CALIFORNIA CONSTRUCTION CLEAN-UP CONTRACTOR
LICENSE EXAM (C-61/D-63) ACTUAL PREP QUESTIONS
AND VERIFIED ANSWERS LATEST UPDATE 2026/2027
DETAILED SOLUTIONS (GUARANTEED PASS)
Overview
This premium high-density exam bank delivers highly predictive practice
questions engineered for the California CSLB C-61 / D-63 Construction
Clean-up Contractor License examination. Each item features a verified
correct answer paired with a rigorous legal or trade explanation mapping
to California CSLB Law, Business, and Cal/OSHA requirements. It
optimizes student retention, contract understanding, and first-time exam
clearance.
Question 1
According to the California Contractors State License Board (CSLB)
regulations, a C-61 / D-63 Construction Clean-up contractor can perform
work on a project without a written contract only if the total aggregate
price for labor and materials is less than:
A. $100
B. $500
,C. $1,000
D. $2,500
VERIFIED ANSWER: B. $500
EXPLANATION: In California, any home improvement or construction
project where the combined cost of labor and materials is $500 or
more must be executed under a legally binding, written contract.
Splitting a single project into smaller invoices under $500 to evade
this law is strictly illegal. [1, 2]
Question 2
When compiling a bid for a post-construction window cleaning project on
a three-story commercial complex, a D-63 contractor must factor in
specialized safety compliance. According to Cal/OSHA standards,
personal fall arrest systems (PFAS) are generally mandatory for workers
exposed to falls from an unprotected edge of how many feet or more?
A. 4 feet
B. 6 feet
C. 10 feet
D. 15 feet
VERIFIED ANSWER: B. 6 feet
EXPLANATION: Cal/OSHA General Industry and Construction Safety
Orders dictate that fall protection (such as guardrails, safety nets,
or personal fall arrest systems) must be implemented when
employees are exposed to fall hazards of 6 feet or greater from
unprotected edges or surfaces.
,Question 3
A C-61 / D-63 contractor accidentally pressure washes a newly sealed
decorative concrete driveway using an improper high-pressure nozzle
settings, stripping away the sealant and etching the surface. Which type
of insurance coverage is specifically designed to protect the contractor
against third-party property damage resulting from operations?
A. Workers' Compensation Insurance
B. Commercial General Liability (CGL) Insurance
C. Professional Liability Insurance
D. Surety Performance Bond
VERIFIED ANSWER: B. Commercial General Liability (CGL) Insurance
EXPLANATION: Commercial General Liability (CGL) insurance covers
a contracting business against financial loss resulting from third-
party bodily injury or property damage caused by the contractor's
operations, work performance, or employees while on a job site.
Question 4
A construction clean-up contractor hires two temporary workers to
assist with final debris removal on a commercial site for three days.
Under California labor law, what insurance must the contractor carry for
these workers, regardless of their temporary employment status?
A. Inland Marine Insurance
B. Commercial Auto Insurance
C. Workers' Compensation Insurance
D. Errors and Omissions Insurance
, VERIFIED ANSWER: C. Workers' Compensation Insurance
EXPLANATION: California Labor Law mandates that all employers—
including construction contractors—must carry Workers'
Compensation Insurance for all employees, even if they are
temporary, part-time, or seasonal. There are no exemptions based
on the brevity of the employment duration.
Question 5
During a final post-construction clean-up, a D-63 contractor discovers
several unlabeled, corroding drums containing dark liquid left behind by
an unknown subcontractor. What is the legally and environmentally
responsible initial action the contractor must take?
A. Roll the drums to the nearest dumpster to clear the site on schedule.
B. Dilute the liquid with water and sweep it down the municipal storm
drain.
C. Notify the prime contractor or property owner immediately so certified
hazardous materials experts can assess and manifest the waste.
D. Mix the liquid with an absorbent chemical compound and throw it away
as standard construction debris.
VERIFIED ANSWER: C. Notify the prime contractor or property owner
immediately so certified hazardous materials experts can assess
and manifest the waste.
EXPLANATION: Construction clean-up contractors are not licensed
hazardous waste abatement professionals. If suspected toxic or
unidentified hazardous waste is discovered, the contractor must
LICENSE EXAM (C-61/D-63) ACTUAL PREP QUESTIONS
AND VERIFIED ANSWERS LATEST UPDATE 2026/2027
DETAILED SOLUTIONS (GUARANTEED PASS)
Overview
This premium high-density exam bank delivers highly predictive practice
questions engineered for the California CSLB C-61 / D-63 Construction
Clean-up Contractor License examination. Each item features a verified
correct answer paired with a rigorous legal or trade explanation mapping
to California CSLB Law, Business, and Cal/OSHA requirements. It
optimizes student retention, contract understanding, and first-time exam
clearance.
Question 1
According to the California Contractors State License Board (CSLB)
regulations, a C-61 / D-63 Construction Clean-up contractor can perform
work on a project without a written contract only if the total aggregate
price for labor and materials is less than:
A. $100
B. $500
,C. $1,000
D. $2,500
VERIFIED ANSWER: B. $500
EXPLANATION: In California, any home improvement or construction
project where the combined cost of labor and materials is $500 or
more must be executed under a legally binding, written contract.
Splitting a single project into smaller invoices under $500 to evade
this law is strictly illegal. [1, 2]
Question 2
When compiling a bid for a post-construction window cleaning project on
a three-story commercial complex, a D-63 contractor must factor in
specialized safety compliance. According to Cal/OSHA standards,
personal fall arrest systems (PFAS) are generally mandatory for workers
exposed to falls from an unprotected edge of how many feet or more?
A. 4 feet
B. 6 feet
C. 10 feet
D. 15 feet
VERIFIED ANSWER: B. 6 feet
EXPLANATION: Cal/OSHA General Industry and Construction Safety
Orders dictate that fall protection (such as guardrails, safety nets,
or personal fall arrest systems) must be implemented when
employees are exposed to fall hazards of 6 feet or greater from
unprotected edges or surfaces.
,Question 3
A C-61 / D-63 contractor accidentally pressure washes a newly sealed
decorative concrete driveway using an improper high-pressure nozzle
settings, stripping away the sealant and etching the surface. Which type
of insurance coverage is specifically designed to protect the contractor
against third-party property damage resulting from operations?
A. Workers' Compensation Insurance
B. Commercial General Liability (CGL) Insurance
C. Professional Liability Insurance
D. Surety Performance Bond
VERIFIED ANSWER: B. Commercial General Liability (CGL) Insurance
EXPLANATION: Commercial General Liability (CGL) insurance covers
a contracting business against financial loss resulting from third-
party bodily injury or property damage caused by the contractor's
operations, work performance, or employees while on a job site.
Question 4
A construction clean-up contractor hires two temporary workers to
assist with final debris removal on a commercial site for three days.
Under California labor law, what insurance must the contractor carry for
these workers, regardless of their temporary employment status?
A. Inland Marine Insurance
B. Commercial Auto Insurance
C. Workers' Compensation Insurance
D. Errors and Omissions Insurance
, VERIFIED ANSWER: C. Workers' Compensation Insurance
EXPLANATION: California Labor Law mandates that all employers—
including construction contractors—must carry Workers'
Compensation Insurance for all employees, even if they are
temporary, part-time, or seasonal. There are no exemptions based
on the brevity of the employment duration.
Question 5
During a final post-construction clean-up, a D-63 contractor discovers
several unlabeled, corroding drums containing dark liquid left behind by
an unknown subcontractor. What is the legally and environmentally
responsible initial action the contractor must take?
A. Roll the drums to the nearest dumpster to clear the site on schedule.
B. Dilute the liquid with water and sweep it down the municipal storm
drain.
C. Notify the prime contractor or property owner immediately so certified
hazardous materials experts can assess and manifest the waste.
D. Mix the liquid with an absorbent chemical compound and throw it away
as standard construction debris.
VERIFIED ANSWER: C. Notify the prime contractor or property owner
immediately so certified hazardous materials experts can assess
and manifest the waste.
EXPLANATION: Construction clean-up contractors are not licensed
hazardous waste abatement professionals. If suspected toxic or
unidentified hazardous waste is discovered, the contractor must
