For nearly 15 years, we have been successfully preparing designers to pass the IDEX (the interior design certification exam) in California.
No need to purchase all of the expensive reference books and building codes. Our IDEXPrep class is comprehensive and it covers the essential exam topics, and much more!
You get a full 75 days of access, and you can study anywhere you have an internet connection.
Our student passing rate is high and the good testimonials speak for themselves.
CCIDC’s Sunset Review hearing is March 24, 2026. Write a letter in support to the Sunset committee!
See sample letters at the bottom of this page https://ccidc.org/sunset-review-information/
CCIDC will be updating the IDEX for May 2026 which will test on the 2025 California Building Codes that became effective January 1, 2026. Our IDEXprep class is already up to date with 2025 California Building Codes. Enroll today.
NOTICE! March 11, 2026 – – UPDATED URL for CCIDC Continuing Education (CEU) courses is: https://ccidc.org/cid-ceu/
The California Council for Interior Design Certification (CCIDC) has a number of resources for CEUs for Certified Interior Designers. Check out the CEU on nonstructural earthquake retrofitting and requires reading the “Homeowners Guide to Nonstructural Retrofit” for 1 hour credit.
Continuing education is a requirement for all current Certified Interior Designers. CIDs need 10 hours (which equals 1.0 Units) every two years.
Despite what others claim, WE ARE the original IDEXprep.
On February 14, 2009, the IDEXprep.com domain was registered.
Four years later, on May 3, 2013, originalidexprep.com was registered
(see proof below)
Deni Mosser published the IDEXprep eGuide in March 2009. At that time, there were no other IDEX-specific study materials, books or classes available on the market.
The IDEXprep eGuide helped IDEX candidates study for the very first IDEX California exam (given in May 2009). The guide was published for 2-1/2 years (from March 2009 to September 2011).
In September 2011, Deni launched the IDEXprep Online Class which was, and remains to be, the first and best online class to prepare for the IDEX exam. With the eGuide and the online class, IDEXprep.com has been successfully preparing interior designers to pass the IDEX California exam 4 years before originalidexprep.com came into existence.
For the record, others who claim to be the original, simply are not.
IDEXPREP.COM is ” the ORIGINAL” IDEXprep class.
