#1
Rex Environmental
“I had great experience working with Rex Environmental! They provide excellent reports and have a quick response time. Betty is especially wonderful—she’s friendly, helpful, and great to work with. Their…” — Google review
Experts Reviews · 2026 Ratings
The Best Hazardous Material Removal in Boulder, CO
We graded 7 companies on seven things customers actually report: satisfaction, reliability, workmanship, value, momentum, track record and how owners handle complaints.
—typical jobMedian of the bill customers reported in their Google review (Google asks reviewers for a price range; we use the middle of each range).
98%say the price was fairOf customers who rated the price, the share who chose “Great price” or “Reasonable” rather than “Overpriced”.
4.88★average ratingPlain average of every Google star rating we collected for these companies.
2.1%bad jobs (1–2★, 2 yrs)Share of 1–2★ reviews in the last 24 months — or the 20 newest reviews when the company had fewer than 20 in that time.
From 27,838 Google reviews of 231 top-rated hazardous material removal nationwide; 7 of them in Boulder, CO. Updated November 13, 2026.
Find the right company for your job
Pick the job — we re-rank companies by how customers rated that exact job.
Overall ratings
Experts Score 0–100Experts Score (0–100)Absolute quality first: recency-weighted star average (≈54%), share of 1–2★ reviews (≈24%), customers’ price verdicts (≈14%), owner replies to critical reviews (≈7%); minus up to 10 points each for complaints flagged in Google review highlights and for a real slide in recent ratings. Hover a company’s score on its page for the full breakdown. and a letter grade per factor (A = top 20% of hazardous material removal).
| # | Company | ScoreExperts Score (0–100)Absolute quality first: recency-weighted star average (≈54%), share of 1–2★ reviews (≈24%), customers’ price verdicts (≈14%), owner replies to critical reviews (≈7%); minus up to 10 points each for complaints flagged in Google review highlights and for a real slide in recent ratings. Hover a company’s score on its page for the full breakdown. | FactorsFactor grades, in orderSatisfaction (54%): Recency-weighted star average (2-year half-life), shrunk toward the category mean by review volume; the company’s own lifetime average as the prior; absolute: 4.0★ = 0, 5★ = 100.Reliability (24%): How rarely jobs go badly: share of 1–2★ reviews — 60% the last 24 months (or the 20 newest if fewer), 40% all-time; 0% = 100, 15%+ = 0; the category percentile can only raise it.Craft & service (0%): Google review highlights: Quality, Professionalism, Responsiveness, Punctuality — how rarely reviewers flag them as a negative, per review since highlights began; 0% = 100, 5%+ = 0. Subtracted from the score (up to −10), never averaged in — clean highlights are the norm, not a bonus.Value (14%): Customers’ own price verdicts (Great / Reasonable vs Overpriced) and Value highlights; 65% absolute (all “reasonable” ≈ 80, “great” = 100), the category percentile can only raise it.Momentum (0%): Penalises only a real slide: last-12-month average below lifetime (−0.5★ = 0). Still 4.8★+ over the last year, or steady/improving = 100. Subtracted from the score (up to −10), never averaged in.Replies to reviews (7%): How often the owner publicly replies to reviews under 5★ (1–4★). Needs 3+ such reviews, otherwise not counted; 65% absolute (80%+ replied = 100), the category percentile can only raise it.One letter per factor score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = below 20. | ★Google star rating as shown on Google Maps. | Typical billMedian bill customers of this company reported in their reviews (needs 3+ priced reviews). |
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| 1 |  Eco Tech Environmental, Inc.Boulder, CO | A 98How the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 59%99+58.1Reliability 26%97+25.3Value 15%100+15.2Craft & service penalty98−0.2Experts Score= 98Not enough data for replies to reviews; its weight is shared by the others.Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAA– | 5.00 | — |
| 2 |  TOP-NOTCH SOLUTIONSBoulder, CO | A 97How the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 69%98+67.8Reliability 31%96+29.5Experts Score= 97Not enough data for value, replies to reviews; its weight is shared by the others.Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AA––A– | 5.00 | — |
| 3 |  Integrity Environmental Testing - BoulderBoulder, CO | A 96How the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 69%97+67.2Reliability 31%95+29.2Experts Score= 96Not enough data for value, replies to reviews; its weight is shared by the others.Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AA––A– | 5.00 | — |
| 4 |  Asbestos Abatement, Inc.Boulder, CO | A 92How the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 64%96+61Reliability 28%97+27.4Replies to reviews 8%47+3.9Experts Score= 92Not enough data for value; its weight is shared by the others.Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AA––AC | 4.95 | — |
| 5 |  M.A.R.S. EnvironmentalBoulder, CO | A 92How the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 64%93+59.1Reliability 28%94+26.5Replies to reviews 8%78+6.4Experts Score= 92Not enough data for value; its weight is shared by the others.Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AA––AB | 4.91 | — |
| 6 |  AmeriForce Environmental INCBoulder, CO | A 89How the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 64%90+57.2Reliability 28%85+24Replies to reviews 8%100+8.2Experts Score= 89Not enough data for value; its weight is shared by the others.Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AA––AA | 4.90 | — |
| 7 |  Rockies Environmental & Demolition Services Inc.Boulder, CO | B 75How the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 64%83+52.7Reliability 28%72+20.3Replies to reviews 8%58+4.8Momentum penalty69−3.1Experts Score= 75Not enough data for value; its weight is shared by the others.Grade B: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AB––BC | 4.88 | — |
What jobs cost
What customers paid, from the price Google asks reviewers to report.
| Job | Low25th percentile: 1 in 4 customers paid less than this. | TypicalMedian of the bill customers reported in their Google review (Google asks reviewers for a price range; we use the middle of each range). | High75th percentile: 1 in 4 customers paid more than this. | FairOf customers who rated the price, the share who chose “Great price” or “Reasonable” rather than “Overpriced”. |
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Hazardous Material Removal in Boulder, CO at a glance
How the 7 hazardous material removal we rated in Boulder, CO compare, and what customers praise most.
Experts Score grades
A = score 80+, F = below 20.
- Grade A686%
- Grade B114%
- Grade C00%
- Grade D00%
- Grade F00%
Google ratings
Average stars per company.
- 4.90★ and up686%
- 4.80–4.89★114%
- 4.60–4.79★00%
- Below 4.60★00%
What customers praise
Share of Google review highlights.
- Quality3,39619%
- Professionalism4,33125%
- Responsiveness3,67221%
- Punctuality3,15518%
- Value2,92217%
Was the price fair?
All price verdicts left with reviews.
- Great price51946%
- Reasonable51045%
- Overpriced242%
- Not sure868%
Price verdicts by year
Share calling it great / reasonable / overpriced.
2025
2026
How we grade
Satisfaction (54%) — Recency-weighted star average (2-year half-life), shrunk toward the category mean by review volume; the company’s own lifetime average as the prior; absolute: 4.0★ = 0, 5★ = 100.
Reliability (24%) — How rarely jobs go badly: share of 1–2★ reviews — 60% the last 24 months (or the 20 newest if fewer), 40% all-time; 0% = 100, 15%+ = 0; the category percentile can only raise it.
Craft & service (penalty, up to −10) — Google review highlights: Quality, Professionalism, Responsiveness, Punctuality — how rarely reviewers flag them as a negative, per review since highlights began; 0% = 100, 5%+ = 0. Subtracted from the score (up to −10), never averaged in — clean highlights are the norm, not a bonus.
Value (14%) — Customers’ own price verdicts (Great / Reasonable vs Overpriced) and Value highlights; 65% absolute (all “reasonable” ≈ 80, “great” = 100), the category percentile can only raise it.
Momentum (penalty, up to −10) — Penalises only a real slide: last-12-month average below lifetime (−0.5★ = 0). Still 4.8★+ over the last year, or steady/improving = 100. Subtracted from the score (up to −10), never averaged in.
Replies to reviews (7%) — How often the owner publicly replies to reviews under 5★ (1–4★). Needs 3+ such reviews, otherwise not counted; 65% absolute (80%+ replied = 100), the category percentile can only raise it.
The 10 best-rated hazardous material removal in Boulder, CO average 4.9★ on Google across 1,824 reviews. Rex Environmental has the top rating (5.0★). Updated November 8, 2026.
10 companies that meet our bar: rated 4.5★ or higher on Google, with a meaningful review history (1,824 reviews combined) and currently operating. Request a call back and the company will phone you directly.
#2
AmeriForce Environmental INC
“Angels crew did a fantastic job and truly went above and beyond. Their hard work, dedication, and attention to detail really stood out. I couldn’t be happier with the results, and I truly appreciate the extra effort…” — Google review
#3
Asbestos Abatement, Inc.
“The folks at Asbestos Abatement inc. were a pleasure to deal with . Ray walked us through the process beautifully and Mike, Carlos and the crew were excellent in carrying out the abatement. And Shannon at the home…” — Google review
#4
RDS Environmental
“I'm happy with the work they did and would recommend. Very friendly folks and didn't mind all my questions when they were installing.” — Google review
#5
Rockies Environmental & Demolition Services Inc.
“I am a contractor in the Denver area, Irwen and Alfredo came to my rescue to handle a decent sized abatement job in Lakewood. These guys worked with me every step of the way. Don’t bother getting other bids, don’t…” — Google review
#6
M.A.R.S. Environmental
“My experience with them as always been professional, with integrity, and knowledgeable. I'm a real estate agent that has referred many clients.” — Google review
#7
Eco Tech Environmental, Inc.
“I had a great experience with Eco Tech from beginning to end. The entire team was professional, responsive, and easy to work with. They communicated clearly, showed up when they said they would, and made sure…” — Google review
#8
Colorado Asbestos Inspections, LLC
“Needed an asbestos inspection before doing some drywall work. Jim was easy to work with, efficient, quick, and thorough.” — Google review
#9
TOP-NOTCH SOLUTIONS
“Top notch gave me the most reasonable bid out of 4 companies. They came out to my property immediately for an appt. Several companies wanted to bid without coming to property. They were true to there word on the…” — Google review
#10
Integrity Environmental Testing - Boulder
“I have used Integrity environmental testing a few times now. I appreciate their professionalism and promptness. Miles helped us test today and he was great, he gave me a heads up 30min prior to arrival, he made sure…” — Google review
How we pick hazardous material removal in Boulder
We scan Google Maps for hazardous material removal service listings in and around Boulder, keep only open businesses whose main category matches the service, and require a Google rating of at least 4.5 from at least 20 reviews. Companies are ordered by a confidence-weighted score that balances rating and review volume. We do not accept payment for placement.
Frequently asked questions
Who is the highest-rated hazardous material removal service in Boulder?
Rex Environmental has the highest Google rating on our Boulder list: 5.0 out of 5 from 672 reviews (as of November 8, 2026).
Which hazardous material removal service in Boulder has the most reviews?
Rex Environmental has the most Google reviews among the companies listed here: 672, with a 5.0★ average.
How are these hazardous material removal chosen?
Only open Boulder-area businesses whose Google category matches the service, rated at least 4.5★ from at least 20 Google reviews. They are ordered by a confidence-weighted score of rating and review volume. Placement is never paid.
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