ERMI & HERTSMI-2 Dust Testing in San Jose, CA
qPCR dust analysis, collected correctly and interpreted honestly — for households in San Jose and across Santa Clara County, held to the sensitized-occupant standard and independently verified.
Why this matters in San Jose
Local building knowledge is the difference between finding the source and billing for a search. Here is how the San Jose housing picture shapes this work, and how matching gets it done to a written standard across Santa Clara County.
Winter rains meet dry summers; crawl-space stock stays damp through the wet season. Post-war ranch homes on vented crawl spaces with aging galvanized supply plumbing.
Where the work starts in San Jose
- Vented crawl-space humidity, insulation contact, and subfloor moisture gradients
- Original supply-line runs and angle stops inside wet walls
- Shower and tub assemblies past their service life
- Water-heater closets and laundry connections
- Attic-side bath-fan ducting and termination
What's included
- Collection planning: composite versus room-specific sampling matched to the question
- Proper collection sites: undisturbed dust reservoirs, not floors or fresh surfaces
- Accredited-lab qPCR analysis of water-damage and outdoor marker species
- Species-level interpretation against building findings, not just the composite score
- Baseline documentation for valid post-remediation comparison
- A single hallway air cassette sold as a building screen
- Scores interpreted without any building context
- No documentation of collection sites and method
A defensible answer to 'is this building a problem' with species-level detail that directs the inspection — and a baseline your final clearance will be measured against.
Common questions
How does matching work for ermi & hertsmi-2 dust testing in San Jose?
Tell us about your building and situation through the intake form. We match you with providers serving Santa Clara County who have been vetted on containment discipline, fine-particle competence, written-scope transparency, and willingness to be independently verified. Matching is free for households.
Why does local building knowledge matter in San Jose?
Winter rains meet dry summers; crawl-space stock stays damp through the wet season. Post-war ranch homes on vented crawl spaces with aging galvanized supply plumbing. Providers who work these exact failure modes find sources faster and scope work more accurately than generalists applying a national template.
What standard is the work held to?
The sensitized-occupant standard: written scopes, verified negative-pressure containment where remediation is involved, no fogging or biocide-and-leave treatments, chemical disclosure, and third-party verification as the release condition for final payment.
Get matched for ermi & hertsmi-2 dust testing in San Jose
Tell us about your house and your situation. We match you with contractors vetted on containment discipline, fine-particle competence, and willingness to be independently verified — in your area, at no cost to you.
Get matched with a vetted contractorINDEPENDENT · NO COST TO HOMEOWNERS · NATIONWIDE