San Mateo County · Bay Area
Mold Air Quality Testing in San Mateo, CA
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 San Mateo, CA: 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.
Mold Air Quality Testing in San Mateo: what's different here
Local homes
Features a mix of luxury estates, mid-century modern homes like Eichlers, and multi-family residential complexes. Many neighborhoods were developed during the mid-1900s.
What we see in San Mateo
Coastal influence and seasonal storms can lead to moisture intrusion in older foundations and roofs. Hidden mold is often found behind walls following plumbing failures.
Neighborhoods we visit often: Hillsdale, Baywood, San Mateo Park, North Shoreview, and every other part of San Mateo and San Mateo County.
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.
Serving San Mateo, CA
ClearPoint Environmental San Mateo
400 S El Camino RealSan Mateo, CA 94402(650) 667-7674
Monday–Sunday · Open 24 hours
Get directionsFAQ
Mold Air Quality Testing in San Mateo: questions
How much does mold air quality testing cost in San Mateo?
From $475 with CLEAR50 ($50 off) applied · $475–$625 by scope · +$55 per additional sample. The price is shown before anyone is dispatched.
How fast can you test in San Mateo?
Same-day or next-day visit · lab results in 24–48 hours. Call (650) 667-7674 for the earliest window.
Which office serves San Mateo?
ClearPoint Environmental San Mateo, 400 S El Camino Real, San Mateo, CA 94402, (650) 667-7674. We cover every neighborhood in San Mateo County.
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.
Mold Air Quality Testing by city
Bay Area
More of California
Guides and articles
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?
Customer reviews
Rated 5.0 out of 5 by California customers
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
1972 townhome
Textured ceiling and vinyl in the same job. Both sampled in one visit, both reported clearly.
Simone P. · San Jose ·
- 5 out of 5 stars
Barn conversion project
Unusual structure, and they still identified and sampled everything that mattered.
Wesley K. · San Mateo ·
- 5 out of 5 stars
Answered a weekend call
Left a message Saturday and got a callback within the hour with a Monday morning slot.
Tanya B. · San Rafael ·
- 5 out of 5 stars
Straightforward and safe
He wetted every sample point and bagged the debris on the spot. Very careful work.
Hector L. · Santa Monica ·