- Fall 2026 standard registration runs September 18-November 4, with the exam window November 10-December 15, 2026.
- Standard registration is $525 member / $795 non-member; late registration (Nov 5-18) rises to $625/$935.
- Students can register for $185, and test-center appointments (vs. remote) add a $50 fee.
- The exam is 120 multiple-choice questions in two hours, with Construction Documents (22%) as the largest domain.
2026 Testing Window Overview
The Construction Documents Technologist (CDT) credential, administered by the Construction Specifications Institute (CSI), is not a walk-in, take-it-anytime exam. It runs on defined testing windows tied to specific registration periods. For the fall 2026 cycle, the testing window is November 10-December 15, 2026, and it's preceded by a multi-stage registration schedule that determines how much you'll pay and how much time you'll have to prepare.
Understanding this calendar matters because CDT candidates aren't just competing against exam content - they're managing a fixed enrollment deadline and a compressed prep runway. If you're still deciding whether the credential fits your career goals, it helps to first understand what CDT certification actually involves and whether it's worth pursuing before locking in a testing date.
Registration Deadlines and Fees
CSI structures CDT registration in tiers, with pricing that increases the closer you register to the exam window. For the fall 2026 cycle:
- Early registration: $425 member / $685 non-member (closed before the standard window opened)
- Standard registration (September 18-November 4, 2026): $525 member / $795 non-member
- Final registration (November 5-18, 2026): $625 member / $935 non-member
- Student registration: $185 (available throughout the cycle for eligible students)
- Test-center appointment fee: an additional $50 if you choose an in-person Meazure Learning test center over remote proctoring
These fees represent a meaningful investment, so it's worth reviewing a full breakdown of CDT certification cost before you commit to a registration tier. Registering early - or at least during the standard window rather than waiting for final registration - can save you a noticeable amount, money that's better spent on study materials or a practice exam.
| Registration Tier | Dates | Member Fee | Non-Member Fee |
|---|---|---|---|
| Early | Prior to Sept 18 | $425 | $685 |
| Standard | Sept 18 - Nov 4, 2026 | $525 | $795 |
| Final | Nov 5 - 18, 2026 | $625 | $935 |
| Student | Throughout cycle | $185 | |
Key Takeaway
If you register during final registration (Nov 5-18), you'll have only a few weeks before the exam window opens on November 10 - plan your study schedule around registering earlier whenever possible.
How Scheduling Works With Prolydian
Once registered, candidates schedule their actual appointment through Prolydian, the platform CSI uses to coordinate testing. From there, you choose between two delivery formats:
- Remote online proctoring - take the exam from home or office using your own computer and webcam, with no additional fee
- In-person testing - sit for the exam at a Meazure Learning test center, which adds a $50 fee to your registration cost
Both formats deliver the same 120-question exam under the same two-hour time limit. Your choice mostly comes down to personal preference: some candidates focus better in a dedicated test-center environment away from home distractions, while others prefer the convenience and lower cost of remote testing. Either way, book your specific appointment as soon as your registration is confirmed - testing slots within the November 10-December 15 window can fill up, especially near the end of the period.
Exam Format on Test Day
The CDT exam consists of 120 multiple-choice questions to be completed in two hours. That's roughly one minute per question, which means pacing matters as much as content knowledge. There's no essay or scenario-simulation component - every question is multiple choice, drawn from CSI's eight official knowledge domains.
Eligibility is straightforward: a high school diploma or equivalent is required. Two years of industry experience or relevant college coursework is recommended, but it's not a mandatory prerequisite - meaning candidates from varied backgrounds, including those newer to the architecture/engineering/construction/owner (AECO) industry, can sit for the exam. For a full breakdown of who qualifies and how, see CDT requirements.
Because the format is fixed and multiple-choice-only, much of your preparation should focus on recognizing terminology, sequencing (like the order of project delivery phases), and correctly interpreting construction document language - not on essay writing or open-ended problem solving.
Domain Weighting and What It Means for Your Timeline
CSI organizes the CDT exam into eight domains, each weighted differently. Knowing these weights should directly shape how you allocate your remaining study time before your scheduled window:
Domain 4: Construction Documents (22%)
The largest domain by far, covering the structure, purpose, and coordination of specifications, drawings, and related project documents.
- Understand the relationship between drawings and specifications
- Know CSI's format standards for organizing project manuals
Domain 7: Construction (15%)
The second-largest domain, focused on activities and responsibilities during the actual construction phase.
- Understand contract administration during construction
- Know how submittals, RFIs, and change orders function in practice
The remaining six domains - Fundamentals (13%), Design Process (12%), Project Conception and Delivery (11%), Procurement (10%), Preconstruction (9%), and Life Cycle Activities (8%) - round out the exam. Together, Construction Documents and Construction make up 37% of your total score, so spending disproportionate study time there is a rational strategy, not a shortcut. For a complete walkthrough of all eight areas, see the CDT exam domains guide.
Key Takeaway
Because Construction Documents and Construction together account for 37% of the exam, prioritize these two domains first when scheduling your remaining study weeks before your test date.
A Domain-Based Prep Timeline for the Fall 2026 Window
If you register during the standard window (September 18-November 4) and test during the November 10-December 15 window, you have a natural runway of several weeks to structure your preparation around domain weight rather than a generic calendar. Below is one way to sequence it - adjust based on your own start date relative to the registration and exam windows.
Fundamentals & Project Conception and Delivery
- Review core terminology and delivery method basics
- Work through the Project Delivery Practice Guide, third edition
Design Process & Procurement
- Study how design phases connect to procurement documents
- Cross-reference CSI/AIA/EJCDC materials listed in official references
Construction Documents (heaviest focus)
- Drill specification formatting and document coordination
- Take timed practice questions targeting this 22% domain
Construction, Preconstruction & Life Cycle Activities
- Review contract administration and closeout processes
- Run a full 120-question timed practice session
This is one framework, not the only path. For a more detailed, step-by-step approach to first-attempt success, see the CDT study guide. If you're unsure how demanding the exam actually is relative to your background, how hard the CDT exam is breaks down the difficulty factors in more depth, and CDT pass rate data can help you calibrate expectations.
Results Timing and Certification Maintenance
Once you complete your exam, results are generally released six to eight weeks after the testing window closes. For the fall 2026 window (closing December 15), that means most candidates should expect results sometime in late January to early February 2027. Plan accordingly if you need the credential for a job application, promotion, or bid requirement - this isn't an instant-results exam.
If you're weighing whether the specific passing threshold is within reach, review CDT passing score details for exactly what's required. And once certified, don't forget that CDT isn't a one-time achievement: certification lasts three years, and renewal requires 24 learning units, all relevant to the AECO industry, with at least half specifically aligned with the CDT credential. Standard renewal fees are $160 for members and $220 for non-members.
Many professionals pursue CDT alongside broader career planning - reviewing CDT jobs and CDT salary guide data can help frame how the credential fits into your longer-term plans, while CDT training resources support both initial certification and renewal learning units.
Key Takeaway
Budget for renewal from day one: three-year cycles with 24 learning units mean CDT is an ongoing commitment, not a single exam event.
Before your scheduled date arrives, run through practice questions on our practice test platform to build familiarity with the 120-question, two-hour format. Consistent timed practice on CDT Exam Prep is one of the most reliable ways to confirm you're pacing correctly before the real testing window opens. If you're newer to the field and still exploring the basics, start with what CDT is or CDT meaning for foundational context, and check the CDT cheat sheet for a quick-reference review closer to your exam date.
Frequently Asked Questions
The fall 2026 CDT testing window runs from November 10 to December 15, 2026. Standard registration for this window is September 18-November 4, 2026.
You can still register during the final registration period, November 5-18, 2026, but fees increase to $625 for members and $935 for non-members, compared to $525/$795 during standard registration.
Both options are available through Prolydian scheduling. Remote proctoring has no added fee, while testing at a Meazure Learning test center adds a $50 fee to your registration.
Results are generally released six to eight weeks after the testing window closes, so plan your certification timeline with that delay in mind.
Yes. Student registration for the CDT exam is $185, significantly lower than the standard member or non-member rates.