Lance Dorfi, LLC logo
Approved Pro
This pro has maintained an average of 4.5+ star throughout their time with Angi.
Approved Pro

Lance Dorfi, LLC

Radon Gas Testing, Radon Gas Abatement,
This pro has maintained an average of 4.5+ star throughout their time with Angi.

About us

At Lance Dorfi, LLC, we work hard to bring each customer the best possible service and quality available. We look forward to working with you on your next home improvement project, no matter how small or large the project. We welcome your questions and thank you for your interest.

Business highlights

Se habla espanol
Emergency services offered
15 years of experience

Services we offer

Radon Gas - Abatement , Radon Gas - Testing , Testing & Abatement Services , Testing and Treatment for Radon in Water

Amenities

Emergency Services

Yes

Free Estimates

Yes

Warranties

Yes

Accepted Payment Methods

  • CreditCard
Reviews
4.859 Reviews
Number of StarsImage of DistributionNumber of Ratings
5
90%
4
8%
3
0%
2
0%
1
2%

Filter reviews by service

Showing 1-25 of 59 reviews
Robert G.
May 2025
5.0
Radon Gas Abatement
Yes, I recommend this pro
$2,000
They did a great job

Nicholas B.
Feb 2024
5.0
Radon Gas Abatement
Yes, I recommend this pro
Extremely professional from the person who picks up the phone to the person that shows up at your house. Extremely responsive.

REED B.
May 2023
5.0
Radon Gas Abatement
Yes, I recommend this pro
$1,650
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.

David V.
May 2023
5.0
Radon Gas Abatement
Yes, I recommend this pro
Professional. Solution was designed to the property, not cookie cutter. Showed up on time, worked clean, communicated well. Highly recommend.

Richard E.
Jan 2023
5.0
Radon Gas Abatement
Yes, I recommend this pro
$650
Quick response, honest assessment, quick fan installation.

Karen S.
Nov 2022
5.0
Radon Gas Abatement
Yes, I recommend this pro
Highly recommended this company. We are very satisfied with their work. Always on time. Friendly and professional.

Mary S.
Oct 2022
5.0
Radon Gas Abatement
Yes, I recommend this pro
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.

Terrence M.
Sep 2022
5.0
Radon Gas Abatement
Yes, I recommend this pro
The price was right and the quality of work was excellent. I will recommend them to others.

Mathews K.
Feb 2022
5.0
Radon Gas Abatement
Yes, I recommend this pro
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!

Hao H.
Jan 2022
5.0
Radon Gas Abatement
Yes, I recommend this pro
$1,500
On time, responsive and professional service.

Christina T.
Dec 2021
5.0
Radon Gas Abatement
Yes, I recommend this pro

Len N.
Dec 2021
5.0
Radon Gas Testing
Yes, I recommend this pro
$150
Quick response to request for quote, performed radon test as scheduled and emailed results quickly.

Amarah D.
Nov 2021
1.0
Radon Gas Abatement
$1,500
Emphatically do not recommend. Lance came out to our place in the Hudson Valley to quote on a radon mitigation solution before we bought our house. We engaged him to do the work, and on the day of the service (I was not on site), he called to say that he actually thought a different system might work better, though it would cost significantly more (note we had already factored the cost he quoted on into our house purchase negotiations). When I pushed him on this, he backpedaled and said the system he first suggested would work fine, and if it did not, we could move to plan B, paying only the difference. It did not work. When I followed up to move to plan B, he refused to honor his word, tried to weasel out of his contract by saying that the Airthings Air Monitor (that he recommended) was not accurate and tested high, and then ultimately quoted me a cost far exceeding the original work, without any offset for the amount we already paid.

Joe D.
Oct 2021
5.0
Radon Gas Abatement
Yes, I recommend this pro

Johan B.
Sep 2021
5.0
Radon Gas Abatement
Yes, I recommend this pro
$1,500
Very efficient service and installation.

Sharon E.
Sep 2021
5.0
Radon Gas Abatement
Yes, I recommend this pro
Lance Dorfi was proactive, efficient, and professional. They came to every appointment on time and tailored a radon mitigation solution that reduced the levels. I would highly recommend them for radon mitigation!

Kay B.
Aug 2021
5.0
Yes, I recommend this pro
Perfect. Knowledgable, professional,
Response from Lance Dorfi, LLC
"Thank you Kay. Glad you are happy."

Colleen O.
Aug 2021
5.0
Radon Gas Abatement
$1,500
Lance Dorfi was incredibly professional and efficient. They responded to my emails quickly and the installation of the radon mitigation system was done within 3 hours and has reduced our radon level significantly. I would absolutely recommend them!
Response from Lance Dorfi, LLC
"Thanks Colleen. Pleasure to work with you."

Alex W.
Aug 2021
5.0
Radon Gas Abatement
Yes, I recommend this pro
$450
All the people I interacted were friendly and professional. They arrived on time and got the job done very efficiently. They didnâ t try to push for the services that were not needed.

David H.
Aug 2021
5.0
Radon Gas Abatement
Yes, I recommend this pro
$1,600
Came as scheduled, easy to work with

Diane V.
Jul 2021
5.0
Radon Gas Abatement
Yes, I recommend this pro
Excellent company to deal with. Fast, professional, and quick response!!!!!!

Michael F.
Jul 2021
5.0
Radon Gas Abatement
Yes, I recommend this pro
Responsive, easy install and professional. I’d recommend.

Barry M.
Apr 2021
5.0
Radon Gas Abatement
Yes, I recommend this pro
$400
Excellent. On time and budget. Easy to work with and personable.

Steven S.
Mar 2021
5.0
Radon Gas Abatement
Yes, I recommend this pro
Lance and his team came out and got the job lightning fast. They did high quality work and for a fair price too!

Naoto H.
Jan 2021
5.0
Radon Gas Abatement
Yes, I recommend this pro
$1,500
Lance and his crew showed up right on time, explained clearly what they were going to do, and answered all of my questions. After the installation was completed, they cleaned everything up, so there was nothing I needed to do afterwards. I realize that every house is different, and radon mitigation results will vary from house to house. Also, my house had ideal conditions for a good radon mitigation outcome - a 4 inch gravel bed under a basement concrete slab with no cracks or other places radon gas could enter from below. Having said that, my radon levels before mitigation averaged 4-6 pCi/L, with occasional peaks to 10-12 pCi/L on some days. After mitigation, the levels have been below 1.0 pCi/L since installation 2 weeks ago. Needless to say, I am very pleased with the result. I would not hesitate to recommend Lance and his crew for any work you might need for your home.
Showing 1-25 of 59

Licensing

State Contractor License Requirements

All statements concerning insurance, licenses, and bonds are informational only, and are self-reported. Since insurance, licenses and bonds can expire and can be cancelled, homeowners should always check such information for themselves. To find more licensing information for your state, visit our Find Licensing Requirements page.

*Contact business to see additional licenses.

FAQ

Lance Dorfi, LLC is currently rated 4.8 overall out of 5.

Monday: 9:00 AM - 6:00 PM Tuesday: 9:00 AM - 6:00 PM Wednesday: 9:00 AM - 6:00 PM Thursday: 9:00 AM - 6:00 PM Friday: 9:00 AM - 6:00 PM Saturday: 8:00 AM - 2:00 PM Sunday: Closed

Lance Dorfi, LLC accepts the following forms of payment: CreditCard

Yes, Lance Dorfi, LLC offers free project estimates.

No, Lance Dorfi, LLC does not offer eco-friendly accreditations.

No, Lance Dorfi, LLC does not offer a senior discount.

Yes, Lance Dorfi, LLC offers emergency services.

Yes, Lance Dorfi, LLC offers warranties.