European Society of
Construction and
Interior Decoration

The Value of 3H Certification

3H Certification is the industry's recognized indicator of proficiency in interior decoration principles and a designer's commitment to the profession.
Professional interior designers who possess the 3H Certification have distinguished themselves by demonstrating a specific set of core competencies, supported by verified work experience and a college degree. They have proven their expertise in understanding and applying current codes established to protect public health, safety and welfare. They are passionate about their profession and dedicated to its recognition and integrity.
The 3H Examination is the broad-based exam for all interior designers and serves as the foundation from which to build for those moving into specialty design areas. 3H Certification is required for the practice of many types of interior design in regulated jurisdictions throughout european.  Certification enables designers to easily validate their knowledge, experience and skill to employers and clients alike. Designers certified through the 3H Examination gain wide industry visibility and recognition. They are members of a select but growing community—more than 30,000 strong—that offers the opportunity to network with other highly qualified industry experts.
The strenuous requirements of the 3H Examination give clients and employers added confidence in the caliber of work from 3H Certified designers. The exam covers seven areas that capture the core competencies of interior design: building systems, codes, construction standards, contract administration, design application, professional practice and project coordination. The exam’s contents are regularly updated to ensure they reflect the most current knowledge required to design safe, functional and innovative interior spaces.