- Exam Overview and Domain Weighting
- Domain 1: Oregon Const. Contractor Laws and Regulations
- Domains 2-4: Business Structure, Employees, Subcontractors
- Domains 5-6: Contracts and Oregon Lien Law
- Domains 7-8: Bidding, Estimating, and Scheduling
- Domains 9-11: Codes, Safety, and Environmental Factors
- Domains 12-14: Building Shell, Finance, and Tax Basics
- Full Domain Weighting Table
- Mapping a Study Plan to the 14 Domains
- Frequently Asked Questions
- The OR-CCB exam has 80 scored items across 14 domains, plus 8 unscored pretest items.
- Domain 1 (Oregon Laws and Regulations) carries 18 items - the single heaviest domain by far.
- Contracts (9 items) and Hiring and Managing Employees (7 items) are the next-largest domains.
- You need 56 of 80 scored answers correct (70%) to pass, per the NASCLA-based Oregon manual.
Exam Overview and Domain Weighting
The Oregon CCB Contractor License Exam, administered through PSI under the Oregon Construction Contractors Board, is built from 14 distinct content areas. Each candidate answers 80 scored, multiple-choice items pulled from these domains within a 180-minute window, plus 8 additional non-scored experimental items that add 20 more minutes to the session - 88 total items over 200 minutes. Understanding exactly how those 80 scored items are distributed across the 14 domains is the single most useful thing you can do before you start studying, because it tells you where your prep time actually pays off.
This breakdown matters more for the OR-CCB exam than for many other licensing tests because the domain weights are extremely uneven. One domain alone accounts for more than a fifth of your scored questions, while several others contribute only two to four items each. If you want the full mechanics of registration, fees, and scheduling logistics, see our OR-CCB Exam Dates guide; if you want a step-by-step prep roadmap, our OR-CCB Study Guide walks through that in detail. This article focuses specifically on what each domain covers and how much weight it carries.
Domain 1: Oregon Const. Contractor Laws and Regulations (18 Items)
This is the dominant domain on the entire exam - 18 of the 80 scored items, more than double the next-largest domain. If you master nothing else, master this section, because it alone can decide whether you clear the 56-correct passing threshold.
Domain 1: Oregon Const. Contractor Laws and Regulations
Candidates must understand CCB licensing requirements, the Responsible Managing Individual (RMI) role, bonding and insurance obligations, license renewal rules, and disciplinary provisions.
- Who qualifies as an RMI - must be 18 or older, and an owner, officer, partner, or an employee with management or supervisory authority over construction activity
- The 16-hour pre-license training requirement, and the NASCLA commercial general building exam exemption from that course
- License application timing - filing within two years after passing, along with bond, liability insurance evidence, and the $400 two-year license fee
- Continuing education structure for residential and commercial licensees
Because this domain overlaps so heavily with the eligibility rules that get you into the testing room in the first place, it pairs naturally with our OR-CCB Requirements guide. If you're unclear on how registration, RMI status, or renewal timelines work, reviewing that article alongside Domain 1 content will reinforce both at once.
Domains 2-4: Business Structure, Employees, and Subcontractors
These three domains together account for 13 scored items and cover the operational backbone of running a contracting business in Oregon.
Domain 2: Choosing Your Business Structure (4 items)
Expect questions on the practical and legal differences between sole proprietorships, partnerships, LLCs, and corporations as they apply to a construction business, including how structure choice affects liability and licensing.
Domain 3: Hiring and Managing Employees (7 items)
This is the second-heaviest of these three domains. Topics include classifying workers correctly, employer obligations, supervision requirements, and management responsibilities tied back to the RMI role from Domain 1.
Domain 4: Working with Subcontractors (2 items)
Only two items, but don't skip it - expect at least one question on subcontractor agreements, licensing verification, and liability allocation between a general contractor and subs.
Domains 5-6: Contracts and Oregon Lien Law
Contracts is the second-largest domain on the whole exam at 9 items, and Oregon Lien Law adds another 5 - together, 14 items, nearly as many as Domain 1 alone.
Domain 5: Contracts (9 items)
Candidates need working knowledge of required contract elements, change orders, disclosure requirements, and dispute-related clauses that are standard in Oregon residential and commercial construction agreements.
- Required written contract provisions for Oregon contractors
- Change order documentation and approval processes
- Consumer protection and disclosure obligations
Domain 6: Oregon Lien Law (5 items)
Mechanic's lien filing deadlines, notice requirements, and lien rights for contractors, subcontractors, and material suppliers are the core focus. This is one of the more Oregon-specific legal areas on the exam, distinct from generic contract law.
Key Takeaway
Contracts and Lien Law combined outweigh five of the smaller domains put together - budget real study time here, not just a quick read-through.
Domains 7-8: Bidding, Estimating, and Scheduling
Together these domains represent 11 scored items and test your ability to apply construction business math and project planning logic rather than pure memorization.
Domain 7: Bidding and Estimating (6 items)
Expect scenario-based questions on cost estimation methods, markup and overhead calculations, and how to structure a competitive but profitable bid.
Domain 8: Scheduling and Project Management (5 items)
This covers sequencing construction tasks, managing timelines, and coordinating trades - practical project management skills an RMI is expected to apply day to day.
These two domains are where the open-book format genuinely helps, since the NASCLA manual includes reference material for calculations. PSI supplies an on-screen calculator for the exam - personal calculators are not permitted - so practice using an on-screen tool rather than your own before test day.
Domains 9-11: Codes, Safety, and Environmental Factors
These three domains each carry 4 items apiece, for 12 items total. They're smaller individually but collectively significant.
Domain 9: Oregon Building Codes (4 items)
General familiarity with how Oregon's building code framework applies to contractor responsibilities - not deep code-book memorization, but recognition of key compliance concepts.
Domain 10: Jobsite Safety (4 items)
Core safety obligations a contractor and RMI must uphold on an active jobsite, including hazard awareness and worker protection basics.
Domain 11: Environmental Factors (4 items)
Expect questions on environmental compliance issues relevant to construction sites, such as handling regulated materials and site conditions.
Domains 12-14: Building Exterior Shell, Financial Management, and Tax Basics
The final three domains close out the exam with 4 items each, for 12 items total - proof that even the "smaller" domains add up to a meaningful share of your score.
Domain 12: Building Exterior Shell (4 items)
Technical knowledge of exterior building components - roofing, siding, moisture barriers, and related weatherproofing concerns that a contractor needs to manage or oversee.
Domain 13: Financial Management (4 items)
Business financial fundamentals: cash flow, job costing, and financial recordkeeping practices relevant to running a contracting company.
Domain 14: Tax Basics (4 items)
General tax obligations a contracting business owner should understand, including recordkeeping tied to business operations.
Together, Domains 9 through 14 make up 24 of your 80 scored items - nearly a third of the exam - even though no single one of them looks intimidating on its own. Underestimating this cluster is a common reason candidates come up short of the 56-correct threshold; our OR-CCB Passing Score breakdown explains exactly how that threshold is calculated.
Full Domain Weighting Table
| Domain | Scored Items |
|---|---|
| 1. Oregon Const. Contractor Laws and Regulations | 18 |
| 5. Contracts | 9 |
| 3. Hiring and Managing Employees | 7 |
| 7. Bidding and Estimating | 6 |
| 6. Oregon Lien Law | 5 |
| 8. Scheduling and Project Management | 5 |
| 2. Choosing Your Business Structure | 4 |
| 9. Oregon Building Codes | 4 |
| 10. Jobsite Safety | 4 |
| 11. Environmental Factors | 4 |
| 12. Building Exterior Shell | 4 |
| 13. Financial Management | 4 |
| 14. Tax Basics | 4 |
| 4. Working with Subcontractors | 2 |
| Total Scored Items | 80 |
Mapping a Study Plan to the 14 Domains
Rather than studying all 14 domains equally, allocate time proportional to item count. A simple four-week structure built around the weighting table looks like this:
Domain 1 Deep Dive
- Work through Oregon licensing law, RMI requirements, and CCB regulations line by line in the manual
- Tab every section on bonding, insurance, and license renewal for quick open-book reference
Contracts, Lien Law, and Employees
- Study Domains 5, 6, and 3 together since they cover the operational and legal side of running jobs
- Practice change-order and lien-deadline scenarios rather than pure definitions
Bidding, Scheduling, and the Smaller Cluster
- Cover Domains 7 and 8 with the on-screen calculator practice in mind
- Move through Domains 9-14 as a batch - each is small, but together they total 24 items
Full-Length Review
- Run timed practice covering all 14 domains in proportion to their weight
- Retest weak domains identified from missed practice questions
For a condensed, one-page version of the highest-yield facts across all 14 domains, our OR-CCB Cheat Sheet is built to complement this timeline. And if you're still deciding how much total prep time to commit, How Hard Is the OR-CCB Exam? breaks down the difficulty picture domain by domain.
It's worth remembering that the domain list itself reflects what the job actually demands. Employers hiring licensed contractors and RMIs care about the same competencies PSI tests: legal compliance, contract handling, bidding accuracy, and jobsite oversight. If you're weighing whether this credential leads somewhere, our OR-CCB Jobs overview and ROI analysis connect the domain content back to real career outcomes, while OR-CCB Certification Cost breakdown covers what you'll spend beyond the exam fee itself - bonding, insurance, and the $400 licensing fee.
Frequently Asked Questions
There are 14 content domains, covering everything from Oregon-specific laws and lien rules to bidding, safety, and tax basics, spread across 80 scored items.
Domain 1, Oregon Const. Contractor Laws and Regulations, carries 18 scored items - more than double any other domain.
No. Only 80 items are scored across the 14 domains. The remaining 8 are non-scored experimental items included within the total 200-minute session.
You may bring the NASCLA manual with handwritten notes, highlighting, underlining, and tabs added before the exam, but you cannot write in it during testing or bring separate loose papers.
Yes. Domains with 2-4 items still add up - the six smallest domains together total 26 items, close to a third of the entire scored exam.