CA General Contractor common mistakes
CA General Contractor · Understand the traps and how to avoid them.
Calculating a mechanics lien or stop notice deadline from the invoice date, the date payment was due, or the date the claimant last spoke to the owner, instead of from the California Civil Code trigger events such as completion of the work of improvement or the claimant ceasing to furnish work.
California lien and stop notice timelines have different triggers depending on whether the claimant is a direct contractor, subcontractor, or supplier, and on whether the project is private or public; candidates often substitute a single remembered deadline from another state or from the federal Miller Act.
What to do instead
Build a one-page trigger table listing private vs. public work and direct contractor vs. subcontractor/supplier, then do 20 date-math drills where the fact pattern gives completion date, last furnishing date, and recording date.
Answering licensing questions as if a CSLB license is required only for jobs over $500 or as if the handyman exemption allows any small repair, without checking whether the work requires a specialty classification or whether the person is an employee.
The $500 threshold, the handyman exception, and the employee exemption interact, and exam distractors are written to blur the line between a minor repair and a project requiring a licensed contractor.
What to do instead
Memorize the $500 rule and the narrow handyman/employee exceptions, then classify 15 fact patterns by license required, classification needed, and penalty exposure.
On a public works payment problem, filing or recommending a mechanics lien against the public entity instead of using a stop notice or a payment bond claim.
Candidates carry private-work lien remedies into public-work questions even though public property is generally not subject to mechanics liens; the exam tests whether you can select the correct remedy for the ownership type.
What to do instead
Draw a two-branch flowchart: private work goes to lien/preliminary notice; public work goes to stop notice and payment bond. Practice identifying the remedy from the project owner's identity before reading the answer choices.
Choosing a federal OSHA general industry standard or a federal citation for a California construction safety question instead of the applicable Cal/OSHA Title 8 construction safety order.
Federal OSHA and Cal/OSHA overlap in topic but differ in citation and sometimes in requirement; candidates who studied general safety material default to the federal framework.
What to do instead
Study safety by Cal/OSHA Title 8 Construction Safety Orders and the Injury and Illness Prevention Program requirement; for each safety topic, write the California citation family and one California-specific requirement.
Classifying a worker as an independent contractor using the old common-law control test rather than California's ABC test when the question involves wage orders, workers' compensation, or unemployment insurance.
Older study material and general business knowledge still emphasize the common-law right-to-control test, while California uses the ABC test for many wage and employment determinations.
What to do instead
Memorize the three ABC prongs and practice applying them to fact patterns involving helpers, owner-operators, and specialty trades; note where the Borello multifactor test may still appear.
Treating all construction contracts as freely oral or, conversely, treating every change order as invalid unless written, without accounting for California home improvement contract form and notice requirements and the enforceability of oral changes in some commercial settings.
Contract formation rules differ by project type and consumer status, and candidates oversimplify to one rule instead of sorting by residential/commercial and consumer/non-consumer.
What to do instead
Create a contract-formation matrix: home improvement vs. commercial, written requirement, cancellation right, license disclosure, and change-order practice. Apply it to short fact patterns.
Confusing substantial completion with final completion and omitting closeout deliverables such as as-built drawings, warranties, final payment, and notice of completion when answering project administration questions.
Closeout is treated as a low-priority administrative topic, so candidates memorize completion definitions without linking them to payment, retainage release, and warranty start dates.
What to do instead
Build a closeout checklist that sequences punch list, substantial completion, notice of completion, final payment, retainage release, warranties, and as-builts; answer closeout questions by walking the checklist.
Making unit-conversion and quantity-takeoff errors in bid math, such as treating cubic feet as cubic yards, applying a waste factor in the wrong direction, or forgetting to convert inches to feet before multiplying.
The exam is timed and candidates rush arithmetic; estimating questions often embed unit traps that are not flagged in the prompt.
What to do instead
Use dimensional analysis on every takeoff: write the units beside each number and cancel them before calculating. Drill 15 problems converting square feet to square yards, cubic feet to cubic yards, and waste factors.
Evaluating contractor financial health by looking only at net profit on the income statement while ignoring cash flow, retainage, and overbilling or underbilling on a work-in-progress schedule.
Profit and cash are conflated, and candidates have not practiced reading a WIP schedule or recognizing that a profitable job can still create a cash squeeze.
What to do instead
Practice reading a simple WIP schedule and compute over/underbilling, projected gross profit, and cash position. For each financial fact pattern, identify whether the question is about profitability, liquidity, or solvency.
Answering plan and specification questions from a single drawing note or from memory of typical details without checking the contract document precedence clause and addenda order.
Candidates treat drawings and specifications as interchangeable and do not apply the hierarchy of contract documents when conflicts appear in the fact pattern.
What to do instead
Memorize the typical order of precedence and practice conflict questions by explicitly ranking the documents named in the prompt before selecting an answer.