25 Standards Every Inspector Should Know Course

Welcome to InterNACHI's free, online 25 Standards Every Inspector Should Know Course. 

The goal of this course is to teach 25 building standards and good practices related to inspecting systems and components in a residential dwelling. It is intended to raise the awareness and understanding of numerous building standards and good practices. Learning and understanding these standards will allow the inspector to effectively recognize defects in condition and installation. 

Upon successful completion, the student will be able to:
  • identify and describe the 25 systems and related components described in this course;
  • report to their clients defects observed at those 25 systems during a home inspection. 
Course includes:

  • 11,525 words;
  • inspection and writing assignment; 
  • research and writing assignment; 
  • 63 quiz questions in 6 quizzes;
  • 75-question final exam (drawn from a larger pool);
  • instant grading; and 
  • a downloadable, printable Certificate of Completion. 

You will learn the following: 

  • Electrical Panel
  • Electrical Subpanel
  • Roofing Underlayment
  • Glazing
  • Garage Firewall
  • Garage Drywall
  • Emergency Egress
  • Drainage
  • Anchorage
  • Notches and Holes
  • Masonry Chimney
  • Attic Access
  • Clothes Dryer
  • Standpipes
  • TPR Valve Discharge
  • Expansion Tank
  • Roof Vents
  • Traps
  • Panel Workspace
  • Electrical Service Conductors
  • Particleboard Sheathing
  • TPR and Explosive Power
  • FVIR
  • Island Fixture Venting
  • Shingle Roofs and High Winds

25 Standards Every Inspector Should Know Course

Course # 4504




Estimated hours for the average student

Academic Engagement

Reading online course material at 140 words per minute


Taking quizzes


Taking the exam


Conducting a directed and independent inspection study performed according to the Standards of Practice, including the development of an inspection report 


Submitting an inspection and writing assignment


Submitting a research and writing assignment




Studying & reviewing instructional material in preparation for taking quizzes and exam


Reading the downloaded student course book including taking the quizzes with the book


Reading, research, and studying related to completing the research and writing assignment
Studying and preparing for inspection processes according to a Standards of Practice, including capturing and storing digital images with a camera or device, making observations, evaluating conditions, deducing, formulating opinions, communicating observations in written form, attaining competency in performing inspections and using an inspection checklist or software and other inspection tools in producing a report.

Sub Total


Overall Total


37.0 hours / 0.7 SCH


And, in keeping with InterNACHI's commitment to Continuing Education, this course is open and free to all members, and can be taken again and again, without limit.

Reminder to members:  InterNACHI's Code of Ethics 1.10 requires that you comply with all government rules and licensing requirements of the jurisdiction where you conduct business.  InterNACHI's courses and Standards generally exceed the Standards of Practice that you are required to abide by locally. 
This course has been approved by:


Upon completion of this course and passing of the 75-question final exam (drawn from a larger pool), the student can download and print their own Certificate of Completion which is auto-generated in their own name. 

The student's (InterNACHI member's) information is recorded on InterNACHI's servers for membership compliance verification, and automatically logs completion into InterNACHI's online Continuing Education log.
Non-members may view only the first page of the course.
Members will need their username and password.  If you have forgotten your password, CLICK HERE (instant response) or email fastreply@internachi.org and request it (don't forget your name). 
InterNACHI... #1 in inspection education.
Some features which make InterNACHI's courses superior to existing continuing education options:
  • The course is free for all InterNACHI members.
  • The course is written in pure XHTML code for quick loading.  The course loads fine on old computers and loads fast, even with dial-up.
  • The course is designed using a hierarchal menu coupled with a sequential page navigation.  This provides the student with the option to easily repeat areas of weakness.
  • The course permits the student to start, stop and restart any part of the course as often as desired.
  • There are a variety of images within the course, including diagrams, illustrations and photos. 
  • The illustrations can be enlarged for clearer viewing by clicking on them.
  • The text is integrated into InterNACHI's Inspector Glossary.  Rolling over blue-colored terms provides their definition.
  • The final exam uses multiple-choice questions that reference the images. 
  • The course's final exam has numerous advantages over traditional exam systems:
    1. The course and final exam incorporate built-in intelligence which identifies and strengthens each student's unique subject weaknesses.
    2. Not only is each question weighted with regard to score, but each answer is weighted, as well as the correctness of each answer being weighted.
      1. Answers to easy questions are weighted such that the student is penalized, in terms of score, for answering incorrectly, but rewarded modestly for answering correctly.
      2. Answers to difficult questions are weighted such that the student is rewarded, in terms of score, for answering correctly, but not penalized for answering incorrectly.
      3. Answers to questions regarding basic safety, or questions every inspector should know the answer to, are weighted such that the student is severely penalized, in terms of score, for answering incorrectly.
  • Upon passing the final exam, the student can print out a Certificate of Completion which is auto-generated in their own name.
The student's (InterNACHI member's) information is recorded on InterNACHI's servers for membership compliance verification, and automatically logs completion into InterNACHI's online Continuing Education log.
For TEXAS Students:
Provider License #:10026
Course Approval #:31291