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HomeAdvisor Screened & Approved

This service professional has passed the HomeAdvisor screening process.

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Learn about our screening process

32 Years In Business

Company Details


PO Box 150372
Lakewood, CO 80215


  • Mon: 12:00 AM - 11:00 PM
  • Tue: 12:00 AM - 11:00 PM
  • Wed: 12:00 AM - 11:00 PM
  • Thu: 12:00 AM - 11:00 PM
  • Fri: 12:00 AM - 11:00 PM
  • Sat: 12:00 AM - 11:00 PM
  • Sun: 12:00 AM - 11:00 PM
View All Details & Credentials


Service Details

  • Residential Work
  • Commercial Work
  • Small Jobs Welcome

Areas of Expertise

  • Soil and Water Sampling/Testing- Residential and Commercial
  • Mold Inspections and Testing- Residential & Commercial- Over 20 years of experience
  • Radon Testing- Residential and Commercial- Over 20 years of experience
  • Asbestos and Lead Inspections and Testing- Residential and Commercial- Over 30 years of experience
  • 15 plus years of experience with Residential Construction prior to becoming an "Environmental Building Inspector"
View All Offerings and Cities Served

Cost Information

  • Free Estimates
  • Credit Cards Accepted


273 Verified Reviews
  • 5
  • 4
  • 3
  • 2
  • 1

Highly rated for

  • Quality
  • Value
  • Customer Service
Showing 1-10 of 273 results
5.0 Suellen R. Denver, CO

Shannon was professional, knowledgeable and pleasant. He answered calls promptly and followed up on the progress of the project after his portion was completed. Hopefully, I'll never need his services again, but I would call on him should the case arise; and I would definitely recommend him to anyone in need of environmental testing.

5.0 Rhonda M.

He was professional, friendly and efficient.

4.0 Jenny L. Crivitz, WI

Shannon was very professional and knowledge. He was very prompt and worked with us to accurately assess our situation.

5.0 Wesley J. Castle Rock, CO

Very professional company

4.0 John B. Englewood, CO

Shannon is very professional and knowledgeable. Our tests were completed in a timely manner and the reports were very thorough and understandable. I would strongly recommend Shannon to anyone needing air quality testing.

5.0 Mark B. Watkins, CO

Shannon is very knowledgeable. He has been doing this since after high school.

5.0 Kevin W. Denver, CO

best mold inspector

5.0 Krista S. Aurora, CO

Shannon was fantastic. He explained what he was doing and how it the whole test works. He even suggested another contractor for the job of cleaning up the mold after the testing. I would definitely recommend him for home testing. He did an amazing job!

5.0 Amanda T. Alma, CO

Shannon is very knowledgeable and thorough. We learned a lot of mold and where is can grow and how we can prevent and treat it. He is very kind, friendly and dependable!!!! I appreciated how organized Shannon was as well as how much he communicated with us through this process. Highly recommended!

4.5 Zachary B. Breckenridge, CO

Shannon was great at helping us understand what was happening within our home. We look forward to his recommended remediation and a happier, healthier home.


Walker Environmental

HomeAdvisor allows Service Professionals to post information about themselves and their business on their profile. HomeAdvisor does not review or verify the information representations set forth in those profiles as they are self-reported by the Service Professional.

HomeAdvisor verifies state-level licensing where applicable - note: some states require local or county level licensing and you should verify whether or not your pro is properly licensed.
To find more licensing information for your state, visit our Licensing Requirements page.

Seal of Approval

What is the screening process that Service Professionals go through in order to become members of the HomeAdvisor network?

  1. Verify Trade License
    HomeAdvisor checks to see if the business carries the appropriate state-level license.
  2. Verify Insurance
    As a part of our screening process, we encourage professionals to carry general liability insurance. We require coverage for hundreds of services.
  3. Verification of State Business Filings
    For business types that require a Secretary of State filing, we confirm that the business is in good standing in the state in which it is located.
  4. Criminal Records Search
    HomeAdvisor uses 3rd party data sources to conduct a criminal search for any relevant criminal activity associated with the owner/principal of the business.
  5. Sex Offender Search
    We confirm that the owner/principal is not listed on the official state Sex Offender web site in the state in which the owner/principal of the company is located.
  6. Bankruptcy Search
    We use 3rd party data sources to check the history of the principal/owner of the business for bankruptcy filings by or against them.
  7. Legal Search for Civil Judgments
    We use 3rd party data sources to check the principal/owner of the business for state level civil legal judgments entered against them.
  8. Liens Search
    We use 3rd party data sources to check the principal/owner of the business for liens placed against them.
  9. Identity Verification (SSN)
    HomeAdvisor verifies the social security number(s) of the owner/principal for identity check purposes. This check applies primarily to smaller business entities.
  10. Identity Verification (Reverse Phone Lookup)
    We conduct a reverse business phone lookup to identify records matching the phone number information provided by the business.

NOTE: Member service professional information confirmed as described above may change or expire over time; while HomeAdvisor attempts to maintain accurate and up-to-date information, and confirms changes when notified, we cannot guarantee that profile and screening information is accurate. Therefore, we recommend that before working with a service professional you verify that information presented is still current and/or acceptable to you.
Please see HomeAdvisor's Terms and Conditions for a full description of how we screen Service Professionals

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