Fremont, CA
Mold Remediation in Fremont, CA
Fremont, CA has 14 mold remediation companies in our listings, 9 list themselves as open 24 hours and the most reviewed is Roto-Rooter Plumbing & Water Cleanup with 259 reviews.
14 Companies Doing Mold Work in Fremont
- 1
Water Damage Solution24/7
Google rating 4.7 from 43 Google reviews Yelp 4.9 · Facebook 5.0 · BBB profile · Angi 4.5 (3)
Top Rated 2026
Water DamageMold
- 2
Reactic Restoration24/7
Google rating 5.0 from 12 Google reviews
Highly Rated 2026
Water DamageMoldFire and SmokeSewage
- 3
- 4
One Call Services24/7
Google rating 4.8 from 57 Google reviews Yelp 4.9 · Facebook 5.0 · BBB profile
Top Rated 2026
Water DamageMoldMold TestingFire and SmokeSewage
- 5
Dansel Restoration, Inc.24/7
Google rating 4.9 from 65 Google reviews Yelp 4.7 · BBB profile
Top Rated 2026
Water DamageMoldMold TestingFire and SmokeSewage
- 6
Bay Area Restoration
Google rating 4.9 from 43 Google reviews Yelp 4.9 · HomeAdvisor 4.5
Top Rated 2026
Water DamageMold
- 7
911 Restoration of East Bay SF24/7
Google rating 5.0 from 3 Google reviews
Verified Remediation Pro
Water DamageMoldMold TestingFire and SmokeSewage
- 8
Foster's Elite Property Improvements24/7
Google rating 4.4 from 14 Google reviews Yelp 4.6 · Facebook 5.0 · BBB profile
Verified Remediation Pro
Water DamageMoldMold TestingFire and SmokeSewage
- 9
Timeless Water Fremont
Google rating 5.0 from 5 Google reviews
Verified Remediation Pro
Water DamageMold
- 10
Northern California Environmental Testing
No public reviews yet
Verified Remediation Pro
MoldMold TestingAsbestosLead Paint
- 11
Al Water
Google rating 5.0 from 11 Google reviews
Highly Rated 2026
Water DamageMoldMold TestingFire and SmokeSewage
- 12
Roto-Rooter Plumbing & Water Cleanup24/7
Google rating 4.9 from 259 Google reviews
Top Rated 2026Most Reviewed 2026
Water DamageMoldMold TestingSewage
- 13
Servpro of North Fremont24/7
Google rating 5.0 from 50 Google reviews
Best in Fremont 2026Top Rated 2026
Water DamageMoldFire and SmokeSewageBiohazard
- 14
SERVPRO of Newark, Southwest Fremont24/7
Google rating 5.0 from 39 Google reviews Yelp 1.0
Top Rated 2026
Water DamageMoldFire and SmokeSewageBiohazard
Can You Handle It Yourself
DIY with care
Federal guidance treats about 10 square feet, roughly a 3 by 3 foot patch, as the line for a careful homeowner with gloves, goggles and an N95. Past that, or when mold is inside walls, in the HVAC system, or someone in the home has asthma or a weak immune system, hire a specialist.
Reviews on Other Sites in Fremont
On Angi (1)
Also matched here, 6 on Yelp, 3 on Facebook and 2 on HomeAdvisor. Those show on each company row above.
A BBB profile is a listing with the Better Business Bureau. It is not the same as BBB accreditation. We only list a profile when its name and city match the company.
What It Costs Around Fremont
Prices in the San Jose-Sunnyvale-Santa Clara, CA area run about 10 percent above the national average, so local jobs tend to cost more than the national figures.
| Job | Typical in Fremont | National typical |
|---|---|---|
| Mold Remediationper job, a typical professional job | $1,650 to $6,600 | $1,500 to $6,000 |
| Mold Remediationper job, an attic | $2,200 to $8,300 | $2,000 to $7,500 |
Questions to Ask Before You Hire
- Where do you think the moisture is coming from, and who fixes it?
- Will you set up containment and negative air, and how will you protect the rest of the home?
- Who does the clearance testing after the work, and is that person independent from you?
- What exactly will you remove, and what will you clean and keep?
- Is your company licensed for mold work where this job is?
Guides for This Job
- DIY with careSafe DIY Mold Cleanup for Areas Under 10 Square FeetA step by step method to clean up mold under 10 square feet safely, with the gear to buy, what to throw away, why bleach is not the default, and when to stop.
- DIY with careMold Remediation Cost in 2025 and 2026Typical 2025 to 2026 mold remediation costs by area and location, from bathrooms to attics, plus testing, containment and rebuild, and what moves the price.
- DIY with careSafe DIY Mold Cleanup for Areas Under 10 Square FeetA step by step method to clean up mold under 10 square feet safely, with the gear to buy, what to throw away, why bleach is not the default, and when to stop.
- DIY with careAttic Mold on Roof Sheathing, Causes and FixesWhy mold grows on attic roof sheathing, how to find the cause, the fixes that stop it for good, and how to tell a cosmetic stain from a roof that needs work.
Questions People Ask
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