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NRPP Certified

NRPP is recognized as the leading certification program for radon professionals, requiring bi-annual documentation of competence, expertise and performance to demonstrate skill, knowledge and professionalism.

Giving you Peace of Mind

Radon is a naturally occurring gas that is emitted from the earth and found nearly everywhere in the United States.

Radon gas is second only to smoking as a cause of lung cancer.

Radon is a particular issue in the Rocky Mountains where we see a higher level of radon concentrations than elsewhere in the country.

Radon testing is advised by the EPA to be conducted during all home transactions. Elevated levels of the gas can be found in any type of foundation. In fact, radon gas is present indoor or out, but concentrates in the more tightly constructed homes being built in the last 50 years. Testing by a trained and certified individual is necessary. There are protocols that are provided by the EPA and the National Environmental Health Association’s National Radon Proficiency Program.

Proper testing in a real estate transaction requires the home be tested during “winter living conditions” where the windows and doors are closed for 12-hours prior to the testing and that the home remains closed (except for normal entry and exit) during the 48-hour testing period. This may be inconvenient, but it is the only possible method to provide a valid test.

Mountain Home Inspection utilizes highly reliable continuous radon monitors from Airthings and the Rad Elec E-perm testing system. Radon tests are passive and pose no concern to occupants in the home. Mountain Home Inspection will not perform any mitigation, remaining objective when performing these tests.

Home Inspection

why should you have your home inspected?

The home inspection is the opportunity for the buyer of a property to hire a licensed professional to inspect the home and to provide a report as to the condition of the home on the day of the inspection. This step in your buying process is invaluable. You will gain a better understanding of how the home may have been maintained and cared for, what pressing improvements should be made, how safe the home will be, and ultimately if it is the right home for you.



In a best case scenario the buyer would be present for the home inspection. It is a better inspection when the home inspector can demonstrate the items he will include in the report, both positive and negative. However, we know that is not always possible. If you are unable to attend, please read your report carefully and review it with your real estate professional before moving forward with your purchase. We are also happy to assist should you have any questions or need further clarification on any topics.


The home inspection is the opportunity for the buyer of a property to hire a licensed professional to inspect the home and to provide a report as to the condition of the home on the day of the inspection.

At AA Marshall, we are thankful for our place in your home buying process. In an effort to manage expectations, we provide an agreement for you to e-sign prior to our visit to your new home. In this agreement, we list limitations and share the scope of the job we will be performing. When your order for inspection is confirmed with the listing agent, you will receive an email with the agreement link attached.


We make every effort to keep the cost of your inspection needs as low as possible.  We confidently provide the best value for service in each of our markets served.  If you elect to pay with credit card, there will be a processing fee of 3.99%. However, if you choose to pay with a check on site or electronically, there is no additional charge for you.

Once your booking has been marked as PAID and the agreement has been signed, the report will be released to you for review within 24 hours of the inspection.  Report processing is completed at the end of each business day.

STANDARDS of practice

All licensed home inspectors follow a standard of practice. AA Marshall Home Inspection Services Inc. is a licensed home inspection company in Illinois and Indiana. We follow the InterNACHI standards of practice. For more details about your home inspection and what will or will not be inspected, please visit this link