ESAESA InspectionsSan Diego · Southern California

MOISTURE · IAQ

Commercial Mold Inspection San Diego, CA

Moisture mapping, thermal imaging, air and surface sampling for offices, retail, industrial and multifamily buildings.

Commercial mold inspections locate moisture sources and mold growth that affect building materials, indoor air quality and occupant health — and that can become costly liability issues for owners and tenants.

We combine visual inspection, moisture meters and thermal imaging with air and surface sampling analyzed by an accredited laboratory, and deliver clear recommendations for remediation scope and verification.

ESA Inspections provides commercial mold inspection services in San Diego and throughout Southern California — San Diego, Orange, Los Angeles, Riverside, San Bernardino, Ventura, Santa Barbara, Imperial, Kern and San Luis Obispo Counties.

What's included

  • ✓Visual inspection of occupied and concealed areas
  • ✓Moisture mapping and infrared thermal imaging
  • ✓Air sampling (spore trap) with outdoor control samples
  • ✓Surface tape-lift or swab sampling
  • ✓Accredited laboratory analysis
  • ✓Remediation protocol and post-remediation clearance testing

Who needs it

  • Property managers responding to tenant complaints
  • Buyers performing due diligence on commercial buildings
  • Owners after water intrusion, leaks or flooding
  • Employers addressing indoor air quality concerns

Typical timeline

Inspection within days; lab results and report typically in 3–5 business days.

Frequently asked questions

Do you perform mold remediation?

No. To avoid conflicts of interest we inspect, write protocols and perform clearance testing; remediation is completed by independent contractors.

When should a commercial building be inspected for mold?

An inspection is appropriate after leaks or flooding, when musty odors or visible growth are reported, during due diligence, or before closing walls after remediation.

Is mold sampling always necessary?

No. Visible growth and a confirmed moisture source may be enough to recommend corrective work. Sampling is used when it can answer a defined question.

What does thermal imaging show?

Thermal imaging identifies temperature patterns that may indicate moisture or insulation conditions. Suspected moisture must be verified with other observations or a moisture meter.

How many air samples are needed?

The number depends on building size, complaint areas, HVAC zones and the inspection objective. An outdoor comparison sample is commonly collected.

Can you inspect occupied spaces?

Yes. Access, scheduling and sampling are coordinated to limit disruption, while protecting the integrity of the inspection.

What is a mold remediation protocol?

It is a written scope describing affected areas, materials to remove or clean, containment, moisture correction and verification criteria.

What is post-remediation clearance testing?

It is an independent check after remediation that may include visual review, moisture measurements and air or surface samples based on the protocol.

Finding the moisture source, not just visible growth

Mold growth is a symptom of excess moisture. A useful commercial inspection looks beyond discoloration to identify roof leaks, plumbing failures, envelope intrusion, condensation, drainage problems or elevated indoor humidity that may be sustaining growth.

The inspection combines occupant and maintenance information with visual observations, moisture measurements and thermal imaging. Areas behind finishes are approached carefully, and any recommendation for intrusive investigation is discussed with the property representative.

  • ✓Leak and incident history
  • ✓Moisture-meter readings
  • ✓Thermal patterns requiring verification
  • ✓HVAC and ventilation observations

When air or surface sampling is useful

Sampling can support an inspection when the source is uncertain, occupants report concerns, hidden growth is suspected or post-remediation conditions need to be documented. Air samples are interpreted with an outdoor comparison and the building conditions observed at the time.

No single sample establishes whether a building is healthy. Results must be considered with moisture conditions, visible growth, material damage and sampling limitations. The report explains what the data can—and cannot—show.

From inspection to remediation clearance

When remediation is needed, a written protocol can define affected materials, containment, cleaning, moisture correction and verification criteria. Keeping inspection separate from remediation helps avoid incentives to overstate the work required.

Post-remediation verification typically includes a visual assessment, moisture checks and, where appropriate, clearance sampling. The goal is to confirm that specified work is complete and that the original moisture source has been addressed before reconstruction.

Service areas