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Lancaster, CA

Mold Inspection and Testing in Lancaster, CA

Lancaster, CA has 8 mold inspection and testing companies in our listings, 8 list themselves as open 24 hours and the most reviewed is Rainy Day Environmental Solutions with 114 reviews.

8 Companies Doing Mold Testing Work in Lancaster

  1. 1

    ServiceMaster Restore By Precision24/7

    42342 10th St W Ste A · Lancaster 0.5 mi

    Google rating 5.0 from 28 Google reviews

    Top Rated 2026

    Water DamageMoldMold TestingFire and SmokeContents

  2. 2

    Renew Restoration24/7

    42231 6th St W #205 · Lancaster 0.8 mi

    Google rating 4.9 from 83 Google reviews Thumbtack 4.9 · BBB profile

    Top Rated 2026

    Water DamageMoldMold TestingFire and SmokeSewage

  3. 3

    Boardwalk Contractors, Inc24/7

    42545 Wall St #101 · Lancaster 1.0 mi

    Google rating 4.8 from 81 Google reviews Yelp 4.2

    Top Rated 2026

    Water DamageMoldMold TestingFire and SmokeSewage

  4. 4

    Scientific Restoration Specialists Inc.24/7

    2010 W Ave K #465 · Lancaster 1.4 mi

    Google rating 4.6 from 71 Google reviews Yelp 2.6 · BBB profile

    Highly Rated 2026

    Water DamageMoldMold TestingFire and SmokeSewage

  5. 5

    TMJ Restoration24/7

    44315 Elm Ave #3 · Lancaster 2.0 mi

    Google rating 4.4 from 13 Google reviews

    Verified Remediation Pro

    Water DamageMoldMold TestingFire and SmokeSewage

  6. 6

    411 Restoration24/7

    45326 37th St W · Lancaster 3.3 mi

    Google rating 4.8 from 32 Google reviews Yelp 5.0

    Top Rated 2026

    Water DamageMoldMold TestingFire and SmokeSewage

  7. 7

    Rainy Day Environmental Solutions24/7

    Service area business · Lancaster 8.8 mi

    Google rating 5.0 from 114 Google reviews

    Top Rated 2026

    Water DamageMoldMold TestingFire and SmokeSewage

  8. 8

    King Master Water Damage Restoration24/7

    49505 60th St W · Lancaster 9.9 mi

    Google rating 5.0 from 22 Google reviews Yelp 5.0

    Highly Rated 2026

    Water DamageMoldMold TestingFire and Smoke

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 Lancaster

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 and 1 on Thumbtack. 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 Lancaster

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 LancasterNational 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 Lancaster?
We list 8 companies in Lancaster, CA. 1 of them work from a service area without a public storefront.
Which mold inspection and testing companies in Lancaster are open 24 hours?
8 list themselves as open around the clock, including Rainy Day Environmental Solutions, Renew Restoration and Boardwalk Contractors, Inc. Hours are self reported, so call to confirm someone answers at night.
Who has the best reviews in Lancaster?
Among companies with at least 20 public reviews, the highest rated are Rainy Day Environmental Solutions (5.0 from 114), ServiceMaster Restore By Precision (5.0 from 28) and King Master Water Damage Restoration (5.0 from 22). A high rating from a small number of reviews is weaker evidence than a slightly lower rating from hundreds.

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Restoration Companies in Lancaster, CA

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