C-13 — Fencing

A California C-13 Fencing license is the CSLB specialty classification that lets a contractor build, install, alter, or repair fences, gates, corrals, and related enclosures for pay. It’s a standalone trade license — you don’t need a broader (and harder-to-qualify-for) General Building license to bid fencing jobs. To hold one you pass two CSLB exams (the C-13 trade exam plus Law & Business), document four years of qualifying journey-level fencing experience, and post the required contractor’s bond.

What a C-13 Contractor Actually Builds

Per the California Code of Regulations, Title 16, Section 832.13, a fencing contractor “constructs, erects, alters, or repairs all types of fences, corrals, runs, railings, cribs, game court enclosures, guard rails and barriers, playground game equipment, backstops, posts, flagpoles, and gates” — with one notable exclusion: masonry walls, which fall under C-29 (see the comparison section below).

In practice, that scope shows up as jobs like:

• Installing chain-link security fencing around a commercial yard or self-storage facility, complete with gates, tension wire, and privacy slats.
• Building a cedar or redwood privacy fence and matching gate for a residential backyard, set on concrete footings.
• Erecting agricultural fencing — field wire, pipe corrals, livestock runs — for a ranch or equestrian property.
• Fabricating and installing ornamental wrought-iron or aluminum estate fencing with an automated entry gate.
• Installing code-required pool safety fencing and self-closing gate hardware around a residential swimming pool.
• Building outfield backstops, dugout enclosures, or game-court fencing for a school or park athletic field, and setting flagpoles.

The C-13 Exam: What’s Actually Tested

Every CSLB applicant sits two separate exams: the classification’s trade exam and the Law & Business exam. Both are closed-book, multiple-choice with four answer choices, and each carries a 3.5-hour time limit. A calculator is provided for the math-based questions, and there’s no penalty for guessing — CSLB advises answering every question rather than leaving one blank.

According to CSLB’s official C-13 study guide (in effect for exams scheduled October 1, 2023 forward, currently revised March 2026), the trade exam breaks down into four sections:

• Planning and Estimating — 16% (planning fencing projects, reading and interpreting plans, estimating fencing projects)
• Preparation and Post Installation — 18% (job site layout and marking, determining posthole dimensions, post and concrete footing installation)
• Fence, Gate, and Rail Installation and Repair — 50% (chain-link, agricultural, wood, ornamental, vinyl, and composite/laminate fences and gates; playgrounds, swimming pools, and game courts; flagpole installations)
• Safety — 16% (personnel safety, Cal/OSHA procedures, environmental safety)

CSLB notes these percentages are approximate. As for the number of questions on the C-13 exam specifically, CSLB does not publish that figure the way it does for Law & Business (a well-documented 115 questions) — budget the full 3.5 hours regardless of how many questions you’re given. On passing scores: CSLB scores exams using a criterion-referenced (Angoff) method rather than a flat published cutoff, and it will only tell you pass or fail, never your numeric score. A 73% threshold is commonly cited for the Law & Business exam; CSLB does not publish a fixed passing percentage for individual trade exams like C-13.

Requirements to Get Licensed

• Experience: four years of journey-level fencing experience (as a worker, foreman, supervising employee, or owner-builder) within the last 10 years, verified through a CSLB certification-of-experience form signed by someone who can vouch for your work.
• Substitutions: CSLB may credit up to three of those four years for certified education or an apprenticeship program in the trade — but at least one full year must still be hands-on practical experience.
• Application: file the Application for Original Contractor License with the current $450 non-refundable application fee, which covers scheduling for both required exams (CSLB doesn’t itemize a separate “exam fee”).
• After passing: pay the initial license fee — $200 for a sole owner, $350 for a corporation, partnership, joint venture, or LLC — and file your bond before CSLB issues the license.
• Contractor’s bond: $25,000, or an equivalent cash deposit, per Business & Professions Code Section 7071.6.
• Workers’ compensation: required once you have employees; a sole owner with no employees may instead file a Certification of Exemption from Workers’ Compensation Insurance.

C-13 vs. the Classes People Confuse It With

C-29 Masonry. A masonry contractor builds walls and fences out of block, brick, or other masonry units, laid with or without mortar. If the fence is going up in block or brick, that’s C-29’s territory — the C-13 classification explicitly excludes masonry walls. Choose C-13 for wood, chain-link, vinyl, ornamental metal, or composite fencing; choose C-29 when the job is a masonry wall.

C-27 Landscaping. A landscape contractor can install fencing and other hardscape elements when they’re incidental to a broader landscape design-and-installation contract. If a client hires someone purely to build a fence, CSLB expects that to be done under a C-13. If the fence is one feature inside a larger yard, garden, or hardscape project, a C-27 can typically cover it as part of that scope.

B General Building. A Class B General Building contractor may only take on work outside its core scope when that work is incidental and supplemental to a project requiring at least two unrelated building trades. A stand-alone fencing contract doesn’t meet that bar, so a General Building license isn’t a substitute for C-13 when fencing is the entire job.

Who Hires a C-13 Contractor

Typical clients include homeowners who want privacy or pool-safety fencing; HOAs and property managers maintaining perimeter and security fencing; ranch, farm, and equestrian property owners; schools, parks, and municipalities needing athletic-field backstops and enclosures; commercial and industrial property owners who need chain-link security fencing; and general contractors or production homebuilders who subcontract the fencing scope on new-construction tracts.

C-13 Fencing FAQ

Does a C-13 license let me pour the concrete footings for fence posts?
Yes. Post and concrete footing installation is part of the scored “Preparation and Post Installation” section of the C-13 exam, squarely within the classification’s scope.

Can I build a block or brick fence with a C-13 license?
No. The C-13 classification description explicitly excludes masonry walls; that work falls under C-29 Masonry.

Do I need to hire a licensed contractor to fence my own property?
Homeowners can do their own work under California’s owner-builder exemption, but hiring someone else to build the fence for pay requires that person or company to hold a C-13 (or otherwise applicable) license.

Does C-13 cover swimming pool safety fencing?
Yes — pool enclosures and barriers fall within the classification’s scope and are tested directly in the exam’s “Fence, Gate, and Rail Installation and Repair” section, which carries the heaviest weighting on the exam at 50%.

What’s the minimum accessible gate width tested on the exam?
CSLB’s own published sample question puts the California Building Code minimum width for a disability-access gate at 36 inches — a reminder that the exam tests code knowledge alongside hands-on fence-building skills.

Can a General Building (B) contractor install fencing instead of hiring a C-13?
Only if the fencing is incidental and supplemental to a larger multi-trade project the B contractor is already licensed to run. A stand-alone fencing contract calls for a C-13.

Is chain-link the only material covered on the C-13 exam?
No. The exam covers chain-link, agricultural, wood, ornamental, vinyl, and composite/laminate fences and gates, as well as flagpole installation.

How much should I budget to get licensed, beyond studying?
Plan for the $450 CSLB application fee, an annual bond premium (a small fraction of the $25,000 bond amount, not the full bond value), and the $200 (sole owner) or $350 (corporation/partnership/LLC) initial license fee once you pass — see our current fee and bond breakdown for exact, up-to-date numbers.