How to Pass the California C-15 Flooring and Floor Covering Contractor Exam
Quick answer: Study substrate-first: learn to evaluate and prepare the subfloor, then practice each flooring family while keeping estimating and safety in every cycle.
Current C-15 Flooring exam outline
Official outline used: current CSLB C-15 Flooring study guide, effective for examinations scheduled on or after January 1, 2026. CSLB describes the percentages as approximate.
| Official section | Approximate weight | What to review |
|---|---|---|
| Planning and Estimating | 21% | Plans, materials, calculations, and job-site readiness. |
| Subfloor Evaluation, Preparation, and Material Acclimation | 20% | Removal, subfloors, moisture, underlayments, acclimation, and mitigation. |
| Carpet Installation | 12% | Layout, cutting, seaming, installation, and trim. |
| Resilient and Rubber Flooring Installation | 12% | Layout, adhesives, rolling, sealing, and transitions. |
| Laminate Flooring Installation | 8% | Layout, installation, trim, and transitions. |
| Wood Flooring Installation | 10% | Moisture testing, layout, installation, sanding, and finishing. |
| Concrete Treatment and Synthetic Application | 4% | Dust control, synthetic finishes, and surface preparation. |
| Safety | 13% | Personal and job safety, tools, and product handling and disposal. |
A six-week C-15 Flooring study plan
Peerless suggestion—not a CSLB or PSI requirement: adjust this schedule to your baseline and available time. No schedule can guarantee a passing result.
- Week 1: Study plans, materials, estimating, and job-site readiness.
- Week 2: Study removal, subfloors, moisture testing, underlayments, acclimation, and mitigation.
- Week 3: Compare carpet with resilient and rubber workflows.
- Week 4: Compare laminate and wood, including layout, transitions, moisture, sanding, and finishing.
- Week 5: Review concrete treatment, synthetic application, tools, product handling, and safety.
- Week 6: Work mixed substrate-to-finish cases with separate error logs by topic.
Worked material-estimating example
A 12 ft × 15 ft room has 180 square feet. If an illustrative estimate adds 10% for waste, 180 × 1.10 = 198 square feet. A real factor must match the material, layout, and project requirements.
C-15 Flooring study resources
- Free C-15 Flooring practice test — start without signup; email and marketing-email consent are required to view results.
- C-15 study guide
- C-15 online practice exam
- C-15 study guide and practice-exam bundle
- C-15 and Law & Business bundle
- Official CSLB C-15 Flooring classification
Do not leave Law & Business until last
Applicants for an original California contractor license generally need the trade examination and Law & Business. Keep a separate study rotation and error log for the business exam.
California exam prep by region
These classifications are statewide. For regional scheduling guidance, see San Diego contractor exam prep, Bay Area contractor exam prep, or Sacramento contractor exam prep.
Frequently asked questions
Which C-15 sections carry the most weight?
Planning and Estimating is approximately 21%, and Subfloor Evaluation, Preparation, and Material Acclimation is approximately 20%.
Why organize study by substrate and material family?
The outline separates substrate work from carpet, resilient and rubber, laminate, wood, concrete treatment, and safety.
Can I begin the free practice test without creating an account?
You can start without signup. An email address and marketing-email consent are required to view the result.
Is Peerless affiliated with CSLB?
No. Peerless is an independent exam-preparation provider and is not affiliated with, endorsed by, or sponsored by CSLB.
Sources
Peerless Institute is independent and is not affiliated with, endorsed by, or sponsored by CSLB. Verify current exam requirements with CSLB.