NASCLA Contractor Exam Guide 2026: 115 Scored Questions and 24 References

NASCLA Commercial Exam in 2026: The Exact Current Map

The NASCLA Accredited Examination for Commercial General Building Contractors is a standardized trade examination. It is not a national contractor license, not a certification, and not automatic reciprocity. Passing can satisfy the trade-exam requirement at a participating licensing agency, but the agency still decides whether you qualify for its license classification and what other steps apply.

The current NASCLA Commercial Exam page links directly to a PSI Candidate Information Bulletin updated July 7, 2026. That bulletin controls the format, content counts, reference list, fee, scheduling rules, and test-center procedures used in this guide.

One headline correction matters: the current acceptance list contains 20 agencies across 18 jurisdictions, specifically 17 states plus the U.S. Virgin Islands. Calling that list 18 states is inaccurate.

Current Exam Snapshot

The passing ratio is 81 divided by 115, approximately 70.4%. Do not calculate pacing from only the scored questions: candidates must answer 125 displayed items, and PSI says the extra time for the 10 pretest questions is included in the 330-minute limit. The overall average is 2.64 minutes, or about two minutes 38 seconds, per displayed item.

What NASCLA Acceptance Actually Means

NASCLA's current participating-agency page lists these 20 agencies:

Alabama and South Carolina each contribute two agencies. The other 16 jurisdictions contribute one apiece, producing 20 agencies across 17 states and one territory.

NASCLA distinguishes administering agencies from accepting agencies. An administering agency uses the NASCLA examination as its state-specific trade exam; an accepting agency accepts it as a waiver of that trade examination. All administering agencies also accept it. The web page's color coding identifies the current category, so check the live agency page rather than copying an old state list.

A passing result does not waive every state requirement. Confirm the exact license classification, application, business-and-law examination, experience, financial responsibility, insurance, bonding, background, and other requirements directly with the agency. NASCLA does not publish one universal experience rule, bond amount, state fee, or processing time.

Eligibility, Application, Scheduling, and Fees

The NASCLA Accredited Examinations FAQ states that there are no prerequisites to submit an exam application and anyone is eligible to apply or sit. That statement concerns exam access only; it does not override a licensing agency's eligibility rules.

The sequence is:

1. Apply through the National Examination Database and pay the $65 NASCLA application fee.
2. Wait for approval and the PSI email containing the NASCC candidate ID and scheduling instructions. NASCLA says applications are typically processed within seven business days.
3. Pay PSI's $130 examination fee and schedule through the NASCLA PSI portal or by phone.
4. Test within the one-year approval period. The approval permits no more than three attempts.
5. After passing, create or use the NED account and purchase a $45 electronic transcript for each desired participating agency.
6. Apply separately to that agency for licensure.

The $130 PSI payment is valid for one year from payment, while exam eligibility runs one year from NASCLA approval. Treat those as separate clocks. If a candidate fails three times, NASCLA says a reapplication cannot be approved until the existing one-year eligibility period expires. The current program page does not publish a separate fixed waiting period between the first three attempts, so do not import a 30-day rule from unrelated state exams.

Official 12-Area Content Outline

The bulletin publishes exact counts, not detailed subdomain weights:

The percentages above are calculations from the official item counts and are rounded to one decimal place. Procurement and Contracting plus General Requirements contain 56 of 115 scored items, or 48.7%. Adding Site Construction produces 71 items, or 61.7%.

The public bulletin names the 12 areas but does not publish a detailed task-level blueprint underneath them. A prep provider may group topics or references for teaching, but those groupings are editorial and must not be presented as official subdomain weights or guaranteed question frequencies.

The 24 Approved Reference Entries

The July 7, 2026 bulletin lists 24 reference entries. Some entries permit alternative editions, so a claim that only IBC 2024 or only ACI 318-19 is accepted is too narrow. Check the live bulletin immediately before purchasing because the list can change.

1. Mechanical and Electrical Systems for Construction Managers, 4th edition, 2024.
2. ICC A117.1-2017, Accessible and Usable Buildings and Facilities.
3. BCSI, 2018 edition updated March 2020, or the 2025 edition.
4. Carpentry and Building Construction, 2016 edition.
5. 29 CFR Part 1926, 1926-2023 with current amendments, or PSI OSHA Excerpts 2025.
6. Construction Jobsite Management, 4th edition from 2017 or 5th edition from 2024.
7. Construction Project Management, 4th edition from 2014 or 5th edition from 2022.
8. NASCLA Contractors Guide to Business, Law and Project Management, Basic 14th edition.
9. Erectors' Manual for precast concrete products, 2nd edition, 1999.
10. Green Building Fundamentals, 2nd edition, 2011.
11. Gypsum Construction Handbook, 7th edition, 2014.
12. Technical Digest No. 9, Handling and Erection of Steel Joists and Joist Girders, 3rd edition, 2008.
13. International Building Code, 2021 or 2024.
14. ACI 318-14 or ACI 318-19 (2022), Building Code Requirements for Structural Concrete and Commentary.
15. Training and Certification of Field Personnel for Unbonded Post-Tensioning, Level 1 Field Fundamentals, 3rd edition, 2003.
16. Modern Masonry: Brick, Block, Stone, 9th edition, 2020.
17. Pipe and Excavation Contracting, 2011.
18. Principles and Practices of Commercial Construction, 11th edition, 2024.
19. Roofing Construction and Estimating, 1995, reprinted in 2022.
20. Placing Reinforcing Bars, Recommended Practices, 10th edition, 2019 or a later printing.
21. SDI Manual of Construction with Steel Deck, 2016.
22. The Contractor's Guide to Quality Concrete Construction, 4th edition, 2018.
23. Developing Your Stormwater Pollution Prevention Plan: A Guide for Construction Sites, EPA, 2007.
24. ANSI/EIMA 99-A-2017 for EIFS and EIFS with Drainage.

PSI supplies the physical diagram or blueprint packet onsite. It does not supply the 24 listed references. For code questions, the exam uses only the listed code editions. For non-code references, PSI permits earlier or later editions but warns candidates that they use them at their own risk and cannot appeal an answer conflict caused by a different edition.

Open-Book Rules: Mark Less Than Old Guides Suggest

The current bulletin permits references to be highlighted, underlined, and indexed. Permanent tabs are allowed. Temporary tabs such as Post-It notes are prohibited. References must otherwise be unmarked, meaning candidates should not add handwritten study notes. Loose or attached extra papers are also prohibited.

That rule makes a separate laminated master-index card unsafe advice: it is an additional paper, not an approved reference. Build navigation into the books with compliant permanent tabs and highlighting. Before exam day, inspect every volume for sticky notes, loose pages, inserted summaries, or handwriting beyond permitted highlighting and underlining.

Open book also does not mean every answer must be looked up. Use practice to decide whether you know the answer, know the reference location, or need to flag and return. The exam's best navigation system is one you have rehearsed under the actual 125-item pacing calculation.

A 12-Week NASCLA Study System

NASCLA does not prescribe a study duration or number of practice exams. This 12-week schedule is an editorial framework; shorten or extend it according to your construction background, reference familiarity, and timed diagnostic results.

Week 1: Confirm the License Path and Current Bulletin

NASCLA practicePractice questions with detailed explanations

Week 2: Build a Compliant Reference System

Match every physical reference to the current bulletin, including allowed alternative editions. Add permanent tabs and highlighting only. Remove handwritten notes, loose materials, and temporary tabs. Practice opening directly to major tables, definitions, and indexes without using an external sheet.

Week 3: Procurement and Contracting Requirements

Give the 31-item largest area the largest initial block. Map practice questions to the reference that resolves them and record lookup time. Because the bulletin publishes no task-level weights, do not assume one contract topic will dominate.

Week 4: General Requirements

Work through the 25-item area with the same source-first method. Separate knowledge misses from navigation misses. Together, Weeks 3 and 4 address 56 of 115 scored items, but retain cumulative review of earlier work.

Week 5: Site Construction

Study the 15-item area and practice interpreting the onsite-style diagram or blueprint information using legally obtained sample plans. Connect each practice answer to an approved reference or clearly identified general industry principle.

Week 6: Concrete, Masonry, Metals, and Wood

These four areas total 21 scored items. Drill reference boundaries so you can decide whether a question belongs in a concrete code, reinforcing guide, masonry text, steel publication, carpentry text, or truss guide before searching.

Week 7: Envelope and Finish Areas

Thermal and Moisture Protection, Doors/Windows/Glazing, and Finishes total 14 scored items. Practice choosing the relevant approved source before reading every index.

Week 8: Mechanical, Plumbing, and Electrical

Mechanical and Plumbing has six items and Electrical has three. Give them nine items' worth of baseline time, then increase it only if the diagnostic shows a larger personal gap.

Week 9: Cross-Reference Navigation

Mix all 12 areas. Track first-choice reference, lookup time, whether the found passage answers the exact stem, and why each distractor fails. Revise permanent tabs only when the change makes a real lookup faster.

Week 10: Full 125-Item Rehearsal

Use a sufficiently varied, original practice set with 125 displayed items and a 330-minute clock. A 115-item simulation does not reproduce the real displayed workload. Review both misses and guesses afterward.

Week 11: Repair the Error Log

Group errors into concept, wrong-reference, slow-lookup, calculation setup, or reading mistakes. Direct the next drill to the cause instead of rereading every book. Recheck editions and current agency requirements before scheduling.

Week 12: Final Simulation and Logistics

Complete a final mixed rehearsal early in the week, then taper. Confirm NASCLA approval, PSI appointment, identification, reference compliance, route, and cancellation deadline. Stop changing tabs at the last minute unless a measured lookup problem remains.

PSI Test-Day and Scheduling Rules

The current bulletin tells candidates to arrive 30 minutes before the appointment, not 45. Bring one current government-issued identification bearing name, signature, and photograph. The name must support admission under PSI's current rules.

Only a silent, battery-operated, nonprinting, nonprogrammable calculator without an alphabetic keyboard is allowed. Personal writing devices, food, drinks, electronic devices, and unapproved materials stay outside the examination room or in secure storage. Restroom departure requires permission and does not stop the clock.

A candidate can cancel or reschedule without forfeiting the fee when PSI receives notice at least two days before the appointment. Voicemail or email is not acceptable; use the PSI website or speak directly with customer service. Late arrival, missing identification, absence, or late cancellation forfeits the exam fee.

After Passing: Results and Transcripts

PSI provides a pass report at the test center. NASCLA says a passing report does not include a numerical score or a content breakdown. Allow the result to upload and the NED account to link before purchasing transcripts.

NASCLA's FAQ makes an important distinction: the exam result itself does not expire. Each $45 electronic transcript remains viewable by its receiving regulatory agency for two years after purchase. Candidates do not receive a copy of the electronic transcript; the PSI score report is their paper proof.

Send a separate transcript to each desired agency, then complete that agency's license process. Do not advertise yourself as licensed merely because NASCLA shows a passing result.

Final Readiness Checklist

Before scheduling, confirm the live agency acceptance page, exact classification, separate license requirements, approval date, and fee. Before testing, confirm all 24 reference entries against the current PSI bulletin, permitted editions, permanent tabs, lack of inserted material, accepted calculator, identification, and 30-minute arrival target.

NASCLA practice questionsPractice questions with detailed explanations

Official NASCLA Sources

Use the NASCLA Commercial Exam page for the current program identity; the PSI Candidate Information Bulletin updated July 7, 2026 for format, scoring, fees, outline, references, and test-center rules; the participating-agency page for the live acceptance list; the application page for approval and transcript workflow; and the official FAQ for eligibility, attempts, fees, transcript cost, and result validity.