Advanced Inspection of Crawlspaces Course

Welcome to InterNACHI's free, online "Advanced Inspection of Crawlspaces Course." This course is provided by our accredited college at

Take the free online course now. 


The goal of this course is to teach students how to inspect crawlspaces of homes.


Upon successful completion, the student will be able to inspect the underfloor crawlspace structure of a residential building, including:

  • properly using personal protection equipment;
  • following InterNACHI Standards of Practice;
  • applying an inspection checklist;
  • writing report narratives using descriptive language; and
  • recognizing defects. 

The student will watch and learn how a Certified Master Inspector® performs two on-site inspections of actual crawlspaces and how over 50 defects are discovered and reported.  The course document includes suggested narratives and language that can be used in writing an inspection report.   

Course includes:

  • 24.0 InterNACHI® CE credit hours;
  • 27,104 words in the course;
  • 27,104-word course textbook;
  • 1.2 hours of instructional video;
  • technical illustrations and inspection images;
  • inspection and writing assignment;
  • research and writing assignment;
  • 60-question final exam (drawn from a larger pool);
  • instant grading;
  • a downloadable, printable Certificate of Completion.

Advanced Inspection of Crawlspaces Course
Course #3410, Student Catalog 

Student WorkTime CalculationEstimated Clock Hour Time for the Average Student
Attendance for "Seat Time" 1# of minutes of student attendance / 508.9
Participation in Learning Activities 2# of minutes of online student participation / 500.5
Interactivity 3# of minutes of student interactivity / 500.5
Reading the Course Text 4# of words in the course / 100 words per minute / 503.8
Reading the Course Textbook 5# of words in the book / 100 words per minute / 50 / 21.9
Academic Engagement 6# of words in the course / 100 / 500.5
Direct Communication 7# of minutes of communication / 500.5
Instructional Video Learning 8# of minutes of video / 501.2
Reinforcement Q & A  9# of questions X 1.85 / 500.0
Writing Assignment of the Inspection  102.0 hours per assignment2.0
Writing Assignment of the Research  113.0 hours per assignment3.0
Academic Activities for an Inspection  124.0 hours for each inspection assignment4.0
Performing an Inspection  136.0 hours for each inspection6.0
Total clock hours
24.0 clock hours
24.0 InterNACHI CE Hours
2.4 CEU


In keeping with InterNACHI's commitment to Continuing Education, this course is open and free to all members and can be taken repeatedly 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 60-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 and request it (don't forget your name).  

InterNACHI... #1 in inspection education.

Other inspection courses.

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 quizzes and final exam have numerous advantages over traditional exam systems:
    1. The course, quizzes 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.

Other approved and accredited inspection courses.