- NCIDQ has 360 items across IDFX (115), IDIX (130), and IDPX (115) over 10 total hours.
- Each section is scored 200-800; you need 500 on every section to pass.
- IDIX Construction Documents alone carries 32% of that section's weight-the single largest content area.
- Route 1 totals $1,375; Route 2 totals $1,390 due to split Part 1/Part 2 application fees.
What This Cheat Sheet Covers
This is a condensed, one-page-style reference for the NCIDQ Examination as administered by CIDQ through Prometric test centers and the ProProctor remote platform. It is not a substitute for deep content review-use it as a rapid-recall tool during the final weeks before test day, or as a quick sanity check while building your study plan with the NCIDQ Study Guide 2026. Every number below comes directly from the current exam blueprint, fee schedule, and eligibility framework so you can trust it during crunch time.
Exam Structure at a Glance
The 2026 NCIDQ Examination has three sections, and candidates typically sit for them separately rather than all at once. Together they total 360 items, of which 315 are scored and 45 are unscored pretest items you cannot identify during the exam.
| Section | Items | Time | Focus |
|---|---|---|---|
| IDFX | 115 | 3 hours | Foundational design fundamentals |
| IDIX | 130 | 4 hours | Interior-specific technical practice |
| IDPX | 115 | 3 hours | Project and practicum management |
Question formats include multiple choice, drag-and-place, fill-in-the-blank, and hot spot items-so the exam is not a pure recall test. You need to be comfortable manipulating layouts and identifying spatial or code errors on-screen, not just picking an answer from a list. If you want a deeper breakdown of what "difficult" actually means on this exam, see How Hard Is the NCIDQ Exam? Complete Difficulty Guide 2026.
Key Takeaway
Practice drag-and-place and hot-spot question types specifically-these formats trip up candidates who only rehearse multiple choice. Build familiarity with the interaction style, not just the content, using tools like our NCIDQ practice tests.
Scoring and Passing Score
Each of the three sections-IDFX, IDIX, and IDPX-is scored independently on a 200-800 scale, and you must reach 500 on each one to pass that section. There is no combined or averaged score across sections; a strong IDIX result cannot offset a failing IDFX result. For a full explanation of how raw scores convert to the scaled 200-800 range, read NCIDQ Passing Score 2026: Exactly What You Need to Pass.
The 16 Domains Ranked by Weight
The exam blueprint breaks each section into content domains with specific percentage weightings. Knowing these weights tells you exactly where to spend your limited study hours. The full domain-by-domain breakdown lives in NCIDQ Exam Domains 2026: Complete Guide to All 16 Content Areas, but here are the heaviest-weighted domains per section.
IDFX - Schematics (20%)
The largest IDFX domain. Expect items on developing schematic design solutions from programming data, including diagramming relationships and early space planning decisions.
- Practice translating a program into a bubble diagram or blocking plan quickly
IDFX - Space Planning (19%)
Tests your ability to arrange furniture, fixtures, and circulation within a given floor plate while respecting adjacencies and code clearances.
- Drill clearance dimensions for accessible routes and egress width
IDIX - Construction Documents (32%)
The single largest content area across the entire exam. This domain covers producing and interpreting drawing sets, schedules, and annotation used to communicate design intent for construction.
- Review sheet organization, symbols, and cross-referencing conventions
IDIX - Integration and FF&E (19%)
Focuses on coordinating furniture, fixtures, and equipment with building systems and finishes across a project.
- Practice reading FF&E schedules against plan symbols
IDPX - Contracts, Procurement, and Permitting (28%)
The heaviest IDPX domain by far. Covers contract types, bidding/procurement processes, and permit review sequencing.
- Memorize the typical permitting and procurement sequence end to end
Because IDIX Construction Documents and IDPX Contracts, Procurement, and Permitting are the two heaviest single domains on the entire exam, candidates who are pressed for time should prioritize these two areas above all others.
Fees and Registration Routes
CIDQ offers two eligibility routes, and the fee structure differs slightly between them because of how the application is split. For a line-by-line breakdown of every fee, see NCIDQ Certification Cost 2026: Complete Pricing Breakdown.
| Item | Route 1 | Route 2 |
|---|---|---|
| Application fee | $235 | $100 (Part 1) + $150 (Part 2) |
| IDFX exam fee | $305 | $305 |
| IDIX exam fee | $470 | $470 |
| IDPX exam fee | $365 | $365 |
| Total | $1,375 | $1,390 |
The $15 difference between routes comes entirely from the split application fee structure on Route 2. Neither total includes optional retake fees if you need to resit a section.
Eligibility Snapshot
Standard eligibility combines qualifying interior-design or architecture education with a range of verified work hours-between 3,520 and 7,040 hours depending on your education path. Eligible final-year students may sit for IDFX before completing their experience hours, which lets many candidates start testing while still in school. Full details on which education-and-experience combinations qualify are in NCIDQ Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Key Takeaway
If you're still accumulating work hours, take IDFX first while it's available to you as a final-year student-don't wait until every hour is logged to start testing.
Codes and Standards You Must Know
The 2026 blueprint retired PRAC in favor of IDIX, and the referenced code editions were updated accordingly. Memorize these exact editions-mixing up code years is an easy way to miss items you otherwise understand conceptually:
- 2021 International Building Code (IBC) - governing code for occupancy, egress, and construction classification
- 2021 International Residential Code (IRC) - relevant for residential-scope projects
- 2021 International Plumbing Code (IPC) - fixture counts and plumbing-adjacent coordination
- 2017 ICC A117.1 - accessibility standards referenced alongside IBC provisions
IDIX Codes and Life Safety weighs in at 16% of that section, but code knowledge bleeds into Space Planning, Construction Documents, and Site Observation and Close-Out as well, so this isn't isolated study-it's foundational across all three exam sections.
Spring 2026 Pass Rates
Spring 2026 pass rates were 53% for IDFX, 61% for IDIX, and 60% for IDPX. Notice that IDFX-the "foundational" section-had the lowest pass rate of the three, which suggests candidates sometimes underestimate it relative to the more technically dense IDIX and IDPX sections. For trend context and what these numbers mean for your prep strategy, read NCIDQ Pass Rate 2026: What the Data Shows.
Last-Mile Review Schedule
In the final two weeks before any single section, rotate your review to match domain weight rather than spreading time evenly. This is the one place a generic study-methodology tactic-spaced, weighted repetition-actually pays off on this specific exam.
Heaviest domains first
- Drill Construction Documents (32%) with real sheet sets and schedules
- Review Integration and FF&E (19%) coordination scenarios
Mid-weight and format practice
- Cover Consultant Drawing Coordination (18%) and Codes and Life Safety (16%)
- Time yourself on drag-and-place and hot-spot practice items
Procurement-heavy focus
- Prioritize Contracts, Procurement, and Permitting (28%) and Construction Process (21%)
- Finish with Feasibility Studies, Scheduling and Budgeting, and Site Observation and Close-Out
This kind of weighted scheduling is worth building into your entire prep timeline, not just the final two weeks-the full strategy is covered in the NCIDQ Study Guide. Running timed practice sets through a full-length practice test platform in these final weeks is the closest simulation you'll get to actual Prometric or ProProctor conditions.
Certification Renewal After You Pass
Passing all three sections earns you active certification, which renews annually for $85 and requires five HSW (health, safety, welfare) continuing-education hours each cycle. Budget this recurring cost and CE requirement into your long-term planning-certification isn't a one-time expense. If you're still weighing whether the investment makes sense for your career, see Is the NCIDQ Certification Worth It? Complete ROI Analysis 2026 and NCIDQ Salary Guide 2026: Complete Earnings Analysis.
Frequently Asked Questions
Sections are registered and scored independently, so many candidates take IDFX first, but eligibility timing and personal readiness-not a mandated sequence-should drive your order.
IDIX Construction Documents at 32% of that section is the largest individual content area across all 16 domains, making it the highest-priority study target overall.
Yes. The 2026 blueprint references the 2021 IBC, IRC, and IPC along with the 2017 ICC A117.1, and confusing editions can cost you points on otherwise-known concepts.
Each of the three sections is scored on a 200-800 scale independently, and you need 500 on each section-there is no averaging across IDFX, IDIX, and IDPX.
Total costs are close: Route 1 totals $1,375 and Route 2 totals $1,390, with the difference coming from Route 2's split $100/$150 application fee structure rather than exam pricing.