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Best Radon Contractors in Roanoke, Virginia (2026)

Ranked using real Google ratings, review counts, and certification data only.

Back to Roanoke pageView Virginia pageTake the assessment

#3

FIRM FOUNDATION HOME INSPECTIONS LLC

Roanoke, VA

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Google rating: No Google rating available

Reviews: 0

Certifications: 1

Certifications

NRSB Mitigation Specialist

Services

radon mitigationMitigation
Call 5405123115Visit website

#4

Froehling & Robertson, Inc.

Roanoke, VA

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Google rating: 3.7 (6 reviews)

Reviews: 6

Certifications: 3

Certifications

NRPP Measurement ProfessionalNRSB Measurement TechnicianNRSB Mitigation Specialist

Services

TestingMeasurementradon mitigationMitigation
Call (540) 344-7939Visit website

#10

Promark Professional Home Inspections

Roanoke, VA

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Google rating: 5.0 (7 reviews)

Reviews: 7

Certifications: 1

Certifications

NRSB Mitigation Specialist

Services

radon mitigationMitigation
Call 5408154285Visit website

#11

JOHN M. WILLIAMS, JR.

Roanoke, VA

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Google rating: 4.9 (113 reviews)

Reviews: 113

Certifications: 1

Certifications

NRSB Measurement Technician

Services

TestingMeasurement
Call 5405371418

#12

CORNERSTONE HOME INSPECTIONS, LLC

Roanoke, VA

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Google rating: No Google rating available

Reviews: 0

Certifications: 1

Certifications

NRSB Mitigation Specialist

Services

radon mitigationMitigation
Call 5407975996

How We Rank Contractors in Roanoke

Our ranking methodology is transparent and data-driven. Sponsored placements are clearly labeled and appear separately — they do not influence organic ranking position.

  1. Google rating — Higher average ratings rank higher. This reflects real customer satisfaction across verified Google Business profiles.
  2. Review volume — More reviews break ties between similar ratings. A 4.8 with 50 reviews outranks a 4.8 with 3 reviews because the signal is more reliable.
  3. Certification count — NRPP and NRSB certifications break remaining ties. More certifications indicate broader competency across mitigation, measurement, and specialized techniques.
  4. Data integrity — All ranking data comes from verified sources: Google Business API, NRPP/NRSB certification databases, and contractor websites. Template-generated or unverifiable data is excluded.

Read our full methodology for details on data sourcing, verification, and quality thresholds.

Related Pages

All contractors in Roanoke (13)All contractors in VirginiaMitigation cost in VirginiaTesting cost in VirginiaCost calculator tool

FAQ

Who is the best radon contractor in Roanoke?

CALVERT Home Inspection, LLC is currently ranked #1 in Roanoke based on Google rating, review volume, and certification count from our verified data sources.

How many radon contractors are in Roanoke?

We currently list 13 radon contractors in Roanoke, Virginia. 13 hold NRPP or NRSB certifications and 8 have Google reviews.

What should I look for when choosing a radon contractor?

Focus on strong ratings with meaningful review volume, current professional certifications (NRPP or NRSB), and clear service coverage for your home type. A good contractor will assess your specific foundation and provide a written scope that includes suction point count, pipe routing, fan specification, and post-mitigation testing.

How are these Roanoke contractors ranked?

We rank contractors using a transparent, data-only methodology: Google rating first, review count second, and certification count third. Sponsored placements appear in a separate, clearly labeled section and do not influence organic ranking position. All ranking data comes from verified sources including Google Business profiles and national certification databases.

Should I get multiple quotes in Roanoke?

Yes. With 13 contractors in Roanoke, getting at least two written quotes is practical and recommended. Compare the number of suction points, fan model, pipe routing plan, warranty length, and whether post-mitigation testing is included. Price alone is not a reliable differentiator — system design matters more for long-term radon reduction.