Mold Inspection & Testing
Mold Inspection & Testing in San Diego
A mold inspection should begin by evaluating the concern, the building history, moisture conditions, accessible materials, and the decision the results are meant to support.
What the inspection covers
Sampling answers a defined question
Air, surface, tape-lift and swab sampling each answer different questions. Which one applies depends on the property layout, the concern, suspected sources and air pathways — so the question is defined before samples are collected.
- A defined inspection scope and clear package price.
- Site observations and accessible-area limitations.
- Sample locations and laboratory results when sampling is performed.
- Moisture and thermal findings when included in the selected package.
- Written interpretation and remediation criteria only when included in the selected package.
Limitations
Results represent the place and time they were collected. No short-duration sample proves mold is absent throughout a building, and thermal imaging is a screening tool that shows surface temperature differences — it does not see through walls or detect moisture directly.
Open 24 hours
Schedule Mold Testing
Tell us what you are seeing, when it began and which areas are involved. Requests route to our scheduling inbox and you receive an immediate confirmation.
Residential mold testing packages
Priced before we arrive
Each package states what is included, so the scope and the cost are settled in advance.
Basic Mold Testing
Recommended starting package for a standard residential concern. When the inspector arrives, site conditions can be evaluated to determine whether additional sampling or a more extensive investigation is recommended.
- — Visual walkthrough of accessible interior areas
- — Two air samples: one interior and one exterior control sample
- — Laboratory submission and laboratory report only; interpretation is not included
- — Additional air or surface samples: $95 each
$495
Mold Testing + Moisture, Thermal Imaging & Written Protocol
Adds instrument work and a certified inspector's written interpretation of the laboratory results.
- — Includes the Basic Mold Testing package
- — Moisture detection with non-invasive meters
- — Thermal imaging for suspected hidden moisture or temperature anomalies
- — Floor-scan sketch with mapped sample locations
- — Written interpretation of laboratory results by a certified inspector
- — Mold Remediation Protocol (MRP) when elevated findings and site conditions support remediation
$595
Home Building Science Mold Investigation
A full building-science investigation for complex, recurring or unexplained conditions.
- — Three to six hours of on-site evaluation, including interior and exterior conditions
- — Moisture mapping and thermal imaging throughout the authorized inspection areas
- — Review of relevant HVAC, roofing, drainage and ventilation conditions
- — Room-by-room documentation with photographs and an annotated floor plan
- — Matterport virtual walkthrough for spatial documentation
- — Air, surface, tape-lift or swab sampling as needed to answer defined inspection questions
- — Comprehensive written report with interpreted findings and an MRP when applicable
$1,500–$3,500
Pricing note
Pricing applies to standard residential properties. Commercial properties, multifamily sites, unusually large homes, litigation-related inspections, or complex building conditions may require a custom proposal.
Rush options
Next-day laboratory turnaround: add $55 per sample when available. Rush written-report delivery: add $195. Rush timing begins after the site visit, required information, and laboratory results are available.
FAQ
Questions asked before scheduling
Straight answers about sampling, protocols and turnaround.
No. Origin evaluates building and environmental conditions; it does not diagnose illness or determine individual medical risk.
No single short-duration sample proves that mold is absent throughout a building. Results represent the sampled place and time and must be considered with site conditions.
The number depends on the property layout, concern, suspected sources, air pathways, and the question the results must answer.
A Mold Remediation Protocol identifies the areas, materials, controls, cleaning objectives, and verification criteria supported by the investigation.
Yes, when the laboratory can accommodate the request. Next-day laboratory service is $55 additional per sample, and rush report delivery is $195.
Local inspection coverage
Mold inspection and testing across San Diego County
From Rancho Bernardo and Poway to La Jolla, Del Mar and North County, each local guide explains how property type, construction era and moisture exposure shape the investigation.
View All Service AreasSchedule mold testing in San Diego.
Tell us what is happening, when it began, and which areas are involved. Serving San Diego County.