Mold inspection services in Southern California thermal imaging, moisture mapping, written report
Gallagher Restoration Co. performs professional mold inspections using thermal imaging cameras, calibrated moisture meters, and borescope access to wall and ceiling cavities—delivering a written report with photos and clear recommendations across five Southern California counties.
Typical arrival across 5-county SoCal
Answered by a real person
Riverside · SB · OC · SD · LA
Serving Southern California since 2009
What is a professional mold inspection?
A professional mold inspection is a systematic on-site investigation to determine whether mold is present, where it is located, and what moisture conditions are sustaining it. The inspection does not require cutting open walls or running laboratory tests—though it may recommend both as follow-up. A Gallagher inspection uses three tools a consumer cannot replicate: a thermal imaging camera that detects temperature differentials indicating moisture behind surfaces without invasive access, calibrated moisture meters that measure moisture content inside walls and floors, and a borescope that allows visual access to wall and ceiling cavities through a small entry point. The deliverable is a written report with photographs, moisture readings, and a clear recommendation—whether that is clearance, mold testing, or remediation. Inspection is often the first step before deciding whether laboratory testing or active remediation is warranted.
How Gallagher conducts a mold inspection
Client interview and history review
The technician starts with a brief conversation about the property's water history—past leaks, flooding, repairs, and the timeline of any symptoms or odors. Water event history narrows the inspection focus to the highest-probability areas before equipment is deployed.
Thermal imaging and visual survey
A thermal imaging camera scans walls, ceilings, and floors for temperature differentials that indicate moisture intrusion behind surfaces. Visible mold growth, water staining, and material degradation are photographed and logged with location notes.
Moisture measurement and cavity access
Calibrated moisture meters verify readings at flagged locations. Where the thermal scan indicates moisture inside a wall or ceiling cavity, a borescope provides direct visual confirmation through a small-diameter access point that requires no patching in most cases.
Written report and recommended next steps
The inspection closes with a written report: photographs of all findings, moisture readings at each test point, and a clear written recommendation—clearance, mold testing with lab analysis, or active remediation. If remediation is recommended, the report becomes the scope basis for the Gallagher remediation team.
When a mold inspection makes sense
A mold inspection answers the where-and-how-bad question before committing to lab testing or remediation. These are the most common triggers.
Musty odor without visible mold
An earthy or sour smell that persists in a room or throughout the home is the most reliable early indicator of active mold growth in a concealed space. Inspection locates the source before it surfaces.
Past water damage in walls, floors, or ceilings
Any structure that experienced a plumbing leak, roof intrusion, or appliance overflow that was not professionally dried warrants inspection of the affected cavities. The 48-to-72-hour colonization window is shorter than most people expect.
Pre-purchase due diligence
Buyers purchasing a property with any history of water damage—or a general inspection that flagged moisture—need mold inspection results before closing. A written report with thermal imaging data is accepted documentation in California real estate transactions.
Unexplained health symptoms tied to time at home
Respiratory irritation, allergic responses, or fatigue that improve when occupants leave and return when they are home are a documented pattern in structures with elevated mold. Inspection is the first step to determine whether the building is the cause.
Visible mold to determine extent before remediation
Visible surface mold is often the small portion of a larger colony. Inspection using thermal imaging and borescope access establishes the actual extent of growth before a remediation scope is priced—which prevents scope surprises once walls are opened.
Why homeowners across Southern California choose Gallagher for mold inspection
A mold inspection is only as useful as the equipment and training behind it. A visual walk-through without thermal imaging and moisture measurement misses the majority of concealed mold because mold grows where moisture collects—inside wall cavities, beneath flooring, above ceiling tile—not where it is easiest to look. Gallagher Restoration Co. inspects with thermal imaging cameras, calibrated moisture meters, and borescope access on every job. The written report includes photographs and specific moisture readings, not general observations. Recommendations are direct: clearance, proceed to lab testing, or remediate. If remediation is the recommendation, Gallagher moves from inspection into remediation without a contractor handoff—same team, same documentation, no restart. Gallagher has performed mold inspections across Riverside, San Bernardino, Orange, San Diego, and Los Angeles counties for more than 15 years. Call (951) 541-0034 to schedule an inspection. The initial on-site assessment is provided at no charge.
Mold inspection pricing—what to expect
Mold inspection in Southern California typically ranges from $250 to $650 for a standard residential property. The lower end covers a focused inspection of a single area of concern—a bathroom, a basement wall, a specific ceiling—using thermal imaging and moisture measurement. The upper end reflects a comprehensive whole-house inspection of a larger property, or a job where borescope access is required in multiple locations. Commercial properties and larger residential buildings are priced by scope. If inspection findings indicate that laboratory testing is needed, mold testing can be added on the same visit or scheduled as a follow-up; testing costs are separate and range from $350 to $1,200 depending on the number of samples. There is no charge for the initial conversation to scope the inspection.
Also handled by the same crew
Mold inspection services in Southern California — questions we hear.
What is the difference between a mold inspection and mold testing?
A mold inspection is a physical, on-site investigation using thermal imaging, moisture meters, and visual assessment to locate mold and identify moisture sources. Mold testing adds laboratory analysis: air and surface samples submitted to an accredited lab that returns a report identifying mold species and spore concentrations. Inspection tells you where the problem is; testing tells you exactly what species are present and at what levels. Inspection typically comes first; testing follows when lab data is needed for insurance, legal, or health purposes.
Can you inspect for mold without cutting into walls?
Yes, in most cases. Thermal imaging cameras detect moisture differentials behind surfaces without invasive access. A borescope—a thin, flexible camera—can access wall and ceiling cavities through a small-diameter hole that requires no patching in standard drywall. Gallagher uses both tools routinely before recommending any invasive access.
How long does a mold inspection take?
A focused inspection of a single area of concern typically takes 60 to 90 minutes on-site. A comprehensive whole-house inspection of a larger property takes two to three hours. The written report is typically delivered within one to two business days of the inspection.
Should I get a mold inspection before buying a home in Southern California?
A mold inspection is advisable for any property with a documented history of water damage, a general inspection that flagged moisture or humidity concerns, or visible staining on ceilings and walls. Southern California's periodic heavy rain seasons and aging housing stock in the Inland Empire and San Gabriel Valley mean moisture intrusion is common in homes that have not had recent plumbing or roof work. A thermal imaging inspection is the most efficient way to know what is behind the surfaces before closing.
Trusted Across Southern California
“I really appreciate the work done by David Schumm of Gallagher Restoration during a recent AC condensation leak in my attic. David was incredibly professional, communicative, and easy to work with through the whole process. He made a stressful situation so much easier to manage, taking the time to explain everything clearly and ensuring our home was taken care of properly. I highly recommend David and the team at Gallagher Restoration if you ever need reliable, honest service. Thank you.”
AE Galvan“I can’t say enough good things about Gallagher Restoration. I am extremely happy and satisfied with the work and effort from their entire team. From day one, everyone was professional, helpful, and knowledgeable. Anytime I had questions, they either had the answers right away or took the initiative to find them and point me in the right direction. Their communication was consistent and timely—even after 12 months into this process, they continued to respond quickly and support me when I needed…”
Saul Huerta“I came home to leak from the upstairs bathroom. Called Gallagher Restoration after hours. Nick was so nice and confirmed they would be out early the next morning. Nick and Daniel were respectful of our home, made sure to protect everything. The communication was outstanding throughout the entire process. I would highly recommend Gallagher Restoration Jennifer, Nick, and Daniel.”
DeAnn Smith“I have really bad water damage to my flooring in my bathroom. Gallagher Restoration was recommended by my property management company and I would also recommend Gallagher Restoration as well because they truly delivered. The first person on the team that came out to my home for water damage to my flooring in my bathroom was Nick, Nick was friendly and very polite. The day that Nick showed up to my house he was on time like he said he would be and very respectful. Nick communicated with me…”
Lateraa Frierson“What a life saver! Our home had a slab leak and Nick came out that night and vacuumed up water from half of my house and put in blowers, dehumidifiers and air scrubbers. He was here until 10:00pm! Caleb was here every single day moisture testing the walls and adjusting fans. Nick and his supervisor Juan checked in and showed up often! What an amazing team! Will recommend them over and over again!”
Debbie KramerProperty Damage? Gallagher Restoration Is Ready to Help.
When water, fire, mold, or another emergency damages your property, getting professional help quickly matters. Contact Gallagher Restoration for fast, experienced restoration services throughout Southern California.
