What the Class A General Engineering Contractor License Covers

The California Class A General Engineering Contractor license is the Contractors State License Board (CSLB) classification that lets you take prime contracts on fixed engineering works such as highways, bridges, dams, pipelines, and sewer systems. Business and Professions Code Section 7056 defines the classification around projects that require specialized engineering knowledge, which separates it from the Class B building license that covers homes, offices, and other structures.¹ To get one, you need four years of qualifying experience, passing scores on two exams, a $25,000 contractor’s bond, and workers’ compensation coverage or a valid exemption.

What the License Covers

Class A work is built around the idea of fixed works: permanent improvements integrated into land or water that serve a functional purpose. The deciding question is whether a project calls for specialized engineering skill rather than a combination of building trades. Excavating, grading, pouring concrete for a bridge substructure, laying pipeline, building a highway: all Class A.¹

A Class A holder can self-perform only work that falls within the general engineering classification. You cannot take a commercial building project that requires two or more unrelated building trades unless you also hold a Class B license, and a Class B general building contractor cannot take a prime contract for work that requires specialized engineering knowledge. The two classifications are separate lanes, and CSLB enforces them that way.

Projects You Can Take On

The statute lists a wide range of project types. In practice they cluster into a handful of categories:²

Water systems: irrigation, drainage, water power and supply, flood control, inland waterways, dams, hydroelectric projects, levees, and river reclamation.
Maritime: harbors, docks, wharves, shipyards, and ports.
Transportation: railroads, highways, streets, roads, tunnels, airports, and airways.
Utilities and waste: sewers, sewage disposal, waste reduction plants, pipelines for petroleum or other liquids and gases, powerhouses, power plants, and utility installations.
Structures: bridges, overpasses, underpasses, and similar heavy civil works.
Industrial: refineries, chemical plants, mines, and metallurgical plants requiring specialized engineering skill.
Recreational and earthwork: parks, playgrounds, land leveling, earthmoving, excavating, grading, trenching, paving, surfacing, and concrete work connected to any of the fixed works above.

That last category deserves a closer look. Grading, paving, and concrete work fall under Class A only when performed in connection with one of the listed fixed works. Pouring a sidewalk for a commercial building is Class B or specialty work. Pouring the deck of a highway overpass is Class A. Context decides.

Experience You Need to Qualify

The exam requires at least four years of experience in general engineering work. CSLB credits only time at journey level or above, meaning work as a journey-level worker, foreperson, supervising employee, contractor, or owner-builder. Someone who can attest to the work has to verify your experience, and CSLB can ask for documentation to back up what you claim.³

Qualifying Individual: RMO or RME

Every CSLB license needs a Qualifying Individual who meets the experience and exam requirements and takes responsibility for the technical side of the business. That person is either a Responsible Managing Officer (RMO), an owner or officer of the company, or a Responsible Managing Employee (RME), a W-2 employee. An RME must work at least 32 hours per week or 80 percent of the company’s total operating hours, whichever is less, and cannot serve as qualifier on any other active CSLB license.

An RMO can qualify for more than one firm under limited conditions. There must be at least 20 percent common ownership between the firms, or the additional firm must be a subsidiary or joint venture. Even then, a qualifying individual can serve on no more than three firms in any one-year period. Violating these limits is a disciplinary offense and a misdemeanor carrying a fine of $3,000 to $5,000.⁴

Bond and Insurance Requirements

Before CSLB will issue the license, you file a $25,000 contractor’s bond. The bond protects consumers against financial losses caused by a contractor’s failure to perform. The same $25,000 amount applies to the separate bond of the qualifying individual that some business structures require. Both figures were set by Senate Bill 607, effective January 1, 2023.⁵

Applicants with employees must show proof of workers’ compensation coverage. A sole owner with no employees can file a Certificate of Exemption instead, certifying under penalty of perjury that no one on the job is subject to California’s workers’ compensation laws.⁶ The exemption is not available when the license qualifier is an RME, because an RME is by definition an employee. Coverage, or the exemption, must stay current for the life of the license.⁷

Application and Fees

The application package goes to CSLB headquarters by mail. The initial application fee is $450 for one classification. If CSLB accepts your application, you receive a Notice to Appear for Examination. After passing both exams and clearing the background check, a sole owner pays an additional $200 initial license fee before the license is issued.⁸

Once CSLB accepts your application as complete, every individual listed on it gets instructions for Live Scan fingerprinting. The background check must clear before the license is granted.⁹ Processing times move. As of early May 2026, CSLB was working on exam applications received roughly eight weeks earlier.¹⁰ Build that lead time into any project timeline.

The Two Exams

You take the Law and Business exam and the Class A Trade exam. Law and Business covers the legal and financial side of a contracting business: contract requirements, employee regulations, licensing rules. The Trade exam tests technical knowledge for heavy civil and engineering work, including project planning, cost estimating, grading, paving, safety, and environmental compliance around heavy equipment and hazardous materials.¹¹

Fail either exam and you wait at least 21 calendar days before trying again. You have 18 months from the date CSLB accepts your application to pass both. Miss that window and you start over with a new application and fee.¹²

What to Study

CSLB publishes a study guide listing the trade exam’s reference materials. For Class A, know these:¹³

The 2022 California Building Code, Electrical Code, and Plumbing Code (Title 24)
ACI 318: Building Code Requirements for Structural Concrete
The California Manual on Uniform Traffic Control Devices, Part 6 (Temporary Traffic Control)
Caltrans Standard Plans and Standard Specifications
Cal/OSHA General Industry, Construction, and Electrical Safety Orders (Title 8)
Excavation and Grading Handbook (Craftsman Book Company)
Moving the Earth: Excavation Equipment, Methods, Safety, and Cost (McGraw-Hill)
Fundamentals of Building Construction: Methods and Materials (Allen and Iano, Wiley)

Cal/OSHA safety orders and Caltrans standards show up heavily. Candidates who fail most often report weakness there.

Hazardous Substance Work Needs Separate Certification

A Class A license alone does not authorize work at listed hazardous waste sites or the installation and removal of underground storage tanks. Under BPC 7058.7, the license qualifier must first pass an approved hazardous substance certification exam before performing that work.¹⁴ You can still bid on and contract for underground storage tank work without the certification, but the actual installation or removal has to be performed by a certified contractor. Asbestos work and hazardous spill cleanup on highways are excluded from this certification and governed by separate rules.

Renewal and Keeping the License Active

Active Class A licenses expire every two years. Inactive licenses expire every four years.¹⁵ Renewal fees depend on status and business structure:

Active renewal, sole owner: $450
Active renewal, non-sole owner: $700
Inactive renewal, sole owner: $300
Inactive renewal, non-sole owner: $500

Miss your renewal date and the fees climb. Delinquent active renewal runs $675 for sole owners and $1,050 for other business structures. CSLB will retroactively reinstate an expired license if your renewal application arrives within 90 days of expiration, but you pay the delinquent rate.⁸ You can renew an expired license up to five years out, though any gap is unlicensed time on your record. After five years, the license is gone and you start fresh: new application, both exams again, full fee.¹⁵

Reciprocity From Other States

California has reciprocity agreements with Arizona, Louisiana, Mississippi, Nevada, and North Carolina. Not every classification is covered under each. For Class A General Engineering specifically, only Arizona and Nevada appear on CSLB’s reciprocal classifications list.¹⁶

To use reciprocity, you must have held an active license in good standing in the reciprocal state for the previous five years and submit a verification form completed by that state’s licensing agency. Reciprocity waives the trade exam, but you still complete the full application, pay all fees, and meet California’s bonding and insurance requirements.¹⁷ Contractors from states without an agreement apply through the standard process with no exam waivers.

What Happens If You Work Without the License

A first conviction for unlicensed contracting is a misdemeanor punishable by up to $5,000 in fines, up to six months in county jail, or both. Penalties escalate sharply when the unlicensed work exploits a natural disaster declared by the governor or president, where fines reach $10,000 and imprisonment can extend to three years.

The financial side is often worse than the criminal side. Under BPC 7031, an unlicensed contractor cannot sue to collect payment for work performed, no matter how valid the underlying claim. The client can sue to recover every dollar paid, with no offset for the value of materials or labor already supplied. Any security interest taken to guarantee payment for the unlicensed work is unenforceable. Courts have read this as full disgorgement: no license during the work, give it all back. A narrow “substantial compliance” doctrine exists for contractors who held a valid license, acted in good faith to maintain it, and moved promptly to fix a lapse, but it is unavailable to anyone who was never licensed in California at all.¹⁸

1
California Legislative Information. California Business and Professions Code BPC 7056
2
Contractors State License Board. Description of Classifications
3
Contractors State License Board. CSLB – Qualifying Experience for the Examination
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California Legislative Information. California Business and Professions Code BPC 7068.1
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Contractors State License Board. Bond Requirements
6
Contractors State License Board. Exemption From Workers Compensation Insurance
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California Legislative Information. California Business and Professions Code BPC 7071.6
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Contractors State License Board. List of All CSLB Fees
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Contractors State License Board. Get Fingerprinted – Live Scan
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Contractors State License Board. CSLB Processing Times
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Contractors State License Board. CSLB Examinations Frequently Asked Questions
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Contractors State License Board. CSLB Public Information Center Frequently Asked Questions
13
Contractors State License Board. General Engineering (A) License Examination Study Guide
14
California Legislative Information. California Business and Professions Code BPC 7058.7
15
Contractors State License Board. General Renewal Information
16
Contractors State License Board. Reciprocal Classifications List
17
Contractors State License Board. Reciprocity Requirements
18
California Legislative Information. California Business and Professions Code BPC 7031