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2026 Statistics

Key Facts: FL Plumber Exam

70%

Passing Score

DBPR

110

Trade Questions

9-hour limit

$295

Total Fees

DBPR/PTI

FPC

Code Base

Based on IPC

Florida's plumber exam is one of the most comprehensive in the nation. The trade exam includes 110 questions with an isometric drawing component requiring candidates to interpret plumbing system diagrams. The 9-hour time limit and 70% passing score make thorough code knowledge essential. A separate business/finance exam is also required.

About the FL Plumber Exam

The Florida plumber exam is administered by Professional Testing Inc. under DBPR. The trade exam has 110 questions including 45 trade knowledge, 65 plan reading/code, and isometric drawing interpretation with a 9-hour time limit. A separate 120-question business exam covers Florida business law, lien law, and financial management.

Questions

110 scored questions

Time Limit

9 hours (trade exam)

Passing Score

70%

Exam Fee

$135 + $80 + $80 (Florida DBPR / Professional Testing Inc.)

FL Plumber Exam Content Outline

25%

Drainage & Waste Systems

Drain sizing, DFU calculations, slope requirements, cleanouts, and Florida-specific building sewer requirements

20%

Water Supply & Distribution

Pipe sizing, WSFU, backflow prevention, water heaters, pressure regulation, and reclaimed water systems

20%

Venting & Isometric Drawings

Vent sizing, wet venting, AAVs, vent termination, and interpreting isometric plumbing diagrams

15%

Gas Piping & Special Systems

Gas pipe sizing, BTU calculations, storm drainage, grease interceptors, and sewage ejectors

20%

Code Administration & Business

DBPR licensing, permits, inspections, Florida business law, lien law, and contractor responsibilities

How to Pass the FL Plumber Exam

What You Need to Know

  • Passing score: 70%
  • Exam length: 110 questions
  • Time limit: 9 hours (trade exam)
  • Exam fee: $135 + $80 + $80

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

FL Plumber Study Tips from Top Performers

1Practice isometric drawing interpretation — this section is unique to Florida
2Master DFU and WSFU calculations for pipe sizing
3Study Florida-specific amendments to the IPC (building sewer minimums, reclaimed water)
4Learn gas pipe sizing using BTU/hr demand calculations
5Prepare separately for the business exam: Florida lien law, workers comp, and financial management
6Practice timed exams — 9 hours seems long but the isometric section requires careful analysis

Frequently Asked Questions

What is the Florida plumber exam format?

The trade exam has 110 questions: 45 trade knowledge, 65 plan reading/code, and approximately 5 isometric drawing questions, with a 9-hour time limit. A separate 120-question business exam covers Florida business law, lien law, and financial management. Both require 70% to pass.

Does the Florida exam have isometric drawings?

Yes, the Florida plumber trade exam includes isometric drawing interpretation questions. Candidates must analyze plumbing system diagrams, identify pipe sizes, trace vent paths, and calculate DFU loads from isometric representations.

What code does Florida use?

Florida uses the Florida Plumbing Code (FPC), which is based on the International Plumbing Code (IPC) with Florida-specific amendments addressing the state's climate, high water table, and hurricane-prone conditions.

How much does the Florida plumber exam cost?

The total exam fees are approximately $295: $135 application fee, $80 for the trade exam, and $80 for the business exam. Additional costs include code books and study materials.