EDAC
EDAC - Evidence-Based Design Accreditation and Certification
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Cheat sheet
Keep the key ideas within reach.
ExploreKey terms
Get comfortable with the vocabulary.
ExploreStudy plan
Give each week a clear focus.
ExploreCommon mistakes
Understand the traps and how to avoid them.
ExploreCase studies
Put your knowledge to work in context.
ExploreExam-day guide
Prepare for the day ahead.
ExploreAbout this exam
The Evidence-Based Design Accreditation and Certification (EDAC) credential is a professional certification for people who want to show that they can apply research findings rigorously to the design of built environments - most commonly in healthcare, but the underlying method travels to any project type where outcomes matter. Candidates typically include architects, interior designers, planners, facility and clinical operations staff, consultants, and researchers who sit on project teams where design decisions are expected to be defensible rather than habitual. The exam tests the full arc of the process: understanding what evidence-based design is and why clients fund it, turning client and user goals into measurable objectives, locating and critically appraising relevant literature (including recognizing weak study designs and overstated claims), converting findings into design concepts and tracking whether the design actually honored them, selecting research methods and running post-occupancy evaluation, and collaborating with stakeholders through implementation and dissemination. Preparation is usually self-directed: study the core texts and readings on evidence-based design, work through the process stages until you can explain each one in your own words, and practice applying the method to a project you know well. Because the credential is administered by an independent body, confirm current exam logistics - scheduling, fees, scoring, and any eligibility requirements - directly with that organization before you register.
What you'll study
About EDAC preparation
What is on the exam, in broad strokes?
The content follows the evidence-based design process end to end: the concepts and business case, defining goals and measurable objectives, finding and critically appraising evidence, translating it into design decisions, research methods and post-occupancy evaluation, and stakeholder collaboration through implementation and dissemination.
How long is the exam and how many questions are there?
Those figures are set by the certifying body and can change between exam cycles, so check the current candidate handbook on the official organization's website rather than relying on what a study forum said last year. Confirm both before you build a practice-test pacing plan.
What does it cost and what is the passing score?
Fees, scoring rules, and any membership discounts are published by the certifying organization. Look them up on its site at the point you register, since pricing and policies are revised periodically. No third-party summary should be treated as authoritative on either point.
How hard is it really?
The difficulty is less about obscure facts and more about judgment. Questions often present a project scenario and ask which evidence is most credible, which objective is properly measurable, or what a finding does and does not support. Candidates who have only memorized definitions tend to find it harder than those who have applied the process.
What if I fail - can I retake it?
Retake rules, waiting periods, and any additional fees are set by the certifying body and are not universal. Check the official policy before you sit the exam so you know your options, and build in enough study time that a retake is unlikely to be needed.
In what order should I study the domains?
Follow the process rather than the percentages. Get concepts and the business case solid first, then objectives, then appraising evidence - that third piece is usually the weakest area and deserves the most time. Design translation, methods and POE, and collaboration build naturally on the earlier material.
Where do candidates typically lose points?
Two places: treating weak evidence as strong because it supports a favored design idea, and writing objectives that cannot be measured. Also common is confusing post-occupancy evaluation with informal user feedback. Practice phrasing objectives with an indicator, a direction, and a way to measure them.
Do I need a design or healthcare background to pass?
No single background is required, but the exam assumes fluency with design project delivery and with research vocabulary. If you come from clinical or operations side, strengthen your grasp of design phases; if you come from design, strengthen critical appraisal of study design and statistics literacy.
Is EDAC the same as a license or a degree?
No. It is a professional certification of knowledge in evidence-based design, separate from architectural licensure and from academic credentials. It does not authorize practice or replace any jurisdiction's registration requirements; check with your licensing board for those.