Mold Remediation Costs May Surprise You


Mold in homes is a topic that gets a lot of attention, but the tough thing is that there are many different kinds of mold, and not all are dangerous. Often, mold in small amounts probably won’t damage your home significantly, but you should tackle it early to prevent huge costs in the future. And, if you are worried the mold you see is a dangerous kind, it may be worth diving into the vast amount of information that can be found online.

Mold on the surface of a citrus.

Costs of mold remediation may considerably vary depending on where you are. Besides, the larger the affected area, the more you will have to pay.

To give you an idea of what to expect, we’ll break down mold remediation costs below.

How Much Does Mold Remediation Cost?

Average mold remediation costs vary for the US, the UK, and Canada.

In the United States, the average cost for mold remediation is $2,221 [1]. Typically, the costs range from $1,117 to $3,331, or $10-$25 per square foot.

The cheapest and smallest projects (e.g. spanning only 10 square feet) may cost as low as $50, while more expansive jobs can reach $6,000 and more.

In the UK, mold remediation appears to be much cheaper than in the US, and can cost as little as £115 [2] if only affecting a small area.

Mold removal in a large room would probably cost you from £50 and £250, while entire-home cleaning could rack up to £1,000 [3].

As for Canada, the costs start at $500 and may reach $30,000 for very large projects[4]. So mold remediation in Canada costs about as much as in the US.

Mold Remediation Costs Breakdown

How much you will end up paying for the project may vary based on the caused damage or the accessibility of the location. Below is a breakdown of mold remediation costs to help you get an idea of what to expect [1].

The figures will be given for the US – expect roughly the same in Canada.

Attic mold removal

Mold commonly forms in the attic because of leaks. If you have neglected your roof, you will have to splurge out more on repairs, not to mention that your roof will need some treatment too.

Expect to pay between $1,000 and $4,000 for mold removal in the attic. However, large leaks may make your wallet lighter by as much as $7,000. On top of that, you may have to pay for some amount of roof repair as well.

Basement mold removal

$500 to $3,000 is the typical range for mold removal in the basement based on our research. In addition, if you choose to seal your foundation to prevent future formation of mold, you may have to pay an additional $2,100-$6,200.

Bathroom mold removal

Usually, mold remediation costs in bathrooms end up between $500 and $1,000. If the mold has made it behind your sink, tub, or vanity, you may have to part with substantially more.

Crawl space mold removal

Crawl space mold is typically not that expensive to treat – mold removal costs may be as low as $500. Though with widespread damage, the costs may crawl (pun intended) up to $2,000.

In case you decide to encapsulate your crawl space to prevent future mold, you’ll have to add another $1,500 to $15,000.

Drywall or concrete wall mold removal

This is one of those areas where you may be forced to repair half your home – depending on how responsibly you have approached mold. Mold removal from behind drywall or concrete walls may cost between $1,000 and $20,000, depending on the size of the affected area and if you need to replace the wall and everything behind it.

Unless you’ve neglected your home for decades, you shouldn’t need to pay tens of thousands of dollars. But it’s still possible.

HVAC or AC mold removal

Purging HVAC or AC systems of mold will likely cost you from $3,000 to $10,000. Air conditioner cleaning is the most expensive ($6,000 to $10,000 according to our research), followed by furnaces & air handlers ($3,000 to $5,000), as well as radiant heaters ($1,500 to $5,000).

If your air ducts are affected, then that may be another $600 to $2,000.

Whole-home mold remediation

If mold has spread throughout your house, then the invoice will likely read between $10,000 and $30,000, including remediation and water damage repair. You may also have to pay for wall repair/replacement, fabrics, or whatnot.

Black mold removal

Black mold remediation will squeeze $1,000 to $4,500 out of your pocket. Black mold is more toxic than white mold and can be more difficult to remove. White, pink, or green mold, in contrast, cost between $500 to $3,000 to tackle.

Should You Remove Mold Yourself?

Hiring a pro is probably the best course of action. Mold can be toxic and form behind walls and in other inaccessible areas, so you may be unable to deal with it without equipment.

Luckily there is lots of great information on mold removal online, as well as links to mold removal specialists in your area!


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  1. “How Much Does Professional Mold Removal Cost?”, HomeAdvisor,
  2. “Cost to hire a Mould Remediation Specialist on Bidvine”, Bidvine,
  3. “The Cost to Remove Mould in your Home”, PriceYourJob,
  4. “Mold remediation in Canada may cost at least $500”, Symbeo Health,