United States
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Clear lessons follow the published blueprint and keep the source beside the rule.
National Association of State Contractors Licensing Agencies (NASCLA)
NASCLA Commercial GB Full Exam Prep
1,150questions in the bank
5timed mock exams
12 of 12syllabus topics covered
One examination accepted for commercial general building contractor licensure in around twenty states, instead of sitting a separate trade exam in each.
Free account needed. Sign in to open the first topic.
Built around the published syllabus
Every lesson and question maps to the NASCLA Commercial GB syllabus, so your study time follows the topics the examiner says can be tested.
Every answer names its source
Each explanation cites the provision it rests on, so you can go and read the rule rather than take our word for it.
Weighted like the real paper
The number of questions per topic follows the published exam blueprint, not our guess at it.
Exam format
The practical details to plan your sitting and timed practice.
- Questions
- 125
- Time
- 330 minutes
- Pass mark
- 70% i88 correct answers out of 125.
- Format
- Multiple choice · Open book iMultiple choice, OPEN BOOK. Candidates may bring the approved reference list into the testing room. At a PSI test centre
- Languages
- English
The study flow
See what studying with Sitonce looks like
Learn the syllabus, practice each topic, sit a realistic paper and turn every mistake into the next thing to study.
Practice with explanations
Topic questions show why the answer works and why the alternatives fail.
Rehearse the real paper
Full timed papers use a separate question pool and the published format.
Turn mistakes into a plan
Weak topics, flagged questions and worked answers become a focused review list.
What you get
USD 299 for 12 months. Everything needed to learn, practice, simulate the paper and review weak areas.
The syllabus, taught
Every examinable topic, with sources beside the rules that matter.
Questions to drill
Topic practice that follows each lesson and exposes weak areas.
Full mock papers
115 questions in 330 minutes, using a separate question pool.
Worked review notes
The answer, the reasoning, why the alternatives fail, and the source.
Printable documents
The study guide and every mock paper, ready for paper.
A plan built round your date
Your study order and readiness update around the date you plan to sit.
Printable study kit
Keep the full course on paper
6 documents built for printing, annotation and timed practice away from the screen.
Every topic, and how heavily it is examined All 12 covered, with each topic's share of the 125 questions on the real paper
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1
31 q
Procurement and Contracting Requirements
Bidding, bid documents and the award of a contract · Contract types, terms and the order of precedence · Bonds, insurance and indemnification · Changes, claims, delays and contract time · Payment, retainage, lien rights and closeout · Business organisation, licensing and tax obligations · Employment law, payroll and independent contractors · Estimating, cost control and financial management
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2
25 q
General Requirements
OSHA jurisdiction, inspections, citations and recordkeeping · Fall protection and working surfaces · Scaffolds, ladders and aerial lifts · Personal protective equipment and hazard communication · Electrical safety and lockout on the construction site · Cranes, rigging and material handling · Fire prevention, confined spaces and emergency action · Project administration, submittals and temporary facilities
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3
15 q
Site Construction
Excavation, trenching and protective systems · Soils, compaction and site preparation · Stormwater pollution prevention and erosion control · Site utilities, pipe installation and backfill · Surveying, layout and earthwork quantities
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4
6 q
Concrete
Formwork, shoring and reshoring · Reinforcing steel placement, cover and splices · Mixing, placing, finishing and curing · Testing, tolerances and cold and hot weather concreting
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5
6 q
Metals
Structural steel erection and stability · Bolting, welding and connections · Steel joists and steel deck · Cold-formed metal framing
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6
6 q
Mechanical and Plumbing Systems
Plumbing rough-in, fixtures and drainage · HVAC systems, ductwork and ventilation · Fire protection and sprinkler systems · Coordination, testing and commissioning
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7
5 q
Wood
Framing, fastening and structural connections · Engineered wood, trusses and their bracing · Sheathing, diaphragms and shear walls
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8
5 q
Thermal and Moisture Protection
Roofing systems, flashing and drainage · Waterproofing, dampproofing and vapour retarders · Insulation, air barriers and building envelope · Exterior insulation finish systems and joint sealants
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9
5 q
Finishes
Gypsum board assemblies and fire-rated construction · Tile, flooring and acoustical ceilings · Painting, coatings and surface preparation
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10
4 q
Masonry
Mortar, grout and unit types · Laying, bonding, reinforcement and tolerances · Cold and hot weather masonry and protection
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11
4 q
Doors, Windows and Glazing
Door assemblies, hardware and fire-rated openings · Windows, curtain wall and installation · Glazing, safety glazing and accessibility at openings
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12
3 q
Electrical Systems
Temporary power, grounding and site distribution · Service, feeders and coordination with other trades
Try it before you decide
1
Try the first topic
Read up to five subtopics from the real course and answer the questions that follow them. Free account required.
Open the free lesson
2
One full mock, free
115 questions, 330 minutes, scored against the real pass mark.
Sit a free mock
3
Continue through the whole exam
Unlock every lesson, practice question, worked explanation, mock paper and printable document.
Before you buy
Is this everything I need, or do I still need the official material?
Yes. The course is designed to take you from the published syllabus through lessons, practice, worked explanations, timed mock papers and final review without needing another study product. It covers all 12 topics and includes 1,150 questions. Sitonce is independent of the bodies that administer and accredit this exam, so you should still use their official websites for registration rules, appointment details and official updates.
Where do the answers come from?
Every explanation names the provision it rests on and quotes it where quoting is allowed, so you can go and read the rule. Where we have not been able to put the underlying text in front of you, the page says so rather than implying a source it does not have.
How long will I need?
Our estimate for this paper is about 60 hours - 2 hours a day for 4 weeks. That is our estimate, not an official figure. Tell us your exam date when you start and the plan, the reminders and the readiness score are all worked back from it.
Can I see it before I pay?
Yes. With a free account, you can read five subtopics from the first lesson, preview the study guide and try one complete 115-question mock paper. The full course adds every lesson, the complete practice bank, worked explanations, 4 more mock papers and the printable study kit.
What happens if I fail?
Your access runs 12 months, which covers a resit; another sitting may cost USD 130. The final-review screen orders what you got wrong by what each mistake costs on the paper, which is where a second attempt should start.
Can I get a refund?
Full refund within 7 days if no more than 20% of paid lessons and practice are used, no paid study guide is downloaded, and no more than one paid mock is started.
NASCLA Commercial GB · USD 299 for 12 months
The first lesson is free with an account.