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NYC DOB GAS WORK QUALIFICATION EXAM PRACTICE
2026/2027 COMPLETE (50) CURRENT TESTING
QUESTIONS AND CORRECT ANSWERS WITH DETAILED
RATIONALES.
GAS WORK
Prepare effectively for the NYC DOB Gas Work Qualification Exam with this focused
practice resource. It supports review of gas piping systems, installation practices,
testing procedures, safety requirements, building codes, and regulatory compliance.
Use the material to reinforce your technical knowledge, practice key concepts, and
identify areas that may require additional study. This resource is suited for gas work
professionals, plumbers, construction technicians, and candidates preparing for the
NYC DOB qualification examination.
MULTIPLE CHOICE.
Section 1: Gas Work Qualifications & Regulatory Framework (Questions 1–
10)
According to NYC Administrative Code Section 28-423.1, gas work in New
York City can only be performed by which of the following?
A) Any licensed plumber regardless of qualification
B) A Licensed Master Plumber (LMP) or a person holding a Gas Work
Qualification working under the direct supervision of an LMP
C) Any person who has completed a 16-hour training course
D) A licensed electrician with gas work experience
Answer: B) A Licensed Master Plumber (LMP) or a person holding a Gas
Work Qualification working under the direct supervision of an LMP
Rationale: Per NYC Administrative Code Section 28-423.1, gas work can
only be performed by a Licensed Master Plumber (LMP) or by a person
working under the direct and continuing supervision of an LMP if that
person holds a Full Gas Work Qualification or a Limited Gas Work
Qualification.
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What is the minimum age requirement for obtaining a Gas Work Qualification
in NYC?
A) 16 years old
B) 18 years old
C) 21 years old
D) 25 years old
Answer: B) 18 years old
Rationale: Applicants for both Full and Limited Gas Work Qualifications
must be at least eighteen (18) years old.
How many years of full-time experience performing gas work under the direct
and continuing supervision of a Licensed Master Plumber are required for a
Full Gas Work Qualification?
A) 2 years
B) 3 years
C) 5 years
D) 7 years
Answer: C) 5 years
Rationale: Full Gas Work Qualification requires a minimum of 5 years of
full-time experience performing gas work under the direct and continuing
supervision of an LMP, with at least 1 year of that experience in New York
City.
A Limited Gas Work Qualification expires:
A) After 1 year
B) After 3 years
C) After 5 years and cannot be renewed
D) Never, it is permanent
Answer: C) After 5 years and cannot be renewed
Rationale: A Limited Gas Work Qualification expires five years after
issuance and may not be renewed. Holders must apply for and obtain a
Full Gas Work Qualification to continue performing gas work after
expiration.
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What is the passing score for the Gas Work Qualification written examination?
A) 60% (30 correct answers)
B) 65% (33 correct answers)
C) 70% (35 correct answers)
D) 75% (38 correct answers)
Answer: C) 70% (35 correct answers)
Rationale: The Gas Work written exam consists of 50 questions, and the
passing score is 70%, which equates to 35 correct answers.
Which of the following is NOT a requirement for a Full Gas Work Qualification
applicant?
A) Being at least 18 years old
B) Being able to read, write, and understand the English language
C) Holding a bachelor's degree in engineering
D) Being of good moral character
Answer: C) Holding a bachelor's degree in engineering
Rationale: Requirements for Full Gas Work Qualification include being at
least 18 years old, being able to read, write, and understand English,
being fit to perform the work, being of good moral character, and passing
the Department-sponsored Gas Work Qualification exam. A bachelor's
degree is not required.
The Gas Work Qualification written exam is administered by:
A) NYC Department of Environmental Protection (DEP)
B) NYC Fire Department (FDNY)
C) NYC Department of Buildings (DOB) through a contracted exam
administrator
D) New York State Department of Labor
Answer: C) NYC Department of Buildings (DOB) through a contracted
exam administrator
Rationale: The NYC Department of Buildings has contracted with CPS HR
Consulting to provide licensing and qualifications examinations.
Accepted applicants receive an email from the exam administrator with
instructions on how to schedule the exam.
NYC DOB GAS WORK QUALIFICATION EXAM PRACTICE
2026/2027 COMPLETE (50) CURRENT TESTING
QUESTIONS AND CORRECT ANSWERS WITH DETAILED
RATIONALES.
GAS WORK
Prepare effectively for the NYC DOB Gas Work Qualification Exam with this focused
practice resource. It supports review of gas piping systems, installation practices,
testing procedures, safety requirements, building codes, and regulatory compliance.
Use the material to reinforce your technical knowledge, practice key concepts, and
identify areas that may require additional study. This resource is suited for gas work
professionals, plumbers, construction technicians, and candidates preparing for the
NYC DOB qualification examination.
MULTIPLE CHOICE.
Section 1: Gas Work Qualifications & Regulatory Framework (Questions 1–
10)
According to NYC Administrative Code Section 28-423.1, gas work in New
York City can only be performed by which of the following?
A) Any licensed plumber regardless of qualification
B) A Licensed Master Plumber (LMP) or a person holding a Gas Work
Qualification working under the direct supervision of an LMP
C) Any person who has completed a 16-hour training course
D) A licensed electrician with gas work experience
Answer: B) A Licensed Master Plumber (LMP) or a person holding a Gas
Work Qualification working under the direct supervision of an LMP
Rationale: Per NYC Administrative Code Section 28-423.1, gas work can
only be performed by a Licensed Master Plumber (LMP) or by a person
working under the direct and continuing supervision of an LMP if that
person holds a Full Gas Work Qualification or a Limited Gas Work
Qualification.
, Page 2 of 18
What is the minimum age requirement for obtaining a Gas Work Qualification
in NYC?
A) 16 years old
B) 18 years old
C) 21 years old
D) 25 years old
Answer: B) 18 years old
Rationale: Applicants for both Full and Limited Gas Work Qualifications
must be at least eighteen (18) years old.
How many years of full-time experience performing gas work under the direct
and continuing supervision of a Licensed Master Plumber are required for a
Full Gas Work Qualification?
A) 2 years
B) 3 years
C) 5 years
D) 7 years
Answer: C) 5 years
Rationale: Full Gas Work Qualification requires a minimum of 5 years of
full-time experience performing gas work under the direct and continuing
supervision of an LMP, with at least 1 year of that experience in New York
City.
A Limited Gas Work Qualification expires:
A) After 1 year
B) After 3 years
C) After 5 years and cannot be renewed
D) Never, it is permanent
Answer: C) After 5 years and cannot be renewed
Rationale: A Limited Gas Work Qualification expires five years after
issuance and may not be renewed. Holders must apply for and obtain a
Full Gas Work Qualification to continue performing gas work after
expiration.
, Page 3 of 18
What is the passing score for the Gas Work Qualification written examination?
A) 60% (30 correct answers)
B) 65% (33 correct answers)
C) 70% (35 correct answers)
D) 75% (38 correct answers)
Answer: C) 70% (35 correct answers)
Rationale: The Gas Work written exam consists of 50 questions, and the
passing score is 70%, which equates to 35 correct answers.
Which of the following is NOT a requirement for a Full Gas Work Qualification
applicant?
A) Being at least 18 years old
B) Being able to read, write, and understand the English language
C) Holding a bachelor's degree in engineering
D) Being of good moral character
Answer: C) Holding a bachelor's degree in engineering
Rationale: Requirements for Full Gas Work Qualification include being at
least 18 years old, being able to read, write, and understand English,
being fit to perform the work, being of good moral character, and passing
the Department-sponsored Gas Work Qualification exam. A bachelor's
degree is not required.
The Gas Work Qualification written exam is administered by:
A) NYC Department of Environmental Protection (DEP)
B) NYC Fire Department (FDNY)
C) NYC Department of Buildings (DOB) through a contracted exam
administrator
D) New York State Department of Labor
Answer: C) NYC Department of Buildings (DOB) through a contracted
exam administrator
Rationale: The NYC Department of Buildings has contracted with CPS HR
Consulting to provide licensing and qualifications examinations.
Accepted applicants receive an email from the exam administrator with
instructions on how to schedule the exam.
