For contractors preparing for the NASCLA Commercial General Building exam
Know where to look before the clock starts.
NASCLA Commercial General Building practice questions written to the published content outline. Every answer is explained and your weakest subject area is named.
Full course from $199, with lessons, timed practice exams and a study plan. See the courses →
The exam
Original practice questions written to NASCLA's published outline. Every answer comes with a full explanation.
Each check is weighted to that exam's published content outline, so your score breakdown matches what you will be tested on. The card has the full course and price: lessons, timed exams and a study plan, with Seal, your AI study assistant, built in.
NASCLA Commercial General Building
The full course$199
Learn all 12 subject areas and where to look in your books, then prove it on timed practice exams.
12 modules of lessons4 full-length timed exams472 practice questions
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Procurement and Contracting Requirements
A subcontractor on a bonded public project has not been paid for completed work. Which bond is meant to protect it?
Press A-D or 1-4 to choose an answer while this question is on screen.
Choose an answer to begin
Every course includes
Seal, your AI study assistant, comes with the NASCLA Commercial course: a week-by-week plan from your exam date and weak areas, step-by-step walk-throughs and a weak-spot quiz. Up to 40 messages a day.
The Bid Bond app
The Bid Bond app for iPhone and Android is built around your study buddy, with quick practice questions and your study plan. Bid Bond already works in your phone's browser today.
Seal AI, your Bid Bond study buddy, is at the center of the app.
The NASCLA Accredited Examination for Commercial General Building Contractors is a trade exam that participating state agencies accept in place of their own trade exam for a commercial or general building license. NASCLA owns the exam and PSI delivers it. Passing it does not license you anywhere by itself: each state still sets its own application, business and law exam, and other requirements. Bid Bond gets you ready by showing, question by question, which subject areas you can already handle and which ones still cost you points.
PSI's Candidate Information Bulletin (updated 7 Jul 2026) lists twelve subject areas. Procurement and Contracting Requirements is the largest at 31 of the 115 scored questions, and General Requirements is next at 25. Together they are almost half the exam. The other ten areas run from Site Construction (15) down to Electrical Systems (3). Read the NASCLA exam outline guide.
Take the free 10-question check and see your score by subject area in minutes.
When you know where you stand, the course takes you through the rest. The NASCLA Commercial course has a lesson for each of the 12 subject areas that shows which listed reference to open and how to apply it, original practice questions with every answer worked, and four timed practice exams of 115 questions on a 330-minute clock. Your scores come back by subject area, so you know where the next study hour goes. See the course.
Not affiliated with or endorsed by NASCLA or PSI. NASCLA and PSI are named only to identify the exam and its test vendor.
Guides and tools
What is on the exam, who can sit it, what it costs and how to keep it.
Work through one topic at a time, with the method and worked examples.
Check yourself on questions, symbols and code look-ups, then see what to fix.
Run the math your exam asks for and get the answer in seconds.
Updated 6 November 2026.