My experience with them as always been professional, with integrity, and knowledgeable. I'm a real estate agent that has referred many clients.

M.A.R.S. Environmental
M.A.R.S. Environmental at a glance
Google reviewers rate M.A.R.S. Environmental 4.9 out of 5 based on 104 reviews, with the owner responding to 20% of them. Clients frequently praise the company for punctuality, professional communication, reasonable pricing, and thorough testing services for mold, asbestos, radon, and fire damage. Recurring themes include knowledgeable staff who clearly explain results and responsive scheduling. However, two low-star reviews criticize the firm for incomplete remediation work, lack of follow-up, and charging extra fees for errors.
- Google rating: 4.9 out of 5 from 104 reviews (97% five-star).
- Reviews on this page: 104 Google reviews (87 with written comments).
- Owner responses: the business replied to 20% of reviews.
- Most recent review: October 8, 2026.
- Service: Hazardous Material Removal Service serving Boulder, Colorado.
Data from Google, last updated November 8, 2026.
Score profile vs other hazardous material removal
Score per factor (100 = best)Each factor is scored 0–100 on absolute terms (star average, share of 1–2★ reviews, price verdicts…); standing within the category can only raise it, never lower it.. Strongest: momentum and reliability; weakest: replies to reviews.
Bar = this company · dark tick = category median.
Star ratings
104 Google reviews we collected
- 5 stars10197%
- 4 stars11%
- 3 stars00%
- 2 stars00%
- 1 star22%
Praise vs complaints
Phrases our text analysis found in 87 written reviews
- Praise19298%
- Complaints42%
Topic share
How often each topic comes up in the written reviews
- Staff & attitude4925%
- Speed & response3719%
- Quality & results3417%
- Would recommend3417%
- Communication2111%
- Price & value147%
- Honesty & trust74%
What customers talk about
We read 87 written reviews and marked every phrase about these topics. The same colors are highlighted in the reviews.
“My experience with them as always been professional, with integrity, and knowledgeable.”
“they were very quick to set up an appointment, arrived right on time and their representative was knowledgeable and very pleasant.”
“I highly recommend this quality, top notch business with reasonable pricing.”
“It was a good experience and I recommend MARS Environmental!”
“I can't recommend this company enough.”
“Answered all our questions and were very professional.”
“Incredible and professional service, very reasonable pricing, and great explanation and report of results.”
“Thank you to your hard work, honesty, attentiveness and dedication to this work.”
People customers mention
- Jeanine 18 reviews
- Fire 5 reviews
praise complaint · found by our text analysis, Google review wording unchanged.
Recent reviews
My experience with them as always been professional, with integrity, and knowledgeable. I'm a real estate agent that has referred many clients.
they were very quick to set up an appointment, arrived right on time and their representative was knowledgeable and very pleasant. It was a good experience and I recommend MARS Environmental!!
Extremely Professional and knowledgeable. On time for the appointment. Great Service!
Incredible and professional service, very reasonable pricing, and great explanation and report of results. Highly recommend for you mold testing needs!
Answered all our questions and were very professional. Explained the process to us which helped us feel better about what the results could require us to do.
I highly recommend this quality, top notch business with reasonable pricing. Brooke made scheduling super easy and sets a gold standard for working with clients. Linzy came out for the inspection and she’s an expert through and through. She explained everything in detail and did a thorough job. Thank you M.A.R.S Environmental!
Photos
Customer reviews
4.9 ★★★★★ 104 reviews on Google · rating breakdown
Reviews from Google, shown as published (original wording, unedited).
they were very quick to set up an appointment, arrived right on time and their representative was knowledgeable and very pleasant. It was a good experience and I recommend MARS Environmental!!
Very timely and extremely professional!
Extremely Professional and knowledgeable. On time for the appointment. Great Service!
They were thorough and did a good job.
Incredible and professional service, very reasonable pricing, and great explanation and report of results. Highly recommend for you mold testing needs!
Thank you so much for your kind words and recommendation! We truly appreciate you taking the time to share your experience. We're glad we could provide professional service, clear explanations, and a thorough report that gave you confidence in the results. It was a pleasure working with you, and we're here anytime you need mold testing or other environmental inspection services in the future!
Answered all our questions and were very professional. Explained the process to us which helped us feel better about what the results could require us to do.
I highly recommend this quality, top notch business with reasonable pricing. Brooke made scheduling super easy and sets a gold standard for working with clients. Linzy came out for the inspection and she’s an expert through and through. She explained everything in detail and did a thorough job. Thank you M.A.R.S Environmental!
i am writing to provide the highest recommendation for MARS environmental. I suffered an electrical fire that left my house in-tact but we knew that there was toxic residue left by this fire, our insurance company wanted to do simple cleaning - we turned to MARS and had them do a full test of our house. They were professional, timely and the report they produced was exhibit #1 in our battle with the insurance company. It is important to know that MARS reports the facts, it is not subjective or legal positioning and the facts fully supported a full tear down of our structure. If we had only cleaned, our health would have been compromised and that is what the insurance company wanted to do. Jeanine and the MARS team are very professional, responsible and i would give them my highest rating for any situations that involves assessing environmental chemical issues. Signed - very happy in Montana
Great job! Very professional and they did everything to ensure it was cleaned and that the area was contained. Great staff.
Business details
- Address: 580 Burbank St #115, Broomfield, CO 80020
- Phone: (720) 388-8448
- Website: marsenv.com
- Service area: Boulder, CO