NASCLA study guide: an eight-week plan by area

The NASCLA Commercial General Building exam rewards people who know commercial construction and can find an answer in the right book quickly. This plan ties the published question counts to your calendar, so your hours follow the points. Test yourself as you go with the NASCLA practice test.

Start with the outline, the books and the clock

PSI's Candidate Information Bulletin (updated 7 Jul 2026) gives twelve subject areas over 115 scored questions, plus 10 unscored pretest questions, in 330 minutes. That is about two and a half minutes per question, including lookup time. The exam is open book with 24 listed references you bring yourself, so getting and tabbing them is part of studying. See the reference books guide. Before you set an exam date, check which states accept the NASCLA exam and what else your state asks for.

An eight-week plan

Plan about 8 to 10 hours a week. Move weeks around to match your gaps.

The shares come from the question counts in the exam outline. Procurement and Contracting gets two weeks because it is the single largest area. If business, contracts and estimating are already your daily work, move one of those weeks to whichever area your baseline shows is weakest.

How to study each subject area

The bulletin lists area names only, with no topic list under them. So for each area:

1. Pick its books. Use the outline guide to see which listed titles line up with it.
2. Read the table of contents and index first. You are building a map of where things are, not memorizing every page.
3. Tab as you go. Add permanent tabs where you expect to look things up. Post-it notes are not allowed in the exam and must come out first.
4. Drill lookups. For each question you practice, time how long it takes to find the answer in your book. If it takes more than a couple of minutes, add a tab or note the index term you should have used.
5. Work the numbers. Estimating, quantities, scheduling and payroll arithmetic do not need a book at all once you know the method. Practice them with a calculator like the one you will use: silent, nonprinting and non-programmable.

Practice that finds gaps

• After each week, answer 25 questions on that week's areas and write down why you missed each one: didn't know it, couldn't find it, or misread it.
• In week 8, sit a long timed set in your tabbed books at about two and a half minutes per question.
• Compare each area's score with its share of the exam and spend the last days on the heaviest area where you lost the most.

A practice score does not predict your exam result. Use it to choose what to study next.

Take the free 10-question check and see your score by subject area in minutes. It needs no signup and explains every answer.

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.

FAQ

What should I study first for the NASCLA exam?

The two business areas: Procurement and Contracting Requirements (31 questions) and General Requirements (25). Together they are almost half the scored exam.

Is there a free NASCLA study plan?

Yes. The free study plan builder spreads the 12 subject areas over the weeks to your exam date, weighted by question count.

How do I study for an open-book exam?

Learn what each of the 24 references covers, tab the topics you look up most, and practice finding answers in your own books on the clock.

Sources

Show the list

• PSI Candidate Information Bulletin 1458, content outline, reference list and exam rules, updated 7 Jul 2026. Retrieved 5 Nov 2026.
• NASCLA Commercial Exam, NASCLA. Retrieved 5 Nov 2026.