Crawl Space Entry - When is Tight Too Tight?

Home Inspector with HABITEC Home and Building Inspections, LLC
Confined Spaces - When is Tight Too Tight?

Recently I had a REALTOR ask if there were circumstances when an Inspector would not crawl through the entire crawl space.  I explained that sometimes we don't go everywhere in the crawl space because it simply is not possible or safe.  I went on to explain that access to some areas of the crawl space may be blocked by debris, HVAC ductwork and/or tight spacing.  That did not seem to be the answer she was looking for.  But it got me to thinking, when is tight too tight

Sometimes the crawl space entry itself is the problem.  The minimum recommended dimensions for a crawl space entry are 24" high and 30" wide.  Remember a home inspector or technician also has to carry tools with them when they enter a crawl space.  Look at the picture below.  In this case the Inspector would literally have to exhale deeply in order to make the entry work.  Clearly too small for this big guy.

But a slightly skinnier Inspector might make it, like the fellow below.

So the decision to enter a space or not is a judgement call by the Inspector.  Certainly, if the Inspector has to exhale to enter a crawl space, good judgement would be for him to decline the entry.

Some general safety rules of crawl space entry are as follows.  These rules can be applied to Inspectors and home owners alike.

1.  Take two flashlights and a cell phone.  If the first light loses power, you'll have the second to find your way out.  The cell phone comes in very handy if you get trapped or hurt.  Its also another source of light, albeit a poor one.

2.  Make sure someone knows you will be in a crawl space and approximately when you should be out of the crawl space.  That way if you become incapacitated hopefully someone will realize you are missing before it is too late.

3.  Do not crawl over ductwork, standing water or electrical lines.  If you have to crawl over ductwork, move components or take in a breath to enter a space, it is too close to be entered. 

4.  Be alert to Confined Spaces that should not be entered.  Do not force your way into areas that are too close.  NACHI has an excellent Continuing Education course about Home Inspector safety that deals with this issue.  According to NACHI and the OSHA website, a "confined space," as defined in OSHA's General Industry Standard (29.CFR.1910), is a space that:

 a.  is large enough and is so configured that an employee can bodily enter and perform assigned work;

 b.  has limited or restricted means for entry or exit (for example:  tanks, vessels, silos, bins, hoppers, vaults, pits, etc.); and

 c.  is not designed for continuous employee occupancy.

NOTE:  OSHA defines a crawl space as a non-permit required confined space.  Therefore, a Home Inspector can enter a crawl space without a permit but according to item 4.a above, if the space is not large enough to enter and perform assigned work or the employee [Home Inspector] cannot perform assigned work [because the space is too tight], this space should not be entered.  In Tennessee, the TN Home Inspection Rules as established by the TN Department of Commerce, Rules for Home Inspectors, Chapter 0780-5-12.10, Standards of Practice, item 6.b.3, states that "Home Inspectors are not required to enter any area or perform any procedure that may damage the property or its components or be dangerous to or adversely affect the health or safety of the home inspector or other persons." 

5.  Be alert to strange odors that can be a hint of problems.  Obviously, if you smell gas, leave immediately.  Crawl space odors like watermelon indicate the presence of snakes.  If you observe snakes or evidence of snakes, or any other animal or pest that may be a threat to your health, leave the crawl space immediately.  Make a note on the report.

6.  Use a fanny pack to carry small items in the crawl space, like your cell phone and equipment testers you may need.

7.  Wear gloves and breathing protection.  The gloves protect your hand somewhat when you are searching around in the dark and the breathing protection protects you from all the dust and insulation you can breathe in.

So hey, let's be careful out there. If you would like to comment on this article please email to

Thank you,

Richard Acree


Comments in this blog posting are the copyrighted intellectual property of Richard Acree, President, HABITEC Home and Building Inspections, LLC, and contributing members of the Active Rain Real Estate network, and are intended to educate and otherwise assist home owners, sellers and buyers, building owners, sellers and buyers, realtors, real estate investors, property managers, and lenders in the process of owning, buying or selling homes or commercial buildings.  HABITEC is a residential (home) and commercial building inspection company serving Middle Tennessee including Nashville, Brentwood, Franklin, Murfreesboro, Smyrna, Mt. Juliet, Hendersonville, Dickson, Belle Meade, Columbia, Spring Hill and more!  In addition to building inspections HABITEC offers Environmental Services for mold assessments, radon testing and water quality analysis.  Additional information about HABITEC can be found on our website at, or call 615-376-2753. 

Richard Acree is the author of the HABITEC Home and Building Inspections ActiveRain Blog and founder of the ActiveRain Group Tennessee Home and Building Inspectors.  All are welcome to join and see more blogs like this one.  You can also join HABITEC on Facebook or Linked . 


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Atlanta's Home Inspector, David Lelak IHI Home Inspections
IHI Home Inspections 404-788-2581 - Canton, GA
Experience the IHI Difference

Great post and pictures! We especially love the Tyvek suit :)

Sep 15, 2011 04:49 AM #1
Robert Dirienzo
HABITEC Home and Building Inspections, LLC - Franklin, TN
Home Inspections - Nashville TN

Hello David and Bonnie,

Yes, we try to keep up with the latest in Home Inspector accessories like the ultra-sheik tyvek suit!  Totally cool!  Thanks,



Sep 15, 2011 02:46 PM #2
Hank Spinnler
Harmony Home Inspection Services of GA - Hoschton, GA
Atlanta Home Inspector

I hope there is no central HVAC unit in there with a filter that requires periodic changing.

Oct 12, 2011 01:49 PM #3
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Robert Dirienzo

Home Inspections - Nashville TN
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