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HomeAdvisor Screened & Approved

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Learn about our screening process

14 Years In Business

Company Details

  • Verified Licenses
  • Bilingual


57 Westchester Avenue, Unit 207
Pound Ridge, NY 10576


  • Mon: 9:00 AM - 6:00 PM
  • Tue: 9:00 AM - 6:00 PM
  • Wed: 9:00 AM - 6:00 PM
  • Thu: 9:00 AM - 6:00 PM
  • Fri: 9:00 AM - 6:00 PM
  • Sat: 8:00 AM - 2:00 PM
  • Sun: Closed
View All Details & Credentials


Service Details

    Areas of Expertise

    • Testing & Abatement Services
    • Radon Gas - Abatement
    • Radon Gas - Testing
    • Testing and Treatment for Radon in Water
    View All Offerings and Cities Served

    Cost Information

    • Free Estimates
    • Warranty Offered
    • Credit Cards Accepted


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

    Highly rated for

    • Quality
    • Value
    • Customer Service
    Showing 1-10 of 58 results
    5.0 Nicholas B. Rye, NY

    Extremely professional from the person who picks up the phone to the person that shows up at your house. Extremely responsive.

    5.0 Reed B. Larchmont, NY

    I still have to test for the radon levels, but the installation was very professionally done, and they told me what I needed to know to maintain the system.

    5.0 David V. North Salem, NY

    Professional. Solution was designed to the property, not cookie cutter. Showed up on time, worked clean, communicated well. Highly recommend.

    5.0 Richard E. Yorktown Heights, NY

    Quick response, honest assessment, quick fan installation.

    5.0 Karen S. Stamford, CT

    Highly recommended this company. We are very satisfied with their work. Always on time. Friendly and professional.

    5.0 Mary e. S. Goldens Bridge, NY

    I value expertise and we are working together to find the source of the radon readings and will discuss remediation after the next test results.

    5.0 Terrence M. New Fairfield, CT

    The price was right and the quality of work was excellent. I will recommend them to others.

    5.0 Mathews K. Peekskill, NY

    Great people to work with. Prompt with every step. It was a heavy snow day, day before the work was scheduled. Still they called in the morning of the day to let me know that they were running 30 minutes late and came, finished the work!

    5.0 Hao H. Trumbull, CT

    On time, responsive and professional service.

    5.0 Christina T. Westport, CT


    Lance Dorfi, LLC
    On Site with Our Sprinter

    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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