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Drennen Custom Contracting (Radon and Roofing)
#1 in Fort Collins
Ranked by Google ratings, review quality, and response time. Updated April 2026.
608 E Trilby Rd, Fort Collins, CO 80525, USA, Fort Collins, CO 80525
Why they ranked: Our top-ranked pick with an exceptional 5-star rating across 385 Google reviews.
438 S Link Ln, Fort Collins, CO 80524, USA, Fort Collins, CO 80524
Why they ranked: A close runner-up with an exceptional 5-star rating across 139 Google reviews.
4412 E Mulberry St, Fort Collins, CO 80524, USA, Fort Collins, CO 80524
Why they ranked: Ranked #3 with an exceptional 5-star rating across 57 Google reviews.
3717 S Taft Hill Rd #161, Fort Collins, CO 80526, USA, Fort Collins, CO 80526
Why they ranked: Ranked #4 with an exceptional 5-star rating from 46 reviews.
2909 Oxford Ct, Fort Collins, CO 80525, USA, Fort Collins, CO 80525
Why they ranked: Ranked #5 with an exceptional 5-star rating from 23 reviews.
3500 Swanstone Dr UNIT 57, Fort Collins, CO 80525, USA, Fort Collins, CO 80525
Why they ranked: Ranked #6 with an exceptional 5-star rating from 22 reviews.
3030 Garrett Dr, Fort Collins, CO 80526, USA, Fort Collins, CO 80526
Why they ranked: Ranked #7 with an exceptional 5-star rating from 15 reviews.
213 Saturn Dr, Fort Collins, CO 80525, USA, Fort Collins, CO 80525
Why they ranked: Ranked #8 with an exceptional 4.9-star rating from 28 reviews.
5605 McWhinney Blvd, Loveland, CO 80538, USA, Fort Collins, CO 80538
Why they ranked: Ranked #9 with an exceptional 4.8-star rating across 234 Google reviews.
816 S College Ave Unit B, Fort Collins, CO 80524, USA, Fort Collins, CO 80524
Why they ranked: Ranked #10 with an exceptional 4.8-star rating across 51 Google reviews.
Rating Score (50%) — Average star rating from Google customer reviews.
Review Volume (30%) — Number of Google reviews. More reviews = greater confidence.
Response Time (20%) — Faster response times earn higher rankings.
Only businesses with 3+ reviews are eligible. Rankings refresh every hour. Paid listings do not influence ranking order.
Drennen Custom Contracting (Radon and Roofing) currently holds the top spot with a 5-star rating across 385 reviews.
No. Paid tiers get additional profile features, but ranking order is determined solely by ratings, reviews, and response time.
List your business and accumulate at least 3 Google reviews. Rankings are automatic and updated hourly.
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