The gas line specialty is for contractors who build natural gas distribution and transmission piping outside buildings: the mains in the right-of-way and the service lines that end at the meter. Piping inside the building is a different license.
Status and legal basis
Gas line is a specialty contractor category created by board rule under F.S. 489.105(3)(q), not one of the statutory Division II trades. The old stand-alone rule (61G4-15.026) was repealed on May 5, 2024, and the category now sits in rule 61G4-15.100, Certified Specialty Contractors, adopted the same day. The category is still listed in the CILB exam schedule, so new applicants can test for it.
What the license covers
Rule 61G4-15.100(1)(u) limits the scope to "installation, modification, alteration, testing, repair and maintenance of natural gas transmission systems and natural gas distribution systems with all appurtenances within rights-of-way, easements, or terminating at meter."
| Piping | Who does it |
|---|---|
| Gas mains and services in rights-of-way and easements, to the meter | Gas line specialty contractor |
| LP and natural gas fuel lines within buildings | Mechanical contractor (F.S. 489.105(3)(i)) |
| Disconnect/reconnect on appliance changeouts | Class A and B A/C contractors may do this under 489.105(3)(f)-(g) |
Certified, not registered
Rule 61G4-15.100 provides for certification of these specialty contractors. Certification lets you contract statewide (F.S. 489.105(8)). Certification procedures and fees are the same as for other CILB contractors (rule 61G4-15.100(2)).
Eligibility
The rule points back to F.S. 489.111: 18 years old, good moral character, and an experience route (for example, 4 years as a skilled worker or foreman with 1 year as foreman, or a relevant degree plus 1 year).
The exams
| Exam | Scored questions | Time | Passing score |
|---|---|---|---|
| Business and Finance | 120 | 6.5 hours | 70% |
| Gas Line trade knowledge | 80 | 5 hours | 70% |
Content outline
| Area | Topic | Share |
|---|---|---|
| A | General knowledge | 10% |
| B | Testing and code compliance | 5% |
| C | Taps and connections | 5% |
| D | Pigging and purging | 5% |
| E | Maintenance | 5% |
| F | Welding and fusion | 20% |
| G | Safety | 20% |
| H | Excavation | 10% |
| I | Equipment | 10% |
| J | Materials | 5% |
| K | Location and investigation | 5% |
Welding/fusion and safety together are 40% of the exam.
Reference list overview
- Code of Federal Regulations, Title 49 Part 192 (pipeline safety)
- Rules of the Public Service Commission, Chapter 25-12 (safety of gas transportation by pipeline)
- API Specification 5L (line pipe) and ASTM D2513 (polyethylene gas pressure pipe)
- Metals and How to Weld Them
- Pipe and Excavation Contracting; Pipefitter's Handbook
- FDOT Utility Accommodation Manual and directional bore / jack and bore specifications
- Damage Prevention Guide (F.S. Chapter 556)
- Florida Highway Patrol Commercial Motor Vehicle Manual
- Florida Building Code: Fuel Gas (2023); OSHA 29 CFR 1926
Exam volume
Pearson VUE exam performance reports show very few gas line candidates: 5 graded attempts in 2025 and 2 in 2024.
Steps
- Confirm your experience is in gas distribution or transmission work.
- Register with Professional Testing, Inc. and schedule both exams at Pearson VUE.
- Pass both exams at 70%.
- Apply for certification with the CILB.
FAQ
Can a gas line contractor pipe a house from the meter to the appliances? No. The rule scope ends at the meter. Fuel gas inside buildings is listed in the mechanical contractor scope.
Does this cover propane? The rule text refers to natural gas transmission and distribution systems.
Is the old gas line rule still in force? No. 61G4-15.026 was repealed on May 5, 2024; the scope now appears in 61G4-15.100(1)(u).
Next step
Gas line candidates also take the Business and Finance exam. Our Florida Business and Finance Exam Prep covers all of it.