Exam-style questions
Multiple-choice, four-choice practice matched to the C-16 fire protection trade exam format.
California CSLB · Classification C-16
Practice estimating, sprinkler systems, underground mains, fire pumps, inspection, and safety for the C-16 exam.
Self-paced exam prep for the California C-16 Fire Protection Contractor trade exam, with optional Law & Business bundled into the same buying flow.
Focus
Fire protection trade
Trade-specific practice
Format
Self-paced online
No classroom scheduling
Bundle
Optional L&B
One checkout flow when needed
Practice estimating, sprinkler layout, wet, dry, preaction and deluge systems, standpipes, fire pumps, underground mains, and inspection and testing, with instant rationales on every answer.
Choose 3, 6 or 12 months of access and bundle Law & Business at a discount.
C-16 Fire Protection Contractor
AI help included · no extra cost
Needed by most CSLB applicants.
$100 once, for any package length.
+$100
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What you get
Practice in an exam-style format.
Everything is oriented around the exams: how questions are phrased, what they test, and how to move quickly without losing accuracy.
Rationale on every answer
Each answer explains the fire protection practice, rule, or calculation behind it.
Readiness tracking
See progress across the five C-16 outline sections before test day.
Any device, any time
Study from the truck, the jobsite, or home on phone, tablet, or desktop.
About the exam
What to know before you start.
Who the exam is for and the topics it covers.
Who this prep is for
The C-16 practice gives the most weight to the largest official area, installation of fire protection systems. Planning and estimating, safety, installation of underground fire main systems, and maintenance and repair of fire protection systems are covered too, following the CSLB outline for California applicants.
Topics at a glance
Exam
C-16 - Fire Protection Contractor
Best fit
Sprinkler fitters, fire protection foremen and designers, and inspection and service technicians preparing for the California trade exam
Topic focus
Planning and estimating, installation of underground fire main systems, installation of fire protection systems, maintenance and repair of fire protection systems, and safety
Content status
Question bank and official sources
We keep this prep tied to CSLB documents, current code editions, and the live Test2Pro question bank.
Question bank last updated: November 2026.
When a practice item depends on a code citation, we review it against the current edition listed for this exam.
CSLB sources
The Test2Pro content team keeps these sources current.
We re-check them on an ongoing basis and whenever CSLB publishes major guide changes.
Why this format
Study around your work schedule.
Most candidates are fitting study around jobsites and workdays. The format reflects that.
Self-paced
Study around jobs, service calls, and the busy season instead of reshaping your week.
Online, no scheduling
Open the prep bank anytime without live class times or a prep-center appointment.
Trade-focused practice
Stay close to the fire protection exam outline.
Coverage
What's inside the prep bank
Review the live coverage breakdown below to see the fire protection sections this prep is built around, from planning and estimating and underground mains to sprinkler, standpipe, preaction and deluge systems, fire pumps and tanks, inspection and maintenance, and safety.
Live category coverage
Planning and Estimating
~100+ items
Installation of Underground Fire Main Systems
~79+ items
Installation of Fire Protection Systems
~200+ items
Maintenance and Repair of Fire Protection Systems
~70+ items
Safety
~76+ items
Also required for most applicants
Add Law & Business when your application requires both exams.
Most C-16 applicants also need Law & Business. Add it at checkout if you still need that exam.
Optional add-on
Law & Business
Business organization, finances, employment, insurance, contracts, public works, and safety.
If you want it separately, See Law & Business prep
Trade-specific
Fire protection exam prep
Topics from CSLB's current C-16 exam outline.
Self-paced
Online format
Built for working sprinkler fitters and contractor applicants.
3, 6 or 12
Months of access
Choose the term that fits your timeline.
Optional L&B
Bundle when needed
Add the companion business exam in the same purchase flow.
Common questions
Before you start.
Choosing C-16 exam prep: what should it include, and how do I avoid paying for the wrong material?
CSLB doesn't require a school, so prep is optional. If you buy it, check that it follows CSLB's five C-16 areas, explains every answer and shows which areas you miss. Try before you pay: take the free 20-question C-16 test or open the full demo with a free account. Test2Pro is online practice only; you apply, schedule and test through CSLB and PSI.
Applying for your first license: do I need Law & Business too, and can I skip it?
Most first-time applicants must pass both C-16 and Law & Business. You skip Law & Business only if CSLB waives it for you. You can add it to your C-16 prep from the purchase card on this page.
Planning your study time: how long should I prepare, and how do I avoid running out of time?
There is no set time. CSLB gives you 18 months from the day it accepts your application to pass, and after a failed try you can retake the exam in 21 days for a new fee. Choose a longer term if several of the five areas are new to you, or a shorter one if you already work across most of them.
When your access ends: what happens, and will I be charged automatically?
Your access ends when the months you paid for are over. It is a one-time payment, not a subscription, so nothing is charged automatically.
What is AI Pro?
AI Pro is free for everyone. Get explanations, ask follow-up questions, and study in your language.
Studying between jobs: can I practice on my phone?
Yes. Practice works on phone, tablet and computer, and you pick up where you left off.
Ready when you are
Start your C-16 fire protection prep today.
Choose the access length that fits your timeline, keep your prep online and self-paced, and add Law & Business when you need both exams covered together.