Bay Area · all of California
Mold Air Quality Testing in the Bay Area and California
Indoor air sampling for mold spores with an outdoor control sample, plus moisture readings, analyzed by an accredited lab so you know whether indoor levels are elevated.
Quick answer
ClearPoint Environmental offers mold air quality testing in the Bay Area and California: indoor air samples compared with an outdoor control, analyzed by an accredited lab with results in 24–48 hours. Quotes start at $475 with CLEAR50 applied, +$55 per additional sample. We never sell remediation.
- From $475 with CLEAR50 ($50 off) applied · $475–$625 by scope · +$55 per additional sample
- Same-day or next-day visit · lab results in 24–48 hours
- Testing is all we do. We never quote, sell or perform removal — our only job is an honest result.
Request a tester
Where is the property?
All of California · no account, no card. You see the price before anything is booked.
When you need mold air quality testing
- A musty smell with no visible mold
- After a leak, flood or storm water got into walls, floors or a crawlspace
- Allergy or breathing symptoms that ease when you leave the home
- Before buying, renting or re-occupying a space, or after remediation (clearance testing)
What your report includes
- • Spore counts per room and outdoors
- • Mold types found (for example Aspergillus/Penicillium, Stachybotrys)
- • Moisture readings and photos
- • What the numbers mean and next steps
How it works
- 1
Book
Enter your address, choose Mold air quality test and see your price.
- 2
Inspect
The sampler checks moisture and takes indoor air samples plus an outdoor control.
- 3
Lab
An accredited lab counts and identifies spores on each sample.
- 4
Report
You get spore counts by room compared with outdoors, in plain English.
Mold Air Quality Testing by city
Bay Area
More of California
Serving the Bay Area and California
ClearPoint Environmental Fremont
4127 Bay StFremont, CA 94538(510) 901-5743
Monday–Sunday · Open 24 hours
Get directionsGuides and articles
- Mold Concerns After Bay Area Winter Storms: When to Prioritize Air Testing
- What Does a Mold Air Quality Test Cost in California?
- Mold Air Testing vs. Surface Swab Sampling: Choosing the Right Method
- Mold Testing for California Renters and Landlords: Habitability and Next Steps
- Musty Smell but No Visible Mold: How Air Sampling Finds Hidden Growth
- Why Independent Post-Remediation Mold Clearance Testing is Essential
Quick answers
- How much does professional mold testing cost in California?
- How long does it take to get mold air quality results?
- When is mold testing necessary for a home or office?
- What do the numbers in a mold testing report mean?
- What are the rights of California renters regarding mold?
- Should I get a mold inspection before buying a house?
FAQ
Mold Air Quality Testing questions, answered
How much does a mold air quality test cost in California?
A standard mold air test starts at $475 with CLEAR50 applied and stays within $475–$625. Each additional room or sample is $55.
Why take an outdoor sample?
Outdoor air always has some spores. Comparing indoor with outdoor shows whether mold is growing inside the home.
Do you do mold remediation?
No. We only test, so we never profit from telling you there is a problem. Our clearance tests also check remediators' work independently.
How long do mold results take?
Lab results normally arrive in 24–48 hours after the visit.
Customer reviews
Rated 5.0 out of 5 across California
119 verified reviews from homeowners, property managers, contractors and insurance adjusters who needed certified answers fast.
5.0
119 reviews
- 5 out of 5 stars
High-rise ceiling texture
The HOA required documentation before any scraping. The report satisfied the board on the first pass.
Owen P. · Santa Monica ·
- 5 out of 5 stars
Professional start to finish
Badged, uniformed, and every sample was photographed and documented in the final PDF.
Bianca F. · Richmond ·
- 5 out of 5 stars
Pre-demo survey done right
Full survey before a garage teardown. Our contractor said it was the most complete one he had seen all year.
Grant W. · Santa Rosa ·
- 5 out of 5 stars
Kind and calm
I have asthma and was anxious about it. They explained the difference between intact and friable material clearly.
Adriana Q. · South San Francisco ·
- 5 out of 5 stars
Efficient
On time, tidy, report overnight. Easy transaction from start to finish.
Trevor H. · Stockton ·
- 5 out of 5 stars
Attic insulation checked
Vermiculite concern in a 1970s attic. They sampled it safely and gave us a clear next step.
Monica Z. · Vacaville ·