2022 Mold Removal Cost

Typical Cost of a Remodeling Project Average: $4,580 - $17,300
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The first thing that comes to a homeowner’s mind when they notice mold inside their house is that it must be removed as quickly as possible.

Mold is unpleasant, potentially dangerous, and often indicates other problems inside the house.

Mold Removal Cost

Mold remediation costs range between $1,045 and $3,254, with an average cost of $2,150. Homeowners can expect to pay anything between $9 and $23 per square foot.

Prices can vary greatly because they depend on several considerations. The crucial factors are the amount of growth and the level of corrosion.

If neglected for a long time, mold can cause structural damage that could require costly repairs, thus increasing the total costs. Larger, complex projects can cost $6,000 or more.

Average Mold Removal and Remediation Cost per Square Foot

As mentioned, most mold pros charge between $9 and $23 per square foot. You can expect to pay anything between $900 and $2,300 for a 100-square foot area.

The final price depends in part on where the mold is. Some areas are more prone to moisture and leaks, and getting rid of mold there can be very challenging.

Plus, you’ll need to pay more to remove mold from hard-to-access areas. Here are the average mold removal costs per square foot depending on the location.

Mold Removal vs. Mold Remediation

Before we get to mold removal and remediation costs, it’s essential to clarify the difference between the two terms. Although often used interchangeably, mold removal and mold remediation have different meanings.

Mold removal is the process of physically removing all mold spores, while mold remediation involves returning mold levels to natural, normal levels.

You may wonder why someone would want to return mold to normal levels instead of eliminating it completely. To better understand this, we need to talk more about mold.

Mold is present everywhere around us, in both closed and open spaces. Its spores are microscopic and float in the air, so they can enter a property through doors, windows, AC ducts, clothes, shoes, etc.

While you can get rid of mold stains inside your home, it’s essential to know it’s impossible to eliminate mold completely. Mold removal often means precisely that: simply getting rid of mold stains without addressing the source.

In contrast, mold remediation involves several stages to control mold growth and prevent unhealthy conditions.

These stages can include mold inspection, containment, cleanup, air filtration, disposal, sanitization, and preventive recommendations. Mold remediation is usually necessary when there’s a mold outbreak that covers more than 10 square feet.

Pro Tip: In most cases, restoration companies use the term “mold removal” instead of “mold remediation” because that’s what most homeowners best relate to.

So if you’re hiring a mold removal professional, it’s important to establish what stages are involved in their mold removal process.

Common Types of Mold Found In Homes

Mold comes in many forms and shapes, but there are three common types found in homes: Aspergillus, Cladosporium, and Stachybotrys.

Aspergillus is an allergenic mold often found on foods and in air-conditioning systems. Cladosporium mold is typically found in basements, bathrooms, around plumbing fixtures, on or behind wallpaper, curtains, etc.

This type of mold is highly allergenic and spreads quickly and easily. Stachybotrys mold is also known as black mold or toxic black mold.

It can grow wherever there’s moisture or water damage, leaks, condensation, or flooding. This mold is dangerous because it releases mycotoxins that can be linked to different health problems.

According to research conducted by the NIH, black mold can cause pain, mood swings, headaches, nosebleeds, and more.

The type of mold that needs attention is directly related to mold removal and remediation costs. Black mold is the most dangerous type, and it’s the most expensive to treat.

Other types are easier to remove, especially if they appear white, which often indicates earlier stages of development.

Did you know? There are over 100,000 different species of mold!

Attic Mold Removal Cost

Removing mold from your attic can cost you anywhere between $9.50 and $38 per square foot. Attics are often exposed to mold problems because of the higher risk of leaks.

Since many homeowners don’t use their attics often, it can take quite some time before they notice the mold.

If the mold is easy to access, homeowners will most likely pay between $9.50 and $20 per square foot, depending on how developed it is.

If the mold problem has existed without detection for a long time, it’s probably caused structural issues that will need to be taken care of to prevent future problems.

Homeowners may even need to pay for roof repair, depending on the damage. The total cost per square foot can go up to $70.

Basement Mold Removal Cost

Unfortunately, mold in basements is a common sight. Homeowners with mold in their basement can expect to pay between $4.50 and $28.50 per square foot for the removal.

The final cost can be even higher if mold has developed behind wood paneling, finished walls, and other hard-to-reach areas.

Keep in mind that mold will likely come back if you don’t tackle the source of the problem, like moisture in your basement.

If you want to prevent mold problems in the future, consider sealing your foundation. This can cost between $21 and $70 per square foot.

Cost of Crawl Space Mold Removal

Compared to removing mold from basements and attics, getting rid of mold in crawl spaces is more affordable.

The average cost per square foot ranges from $4.50 to $19. Mold in crawl spaces is usually contained in a small area, hence the lower price.

Pro Tip: If you want to prevent future mold growth, consider encapsulating your crawl spaces (although this could cost you an additional $5,000, on average).

Mold In Concrete Walls or Drywall

If you have mold in your drywall, you can expect to pay between $9 and $185 per square foot to remove it.

The final price depends on whether a simple treatment will be enough to fight mold or if you’ll need to replace the entire wall.

Removing mold from concrete walls can cost you up to $100 per square foot.

Bathroom Mold Removal Costs

Removing mold from a bathroom generally costs between $4 and $9 per square foot. If the mold has spread to your sink, bathtub, or walls, the costs can rise up to $75 per square foot.

Removing Mold From AC and HVAC Systems

Removing mold from furnaces, air conditioners, and air handlers is expensive because these units require special treatment to eliminate airborne particles. Getting rid of this mold can cost between $1,350 and $9,000.

Average Costs for Whole-House Mold Removal

Mold can easily contaminate an entire property. This often happens with properties that aren’t frequently used.

If mold has affected your whole property, the remediation costs will usually range from $9,500 to $28,500.

This amount would include repairing water damage that has led to mold growth.

Keep in mind that you may need to pay extra to purchase new carpets, curtains, and furniture that may have suffered too much damage.

Did you know? Mold can develop on any surface.

Black Mold Removal Costs

As mentioned, black mold is the most toxic type, and getting rid of it is challenging, hence the high price.

If you want to eliminate black mold from your property, you’ll generally need to pay between $9,500 and $38,000, depending on the degree of development.

Removing black mold involves several stages and requires expertise and special equipment. It’s best to leave it to professionals.

Removing Mold DIY vs. Hiring a Professional

Mold removal isn’t something that always needs to be done by professionals. Let’s see when homeowners can take the matter into their own hands.

DIY Mold Removal

Since hiring a professional for mold removal makes up a large part of the final cost, many homeowners wonder whether they can perform the job themselves.

The answer is yes, but only in certain cases. If mold covers less than 10 square feet, the U.S. Environmental Protection Agency (EPA) states homeowners can handle the issue on their own.

If you don’t want to hire a professional, you can expect to spend between $47 and $285 for mold removal. This cost includes renting a wet vacuum to eliminate moisture from wood and carpet.

Minor mold removal projects require only detergent or a preformulated mold solution, so the final price could be less than $47.

Keep in mind that you should purchase safety equipment to protect your lungs. The average prices range between $19 and $142.

DIY Mold Removal Tips

If you want to get rid of mold for good, follow these valuable tips:

Mold grows in wet places. If you want to eliminate it, check for plumbing issues and fix them as soon as possible.

Don’t forget to ensure the entire area is completely dry after fixing the problem.

Use a detergent or a premixed mold solution to get rid of mold spores on hard surfaces.

If your carpets, furniture, curtains, or drywall are severely damaged by mold, it’s best to replace them.

Working with mold can be dangerous for your health because you’re at risk of breathing in airborne toxins. Wear a mask and goggles to protect yourself. And don’t forget to use gloves.

The remediation process is completed only when there are no visible spores or odor. After you’re finished, ensure the area shows no signs of moisture accumulation.

A bleach-and-water solution is effective for removing mold from hard surfaces. If you want to use it, pay attention to this:

Don’t mix bleach with ammonia or other cleaning products because this combination could result in dangerous, toxic fumes.

Keep your windows and doors open to ensure air circulation.

Wear gloves and goggles.

Follow the manufacturer’s instructions to ensure the best results.

Did you know? While bleach is effective in killing live mold, it doesn’t get rid of mold spores.

Hence, this is only a temporary solution that doesn’t treat the source.

Professional Mold Removal

If you’re dealing with black mold or the contaminated area is bigger than 10 square feet, you should hire a professional for mold removal.

Reputable companies use highly efficient equipment like a HEPA vacuum, which has a specific filter and powerful suction for removing mold.

Professionals who use such vacuums need to have special mold-proof suits and must undergo specialized training. Companies that offer these services often have high rates, but they provide excellent results.

Hiring a professional may cost more, but price shouldn’t be the only factor to consider. With a professional mold removal company, you’ll get a thorough inspection that will detect mold efficiently.

Homeowners may not be aware of mold presence, while professionals know the most vulnerable locations and can spot mold before it causes damage.

Moreover, professionals will take care of the symptoms and the source of the problem to minimize the chances of mold problems in the future.

Finally, trained technicians can offer valuable advice on what precautions you can take to lower the risk of mold growth.

How Does Mold Affect People?

Mold growing inside a property is more than an eyesore; it can trigger numerous health problems. Mold has been known to produce substances that can cause allergies (allergens).

Sensitive and allergy-prone individuals may experience sneezing, a runny and itchy nose, rash, red eyes, etc.

People with asthma or a severe mold allergy can experience severe asthma attacks, and some can even get lung infections from inhaling mold.

Further studies are needed to establish what other effects mold has on our health. People with allergies, immune suppression, and chronic respiratory diseases are most at risk for mold-related health problems.

How Do I Know If I Have Mold In the House?

There are several signs that could indicate mold is growing inside your home.

Here are a few:

Rotten smell – A musty, damp smell coming from floors and walls is the most common sign of mold infestation. This odor is produced by mold volatile organic compounds (MVOCs). These chemicals are released during the mold life cycle.

Contaminated carpets – Mold loves carpeted areas. If you’ve noticed spots or stains on your carpets and rugs, you may have a mold problem.

Water heater leaks – Water heater closets are prone to moisture, so it’s no surprise mold tends to develop in there.

Since water heaters are usually situated in hard-to-reach areas, moisture and leaks often go unnoticed for a long time. Inspect the entire water heater closet to check for mold.

Respiratory issues – If you and other household members are often sneezing, coughing, and feeling exhausted regardless of the season, it’s time to check for mold inside the house. As mentioned, mold releases mycotoxin, which can trigger respiratory problems.

Warped walls – If you notice warped or spotted walls and bubbly paint, you could be looking at mold issues.

The most common reason paint begins to bubble and walls appear distorted is moisture. If moisture isn’t taken care of, mold will develop.

If you suspect a mold-related issue in your home, it’s best to hire a professional who can perform an inspection.

During an inspection, a certified technician will check the most vulnerable areas and examine the air quality.

Why Does Mold Grow In My House?

There are many types of mold, and they differ in many aspects. However, all types have one thing in common: they can’t grow without water.

Mold will grow in houses with high moisture levels. If you’ve had roof leaks, plumbing issues, flooding, or any other water-related issue, you need to pay close attention to the affected areas.

What Can I Do to Prevent Mold Growth Inside My Home?

Here’s what you can do to keep mold out of your home:

Pay Attention to Humidity Levels

High humidity can lead to mold development. Of course, there’s nothing you can do to change the weather outside.

However, you can take precautions to control the humidity level inside your home. Use a dehumidifier or an air conditioner to keep humidity between 30% and 50%.

Keep in mind that humidity levels change throughout the day. You may need to adjust the dehumidifier or air conditioner to ensure the best results.

Using these devices is crucial for those who live in hot and humid areas, especially during summer.

Don’t Forget About Ventilation

Proper ventilation is key for getting rid of humidity inside your home, thus preventing mold development.

Use exhaust fans to ventilate your kitchen and bathroom. Moreover, ensure that the dryer vents outside your home.

Whenever it’s not too humid outside, open the windows for at least a few minutes to allow air circulation.

Take Care of Leaks

Fix all leaks and plumbing issues as soon as they appear. That way, you’ll prevent moisture buildup and mold growth.

Did you know? It takes only 24 to 48 hours for mold to develop after a water damage event.

Don’t Use Carpets

Carpets in bathrooms, basements, and other areas may be convenient, but they retain moisture. If you want to minimize the risk of mold growth, consider not using carpets in those areas.

Inspect Your House

Regular inspection allows you to identify leaks and plumbing issues before they become bigger problems, and fix them to prevent mold development.

Is Mold Removal Expensive?

Mold removal doesn’t have to be expensive. If you decide to do it yourself, you can remove mold for less than $50. However, this isn’t always possible.

If mold covers a large area, you’ll need more material. In some cases, you’ll need to hire a professional to get rid of mold, which costs much more.

Can You Paint Over Mold?

Yes, you can paint over mold. However, if you don’t treat the source of the problem, mold will reappear after some time.

Get Rid of Mold

Besides being unattractive, mold can cause respiratory issues and damage your property. Hence, it’s essential to eliminate it as soon as possible and find the source of the problem.

It’s up to you whether you’ll hire a professional or not. Hiring professionals may be more expensive, but it typically means fewer problems in the future, so many people agree the investment is worth the money.


About Ilan

Ilan G. has been working in the remodeling and construction industry for over 15 years. His focus is on construction planning and design as well as project cost estimating. Ilan also has a personal interest in interior design, as well as in unique DIY remodeling projects. Read more about Ilan


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