Free practice test — 12 questions with full explanations
Original CraftPATH practice questions. These are not real exam questions. Every answer includes the reasoning, why each wrong option fails, the code area it comes from, and the misconception it targets.
Question 1. A California B General Building contractor may take a prime contract only when the project requires:
Scope of the B Classification · Medium · Objective: Define the two-trade rule.
- A. Any single trade
- B. At least two unrelated building trades or crafts (correct)
- C. Only framing work
- D. Only work under $500
Correct answer: B. At least two unrelated building trades or crafts
Why this is right: The B classification is defined around projects requiring in excess of two unrelated building trades or crafts, other than framing or carpentry, unless the contractor also holds the appropriate specialty classification.
Why the other options are wrong:
- A. Any single trade — A single-trade project belongs to the specialty contractor holding that classification.
- C. Only framing work — Framing and carpentry alone do not satisfy the unrelated-trades test.
- D. Only work under $500 — The minor work exemption threshold is a separate concept and does not define the B scope.
Where this shows up on the job: Bidding a single-trade job on a B license is one of the most common CSLB enforcement issues and can void your right to collect payment.
Code reference: California Business and Professions Code, Contractors State License Law; CSLB classification descriptions
Common misconception: Believing a B license lets you self-perform or prime any job of any kind.
Question 2. The CSLB minor work exemption applies to projects where the combined value of labor, materials, and all other costs is less than:
Scope of the B Classification · Easy · Objective: Apply the minor work exemption.
- A. $100
- B. $500 (correct)
- C. $1,000
- D. $5,000
Correct answer: B. $500
Why this is right: Work with a combined labor and material value under $500 may be performed without a license, provided it is not part of a larger project and the person does not advertise as licensed.
Why the other options are wrong:
- A. $100 — $100 is below the statutory threshold.
- C. $1,000 — $1,000 exceeds the exemption amount.
- D. $5,000 — $5,000 is far above the exemption and would clearly require licensure.
Where this shows up on the job: Splitting a larger job into sub-$500 invoices to avoid licensure is explicitly prohibited and is a standard sting scenario.
Code reference: California Business and Professions Code Section 7048
Common misconception: Thinking the exemption can be applied repeatedly to segments of one larger project.
Question 3. A continuous concrete footing detail calls for two #4 bars with 3 inches of clear cover to earth. The 3 inches refers to:
Foundations and Framing · Hard · Objective: Read a footing detail.
- A. The distance between the two bars
- B. The distance from the bar surface to the face of the concrete against earth (correct)
- C. The depth of the footing below grade
- D. The lap length at splices
Correct answer: B. The distance from the bar surface to the face of the concrete against earth
Why this is right: Clear cover is the distance from the outer surface of the reinforcing steel to the nearest concrete face, and concrete cast against and permanently exposed to earth requires the largest cover for corrosion protection.
Why the other options are wrong:
- A. The distance between the two bars — Bar spacing is a separate dimension called out independently.
- C. The depth of the footing below grade — Footing depth below grade is a frost and bearing requirement, not cover.
- D. The lap length at splices — Lap length is a splice requirement measured along the bar.
Where this shows up on the job: Chairing rebar off the dirt is the practical version of this rule, and a footing inspection fails fast when the steel is lying in the mud.
Code reference: California Building Code, concrete cover requirements (ACI-based)
Common misconception: Measuring cover from the center of the bar instead of its outer surface.
Question 4. Overdriving sheathing nails so the head breaks the face veneer of the plywood primarily reduces:
Foundations and Framing · Medium · Objective: Apply shear wall nailing.
- A. Nail withdrawal only
- B. The shear capacity of the wall (correct)
- C. Fire resistance
- D. Thermal performance
Correct answer: B. The shear capacity of the wall
Why this is right: Shear wall capacity depends on the nail bearing against solid panel material. Overdriven nails that crush through the face ply lose bearing area and reduce the assembly's rated shear value.
Why the other options are wrong:
- A. Nail withdrawal only — Withdrawal matters for some connections, but shear panels are governed by lateral bearing.
- C. Fire resistance — Nail depth does not change the fire rating of the assembly.
- D. Thermal performance — Sheathing attachment has no meaningful effect on thermal performance.
Where this shows up on the job: This is the single most common reason a shear wall inspection fails in California, and the fix is adding nails, not driving the existing ones deeper.
Code reference: California Building Code, wood shear wall provisions; APA panel installation guidance
Common misconception: Assuming a flush or countersunk nail is a better nail.
Question 5. Weather-resistive barrier and flashing must be lapped so that:
Building Envelope and Finishes · Medium · Objective: Apply flashing principles.
- A. Upper layers lap over lower layers, shedding water outward and downward (correct)
- B. Lower layers lap over upper layers for a tighter seal
- C. All laps are sealed with caulk instead of overlapping
- D. Laps are unnecessary behind stucco
Correct answer: A. Upper layers lap over lower layers, shedding water outward and downward
Why this is right: Water management works by gravity and shingle action: each higher course laps over the one below so water is directed out of the assembly rather than behind it.
Why the other options are wrong:
- B. Lower layers lap over upper layers for a tighter seal — Reverse lapping directs water into the wall and is a classic construction defect.
- C. All laps are sealed with caulk instead of overlapping — Caulk is a supplement, never a substitute for correct lapping.
- D. Laps are unnecessary behind stucco — Stucco assemblies specifically require a properly lapped weather-resistive barrier.
Where this shows up on the job: Reverse-lapped window head flashing is one of the most litigated residential construction defects in California.
Code reference: California Building Code, weather protection and flashing provisions
Common misconception: Relying on sealant to make up for an incorrectly lapped assembly.
Question 6. For a California residential addition, compliance with the energy standards is typically demonstrated by:
Building Envelope and Finishes · Medium · Objective: Apply Title 24 envelope rules.
- A. No documentation is required for additions
- B. The prescriptive package or a performance approach documented on the required compliance forms (correct)
- C. Only a contractor statement in the contract
- D. A local inspector's verbal approval
Correct answer: B. The prescriptive package or a performance approach documented on the required compliance forms
Why this is right: Title 24, Part 6 compliance is shown either by meeting the prescriptive package for the climate zone or by a performance calculation, documented on the required certificate of compliance forms and verified where HERS verification applies.
Why the other options are wrong:
- A. No documentation is required for additions — Additions and alterations are covered by the energy standards.
- C. Only a contractor statement in the contract — A contract statement is not a compliance document.
- D. A local inspector's verbal approval — Verbal approval does not satisfy the documentation requirement.
Where this shows up on the job: Missing compliance forms and unscheduled HERS testing are among the top reasons California residential finals get delayed.
Code reference: California Energy Code, Title 24, Part 6
Common misconception: Assuming the energy standards apply only to new construction.
Question 7. A slab is 30 feet by 40 feet and 4 inches thick. Ignoring waste, the concrete required is approximately:
Planning and Estimating · Hard · Objective: Compute a materials quantity.
- A. 7.4 cubic yards
- B. 12.3 cubic yards
- C. 14.8 cubic yards (correct)
- D. 20.0 cubic yards
Correct answer: C. 14.8 cubic yards
Why this is right: Volume equals 30 x 40 x (4/12) = 400 cubic feet. Dividing by 27 cubic feet per cubic yard gives about 14.8 cubic yards.
Why the other options are wrong:
- A. 7.4 cubic yards — 7.4 cubic yards corresponds to a 2-inch slab.
- B. 12.3 cubic yards — 12.3 cubic yards would correspond to a smaller area or thinner slab.
- D. 20.0 cubic yards — 20.0 cubic yards overstates the volume by roughly a third.
Where this shows up on the job: Under-ordering concrete on a monolithic pour means a cold joint you did not design, which is why the takeoff and the waste factor both matter.
Code reference: Standard construction quantity takeoff; CSLB B trade exam content outline
Common misconception: Forgetting to convert the thickness from inches to feet before dividing by 27.
Question 8. On a residential project, rough inspections for framing, electrical, plumbing, and mechanical are generally scheduled:
Planning and Estimating · Medium · Objective: Sequence a project.
- A. Before framing begins
- B. After rough trades are installed but before insulation and drywall cover them (correct)
- C. After drywall is hung
- D. Only at final inspection
Correct answer: B. After rough trades are installed but before insulation and drywall cover them
Why this is right: Rough inspections happen when the work is complete and still visible, which is after the trades are installed and before insulation and wall covering conceal them.
Why the other options are wrong:
- A. Before framing begins — There is nothing to inspect before framing.
- C. After drywall is hung — Covering work before inspection typically requires removal to expose it.
- D. Only at final inspection — A final inspection does not substitute for required rough inspections.
Where this shows up on the job: Hanging drywall over uninspected rough work is the most expensive scheduling mistake a general contractor can make on a small job.
Code reference: California Building Code, inspection requirements; local permit conditions
Common misconception: Treating inspections as paperwork rather than as hold points in the schedule.
Question 9. Employees working in a trench must be protected by sloping, shoring, or shielding when the trench depth reaches:
Safety · Medium · Objective: Apply excavation protection.
- A. 2 feet
- B. 3 feet
- C. 5 feet (correct)
- D. 10 feet
Correct answer: C. 5 feet
Why this is right: Protective systems are required for trenches 5 feet deep or greater, and at any depth if a competent person identifies a potential cave-in hazard.
Why the other options are wrong:
- A. 2 feet — Two feet is well below the regulatory trigger.
- B. 3 feet — Three feet is not the regulatory threshold.
- D. 10 feet — Waiting until 10 feet leaves workers unprotected through the most common fatal depth range.
Where this shows up on the job: Trench collapse kills more construction workers per exposure hour than almost any other hazard, and a cubic yard of soil weighs roughly as much as a car.
Code reference: Cal/OSHA excavation requirements, California Code of Regulations Title 8
Common misconception: Believing shallow trenches are inherently safe regardless of soil conditions.
Question 10. Workplace safety on California construction sites is enforced primarily by:
Safety · Easy · Objective: Identify Cal/OSHA jurisdiction.
- A. Federal OSHA directly
- B. Cal/OSHA, the state plan program (correct)
- C. The Contractors State License Board
- D. The local fire marshal
Correct answer: B. Cal/OSHA, the state plan program
Why this is right: California operates an OSHA-approved state plan, so Cal/OSHA within the Department of Industrial Relations enforces construction safety and can set standards stricter than the federal minimums.
Why the other options are wrong:
- A. Federal OSHA directly — Federal OSHA defers to approved state plans for most private-sector enforcement in California.
- C. The Contractors State License Board — CSLB regulates licensure and contracting conduct, not workplace safety enforcement.
- D. The local fire marshal — Fire marshals enforce fire code, not general construction safety.
Where this shows up on the job: California's heat illness and fall protection rules are stricter than the federal baseline, which surprises contractors moving in from other states.
Code reference: California Code of Regulations, Title 8; California Division of Occupational Safety and Health
Common misconception: Assuming federal OSHA standards are the ceiling for compliance in California.
Question 11. For a California home improvement contract, the down payment may not exceed:
Law and Business · Medium · Objective: Apply home improvement contract rules.
- A. 10 percent of the contract price or $1,000, whichever is less (correct)
- B. 25 percent of the contract price
- C. 50 percent of the contract price
- D. There is no limit if the customer agrees
Correct answer: A. 10 percent of the contract price or $1,000, whichever is less
Why this is right: Contractors State License Law limits the down payment on a home improvement contract to 10 percent of the contract price or $1,000, whichever is less.
Why the other options are wrong:
- B. 25 percent of the contract price — Twenty-five percent far exceeds the statutory limit.
- C. 50 percent of the contract price — Fifty percent is a serious violation and a common complaint pattern.
- D. There is no limit if the customer agrees — The limit applies regardless of customer consent.
Where this shows up on the job: Down payment violations are among the most frequent grounds for CSLB discipline, and they cannot be waived by a clause in the contract.
Code reference: California Business and Professions Code, home improvement contract provisions
Common misconception: Assuming a signed agreement can override a statutory consumer protection limit.
Question 12. A California preliminary notice is important because it:
Law and Business · Medium · Objective: Understand mechanics lien timing.
- A. Guarantees payment
- B. Preserves the right to record a mechanics lien or make a bond or stop payment claim (correct)
- C. Replaces the need for a written contract
- D. Extends the license expiration date
Correct answer: B. Preserves the right to record a mechanics lien or make a bond or stop payment claim
Why this is right: Serving a preliminary notice within the statutory period preserves the claimant's remedies, including the right to record a mechanics lien.
Why the other options are wrong:
- A. Guarantees payment — No notice guarantees payment; it preserves a remedy.
- C. Replaces the need for a written contract — A preliminary notice does not substitute for a written contract.
- D. Extends the license expiration date — It has no effect on license renewal.
Where this shows up on the job: Subcontractors and suppliers who miss the 20-day window routinely lose their lien rights entirely, which is why lien law shows up on the Law and Business exam.
Code reference: California Civil Code, mechanics lien and preliminary notice provisions
Common misconception: Waiting until payment is late to think about preliminary notice deadlines.
How to study for the CSLB B general building contractor exam
Start with what a B license actually authorizes
More candidates get tripped up by scope than by construction knowledge. Learn the unrelated-trades test cold: a B contractor takes prime contracts on projects requiring more than two unrelated building trades or crafts, other than framing or carpentry, and cannot take a single-trade contract unless it also holds that specialty classification. Understand the framing and carpentry carve-out, when you must subcontract to a specialty licensee, and the minor work exemption and its limits.
Treat the Law and Business exam as half the job
Every CSLB applicant sits Law and Business in addition to the trade exam, and it is the one most tradespeople underestimate. Contracts and the notices they must contain, the home improvement down payment limit, mechanics liens and preliminary notice deadlines, bonds, workers compensation, payroll and employment basics, and CSLB discipline are all fair game. This material is pure study and pure points.
Build a working knowledge of the code chapters you actually touch
You do not need to memorize the California Building Code, but you do need fluency in the parts a general contractor coordinates: foundations and concrete cover, wood framing and shear wall requirements, weather protection and flashing, roofing, stairs and guards, and egress. Pair that with Title 24 energy compliance, since documentation and HERS verification now drive schedule on nearly every California project.
Practice takeoff arithmetic until conversions are automatic
Estimating questions are quick points if unit conversion never slows you down. Practice concrete volume in cubic yards, framing lumber and sheathing counts, roofing squares, and waste factors. The most common error is failing to convert inches to feet before dividing by 27, so drill that specific step until it is reflexive.
Study Cal/OSHA as California, not as federal OSHA
California runs an approved state plan with requirements that exceed the federal baseline, including heat illness prevention and an injury and illness prevention program. Know the trigger depths and heights for excavation protection and fall protection, scaffold requirements, and who the competent person is on a jobsite. Safety questions are written for recall, not judgment.
Run a six-week plan and take both exams seriously
Weeks one and two: Law and Business, studied from the statute and CSLB study guides. Week three: scope, contracts, and project administration. Week four: foundations, framing, and structural connections. Week five: envelope, finishes, and Title 24. Week six: estimating, safety, and full-length timed mixed sets under exam conditions.
Frequently asked questions
What can a California B general building contractor legally do?
A B contractor takes prime contracts on structures requiring more than two unrelated building trades or crafts, other than framing or carpentry. Single-trade work requires the matching specialty classification or must be subcontracted to a licensee who holds it.
How many exams do I have to pass?
Two. Every CSLB applicant takes the Law and Business examination, plus the B trade examination for the general building classification.
How many questions are on the CSLB B exam?
CSLB does not publish item counts or passing scores for its examinations. We mark both pending rather than repeating unsourced figures. Confirm details with CSLB when you schedule.
What experience do I need to apply?
CSLB generally requires four years of journey-level or higher experience within the preceding ten years, certified by a qualified person. Certain education and apprenticeship credit may apply, so confirm with CSLB.
What is the home improvement down payment limit in California?
The down payment on a home improvement contract may not exceed 10 percent of the contract price or $1,000, whichever is less. This is a frequent source of CSLB discipline.
Can I do small jobs without a license?
Work under $500 in combined labor and material cost may fall under the minor work exemption, but only if it is not part of a larger project and you do not advertise as licensed. Splitting a bigger job into small invoices is prohibited.
Are these real CSLB exam questions?
No. Every question here is original CraftPATH material written to the same subject areas the exam covers. We do not reproduce live examination content.