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Northridge, CA

Mold Inspection and Testing in Northridge, CA

Northridge, CA has 8 mold inspection and testing companies in our listings, 5 list themselves as open 24 hours and the most reviewed is Paul Davis Restoration of San Fernando Valley with 87 reviews.

8 Companies Doing Mold Testing Work in Northridge

  1. 1

    Water Damage Services Northridge24/7

    9353 Reseda Blvd · Northridge 0.5 mi

    Google rating 5.0 from 4 Google reviews

    Verified Remediation Pro

    Water DamageMoldMold TestingFire and SmokeSewage

  2. 2

    Alchemist mold testing

    18433 Roscoe Blvd #202 · Northridge 0.8 mi

    Google rating 4.8 from 76 Google reviews

    Top Rated 2026

    Mold TestingAsbestosLead Paint

  3. 3

    SOS Water and Fire Restoration

    8500 White Oak Ave · Northridge 1.1 mi

    Google rating 4.5 from 10 Google reviews Yelp 3.2 · Facebook 5.0 · BBB profile

    Highly Rated 2026

    Water DamageMoldMold TestingFire and SmokeSewage

  4. 4

    Paul Davis Restoration of San Fernando Valley24/7

    19420 Business Ctr Dr · Northridge 1.2 mi

    Google rating 4.9 from 87 Google reviews HomeAdvisor 5.0

    Top Rated 2026Most Reviewed 2026

    Water DamageMoldMold TestingFire and SmokeSewage

  5. 5

    Steamatic San Fernando Valley24/7

    8733 Shirley Ave · Northridge 1.3 mi

    Google rating 4.2 from 28 Google reviews Yelp 3.7 · BBB profile

    Verified Remediation Pro

    Water DamageMoldMold TestingFire and SmokeSewage

  6. 6

    PuroClean of Northridge24/7

    18543 Devonshire St #800 · Northridge 1.8 mi

    Google rating 5.0 from 18 Google reviews Yelp 4.7

    Highly Rated 2026

    Water DamageMoldMold TestingFire and SmokeSewage

  7. 7

    Rainbow Restoration of Northridge24/7

    17042 Devonshire St #202-B · Northridge 2.5 mi

    Google rating 5.0 from 22 Google reviews Yelp 4.4 · HomeAdvisor 5.0

    Highly Rated 2026

    Water DamageMoldMold TestingFire and Smoke

  8. 8

    24H Mold Inspection of Porter Ranch

    Service area business · Northridge 3.2 mi

    Google rating 5.0 from 1 Google review

    Verified Remediation Pro

    Mold 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 Northridge

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, 4 on Yelp, 2 on HomeAdvisor, 1 on Thumbtack and 1 on Facebook. 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 Northridge

Prices in the Los Angeles-Long Beach-Anaheim, CA area run about 14 percent above the national average, so local jobs tend to cost more than the national figures.

JobTypical in NorthridgeNational 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 Los Angeles County 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 Northridge?
We list 8 companies in Northridge, CA. 1 of them work from a service area without a public storefront.
Which mold inspection and testing companies in Northridge are open 24 hours?
5 list themselves as open around the clock, including Paul Davis Restoration of San Fernando Valley, Steamatic San Fernando Valley and Rainbow Restoration of Northridge. Hours are self reported, so call to confirm someone answers at night.
Who has the best reviews in Northridge?
Among companies with at least 20 public reviews, the highest rated are Rainbow Restoration of Northridge (5.0 from 22), Paul Davis Restoration of San Fernando Valley (4.9 from 87) and Alchemist mold testing (4.8 from 76). A high rating from a small number of reviews is weaker evidence than a slightly lower rating from hundreds.

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

Where We Look

Restoration Companies in Northridge, CA

Compare local restoration and remediation specialists around Northridge, CA