#1
Patricia Lopes
Silver Spring, MD
Google rating: 5.0 (11 reviews)
Reviews: 11
Certifications: 1
Certifications
NRPP Measurement Professional
Services
MitigationTestingCommercial
Best Radon Contractors in Silver Spring, Maryland (2026)
Ranked using real Google ratings, review counts, and certification data only.
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#2
John S. Swett
Silver Spring, MD
Google rating: 4.8 (57 reviews)
Reviews: 57
Certifications: 1
Certifications
NRPP Mitigation Specialist
Services
MitigationTesting
#3
Gregory F Michelsen
Silver Spring, MD
Google rating: No Google rating available
Reviews: 0
Certifications: 1
Certifications
NRPP Measurement Professional
Services
TestingCommercial
#4
Stephen Berry
Silver Spring, MD
Google rating: No Google rating available
Reviews: 0
Certifications: 1
Certifications
NRPP Measurement Professional
Services
TestingCrawlspaceCommercial
How We Rank
- Google rating: higher average ratings rank higher.
- Review count: more reviews break ties between similar ratings.
- Certification count: more certifications break ties after rating and review metrics.
- Verified data only: rankings are based on stored profile data, not manual edits or paid placement.
FAQ
Who is the best radon contractor in Silver Spring?
Patricia Lopes is currently ranked #1 in Silver Spring based on Google rating, review volume, and certification count from our verified data sources.
How many radon contractors are in Silver Spring?
We currently list 4 radon contractors in Silver Spring, Maryland.
What should I look for?
Focus on strong ratings with meaningful review volume, current professional certifications, and clear service coverage for your home type.