- Total cost for both exam parts is $295: $135 registration, $80 Trade Knowledge, $80 Business and Finance.
- Trade Knowledge needs 112 of 160 points (70%); isometric drawings need agreement from at least 2 of 3 graders.
- Drainage, Water Distribution, and Medical Gas Piping are tied as the largest domains at 20% each.
- Business and Finance is 120 questions in 6 hours 30 minutes, open-book, also scored at 70%.
Fee & Registration Snapshot
Before you touch a single practice question, get the money and the moving parts straight. The Florida Construction Industry Licensing Board (CILB), under DBPR, oversees the credential, but the day-to-day logistics are split between two vendors. Professional Testing handles registration, exam development, and scoring. Pearson VUE administers the computer-based Business and Finance exam at testing centers. The Plumbing Trade Knowledge exam, by contrast, is still given in scheduled paper-and-pencil sessions - a detail that trips up candidates who assume everything is computer-based in 2026.
The current fee structure breaks down like this:
- $135 registration fee
- $80 for the Trade Knowledge exam
- $80 for the Business and Finance exam
- $295 total to sit for both required parts
For a full walkthrough of how these fees stack against retake costs and reference materials, see the CFC Certification Cost 2026: Complete Pricing Breakdown. If you're still mapping out testing windows and cutoff dates for registration, bookmark the CFC Exam Dates 2026: Testing Windows, Deadlines & Scheduling before you pay anything.
Exam Format at a Glance
The Florida Certified Plumbing Contractor Exam is really two separate tests that both have to be cleared. Confusing their formats is one of the most common planning mistakes candidates make.
Plumbing Trade Knowledge
- 110 multiple-choice questions, each worth 1 point
- 5 isometric drawings, each worth 10 points
- 160 total possible points
- Split across two open-book sessions of 4 hours 30 minutes each
- Paper-and-pencil administration on scheduled dates
Business and Finance
- 120 scored open-book multiple-choice questions
- 6 hours 30 minutes total testing time
- Computer-based, administered through Pearson VUE
- Unscored pilot questions may appear and won't count against you, but you won't know which ones they are
Because these two exams are graded and administered so differently, your prep timeline should treat them as separate projects rather than one combined study plan. The CFC Study Guide 2026: How to Pass on Your First Attempt walks through how to sequence prep for both halves without burning out on one before you've touched the other.
Key Takeaway
Trade Knowledge is paper-and-pencil in timed sessions; Business and Finance is computer-based at a Pearson VUE center. Confirm which format you're prepping for before you buy study materials.
Domain Weighting Cheat Sheet
Trade Knowledge content is distributed across eight domains, and the weighting tells you exactly where your study hours should go. Three domains are tied for the top spot, which means roughly 60% of the Trade Knowledge content lives in just three subject areas.
Drainage (20%)
Covers drain, waste, and vent (DWV) system sizing, slope requirements, trap and cleanout placement, and venting configurations.
- Know minimum slope requirements by pipe diameter
- Understand fixture unit calculations for drain sizing
Water Distribution (20%)
Covers supply piping sizing, water hammer control, backflow prevention, and pressure/velocity relationships.
- Master fixture unit demand tables
- Know backflow device placement rules by hazard classification
Medical Gas Piping (20%)
Covers installation, testing, and labeling standards for medical gas systems in healthcare facilities - a domain many residential-focused plumbers underestimate.
- Know required purity and pressure testing procedures
- Understand station outlet and alarm system requirements
The remaining five domains - Natural Gas Piping (15%), Industrial Piping (10%), Swimming Pools/Wells/Irrigation (5%), Solar (5%), and Fire Protection (5%) - still appear on every administration and can't be skipped, but they carry proportionally lighter question counts. For a full content breakdown of all eight areas with study priorities for each, review the CFC Exam Domains 2026: Complete Guide to All 8 Content Areas.
Scoring & Passing Rules
Both exams require a 70% score to pass, but the mechanics behind that number differ in ways worth memorizing.
- Trade Knowledge: 112 of 160 total points needed. Multiple-choice questions are worth 1 point each; drawings are worth 10 points each.
- Isometric drawing grading: Each drawing is graded independently by three licensed plumbing contractors. At least two of the three graders must agree before points are awarded - a built-in consensus check that rewards clean, code-compliant, unambiguous drawings over creative shortcuts.
- Business and Finance: 70% of 120 scored questions, with unscored pilot items mixed in that don't count toward your total.
- Four-year window: All required exam portions must be passed within four years of each other. If you pass Trade Knowledge but stall out on Business and Finance for longer than that window, your Trade Knowledge pass can expire.
For the exact point thresholds explained in more depth, including what happens if you pass one exam and not the other, see CFC Passing Score 2026: Exactly What You Need to Pass. If you're trying to gauge realistically how tough this exam is compared to what you've heard, the How Hard Is the CFC Exam? Complete Difficulty Guide 2026 article and the CFC Pass Rate 2026: What the Data Shows breakdown are worth reading before test day nerves set in.
Key Takeaway
Because drawings need two-of-three grader agreement, practice drawing isometrics the standard, textbook-correct way rather than shortcuts that might read as ambiguous to a human grader.
Eligibility Checklist
Passing the exam is only part of certification. The CILB also requires that applicants meet non-testing criteria before a license is issued.
- Minimum age of 18
- Generally four years of qualifying, documented plumbing experience, or an approved combination of education and experience
- Background screening
- Credit and financial responsibility review
- Liability and property-damage insurance coverage
- Workers' compensation compliance
These aren't exam-day requirements - they're paperwork and documentation you should start assembling well before your test date, since credit reviews and experience verification can take time. For the full eligibility rundown, including how education can substitute for some experience years, see CFC Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Renewal & CE Requirements
Passing the exam and getting licensed isn't the finish line. Certified licenses renew biennially, on August 31 of even-numbered years, and require 14 hours of continuing education per cycle. Those hours aren't just "any plumbing content" - they're distributed across specific required categories:
- Advanced or specialized construction
- Workplace safety
- Business practices
- Workers' compensation
- Laws and rules
- Wind mitigation
Building this into your long-term planning matters if you're evaluating whether the credential is worth pursuing in the first place - see Is the CFC Certification Worth It? Complete ROI Analysis 2026 for how ongoing CE obligations factor into the bigger financial picture, and the CFC Salary Guide 2026: Complete Earnings Analysis for how a certified license affects earning potential compared to unlicensed work.
The Week-Before Study Sprint
Generic study advice (flashcards, spaced repetition, timed drills) only earns its place here if it's mapped directly onto CFC content. Use the final stretch before your test date like this:
Drainage & Water Distribution Drills
- Run timed fixture-unit sizing problems for both domains since they're tied for the highest weight
- Re-check slope and backflow placement rules against your approved 2026 reference book
Medical Gas Piping Focus
- Review station outlet, alarm, and testing requirements - this domain is often under-studied relative to its 20% weight
- Cross off Natural Gas Piping (15%) basics you already know well to free up time
Isometric Drawing Practice
- Hand-draw at least 5 full isometric problems under timed conditions
- Check your drawings against standard conventions, since two of three graders must agree
Business and Finance Light Review
- Skim business practice and financial responsibility topics rather than cramming new material
- Confirm Pearson VUE appointment details and required ID
Want a printable version of a full multi-week plan rather than just the final sprint? The CFC Study Guide 2026: How to Pass on Your First Attempt lays out a complete week-by-week structure from day one, and running full-length questions on our practice test platform is the fastest way to see which of the eight domains still needs work before you commit to this final sprint.
Quick Reference Table
| Item | Trade Knowledge | Business and Finance |
|---|---|---|
| Format | Paper-and-pencil | Computer-based (Pearson VUE) |
| Questions | 110 MC + 5 isometric drawings | 120 scored MC (plus unscored pilot items) |
| Time | Two 4hr 30min sessions | 6hr 30min |
| Total Points | 160 (150 from MC, 50 from drawings) | 120 |
| Passing Score | 112 points (70%) | 70% |
| Fee | $80 | $80 |
| Book Policy | Open-book | Open-book |
Registration fee of $135 applies once, on top of the $80-per-exam fees, for a combined $295 total.
FAQ
No. This site covers exclusively the Florida Certified Plumbing Contractor Exam regulated by the Construction Industry Licensing Board under DBPR. Other credentials share the "CFC" abbreviation but have nothing to do with Florida plumbing licensure, different fees, and different exam structures.
No. Trade Knowledge and Business and Finance are scheduled and administered separately, but both required portions must be passed within four years of each other.
Both the Trade Knowledge and Business and Finance exams are open-book, but you need to use the approved reference list effective January 1, 2026, since older editions may not match question wording or code numbering.
Each isometric drawing is graded independently by three licensed plumbing contractors, and at least two must agree before points are awarded. Drawing clearly with standard conventions reduces the chance of grader disagreement costing you points.
Drainage, Water Distribution, and Medical Gas Piping are tied as the largest domains at 20% each, together making up roughly 60% of Trade Knowledge content, so they deserve priority over lower-weighted domains like Solar or Fire Protection at 5% each.