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Mold inspection and mold testing services in Los Angeles California - AMI is California's oldest and most trusted mold inspection company with CESB accredited certifications.
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Inspections & Testing
Post-Remediation Testing
Mold Health Effects
Mold & Property Damage
Mold In Vehicles
Mold Scams & Rip-Offs
Pictures, Videos & Links
Mold Doctors & Lawyers
General Mold Information
Mold Inspector's Blog
What Is a Mold Inspection
What Is Mold Testing
Detecting Mold Problems
The Role of Infrared


Los Angeles mold scams! Do be the next victim of fruadulent mold scams! Click here to learn about common mold scams right here in Los Angeles.

Leary about those ads offering "free mold inspections" from contractors playing both sides of the fence??    You should be!
Before calling a mold inspector take a moment to read this and avoid being the next victim of the mold common mold scams and fraudulent business practices being perpetrated right now in your community. Click here for details.


Mold is not a problem in old properties. Mold can be found in brand new homes and buildings too, and not just in Los Angeles. If you suspect you have a mold problem in your home, workplace, school, etc., call AMI today for information about mold inspection and mold testing services in Los Angeles and surrounding areas.

Think your property has to be old to have mold? Think again! 
Watch one family's story about mold in their brand new home in this video shown on FOX News.


If your mold inspection is not conducted with infrared thermal imaging, your mold inspection may be inconclusive.

Picture of mold causing moisture from a second floor bathroom. AMI performs mold inspections in Los Angeles with thermal imaging camera technology. Call today for details.

Moisture detected in a first floor bathroom ceiling caused by a leaking shower on the second floor.

Picture of water intrusion from a roof leak in this Los Angeles home. AMI performs mold inspections in Los Angeles with free thermal imaging camera technology.

Moisture detected in a first floor ceiling caused by an improperly sealed shower door gasket above.

Picture of exterior water intrusion causing interior water damage and mold growth in Los Angeles. Call for details about free infrared camera use in all AMI mold inspections.

Moisture detected in a bedroom ceiling caused by a roof leak.

Picture of water damage and mold growing in a ceiling cavity from a leak in second floor plumbing. Moisture detected with infrared cameras free with every AMI mold inspection in Los Angeles County.

Moisture detected in a first floor kitchen ceiling caused by a leak under a second floor kitchen sink.

A moldy odor was all that was noticable in this bedroom closet. AMI's mold inspection with free thermal imaging detected moisture building up in the ceiling drywall caused by a roof leak in this Los Angeles apartment.

Moisture detected in a bedroom closet ceiling caused by a roof leak.

Picture of moisture retention in ceiling drywall detected by AMI's infrared camera free with every Los Angeles mold inspection.

Moisture detected in a bedroom ceiling caused by an improperly installed drain in a second floor deck.


Picture of mold growing in a car. Mold can grow in cars, trucks, RV's, motor homes, boats, airplanes, and buildings. Does your car stink when you turn the air conditioner or heater on? It might be full of mold. AMI performs mold testing on all vehicles in Los Angeles California
Can Mold In Your Vehicle
Cause Fungal Infections?

Yes. Have you ever turned your vehicle's air conditioner or heater and smelled mold? Or jumped in your boat or motor home after its been closed up for a while and noticed a repugnant odor? Our cars, trucks, SUVs, RV's, motor homes, boats, and airplanes can all be a source for exposure to high levels of airborne mold spores.

If you live or work in a moldy building, mold spores that cling to your clothing often end up in your car's air conditioner or heater. Water-damaged vehicles and even vehicles that have been cleaned but the upholstery or carpets have not been dried properly can all be infested with mold.


Mold grows in dust commonly found in HVAC duct work in residential and commercial properties in Los Angeles and surrounding areas. Call 1-800-369-8532 for a quote on mold testing for your HVAC systems.

Can air ducts become contaminated with mold?

Yes. Dusty HVAC ductwork provides an ideal environment for mold and other allergens to grow in. Air duct systems may be constructed of bare sheet metal, sheet metal with fibrous glass insulation on the exterior, or sheet metal with an internal fibrous glass insulation. Bare sheet metal systems and sheet metal systems wrapped in fibrous glass insulation can be cleaned and disinfected. If ductwork made of sheet metal with internal fibrous glass liner or ductwork made entirely of fibrous glass becomes water damage or mold growth occurs, replacement may be necessary.

Call AMI today for a quote on testing your recycled indoor air

AMI is proud be a member in good standing with Better Business Bureau of the Southland in the greater Los Angeles area.
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Mold Inspection and Mold Testing by Certified Los Angeles Mold Inspectors

Mold inspections and mold testing are two distinctive services that work in conjunction with each other to confirm or rule out indoor mold growth. The following information will help you understand the difference between mold inspections and mold testing and what you can expect to learn from each one. AMI is and has been the number one mold inspection company in Los Angeles and all of Southern California with the only certifications in our industry that are accredited by the Council of Engineering and Scientific Specialty Board (CESB).

What Is A Mold Inspection?

AMI mold inspections include thermal imaging with infrared technology at no extra cost. If your Los Angeles mold inspection is not performed with infrared, your mold inspection may be inconclusive.AMI mold inspections
are non-invasive, non-destructive visual inspections for mold and conditions that cause mold.

Non-Invasive means we do not cut open walls, tear up floors, rip out cabinets, etc. AMI inspections are technology-based using state-of-the-art inspection equipment such as infrared cameras and moisture detection instruments to avoid unnecessary destructive inspection procedures. For more information on the role of infrared cameras click here or scroll down.

Mold and Conditions That Cause Mold means the inspection focuses on more than just visible mold growth. We inspection the interior interior and exterior of the structure for any conditions that are commonly associated with indoor mold growth.

Picture of mold grwoth inside a wall cavity found in a Los Angeles homes after a mold isnepction and testing by AMI.As a rule, identifying mold problems and their source is fairly straightforward and can be done with just a cursory visual inspection. But even with the latest and greatest technology available, a non-invasive inspection can have certain limitations. When a red flag or suspicious condition is detected, such as water damage, high moisture retention in a wall, etc., but no visible mold growth is seen. At that point the visual inspection has reached its limitation. That's where testing comes in.


What Is Mold Testing?

Mold testing involves the collection of samples for one or both of the following purposes:

  1. To assess the likelihood that mold growth has occurred in a suspect area where no mold is visible at the time of inspection.
  2. To assess the likelihood that indoor mold growth has negatively impacted the indoor air quality of a building.

Mold testing answers the questions that the visual inspection cannot answer, which are, Is mold growing in indoors where it cannot be seen; and Is it a health risk.

Mold Sample Types:
There are three primary methods of testing for mold indoors; surface samples, air samples, and dust samples.

1. Surface Sampling:
The purpose of surface sampling is to evaluate whether a suspected stain, discoloration, blemish, or other irregular appearance on a surface is mold.  Just as the name implies, surface samples are used to identify what type of mold - if any - may be growing on the surface of construction materials, personal contents, etc. Surface samples are usually taken with a sterile cotton swab or tape lift and are only relevant to the exact area where the sample is taken. As such, surface samples are not to be relied upon for conducting risk assessment as it relates to airborne mold spore levels.

When Should Surface Samples Be Taken in a Mold Inspection?
As a rule, surface samples are unnecessary. Seeing visible mold growth indoors is usually enough to confirm that there is a mold problem. Mold should never be growing on any construction materials indoors or on anything stored indoors. Occasionally however, it can be difficult to distinguish the difference between mold and dirt with a visual inspection alone. For that reason, it is important to define your objective before deciding on whether or not to sample a surface for mold.

The four most common questions people have for sampling surfaces are:

  1. Is a certain stain or discoloration mold or dirt?
  2. What are the specific types of mold present on a surface?
  3. Is the mold on a surface viable or non-viable (alive or dead)?
  4. Is the mold on a surface the same mold that was found in an air sample taken from the same location?

If your objective for sampling suspected mold on a surface is not one of these four reasons, surface sampling may be unnecessary. To discuss your specific situation and whether or not surface sampling will answer any questions you have, call an AMI Certified Inspector for a no-cost consultation.

2. Air Sampling:
The purpose of air sampling is to evaluate the probability that an elevated or unusual mold condition exists indoors when such a determination cannot be made by visual observation alone.

In a non-invasive inspection it is not always possible to visually determine if a "suspect condition", such as water damage or moisture is in fact a mold problem or not (see pictures of hidden mold growth - right). Testing airborne mold spore levels near a suspect condition provides analytical data that can be used to either confirm or rule out hidden mold growth. 

When Should Air Samples Be Taken for Mold Testing?
If you suspect you have a mold problem, don't wait until you can visually see it. Many people who call AMI say, "I don't see any mold". But the fact is, most mold problems go unnoticed long before any visible signs appear, and the costliest mold repair jobs are the ones that no one knew were there until after the damage is done.

Mold growth can spread exponentially inside walls, under under cabinets and floors, above ceilings, and deep into heating and air conditioning vents as long as the right conditions exist. By the time hidden mold is detected, it can cause thousands of dollars in property damage and pose significant health risks.

The time to test for mold is when you suspect you might have a mold problem. If you smell musty odors indoors, you have a reason to have a mold inspection. If you've had a roof leak, a plumbing leak, or a flood (past or present) a mold testing is certainly warranted. Prompt action can mean the difference between an inexpensive repair project or a several thousand dollar mold remediation job and health implications.

To the right of this text is an example of how hidden mold in a bathroom can cause damage long before it becomes visible. These pictures were taken on an actual AMI inspection.

For more information or to speak with Certified Mold Inspector about how these services apply to your specific situation, call: 1-800-369-8532


Detecting Mold Problems

Any of the following conditions around your property warrant a professional mold inspection.

Picture of condensating window causing mold growth in a Los Angeles apartment. Frequent Condensation on Window

Cause : Improper window seal, moisture retention inside wall cavities, temperature-humidity regulation.

Consequences: Moisture seeps past window frame and into wall cavity causing water damage and mold growth inside wall.

One corner shows minor water damage on the surface but mold was growing in the wall cavity. Surface Mold On Window Sill

Cause : Improper window seal, moisture retention inside wall cavities, temperature-humidity regulation.

Consequences: Moisture seeps past window frame and into wall cavity causing water damage and mold growth inside wall.

The other corner shows water damage, mold growth on both sides of the drywall and inner-wall cavity. Surface Mold Inside Window

Cause : Improper window seal, moisture retention inside wall cavities, temperature-humidity regulation.

Consequences: Moisture seeps past window frame and into wall cavity causing water damage and mold growth inside wall.

This picture is split into 2 parts. The upper part shows a clean wall but with high moisture reading inside the wall cavity. Mold remediation experts found significant mold growth inside the wall cavity behind the tiles. Bathtub/Shower Mold

Cause: Water leaks due to cracked or inadequately sealed grout, plumbing leas inside wall, etc.

Consequences: Mold comes back with a few days after cleaning, severe water damage, degradation of construction materials, and mold growth inside wall cavities.

Water stains and surface mold on exterior construction materials are common in Los Angeles but may be an indicator of mold growth in between roof tiles and sub-roof lumber. Mold, Dry Rot, Water Damage on Eaves

Cause: Damaged or improperly installed roofing paper or tiles.

Consequences: Severe water damage, degradation of construction materials, and water damage and mold growth spreading under shingles, onto sub-roof materials.

Without a proper mold inspection, water damage and mold growth can create significant mold problems indoors and costly repairs. Roof Leak

Cause: Damaged or improperly installed shingles.

Consequences: Water damage and mold growth spreading under shingles, eventual on attic and interior construction materials.

Poured concrete over stucco wall weep screed causes water to get trapped inside walls, eventually making its way to the inner-wall cavity and ultimatley into interior drywall andother construction materials. Over-Exposure to Water on Stucco

Cause: Sprinklers, poor drainage, excessive ground water, covered weep screed, etc.

Consequences: Water damage and mold growth on stucco and inner-wall materials and interior walls of the structure.


The Role of Thermal Imaging Infrared Cameras in Mold Inspections

Thermal Imaging Targets Moisture
Thermal imaging systems have been used by the military to detect and identify enemy personnel, equipment, and buildings for years. Helicopters, fighter planes and even some missiles use thermal imaging for targeting. Law enforcement agencies also use this technology for everything from tracking criminals at night to spotting illegal crossings of international borders.

Thermal imaging has now been in place for a number of years within the building industry and has been used to find problems with building materials, such as: hidden water leaks, leaks within the HVAC system, general plumbing leaks and faulty electrical and mechanical systems. Thermal imaging cameras are useful for energy loss audits because you can see exactly where cold air is entering the home or heat is being lost, along with energy dollars. Thermal imaging has also been used successfully to help locate loose electrical connections or overheated breaker boxes by identifying “hot spots”.

The Indoor Air Quality (IAQ) industry has made significant strides in the use of this outstanding technology as a way to provide accurate and reliable results during investigations. In fact, it has been determined that the proper use of this technology can increase accuracy and help cut investigation time significantly.

Mold inspection in Los Angeles - infrared camera finds moisture in a ceiling - moisture is the cause of indoor mold growth.Thanks to thermal imaging, AMI Inspectors have the ability to examine roofs, floors and walls for moisture intrusions, energy loss and electrical problems faster and more thoroughly than the competition.

While infrared does not specifically detect mold, it does provide Inspectors with the distinct advantage of quickly and accurately identifying conditions where mold typically grows.

Thermal imaging cameras have quickly become the “must have tool” for IAQ Professionals. Not only is this sophisticated technology is used in every AMI mold inspection, it is also used in every post-remediation verification survey to ensure that building materials have been thoroughly dried out before any reconstruction work begins. If construction materials are not completely dry, mold growth will reoccur. Infrared technology eliminates the guesswork and provides quick visual assessment of the thoroughness of dry out job.

The thermal imaging infrared camera is now the standard by which true professional IAQ investigators measured.


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