NYC DOB Master Plumber License Exam
Practice Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. Which governing body issues the Master Plumber License in New York
City, and what is its primary regulatory role regarding plumbing work?
A. New York State Department of Labor; oversees apprenticeship
certification only
B. NYC Department of Buildings; regulates, licenses, and oversees
plumbing work and permit issuance
C. NYC Department of Buildings; issues licenses and regulates
plumbing construction, inspections, and compliance under NYC
Construction Codes
D. U.S. Department of Housing and Urban Development; manages all
plumbing licensing nationwide
The NYC Department of Buildings is responsible for issuing the
Master Plumber License and enforcing compliance with NYC
Plumbing and Construction Codes, including permitting and
inspection authority for plumbing work.
2. What is the minimum age requirement for applicants seeking a Master
Plumber License in NYC?
A. 16 years old
B. 17 years old
C. 18 years old or older
, D. 21 years old
Applicants must be at least 18 years old to qualify for the Master
Plumber License, ensuring legal adulthood and responsibility for
licensed construction work.
3. Which of the following best describes the structure of the NYC Master
Plumber written examination?
A. 50 true/false questions completed in 2 hours
B. 75 multiple-choice questions with open book access
C. 100 multiple-choice questions with a 4-hour time limit
D. 150 scenario-based questions with no time limit
The written exam contains 100 multiple-choice questions and is
administered under timed conditions requiring comprehensive
knowledge of plumbing codes and systems.
4. What is the minimum passing score required for the written Master
Plumber examination?
A. 60%
B. 65%
C. 70%
D. 80%
A candidate must achieve at least 70% to pass the written portion,
reflecting the high competency standard required for licensing.
5. Which of the following best describes the experience requirement for
most applicants without an engineering degree?
A. 3 years total plumbing experience
B. 5 years total experience under any contractor
C. At least 7 years of plumbing experience within the last 10 years
under a licensed Master Plumber, including journeyman experience
in NYC
D. 10 years of independent plumbing business ownership
, Most applicants must demonstrate at least seven years of supervised
plumbing experience, including at least two years as a NYC
journeyman plumber.
6. What portion of required experience must be completed specifically as
a journeyman plumber in NYC?
A. No journeyman experience is required
B. At least 6 months
C. At least 2 years of journeyman plumber experience in NYC
D. At least 5 years of journeyman experience
NYC licensing rules require a minimum of two years of journeyman
experience within the overall experience requirement to ensure local
code familiarity.
7. Which subject area is heavily emphasized in the Master Plumber
written exam based on question distribution?
A. Architectural design principles
B. Electrical wiring systems
C. Plumbing drainage systems and code compliance
D. HVAC refrigeration cycles
Drainage and plumbing code knowledge represent a significant
portion of the exam, reflecting its central role in plumbing systems.
8. What is the primary regulatory code used for NYC plumbing
examination questions?
A. International Mechanical Code only
B. National Electrical Code
C. NYC Plumbing Code (NYC PC) and related NYC Construction Codes
D. Federal OSHA standards exclusively
The exam is based primarily on NYC-specific Plumbing Code and
Construction Codes, not generic national standards alone.
Practice Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. Which governing body issues the Master Plumber License in New York
City, and what is its primary regulatory role regarding plumbing work?
A. New York State Department of Labor; oversees apprenticeship
certification only
B. NYC Department of Buildings; regulates, licenses, and oversees
plumbing work and permit issuance
C. NYC Department of Buildings; issues licenses and regulates
plumbing construction, inspections, and compliance under NYC
Construction Codes
D. U.S. Department of Housing and Urban Development; manages all
plumbing licensing nationwide
The NYC Department of Buildings is responsible for issuing the
Master Plumber License and enforcing compliance with NYC
Plumbing and Construction Codes, including permitting and
inspection authority for plumbing work.
2. What is the minimum age requirement for applicants seeking a Master
Plumber License in NYC?
A. 16 years old
B. 17 years old
C. 18 years old or older
, D. 21 years old
Applicants must be at least 18 years old to qualify for the Master
Plumber License, ensuring legal adulthood and responsibility for
licensed construction work.
3. Which of the following best describes the structure of the NYC Master
Plumber written examination?
A. 50 true/false questions completed in 2 hours
B. 75 multiple-choice questions with open book access
C. 100 multiple-choice questions with a 4-hour time limit
D. 150 scenario-based questions with no time limit
The written exam contains 100 multiple-choice questions and is
administered under timed conditions requiring comprehensive
knowledge of plumbing codes and systems.
4. What is the minimum passing score required for the written Master
Plumber examination?
A. 60%
B. 65%
C. 70%
D. 80%
A candidate must achieve at least 70% to pass the written portion,
reflecting the high competency standard required for licensing.
5. Which of the following best describes the experience requirement for
most applicants without an engineering degree?
A. 3 years total plumbing experience
B. 5 years total experience under any contractor
C. At least 7 years of plumbing experience within the last 10 years
under a licensed Master Plumber, including journeyman experience
in NYC
D. 10 years of independent plumbing business ownership
, Most applicants must demonstrate at least seven years of supervised
plumbing experience, including at least two years as a NYC
journeyman plumber.
6. What portion of required experience must be completed specifically as
a journeyman plumber in NYC?
A. No journeyman experience is required
B. At least 6 months
C. At least 2 years of journeyman plumber experience in NYC
D. At least 5 years of journeyman experience
NYC licensing rules require a minimum of two years of journeyman
experience within the overall experience requirement to ensure local
code familiarity.
7. Which subject area is heavily emphasized in the Master Plumber
written exam based on question distribution?
A. Architectural design principles
B. Electrical wiring systems
C. Plumbing drainage systems and code compliance
D. HVAC refrigeration cycles
Drainage and plumbing code knowledge represent a significant
portion of the exam, reflecting its central role in plumbing systems.
8. What is the primary regulatory code used for NYC plumbing
examination questions?
A. International Mechanical Code only
B. National Electrical Code
C. NYC Plumbing Code (NYC PC) and related NYC Construction Codes
D. Federal OSHA standards exclusively
The exam is based primarily on NYC-specific Plumbing Code and
Construction Codes, not generic national standards alone.
