Skip to content
Remediational Near me

Hayward, CA

Mold Inspection and Testing in Hayward, CA

Hayward, CA has 8 mold inspection and testing companies in our listings, 6 list themselves as open 24 hours and the most reviewed is Roto-Rooter Plumbing & Water Cleanup with 267 reviews.

8 Companies Doing Mold Testing Work in Hayward

  1. 1

    RestoreX of East Bay24/7

    23000 Connecticut St #8 · Hayward 0.3 mi

    No public reviews yet

    Verified Remediation Pro

    Water DamageMoldMold TestingFire and SmokeSewage

  2. 2

    FACS: Industrial Hygienists & Environmental Consultants

    21228 Cabot Blvd · Hayward 0.7 mi

    Google rating 5.0 from 13 Google reviews

    Highly Rated 2026

    MoldMold TestingAsbestos

  3. 3

    Lyon Restoration24/7

    21087 Cabot Blvd #5 · Hayward 0.8 mi

    No public reviews yet

    Verified Remediation Pro

    Water DamageMoldMold TestingFire and SmokeSewage

  4. 4

    Community First Restoration services24/7

    20975 Cabot Blvd · Hayward 0.9 mi

    Google rating 5.0 from 1 Google review

    Verified Remediation Pro

    Water DamageMoldMold TestingFire and SmokeSewage

  5. 5

    Roto-Rooter Plumbing & Water Cleanup24/7

    3524 Breakwater Ave · Hayward 1.1 mi

    Google rating 4.8 from 267 Google reviews Yelp 3.0

    Top Rated 2026Most Reviewed 2026

    Water DamageMoldMold TestingSewage

  6. 6

    California Emergency Water Damage Services

    19821 Cabot Blvd · Hayward 1.2 mi

    Google rating 4.5 from 8 Google reviews Yelp 3.1

    Verified Remediation Pro

    Water DamageMoldMold TestingFire and SmokeSewage

  7. 7

    Dry 1 Out Restoration and Construction24/7

    2536 Barrington Ct · Hayward 1.2 mi

    Google rating 4.8 from 56 Google reviews Yelp 4.2

    Top Rated 2026

    Water DamageMoldMold TestingFire and SmokeSewage

  8. 8

    Water Shield Leak Detection24/7

    3526 Investment Blvd #209 · Hayward 1.4 mi

    Google rating 4.8 from 46 Google reviews

    Top Rated 2026

    Water DamageMoldMold Testing

Hire an Independent Inspector

A mold inspector tells you whether you have a problem, where it is and what caused it. A remediator removes it. When the same company does both, it has a reason to find mold. If you can, hire an inspector who does not do remediation, and ask the remediator to follow that inspector’s written plan.

Ask the inspector what the visit includes. A good one looks for the moisture source first, uses a moisture meter and often a thermal camera, and only takes air or surface samples when the result will change what you do. After the work, a clearance test by the same independent inspector shows whether the job is done.

How to read a mold lab report

Can You Handle It Yourself

Call a pro

Home test kits that grow spores in a dish almost always grow something, because mold spores are everywhere. They cannot tell you whether you have a problem. A moisture meter and a flashlight will tell you more for less money.

Read the step by step guide

Reviews on Other Sites in Hayward

On Angi

We did not find an Angi profile we could match to a company here yet.

BBB

We did not find a BBB profile we could match to a company here yet.

Also matched here, 3 on Yelp. 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.

JobTypical in HaywardNational typical
Mold Inspection and Testingper visit, a visual inspection$225 to $700$200 to $600
Mold Inspection and Testingper visit, an inspection with samples$350 to $1,150$300 to $1,000
Mold Inspection and Testingper visit, a clearance test$350 to $900$300 to $800

Full San Francisco and Oakland cost guide

Questions to Ask Before You Hire

  1. Do you also do remediation? If so, who checks your work?
  2. How many air samples will you take, and will you take an outdoor control sample?
  3. Which lab analyzes the samples, and is it accredited?
  4. Will the report include moisture readings and photos, not only lab numbers?
  5. Are you licensed as a mold assessor where this home is?

Guides for This Job

Questions People Ask

How many mold inspection and testing companies serve Hayward?
We list 8 companies in Hayward, CA. All of them list a street address.
Which mold inspection and testing companies in Hayward are open 24 hours?
6 list themselves as open around the clock, including Roto-Rooter Plumbing & Water Cleanup, Dry 1 Out Restoration and Construction and Water Shield Leak Detection. Hours are self reported, so call to confirm someone answers at night.
Who has the best reviews in Hayward?
Among companies with at least 20 public reviews, the highest rated are Roto-Rooter Plumbing & Water Cleanup (4.8 from 267), Dry 1 Out Restoration and Construction (4.8 from 56) and Water Shield Leak Detection (4.8 from 46). A high rating from a small number of reviews is weaker evidence than a slightly lower rating from hundreds.

All restoration companies in Hayward · Mold Inspection and Testing in every market

Where We Look

Restoration Companies in Hayward, CA

Compare local restoration and remediation specialists around Hayward, CA