, AIOP
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