Business Organization & Licensing
This chapter explains how California contractor licenses are organized: the classification system, who must qualify a license, how a business can legally be structured, the bonds every licensee carries, and what the CSLB can do when the rules are broken. Master these topics and you have covered roughly one out of every eight exam questions.
Key points to drill
Each teaching note below is folded. Open a heading to read that note in full — nothing in it is shortened.
License Classifications: A, B, and C
Which class the job belongs to
The rule
California licenses contractors in three classes, A General Engineering, B General Building and C Specialty, and a contractor may contract only inside the class it holds, except for work that is incidental and supplemental to that class.
When it applies — and when it does not
- Class A is for fixed works needing specialized engineering knowledge: highways, streets and roads, dams, sewers, bridges, pipelines, land leveling and earthmoving.
- Class B is for a structure built for the support, shelter and enclosure of people or property that needs at least two unrelated building trades; a B contractor may take a prime contract or a subcontract for framing or carpentry on its own.
- Class C is the specialty group: a contractor whose principal business uses one specialized building trade or craft, listed by CSLB trade by trade, such as C-36 Plumbing Contractor.
- A specialty contractor may use other crafts on a job only where that work is incidental and supplemental to the craft it is licensed for.
Worked contrast
| Class A, General Engineering | Fixed works requiring specialized engineering knowledge |
| Class B, General Building | A structure needing at least two unrelated building trades, or framing and carpentry on its own |
| Class C, Specialty | One specialized trade, listed by trade, for example C-36 Plumbing |
| Work outside the class held | Allowed only when it is incidental and supplemental to the licensed work |
Common mix-ups
- The two-unrelated-trades test belongs to Class B. It does not turn a set of unrelated specialty jobs into general building work.
- A single-trade job does not become general building work because it is on a house. The trade decides the class, not the building type.
- Incidental and supplemental is a test about how the work relates to the licensed craft. It is not a dollar allowance.
Source: Bus. & Prof. Code §7056 · Bus. & Prof. Code §7057(a) · Bus. & Prof. Code §7058(a) · Bus. & Prof. Code §7059(a) · CSLB, Licensing Classifications
The Qualifying Individual and the Experience Requirement
Who may qualify a license
The rule
A license stands on a qualifying individual who has at least four full years of journey-level, foreman, supervisor or contractor experience in the classification within the ten years before the application, and who has passed the required examinations.
When it applies — and when it does not
- The four years must be in the classification being applied for, and must fall in the ten years immediately before the application is filed.
- The qualifier appears on behalf of the entity: an owner or responsible managing employee for an individual, a general partner or RME for a partnership, an RMO or RME for a corporation.
- A responsible managing employee must be permanently employed by the applicant and actively engaged, which the statute defines as 32 hours a week or 80 percent of the hours the business operates, whichever is less.
- The qualifier is responsible for supervision and control of the employer's construction operations; lending a name is a cause for discipline and a misdemeanor.
Worked contrast
| Years of qualifying experience | At least four full years |
| Window the experience must fall in | The ten years immediately before the application |
| Actively engaged, for an RME | 32 hours a week, or 80 percent of the hours the business operates, whichever is less |
| Qualifying an additional firm | Needs common ownership of at least 20 percent, a subsidiary or joint venture, or the same majority of partners, officers or managers, and no more than three firms in any one-year period |
Common mix-ups
- Twenty percent and eighty percent are two different rules. Twenty percent is the common ownership needed to qualify a second firm; eighty percent is one half of the actively engaged test for an RME.
- Being an employee is not being qualified. A replacement qualifier must meet the experience and examination requirements in his or her own right.
- The experience belongs to the person, not to the company. The entity is the licensee, but the knowledge that supports the license is the qualifier's.
Source: CSLB, Before Applying for a License (exam application) · Bus. & Prof. Code §7068(c)(2)(B) · Bus. & Prof. Code §7068.1(a)-(b)
RMO vs. RME: Two Ways to Qualify a License
When the qualifier leaves
The rule
When the qualifying individual disassociates, the licensee or the qualifier must notify the Registrar in writing within 90 days, and the licensee has 90 days from the date of disassociation to replace the qualifier; miss either and the license is automatically suspended.
When it applies — and when it does not
- Both 90-day clocks run from the date of disassociation, not from the day the board finds out.
- If the notice is late, the suspension and the removal of the qualifier take effect on the date the written notice reaches the board's headquarters office.
- On a showing of good cause the Registrar may accept one further 90-day extension where the date is disputed, the qualifier has died, or an outside agency delayed the replacement application. For a disputed date or a death the total is capped at 180 days.
- Failing to notify within 90 days is itself grounds for disciplinary action, on top of the suspension.
Worked contrast
| Notify the Registrar of the disassociation | In writing, within 90 days of the date of disassociation |
| Replace the qualifier | Within 90 days of the date of disassociation |
| Missing either deadline | The license is automatically suspended, or the classification is removed |
| Death of a partner, partner disassociation, or dissolution | A separate 90-day notice rule that cancels or continues the entity's license, not the qualifier rule |
Common mix-ups
- Notifying is not replacing. Both are 90-day duties and both run from the same date.
- The suspension is automatic at the end of the 90 days. It is not a penalty the board must first decide to impose.
- The qualifier's 90 days sit in one section; the 90 days for a death, a partner's disassociation or a dissolution sit in another. Same number, different event.
Source: Bus. & Prof. Code §7068.2(a) · Bus. & Prof. Code §7068.2(c) · Bus. & Prof. Code §7076(c)
Eligible Business Entities
Who the license is issued to
The rule
A contractor license is issued to individual owners, partnerships, corporations, limited liability companies and participating tribes; a trust, an unincorporated association or an account is not one of them.
When it applies — and when it does not
- The entity is the licensee. The qualifying individual appears on the entity's behalf and is not the license holder.
- A corporation or limited liability company, foreign or domestic, must give the identification number issued by the Secretary of State, and every officer, member, responsible manager or director goes on the application as personnel of record.
- A limited liability company carries an extra financial condition: liability insurance with an aggregate limit of at least $1,000,000, rising by $100,000 for each person of record beyond five, capped at $5,000,000.
Worked contrast
| Eligible | Individual owner, partnership, corporation, limited liability company, participating tribe |
| Not eligible | A trust, and other arrangements that are not one of the listed entity types |
| Extra condition for an LLC | Liability insurance of at least $1,000,000 aggregate, up to $5,000,000 |
| Who holds the license | The entity, not the qualifying individual |
Common mix-ups
- A trust holds property. It is not one of the entity types a contractor license is issued to.
- A retirement account or an unincorporated association is not a business entity for this purpose, however the money inside it is used.
- The list was extended to participating tribes; it is no longer only the four familiar business forms.
Source: Bus. & Prof. Code §7065(b)(1) · Bus. & Prof. Code §7071.19(b)
Changing the Business Entity
A new entity needs a new license
The rule
No license is transferable to another person or entity under any circumstances, so when the business becomes a different legal entity that new entity files its own application, with its own $25,000 contractor bond, its own qualifier and its own workers' compensation coverage.
When it applies — and when it does not
- Incorporating, converting, or re-forming the business creates a new legal person, and filing with the Secretary of State does nothing to the license.
- The license number is a separate question from the license. On application, a number may be reissued in narrow cases, including to a corporation or LLC formed by an individual licensee who keeps more than 50 percent of the voting power.
- A partnership license is canceled by the disassociation of a general partner or by dissolution of the partnership, so a change in the partner lineup ends the old license.
- No examination is required of a qualifying individual who, within the five years before the application, personally passed the written examination for the same classification or served as qualifier for a licensee in good standing in that classification.
Worked contrast
| Transfer the license to the new entity | Not permitted under any circumstances |
| Reissue the same license number | Possible on application in narrow cases, such as a corporation formed by the individual licensee who keeps more than 50 percent of the voting power |
| Contractor bond the new entity must file | $25,000 |
| Re-examination of the same qualifier | Waived where the qualifier passed or qualified in the same classification within the previous five years |
Common mix-ups
- Filing articles of incorporation with the Secretary of State does not move the license. Two different agencies, two different records.
- Keeping the number is not keeping the license. A reissued number still sits on a new application by a new entity.
- The contractor bond is $25,000. Lower figures come from before the increase that took effect on January 1, 2023.
Source: Bus. & Prof. Code §7075.1(a) · Bus. & Prof. Code §7075.1(c)(5) · Bus. & Prof. Code §7071.6(a) · Bus. & Prof. Code §7065(d) · CSLB, Bond Requirements
Displaying the License Number; Advertising
Where the license number has to appear
The rule
A licensee must put the license number in all construction contracts, in subcontracts and calls for bid, and in every form of advertising, which includes a website or any post that solicits business on the Internet.
When it applies — and when it does not
- Every commercially registered vehicle used in the business must show the business name and license number, in print of at least 72-point font or three quarters of an inch high and wide.
- C-36 Plumbing, C-45 Sign and C-57 Well Drilling contractors show the business name, address and license number on each side of the vehicle in letters at least one and a half inches high.
- It is a misdemeanor to advertise for construction work covered by the license law without holding a valid license in the classification advertised, and advertising includes any electronic transmission.
- An unlicensed person may advertise only where the aggregate contract price for labor, material and all other items is under $1,000 and the advertisement states that the person is not licensed. Both conditions, not either one.
Worked contrast
| Contracts, subcontracts, calls for bid | License number required |
| All advertising, print and online alike | License number required |
| Each commercially registered vehicle | Business name and license number |
| An unlicensed person's advertisement | Only under $1,000 aggregate, and only if the ad says the person is not licensed |
Common mix-ups
- The rule reaches documents the public sees. Internal records such as payroll are not among them.
- Online advertising is not a lighter category than print. A website or a social post is advertising.
- For unlicensed advertising the offence is complete when the ad is placed. No contract and no work are needed.
Source: Bus. & Prof. Code §7030.5 · Bus. & Prof. Code §7029.6 · Bus. & Prof. Code §7027.1(a)-(b) · Bus. & Prof. Code §7027.2 · CSLB Fast Facts, Advertising Guidelines For Contractors
Fictitious Business Names and DBAs
The 90-day duty to report changes
The rule
A licensee must notify the Registrar in writing, on the board's form, within 90 days of any change to the information recorded on the license, and the statute names business address, personnel and business name among them.
When it applies — and when it does not
- The 90 days run from the change, not from the day the licensee gets round to it.
- If the notice is late, the change takes effect only on the date the written notification is received at the board's headquarters office.
- Failing to notify within the 90 days is grounds for disciplinary action in its own right.
- A name used with the public belongs on the CSLB license. Filing a fictitious business name with the county recorder is a separate local step and does not satisfy this duty.
Worked contrast
| Change of business address | Written notice to the Registrar within 90 days |
| Change of personnel or business name | The same 90-day duty |
| Notice filed late | The change takes effect the day the written notice is received |
| Registering a DBA with the county | A separate local filing that does not put the name on the license |
Common mix-ups
- Thirty days is the habit carried over from other licensing schemes. The window here is 90 days.
- A long window is not a soft one. Missing it is grounds for discipline and delays the effective date of the change.
- A county fictitious-name filing and a CSLB license record are two different registers.
Source: Bus. & Prof. Code §7083(a)-(c)
CSLB Discipline, Renewal, and the Unlicensed Bar
Renewal, discipline, and the unlicensed bar
The rule
A license expires two years from the last day of the month it was issued, the Registrar may cite, temporarily suspend or permanently revoke it, and a contractor who was not licensed at all times during the work cannot bring an action to collect for that work.
When it applies — and when it does not
- Renewing an unexpired license continues it for the following two-year period. An expired license may still be renewed within five years; after five years a new application is required.
- Abandonment of a project without legal excuse is a cause for disciplinary action, and the customer of an unlicensed contractor may sue to recover all compensation already paid.
- Citations are disclosed on the CSLB license lookup from issuance and for five years after the date of compliance, if no further discipline follows in that period.
- Minor work escapes the license law only when the aggregate price for labor, materials and all other items is under $1,000, the work needs no building permit, it is not part of a larger operation, and the person neither advertises as a contractor nor employs anyone to help.
Worked contrast
| License term | Two years from the last day of the month of issue |
| An expired license | Renewable within five years; after that, a new application |
| A citation on the public license record | Disclosed for five years after the date of compliance |
| Minor-work exemption | Under $1,000 for labor, materials and everything else, and no building permit required |
Common mix-ups
- The two-year term and the five-year renewal window are two different clocks. One is how long the license runs, the other is how long a dead license can be revived.
- The minor-work exemption is not a labor-only figure. It is the whole price, and it disappears the moment a permit is needed or a helper is hired.
- Finishing the work and going unpaid does not restore the right to sue for it. The license had to be in place while the work was performed.
Source: Bus. & Prof. Code §7140 · Bus. & Prof. Code §7141 · Bus. & Prof. Code §7090 · Bus. & Prof. Code §7107 · Bus. & Prof. Code §7031(a)-(b) · Bus. & Prof. Code §7048 · Bus. & Prof. Code §7124.6(e)(1)(A)
One section of the chapter
Business Organization and Licensing
The chapter opens here, in the same statute-checked text as the CSLB Law & Business eBook. 13% of the exam comes from this chapter; this is one of its 15 sections, whole.
Section 3 of 15
Part A — Who is a contractor, and who must be licensed
What legally counts as a "contractor"
The starting definition is deliberately broad. Under California law a contractor is anyone who, for others, builds, alters, repairs, adds to, or improves a building, road, or other structure — or who submits a bid to do so (B&P §§7025, 7026). The breadth is the point. It does not matter whether you are paid a lump sum, an hourly rate, or through a markup on materials; it does not matter whether you call yourself a "general contractor," a "handyman," or a "specialty trade." If the work improves real property and it is done for someone else, you are acting as a contractor, and you generally need a license.
Two misconceptions trip candidates here. The first is that only "general contractors" are contractors — in fact specialty trades and subcontractors are equally covered. The second is that being paid by the hour rather than by the project automatically takes you outside the definition — the method of payment alone does not decide status. But note the flip side: a bona fide employee who receives wages as sole compensation, does not customarily run an independently established business, and does not control the manner of performance is exempt under B&P §7053. So the real question is not hourly-vs-lump-sum; it is whether the person is a genuine wage employee or an independent operator holding themselves out as a contractor.
Why does this matter so much? Because almost every other rule on the exam — licensing, bonds, contracts, liens — only switches on once a person is legally a "contractor." Get the definition wrong and you will mislabel handymen, maintenance workers, and material suppliers all the way through the test.
California example. A homeowner in Bakersfield hires a worker at $45 an hour to reframe and re-tile a bathroom. The worker advertises his own remodeling services, supplies his own tools and helpers, sets his own methods, and works for many homeowners — he insists he is "just labor, paid hourly, not a contractor." On these facts the hourly rate does not save him: he is an independently established operator repairing and improving a structure for another, so he is acting as a contractor and needs the appropriate license. Change the facts — a genuine wage employee of a licensed contractor, directed and controlled, not holding out on his own — and §7053 would exempt that same bathroom work.
Where this page ends
The rest of this chapter is in the eBook
That was one section of Business Organization and Licensing, start to finish — nothing of it was cut. Covering this knowledge area, 13% of the exam, means the whole chapter: roughly 13,800 more words under the headings below, and the whole chapter is what the $24.99 eBook has.
- Introduction
- Learning objectives
- What legally counts as a "contractor"on this page
- The license requirement and unlicensed contracting as a misdemeanor
- The minor-work exemption — the $1,000 threshold
- The classifications: A, B, B-2, and C specialty
- Working outside your classification and subletting work
- Part C — Qualifying the license: the exam and the qualifying individual
- The contractor's license bond — $25,000
- The bond of the qualifying individual — $25,000
- LLC bonds and insurance — $100,000 worker bond and $1M liability
- Sole proprietor, partnership, corporation, LLC
- License application and renewal fees
- Advertising rules and unlicensed-advertising limits
- The required consumer notice
- The exemption catalog beyond §7048
- The owner-builder exemption — building on your own property (§7044)
- The rest of the exemption catalog (§§7040–7054.5) — headline level
- The application and eligibility pipeline
- Who can even apply — age, experience, and who signs off
- The examination — and when it is waived
…and 27 more sections — then this chapter’s “Key numbers & deadlines” sheet, its summary and its sources.
Frequently asked questions
A worker is paid by the hour to remodel a kitchen for a homeowner. Does the law treat them as a contractor?+
Under California law, a contractor is anyone who builds, alters, repairs, adds to, or improves a structure or its systems for others (or who submits a bid to do so). The definition is deliberately broad: it captures general and specialty trades, and it does not matter whether you are paid in a lump sum, hourly, or by material markup. If the work is done for someone else and involves improving real property, you are acting as a contractor and generally need a license.
What is the legal consequence when an unlicensed person sues a customer for nonpayment?+
You must hold a valid CSLB license before you contract for, bid on, or perform work that requires one. Contracting without a license is a misdemeanor, and an unlicensed contractor generally cannot use the courts to collect payment for the work (and can even be ordered to refund money already paid). Penalties escalate for repeat offenses and for unlicensed work in a declared disaster area.
A homeowner wants a single job done for a total of $950 in labor and materials. Is a contractor's license required?+
A license is not required for a small job where the total contract price for labor and materials combined is less than $1,000, provided the work is truly casual or minor, does NOT require a building permit, the person does NOT employ others to perform or assist with the work, and the person does not hold themselves out as a contractor (all conditions of §7048(a),(c)). The threshold is measured on the whole project — you cannot split one larger job into several sub-$1,000 contracts to dodge licensing. As of current law the figure is $1,000, not the older $500 that appears in stale study material.
Under what condition may a Class B general building contractor take a project that involves only a single trade?+
CSLB issues licenses by classification. Class A (general engineering) covers fixed works requiring specialized engineering knowledge, such as roads, bridges, and utilities. Class B (general building) covers structures that require at least two unrelated trades (framing/carpentry is the exception that a B can do alone). B-2 (residential remodeling) is a newer classification for residential remodel work. Class C licenses are specialty trades (for example C-10 electrical, C-36 plumbing), each limited to its own craft. You may only contract for and perform work within the classifications you hold.
A general building contractor's project includes electrical work they are not classified for. What is the compliant way to handle it?+
A contractor may take a prime contract that includes work outside their own classification only if they subcontract that portion to an appropriately licensed contractor, or the outside work is incidental and supplemental to the work of their classification. You cannot simply perform trades you are not licensed for. This is why a general building contractor assembles licensed specialty subs rather than self-performing every trade.
Educational summary, not legal advice — always confirm the current law with the official source (leginfo / CSLB).
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Last updated: September 2026
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