CSLB CONTRACTOR B EXAM | VERIFIED QUESTIONS AND
ANSWERS | GRADED A+ | GUARANTEED PASS | LATEST UPDATE 2026
1. The primary responsibility of a B General Building contractor is to:
A. Perform only electrical work
B. Construct or supervise structures requiring two or more unrelated building trades
C. Perform landscaping services only
D. Install HVAC systems only
Answer: B. A B General Building contractor is responsible for projects requiring two or more
unrelated trades (e.g., carpentry, plumbing, electrical), either performing or supervising the
work.
2. Before bidding on a public works project, a contractor must:
A. Obtain homeowner approval
B. Be registered with the DIR (Department of Industrial Relations)
C. Submit tax returns
D. Obtain city council approval
Answer: B. Contractors must register with the California Department of Industrial Relations
before bidding or working on public works projects.
3. The statute of limitations for patent (obvious) defects in construction is generally:
A. 10 years
B. 4 years
C. 2 years
D. 1 year
Answer: B. Patent defects typically carry a 4-year statute of limitations under California law.
4. A contractor must carry workers’ compensation insurance when:
A. They have no employees
B. They hire independent contractors
C. They have one or more employees
D. They earn over $100,000
, Answer: C. California law requires workers’ compensation insurance for contractors with one or
more employees.
5. The purpose of a performance bond is to:
A. Guarantee payment to suppliers
B. Protect the owner if the contractor fails to complete the project
C. Insure equipment
D. Cover employee injuries
Answer: B. A performance bond protects the project owner if the contractor fails to complete the
work as agreed.
6. The minimum rebar cover for concrete cast against earth is generally:
A. 1 inch
B. 1½ inches
C. 2 inches
D. 3 inches
Answer: D. Concrete cast against and permanently exposed to earth typically requires 3 inches
of rebar cover.
7. A mechanic’s lien must generally be filed within how many days after completion?
A. 30 days
B. 60 days
C. 90 days
D. 120 days
Answer: C. A contractor usually has 90 days after completion to file a mechanic’s lien if no
Notice of Completion is recorded.
8. The minimum slope for drainage away from a foundation is:
A. 1 inch per foot
B. 6 inches in the first 10 feet
C. 2 inches in 20 feet
D. ½ inch per foot
ANSWERS | GRADED A+ | GUARANTEED PASS | LATEST UPDATE 2026
1. The primary responsibility of a B General Building contractor is to:
A. Perform only electrical work
B. Construct or supervise structures requiring two or more unrelated building trades
C. Perform landscaping services only
D. Install HVAC systems only
Answer: B. A B General Building contractor is responsible for projects requiring two or more
unrelated trades (e.g., carpentry, plumbing, electrical), either performing or supervising the
work.
2. Before bidding on a public works project, a contractor must:
A. Obtain homeowner approval
B. Be registered with the DIR (Department of Industrial Relations)
C. Submit tax returns
D. Obtain city council approval
Answer: B. Contractors must register with the California Department of Industrial Relations
before bidding or working on public works projects.
3. The statute of limitations for patent (obvious) defects in construction is generally:
A. 10 years
B. 4 years
C. 2 years
D. 1 year
Answer: B. Patent defects typically carry a 4-year statute of limitations under California law.
4. A contractor must carry workers’ compensation insurance when:
A. They have no employees
B. They hire independent contractors
C. They have one or more employees
D. They earn over $100,000
, Answer: C. California law requires workers’ compensation insurance for contractors with one or
more employees.
5. The purpose of a performance bond is to:
A. Guarantee payment to suppliers
B. Protect the owner if the contractor fails to complete the project
C. Insure equipment
D. Cover employee injuries
Answer: B. A performance bond protects the project owner if the contractor fails to complete the
work as agreed.
6. The minimum rebar cover for concrete cast against earth is generally:
A. 1 inch
B. 1½ inches
C. 2 inches
D. 3 inches
Answer: D. Concrete cast against and permanently exposed to earth typically requires 3 inches
of rebar cover.
7. A mechanic’s lien must generally be filed within how many days after completion?
A. 30 days
B. 60 days
C. 90 days
D. 120 days
Answer: C. A contractor usually has 90 days after completion to file a mechanic’s lien if no
Notice of Completion is recorded.
8. The minimum slope for drainage away from a foundation is:
A. 1 inch per foot
B. 6 inches in the first 10 feet
C. 2 inches in 20 feet
D. ½ inch per foot
