Hayward, CA
Mold Remediation in Hayward, CA
Hayward, CA has 18 mold remediation companies in our listings, 11 list themselves as open 24 hours and the most reviewed is Roto-Rooter Plumbing & Water Cleanup with 267 reviews.
18 Companies Doing Mold Work in Hayward
- 1
All Property Tech
Google rating 4.8 from 20 Google reviews Yelp 3.7
Highly Rated 2026
Water DamageMoldFire and Smoke
- 2
RestoreX of East Bay24/7
No public reviews yet
Verified Remediation Pro
Water DamageMoldMold TestingFire and SmokeSewage
- 3
BluSky Restoration Contractors24/7
Google rating 4.7 from 20 Google reviews BBB profile
Highly Rated 2026
Water DamageMoldFire and SmokeStormContents
- 4
ATI Restoration24/7
Google rating 4.2 from 53 Google reviews Yelp 3.0
Verified Remediation Pro
Water DamageMoldFire and SmokeSewageBiohazard
- 5
FACS: Industrial Hygienists & Environmental Consultants
Google rating 5.0 from 13 Google reviews
Highly Rated 2026
MoldMold TestingAsbestos
- 6
Lyon Restoration24/7
No public reviews yet
Verified Remediation Pro
Water DamageMoldMold TestingFire and SmokeSewage
- 7
JJ&S Environmental Services - Hayward24/7
Google rating 4.9 from 35 Google reviews
Top Rated 2026
MoldBiohazardAsbestosLead Paint
- 8
United Water Restoration Group of Hayward24/7
Google rating 5.0 from 26 Google reviews BBB profile
Best in Hayward 2026Top Rated 2026
Water DamageMoldFire and SmokeSewageStorm
- 9
Community First Restoration services24/7
Google rating 5.0 from 1 Google review
Verified Remediation Pro
Water DamageMoldMold TestingFire and SmokeSewage
- 10
Envirocheck, Inc.
Google rating 4.3 from 6 Google reviews Yelp 4.4 · HomeAdvisor 4.7
Verified Remediation Pro
MoldAsbestos
- 11
Roto-Rooter Plumbing & Water Cleanup24/7
Google rating 4.8 from 267 Google reviews Yelp 3.0
Top Rated 2026Most Reviewed 2026
Water DamageMoldMold TestingSewage
- 12
Hayward Fire Damage Service
No public reviews yet
Verified Remediation Pro
Water DamageMoldFire and Smoke
- 13
Purfresh Clean
Google rating 5.0 from 7 Google reviews Facebook 4.3
Verified Remediation Pro
MoldFire and SmokeOdor
- 14
California Emergency Water Damage Services
Google rating 4.5 from 8 Google reviews Yelp 3.1
Verified Remediation Pro
Water DamageMoldMold TestingFire and SmokeSewage
- 15
Dry 1 Out Restoration and Construction24/7
Google rating 4.8 from 56 Google reviews Yelp 4.2
Top Rated 2026
Water DamageMoldMold TestingFire and SmokeSewage
- 16
Allied Environmental Inc
Google rating 4.0 from 1 Google review
Verified Remediation Pro
MoldLead Paint
- 17
Water Shield Leak Detection24/7
Google rating 4.8 from 46 Google reviews
Top Rated 2026
Water DamageMoldMold Testing
- 18
1-800 Water Damage of Hayward and Dublin, CA24/7
Google rating 4.9 from 58 Google reviews Yelp 5.0
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 Hayward
On Angi
We did not find an Angi profile we could match to a company here yet.
Have a BBB Profile (2)
Also matched here, 7 on Yelp, 1 on Facebook and 1 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 Hayward
Prices in the San Francisco-Oakland-Fremont, CA area run about 16 percent above the national average, so local jobs tend to cost more than the national figures.
| Job | Typical in Hayward | National typical |
|---|---|---|
| Mold Remediationper job, a typical professional job | $1,750 to $6,900 | $1,500 to $6,000 |
| Mold Remediationper job, an attic | $2,300 to $8,700 | $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
How many mold remediation companies serve Hayward?
Which mold remediation companies in Hayward are open 24 hours?
Who has the best reviews in Hayward?
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Restoration Companies in Hayward, CA
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