Bio 911

5.0
77 Verified Reviews
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100% Recommended

21 Years In Business

Company Details

  • Bilingual

Contact

755 Savannah Circle
Walnut Creek, CA 94598
http://www.bio911sf.com

Hours

  • Mon: 8:00 AM - 6:00 PM
  • Tue: 8:00 AM - 6:00 PM
  • Wed: 8:00 AM - 6:00 PM
  • Thu: 8:00 AM - 6:00 PM
  • Fri: 8:00 AM - 6:00 PM
  • Sat: Closed
  • Sun: Closed
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Achievements

Seal of Approval
Top Rated Professional
Elite Service Professional
Best of HomeAdvisor
Five Years With HomeAdvisor
50 Homeowner Reviews

Service Details

  • Residential Work
  • Commercial Work

Areas of Expertise

  • Mold remediation
  • Disinfection
  • Hoarding Cleanup
  • Trauma Scene Decon
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Deals

Cost Information

  • Free Estimates
  • Credit Cards Accepted

Ratings

5.0
77 Verified Reviews
  • 5
    77
  • 4
    0
  • 3
    0
  • 2
    0
  • 1
    0

Highly rated for

  • Overall Rating
  • Value
  • Customer Service
  • Quality

Reviews

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Showing 1-10 of 77 results
5.0 Flora B. South San Francisco, CA
5/30/2026

Thank you for a job well done. Michael was the one who did a professional job. He was very trusted & fast worker. He explained all the works that has to be done inside the house. It was indeed a satisfactory job. Highly recommended 👍

5.0 Celeste D. El Sobrante, CA
5/20/2026

I needed mold inspection done with a very quick turn around. They were able to come out the next day.

5.0 Thom M. San Carlos, CA
1/22/2026

Bio 911 was fast and efficient. Explained every detail of the procedure. The air tests preformed at the conclusion of the remediation process were well within the zone for occupancy. Job well done by all participants.

5.0 Carolyn E. Dublin, CA
11/17/2025

They did a good job.

5.0 Whitney Q. Daly City, CA
2/11/2025

Kirill was thorough and factual without being an alarmist. Very happy with the service provided.

5.0 Martin M. Walnut Creek, CA
12/20/2023

Kirill called me right away and provided service the next day. Test results were shared quickly and customer service was excellent.

5.0 Stacey S. Redwood City, CA
10/14/2023

They were proactive and followed through on everything they said they would do quickly and efficiently.

5.0 Robyn C. Clayton, CA
9/27/2023

Kirill is very knowledgeable, and explains findings in way that I can understand and know how to proceed.

5.0 Heather C. San Francisco, CA
9/21/2023

Free estimate for mold removal in a closet On time cleaned afterwards and weâ re polite.

5.0 Nathan W. Walnut Creek, CA
9/20/2023

Excellent work! Fast and reasonably priced!

Showing 1-10 of 77 results Showing 0 of 0 results
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Photos

Bio 911
8
Bedroom and living room
4
Mold remediation
10
Hoarding Cleanup

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