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CR-21 Landscaping and Irrigation Systems

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Arizona Registrar of Contractors
1700 W. Washington St, Suite 105
Phoenix, AZ  85007
Phone: (602) 542-1525
Licensing Link

Exam Administrator

PSI Licensure: Certification
3210 E. Tropicana
Las Vegas, NV  89121
Phone:  (800) 733-9267
Candidate Bulletin Link
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Exam Type


Exam Content

Subject Areas# of
Irrigation Systems15
Trees and Shrubs10
Grass and Groundcover8
Grading and Drainage6
Soils, Amendments, and Chemicals10
Desert Plants5
Low Voltage Electricity5
Rules and Regulations3
General Knowledge5
Total number of test questions:
Time allowed (minutes):

In addition to the trade-specific examination, you may be required to pass the Business and Law Exam offered by PSI or take an "approved" Business and Law course

Books Allowed in the Exam

Code of Federal Regulations, 29 CFR Part 1926 (OSHA), GPO [or] (OSHA) Selections by PSI
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Books NOT Allowed in the Exam

Arizona 811 - Excavator Guide, Arizona Blue Stake
PDF File Link
Arizona Administrative Code, Title 4, Chapter 9: AZROC, 2017 (Revises 2009)
PDF File Link
Arizona Workmanship Standards for Licensed Contractors, 2009, AZROC
PDF File Link
Fences and Retaining Walls, 1996 (Revises 1990), William McElroy
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Landscaping Principles & Practices, 7th Edition, 2009 (Revises 6th Edition), Jack Ingels
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Landscape Construction, 3rd Edition, 2011, David Sauter
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Simplified Irrigation Design, 2nd Edition, 1995, Pete Melby
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Sustainable Landscape Management - Standards for Landscape Care in the Desert Southwest, 1st Edition, 2009, Janet L. Waibel
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Available Study Materials
Individual Book Title
Practice Exam
(price variable)

The price is dependent on how many sets of questions you order and their content.

The file(s) you receive contain sample exam questions for the book title(s) above highlighted (light green) that you select in your order.

A 15% discount applies when ordering TWO (2) OR MORE BOOK TITLES.

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