Try landscaping questions on estimating, irrigation, drainage, hardscape and planting. Get explanations for landscape math, lighting, pruning and jobsite safety.
A client wants a tree that will shade the west wall of the house in summer but let the sun warm that wall in winter. Which choice fits best?
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Answer 20 original practice questions on sod and pipe friction-loss math, shade tree choice, fence rules, tree protection and erosion control. Review questions on retaining wall drains, masonry bonds, hot-weather concrete, pond liners, French drains, valve wiring, lighting voltage drop, root care and pruning. Your result groups the sample by published CSLB topic area to show where planning, installation, maintenance or safety needs more attention.
The C-27 Landscaping Contractor exam draws from these published CSLB topic areas. The percentages show approximate exam weights; your sample result groups answers by the same areas.
Topic names and weights follow CSLB C-27 Landscaping Contractor study guides; your practice here uses original Test2Pro questions grouped by those areas.
The CSLB C-27 study guide applies to exams scheduled on or after July 1, 2026. It lists the references below. The exam is closed book, so study from them before test day.
CSLB C-27 study guide PDFRead California codes free onlineHow to use a CSLB study guide →
List from the CSLB C-27 study guide. You don't have to buy from the publishers it names: CSLB notes the books are sold elsewhere too.
Landscape work runs from grading and drainage to paving, irrigation, lighting and planting. This sample covers all six CSLB topic areas, so you can spot gaps outside the work you do most often, whether that is maintenance, installation or hardscape. Your result shows where to focus next; it does not predict whether you will pass. Full prep adds the complete question bank, saved history and readiness tracking.
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Download the 20 questions on this page as a free PDF with answers and explanations. No login needed. CSLB's free C-27 study guide lists the six exam areas, sample questions and the books to study. The current guide applies to exams scheduled on or after July 1, 2026, so check older material against it. Its link is below, under Sources and method.
It has six areas: Planning and Estimating (18%), Construction Preparation (12%), Hardscape Installation (21%), Drainage, Irrigation, Lighting, and Plant Installation (21%), Maintenance and Repair (11%) and Safety (17%). CSLB calls the percentages approximate. A crew that mostly installs plants or runs maintenance routes will still see paving, walls, lighting and estimating questions. Take this free test, see which areas you miss, and study those first.
CSLB's guide names the 2025 California Building and Plumbing Codes, the state's water efficient landscape ordinance, irrigation, lighting, landscape construction and arborist references, and the Cal/OSHA safety orders. The What to read block above lists each one with its publisher.
CSLB says some questions require math and provides a calculator. This sample asks you to turn a lawn area into sod rolls and to find the pressure lost along an irrigation main. Expect areas, volumes, flow and pressure. Write the units at every step: square feet to rolls, feet of pipe to psi, cubic feet to cubic yards.
Yes. C-27 is one of the 10 CSLB exams offered in Spanish, and so is Law & Business. If you ask CSLB for a Spanish translator for C-27, you take the Spanish version instead. Test2Pro also works in Spanish, and practice questions can be shown in 8 languages, including Spanish.
CSLB's C-27 description covers building, installing, maintaining and repairing landscape systems and facilities for gardens and the grounds around buildings, plus preparing and grading the land for them. That is why the exam mixes irrigation, drainage, lighting, planting, paving, walls and fences. For a specific job, read the full classification on CSLB's site.
Within each topic, note whether a missed answer came from math, a material or installation step, or a safety rule. Rework the calculations first, then review the unfamiliar installation and plant terms before trying another session.
Topic names and weights follow CSLB study guides; practice questions are original Test2Pro content.
Question bank last updated: November 2026.
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