What To Ask A Mold Inspection Company — 10 Questions Before You Hire

By Author: BayAreaMoldPros
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Hiring a mold inspection company is an important decision—one that impacts your property, your health, and your long-term remediation costs. Not all inspectors follow the same standards, use the same tools, or offer the same level of expertise. Asking the right questions before you hire ensures you receive a credible, unbiased, and scientifically accurate assessment of your mold problem.

Whether you’re a homeowner, landlord, real estate professional, or property manager, here are the 10 essential questions to ask any mold inspection/testing company before signing a contract.

1. Are You a Certified Mold Inspector?

Certification is the first sign of professionalism. A qualified inspector should have training from recognized organizations in mold assessment, indoor air quality, and building science.

Ask specifically:

Which certifications do you hold?
How many years of experience do you have?
Do you specialize in residential, commercial, or both?
Experienced and certified inspectors—like Rick Bruce of Bay Area Mold Pros—provide reliable, standards-based inspections backed ...
... by scientific expertise.

2. Do You Use an Independent, Accredited Laboratory for Mold Testing?

This is one of the most important questions.

A credible mold inspection company should:

Send all samples to a third-party accredited laboratory
Use labs certified by AIHA, IAS, or similarly recognized bodies
Never analyze samples in-house
Independent lab testing eliminates bias and ensures results are legitimate, defensible, and accurate.

3. What Exactly Is Included in the Inspection?

Not all inspection are equal. A thorough mold inspection should include:

Full interior visual assessment
Humidity and temperature readings
Moisture meter testing of walls, floors, and building materials
Air samples
Surface (swab or tape lift) samples
Infrared scanning (if included)
Inspection of areas with past leaks or water damage
Make sure you understand what is included and what is considered an add-on service.

4. Will You Inspect the Attic, Crawlspace, Basement, and HVAC System?

These are common mold hotspots, but some inspectors charge extra or skip them entirely.

Clarify whether the inspection includes:

Attics and insulation
Crawlspaces and subflooring
Basements, storage rooms, utility areas
Air ducts and HVAC systems
Roof leaks or exterior drainage issues
These areas often reveal the source of mold problems—not just the symptoms.

5. How Many Samples Will You Take, and Where?

Some companies take the bare minimum number of samples to cut costs. Others take unnecessary samples to increase fees.

Ask:

How many air samples will be taken inside?
Will you take an outdoor control sample? (This is essential.)
Will you take swab/tape samples of visible growth?
How do you decide where samples go?
A qualified inspector bases sampling decisions on findings, not upselling.

6. What Kind of Report Will I Receive?

A professional mold inspection should include a clear, detailed written report, not just lab results.

The report should contain:

Summary of findings
Photos of affected areas
Lab analysis with interpretation
Moisture readings and humidity data
Source identification
Clear conclusions on whether mold is present
Recommendations for remediation and moisture control
Ask for a sample report before hiring to ensure you’ll receive something useful—not a confusing data printout.

7. Will You Provide a Remediation Plan If Mold Is Found?

A good mold inspection company should offer actionable recommendations, including:

What materials need removal
What areas require cleaning
How to fix moisture sources
Ventilation improvements
Steps a remediation contractor should follow
However, there’s an important distinction:

Inspectors should not perform the remediation themselves.

Why? To avoid conflict of interest.

8. Do You Also Do Mold Remediation? If So, Is There a Conflict of Interest?

Be cautious of companies that inspect and remediate, because they profit from finding mold.

Independent testing companies like Bay Area Mold Pros provide unbiased mold inspection and do not financially benefit from recommending remediation. This ensures the results are honest and not exaggerated for profit.

If a company does both, ask:

How do you avoid conflict of interest?
Do you provide a written guarantee of impartiality?
9. Can You Identify the Cause of the Mold, Not Just the Mold Itself?

A mold report is useless unless it identifies the source of moisture.

Ask whether the inspector evaluates:

Plumbing leaks
Roof leaks
Drainage issues
Humidity problems
HVAC system imbalance
Poor ventilation
Water intrusion patterns
A good inspector should consider the building as a whole—not just the mold.

10. Do You Carry Liability Insurance?

Professional liability insurance protects both you and the inspector. Mold inspection involves entering attics, crawlspaces, and structural areas—so coverage matters.

Ask for verification of:

General liability insurance
Errors and omissions (E&O) coverage
Hiring an uninsured inspector exposes you to unnecessary risk.

Choose a Certified Mold Inspector You Can Trust

A mold inspection is an investment in your property’s health and safety. Asking the right questions ensures you hire a qualified, ethical, and experienced professional.

Bay Area Mold Pros—led by certified mold inspector Rick Bruce—provides thorough, unbiased mold inspection, mold testing, and detailed reporting for homes and commercial buildings. All samples are processed by accredited laboratories, and every inspection includes clear findings, photos, and practical recommendations.

Serving San Francisco, San Mateo, Santa Clara, Marin, Alameda, and Contra Costa counties, Bay Area Mold Pros is the trusted choice for reliable mold inspection and testing.

Request an inspection today at (650) 762-6228 or visit Bay Area Mold Pros to book your service.

Bay Area Mold Pros is a locally-owned and operated company that specializes in mold testing and mold inspection for residential and commercial properties.