CSLB B License General Contractor Exam 2026/2027 - Questions and Answers With Rationales

CSLB B License General Contractor Exam
2026/2027 - Questions and Answers With
Rationales
TABLE OF CONTENTS

1. Class B License & Scope of Work

2. Licensing, Qualifying Individual & Experience

3. Construction Planning & Project Management

4. Building Codes, Drawings & Specifications

5. Estimating, Bidding & Cost Control

6. Contracts, Changes & Documentation

7. Construction Methods & Building Systems

8. Safety & Jobsite Management

9. Subcontractors, Employees & Business Practices

10.California Contractor Law & Final Review

SECTION 1 — CLASS B LICENSE & SCOPE OF WORK

Question 1

What does the CSLB Class B classification generally represent?

A. General Engineering Contractor
B. General Building Contractor
C. Electrical Contractor
D. Plumbing Contractor
Answer: B. General Building Contractor

Rationale: Class B is the General Building Contractor classification. Its principal
contracting business concerns structures requiring at least two unrelated
building trades or crafts, subject to statutory exceptions. (CSLB)

,Question 2

Which organization administers California contractor licensing?

A. OSHA
B. CSLB
C. EDD
D. DIR
Answer: B. CSLB

Rationale: The California Contractors State License Board (CSLB) administers
contractor licensing in California. CSLB also administers examinations and
maintains contractor license records. (CSLB)


Question 3

A Class B contractor's principal business generally involves:

A. Only electrical systems
B. Only plumbing systems
C. Structures requiring at least two unrelated building trades
D. Only road construction
Answer: C. Structures requiring at least two unrelated building trades

Rationale: Business and Professions Code §7057 defines the general building
classification around structures requiring at least two unrelated building
trades or crafts. (CSLB)


Question 4

Which classification is specifically associated with general building?

A. A
B. B
C. C-10
D. C-36

,Answer: B. B

Rationale: Class B is the General Building classification.



Question 5

A B contractor performs a framing-only project. Is framing generally within the
B classification?
A. No
B. Yes
C. Only if the project is public
D. Only if the project is commercial
Answer: B. Yes

Rationale: CSLB explains that a B contractor may take a prime contract or
subcontract for a framing or carpentry project. (CSLB)


Question 6

Which statement about framing and carpentry is correct for a B contractor?

A. They can never be performed under a B license
B. They may be performed without the two-trade requirement
C. They require a C-10 license
D. They require an A license
Answer: B. They may be performed without the two-trade requirement

Rationale: Section 7057 specifically provides an exception for framing and
carpentry projects. (CSLB)


Question 7

A B contractor wants to perform electrical work that is outside the permitted B
scope. What is generally required?
A. Nothing
B. A plumbing permit

, C. Appropriate electrical classification or an appropriately licensed specialty
contractor
D. Only a business license
Answer: C. Appropriate electrical classification or an appropriately licensed
specialty contractor
Rationale: When a project involves work requiring another specialty
classification, the B contractor must meet the applicable licensing
requirements, including holding the appropriate classification or
subcontracting to an appropriately licensed specialty contractor where
permitted. (CSLB)


Question 8

Which classification is associated with electrical contracting?

A. C-10
B. C-20
C. C-27
D. C-36
Answer: A. C-10

Rationale: C-10 is the Electrical Contractor classification.



Question 9

Which classification is associated with plumbing?

A. C-20
B. C-36
C. C-39
D. C-46
Answer: B. C-36

Rationale: C-36 is the Plumbing Contractor classification.