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How Much Does A Mold Inspection Cost?

Typical Range: $296 - $1,001

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Mold Testing Costs

On average, homeowners pay about $643 for a professional mold inspection. Depending on your location and the size of your house, that range can go from $296 and $1,001. You can get a DIY testing kit for $40 or less, but it does not replace a comprehensive assessment.
the average cost to test or remove mold is $650 or $150 to $2,670.
With any constant source of moisture in your home, toxic spores can grow quickly. If you even suspect its presence, you need to get a professional to assess location and spread of the growth, the damage it has caused, and how you can remove it.

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National Average $643
Typical Range $296 - $1,001
Low End - High End $150 - $2,663

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Cost data is based on actual project costs as reported by 6,682 HomeAdvisor members in .

Professional Mold Inspector Cost

Professional mold inspectors, also known as certified Industrial Hygienists (IH), will charge an average of $300 to $500 to test an average-sized property and home for toxins. They're licensed to take a close look at your property and find both symptoms and sources of moisture damage.
Some businesses offer a free walk-through. These pros may require you to work with them on removal if they find any growth. Others charge a more comprehensive inspection that includes sample testing. Your range can go as high as $700 for a large property with many difficult-to-access spaces. That price does not include remediation.

Locating the Mold

Depending on its location, mold can be very easy or difficult to spot. If it's difficult to access, the inspection can take longer and can cost up to $700. Common growth spots include:
Common Mold Areas in Your Home
LocationAccessibility & Visibility
Bathroom or kitchen wallsHigh
Exposed foundation walls, especially near cracksHigh
Windows and window sillsMedium
Air conditioning and heating ventsLow
Fireplace and/or chimneysMedium
Wall cavities, especially between drywall and foundationLow
Enclosed attic spaces near the roofMedium
Crawl spaces under your home that are difficult to reachLow
An inspection that only checks the obvious spots takes as little as two hours. A comprehensive checkup that includes even the most inaccessible areas costs more and takes as much as six hours.

Mold Air Test Cost

Testing your home's air for toxic spores costs between $70 and $150. Most professionals include this step in their overall inspection. Airborne toxins are a serious health risk and can lead to respiratory and lung problems.

Mold Inspection Cost on a Home vs. Commercial Space

Inspecting a commercial space for moisture-based toxins typically costs between $500 and $1,000. This higher cost compared to a home assessment comes from the larger area that typically needs tested.

Timing of Evaluation & Amount

If you ignore the problem in your home, it will grow. Once you see exposed spores, you typically don't even need a test anymore. Get an inspection as soon as you think you might have a problem. You can usually tell you have mold by a musty smell like dirty socks. The quicker you get the test, the sooner you can stop the growth and reduce eventual remediation costs.
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Average Cost of Mold Assessment by Type

An inspection costs between $290 and $1,040 for residential or commercial spaces, regardless of the type of spores a pro might find. It may uncover several different types of mold. Each one needs to be removed in a specific way. The most common types of indoor spores include:
  • Cladosporium
  • Aspergillus
  • Penicillium
  • Ulocladium
  • Acremonium
  • Stachybotrys
  • Alternaria.
Of these seven, aspergillus, acremonium and stachybotrys are the most dangerous and need immediate removal. Remediation is also a good option for the other four, which are dangerous for people with allergic reactions. In all, there are more than 10,000 different types of spores, typically sorted by their colors.

Black Mold Testing

Black mold is the most toxic growth and can lead to asthma and other serious health problems. It has a greenish-black hue and should be removed immediately.
If you don't take care of this problem, serious health issues might follow. Typical symptoms include chronic coughing and sneezing, eye irritation, fatigue, and headaches. In more severe cases, exposure can lead to nausea, vomiting, lung bleeding, and even death.
Fortunately, this is not the most common type of fungus, growing more slowly and less easily than other types. It's found throughout the U.S., in areas that are high in cellulose and low in nitrogen: drywall, lumber, and cardboard.

White Mold Mildew Inspection

Experts consider white spores mildew, which is a related form of surface fungus. This type is more harmless than its black relative but can become dangerous when left alone and cause allergic reactions over time.

Pink Mold Checkups

You might find pink spores in your kitchen or bathroom. This is not actually mold, but bacteria growth that also thrives on moisture. Left alone, it can lead to respiratory infections.
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DIY vs. Hiring a Certified Mold Specialist

You'll find plenty of guides online that help you perform your own tests. But you might not know what to look for, or how to differentiate between different types of spores. You also might not be able to find the true source of the problem, making it difficult to accomplish a long-term fix.
If you suspect toxic spores in your home but aren't sure, or you know you have some but don't know how much or what kind, immediately call a pro. The right expert will provide a thorough inspection along with the best approach to removal.

DIY Mold Test Kit Costs

DIY kits to test mold in your home cost between $10 and $40. They are available at most large retailers and home improvement stores. Results can be misleading, depending on where and how you perform the test. The kit also limits you to specific spores you have already discovered.
Only a professional assessment by a certified pro can help you truly understand the extent of the problem.

Mold Inspection & Removal Services

Most inspectors also perform remediation services. You can find some that don't but working with an expert qualified in both allows for a smoother transition and better long-term solution. You won't run into communication issues on where mold was found and how the problem needs to be addressed.
If you are sure that you have some toxic spores in your home, hire a company that can perform a comprehensive inspection along with remediation services. That way, you can get your home the care it needs to keep you and your family safe.
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How much mold exposure is harmful or toxic?

Even a few days of continuous exposure to mold can be harmful. The closer you are, the worse it gets. Children and infants are more prone to health problems, as are those with existing respiratory problems or allergies.
Short-term exposure may lead to sneezing, stuffy noses, and eye irritation. The more exposed you are, the more significant these symptoms can become. Long-term exposure without a solution can lead to chronic respiratory illness or asthma.

What are the underlying reasons for mold growth?

Moisture is the biggest reason for spore growth. Since the spores thrive in damp environments, it is important to fix the core problem. That might include:
  • Leaking pipes
  • Cracked foundations
  • Unsealed or non-waterproof basement
  • A leaking roof
  • Unsealed window wells
  • Moisture entering your home
In many cases, the costliest part of remediation is not removing the mold but repairing these underlying issues.

Can I get a free mold inspection?

Some mitigation businesses offer a free checkup as part of their effort to win customers. Homeowners should tread carefully. Some, but not all services offering free evaluations will look for problems where none exist. It's their only way to get revenue. When offered a free checkup, always do your research to make sure the company you're considering is credible.

How much does mold remediation cost?

If your inspector finds any issues, comprehensive mold removal costs between $1,100 and $3,400. Once the issue is clear, the expert will determine the best method for remediation and prevention.
Depending on the extent of the damage and the location, your home could require anything from a deep cleaning to a multi-day overhaul to prevent spores from entering the home again.

Should I get a mold assessment or a full air quality inspection?

Air quality testing costs between $300 and $550. It provides a more comprehensive overview of all potential airborne toxins in your home. You can find airborne spores but might not be able to detect early mold growth.
If you suspect toxic spores in hidden spaces, a full assessment of your house makes sense. For a routine test due to potential respiratory problems, an air quality inspection is your best bet.
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