CID

Designers with formal education and supervised practice who want portable proof of competence for clients, employers, or licensure pathways. Check the certifying body's eligibility matrix - degree type, credit hours, and work experience vary by pathway - before paying for anything.

It is delivered as multiple choice, split across the practice domains of space planning, codes and standards, construction and materials, lighting and mechanical systems, documentation, and professional practice. Confirm the current structure, including whether any sections are case-based, on the official site.

Those figures are set by the certifying organization and are updated periodically, so this page deliberately does not quote them. Look up the current appointment length and item count in the official candidate handbook before scheduling.

The passing standard is set and periodically revised by the certifying body, often as a scaled score rather than a raw percentage. The official handbook states the current passing score and how it is calculated; rely on that, not on forum estimates.

Most failures trace to codes and accessibility details, egress calculations, and finish or specification judgment rather than to design theory. Candidates who only review studio knowledge underestimate the regulatory and technical sections, and time pressure exposes anyone who has not practiced full-length timed sets.

Retakes are generally permitted, but waiting periods, limits on attempts, and fees are governed by the certifying body's policy and can change. Read the retake section of the official handbook and plan your study window around any mandatory wait.

Start with your weakest domain using a diagnostic or practice set, then layer codes and construction because they inform planning decisions. Add systems and documentation next, and finish with timed mixed sets so you practice switching between topics under pressure.

Prioritize primary sources: the adopted building code, accessibility standards, and life-safety provisions, plus a solid construction and materials text. The certifying body publishes a reference list; use it, and avoid relying on secondary summaries for code numbers and dimensions.

Most candidates need several months of consistent study alongside work. Build a schedule that covers every domain at least twice, reserve the final weeks for timed practice, and book your appointment only once practice scores are stable.

Renewal and continuing-education requirements are set by the certifying organization and may change, so verify the current cycle, credit hours, and any lapse or reinstatement rules on its website rather than assuming lifetime validity.