Mold Remediation Cost Per Square Foot: A Complete Pricing Guide

If you've found mold in your home, your first question is probably: how much is this going to cost me? The short answer is that mold remediation cost can range from a few hundred dollars to tens of thousands, depending on where the mold is, how much there is, and what type it is.

This guide breaks it all down for you. By the end, you'll know exactly what drives mold removal cost, what to expect per square foot, and how to get a fair mold remediation quote.

“Understanding mold remediation costs upfront helps you act quickly, protect your property, and avoid expensive structural damage.”John Davis

What We'll Cover

• Average mold remediation cost per square foot
• Pricing breakdown by location (basement, attic, crawl space, bathroom, HVAC)
• Factors that change your total mold removal cost
• A handy pricing table you can use to estimate your own cost
• Tips for getting a fair mold removal estimate

Average Mold Remediation Cost Per Square Foot

Most homeowners pay between $10 and $25 per square foot for professional mold removal. However, the national average sits around $15 to $20 per square foot for a standard job. Let's look at the bigger picture:

• Minor mold remediation (10–50 sq ft): $500–$1,500
• Moderate mold problem (50–200 sq ft): $1,500–$5,000
• Large or severe mold issue (200+ sq ft): $5,000–$30,000+
• Whole house mold remediation cost: $10,000–$30,000 or more

These are ballpark numbers. Your final mold removal price will depend on several factors we'll get into below.

Mold Remediation Pricing Breakdown Table

Here's a quick look at typical costs by area and severity. Use this as your starting point when requesting a mold remediation estimate:

Location / Type	Avg. Size (sq ft)	Cost Range	Cost Per Sq Ft
Bathroom mold removal	10–50	$500 – $1,500	$10 – $25
Basement mold remediation	50–300	$1,000 – $10,000	$10 – $25
Crawl space mold remediation	50–200	$1,500 – $15,000	$15 – $30
Attic mold removal	50–500	$1,000 – $15,000	$10 – $20
HVAC / Air duct mold removal	Whole system	$3,000 – $10,000	Flat rate
Black mold removal	Varies	$2,000 – $20,000	$15 – $30
Ceiling mold removal	10–100	$500 – $3,000	$10 – $25
Drywall mold removal	10–100	$1,000 – $5,000	$10 – $25
Roof mold removal	100–500	$1,000 – $10,000	$5 – $15
Dry fog mold removal	Whole house	$3,000 – $8,000	Flat rate
Minor mold remediation	Under 10	$100 – $500	$10 – $15
Whole house treatment	Full home	$10,000 – $30,000+	$15 – $25

Key Factors That Affect Your Mold Removal Cost

No two mold jobs are the same. Here are the biggest things that will push your mold remediation price up or down.

1. Size of the Affected Area

This is the biggest driver. The more square footage, the higher the cost. Most mold removal companies charge per square foot, so a 10 sq ft bathroom spot is very different from a 500 sq ft attic infestation.

2. Type of Mold

Not all mold is created equal. Black mold removal cost tends to be higher than other types because it requires more protective gear, stricter containment, and specialized treatment. Penicillium/Aspergillus mold removal cost is also elevated since these strains spread easily through the air. Toxic mold removal costs more across the board because of the additional safety protocols involved.

3. Location in the Home

Where mold grows affects how hard it is to access and treat:

• Crawl space mold remediation cost is high because crawl spaces are cramped and hard to work in.
• Attic mold removal cost can vary a lot based on attic size and ventilation issues.
• Basement mold remediation cost is often mid-range - basements are accessible but may have moisture problems that need fixing.
• HVAC mold remediation cost and air duct mold removal cost tend to be higher due to the system complexity.
• Bathroom mold removal is usually one of the cheaper jobs since bathrooms are small and accessible.

4. Extent of Damage

Surface mold on a tile wall? Much cheaper to treat than mold that's worked its way into drywall, insulation, or structural wood. The mold drywall repair cost alone can add thousands to your total if replacement is needed. Cost to remove mold from drywall typically runs $1,000–$5,000 depending on how much drywall has to be torn out.

5. Remediation Method

Different situations call for different methods:

• Dry fog mold removal cost is typically a flat fee for the whole house, ranging from $3,000–$8,000. It's non-invasive and fast.
• Dry ice mold removal cost tends to run higher - it's very effective for wood and concrete surfaces.
• Traditional containment and scrubbing is the most common method and is usually the baseline for your mold removal quote.

6. Testing and Inspection Fees

Before remediation begins, you may need a mold inspection. The cost of mold inspection generally runs $200–$600 for a standard check. Black mold inspection cost can be slightly higher if air sampling is involved. The average cost of mold inspection is around $300–$400. Keep in mind: some companies bundle the inspection with the quote, while others charge separately. Always ask upfront.

7. Post-Remediation Repairs

Once mold is removed, you may need repairs. Mold repair cost can include:

• Drywall replacement
• Painting and priming treated areas
• Fixing the moisture source (roof leaks, plumbing, etc.)
• Insulation replacement

Roof leak mold remediation cost often includes both the mold treatment and structural repairs, making it one of the pricier scenarios.

Mold Removal Costs by Location

Basement Mold Remediation Cost

Basement mold is one of the most common calls for mold removal companies. The basement mold removal cost ranges from $1,000 to $10,000. Basement remediation cost depends on how wet the space is and whether waterproofing is needed after the fact.

Crawl Space Mold Treatment Cost

Crawl spaces are dark, damp, and full of hiding spots for mold. Crawl space mold remediation cost runs $1,500–$15,000. The high end is common when encapsulation is needed. Crawlspace mold remediation cost also increases when structural wood is involved. Cost for mold remediation in crawl space is higher than most locations per square foot,  expect $15–$30/sq ft.

Attic Mold Removal Cost

Attic mold is often caused by poor ventilation or a leaking roof. Attic mold removal cost ranges from $1,000 to $15,000. Removing mold from attic cost can be high when the mold has spread across the sheathing. Black mold in attic removal cost is on the upper end of this range. Attic mold remediation cost also may include fixing ventilation issues.

Bathroom Mold Removal Cost

Good news: mold removal cost bathroom jobs are usually on the cheaper end. Grout and caulk mold can often be treated for $500–$1,500. However, if the mold is behind the tile or in the walls, that black mold removal cost bathroom job can jump to $3,000 or more.

HVAC and Air Duct Mold Removal Cost

Mold in your HVAC system spreads spores throughout your whole home every time the system runs. HVAC mold removal cost ranges from $3,000–$10,000. Air duct mold removal cost and AC mold removal cost are often quoted as a flat rate since the square footage model doesn't apply to ductwork. Cost to remove mold from air ducts can also include duct sealing or replacement.

Drywall Mold Removal

Mold loves drywall. Once mold penetrates below the surface, that drywall usually needs to go. Cost to remove mold from drywall typically includes demo, disposal, and replacement. Mold drywall repair cost can run $1,000–$5,000 depending on the scope. Cost to remove drywall with mold will also factor in labor costs for reinstalling new drywall.

How to Get a Fair Mold Remediation Quote?

• Get at least 3 mold removal quotes - prices vary widely between companies.
• Ask for a detailed mold remediation estimate that breaks down labor, materials, and any post-treatment repairs.
• Check if the mold estimate includes a follow-up inspection or air quality test.
• Ask specifically about mold removal cost per square foot so you can compare apples to apples.
• Look up mold removal near me prices on review sites to see what others in your area paid.
• Verify that the company is licensed and uses certified mold specialists.

Companies like ServPro are well known in this space. ServPro mold removal cost tends to be on the higher end due to their brand and wide availability, but you're paying for a proven process. If cost is a concern, local mold removal companies may offer competitive mold removal cost near me pricing.

Should You Get a Mold Inspection First?

Yes, in most cases, it's worth it. A mold inspection helps you understand the scope of the problem before you commit to a full remediation. The average cost of mold inspection is $200–$600. However, some mold remediation companies offer a free visual inspection when you request a mold estimate. Price of mold inspection can also vary if air sampling or lab testing is included.

Black mold inspection cost is slightly higher when specialized sampling is needed. If you suspect black mold, don't skip this step. It's better to know upfront what you're dealing with.

DIY Mold Removal vs. Professional Mold Removal Cost

Small patches of mold (under 10 sq ft) on non-porous surfaces can sometimes be handled DIY. However, for anything larger or on porous materials, professional mold removal cost is almost always worth it. Here's why:

• Pros use containment to prevent mold spores from spreading to other rooms.
• They have the right PPE to stay safe during removal.
• They identify the moisture source and fix the root cause.
• Many offer a guarantee or warranty on their work.

The mold clean up cost you pay a professional includes all of this. Skipping it and doing it yourself can actually make things worse if spores spread during the process.

The Bottom Line on Mold Remediation Cost

• Average mold remediation cost per square foot: $10–$25
• Small jobs run $500–$1,500; large jobs can hit $30,000+
• Location matters: crawl spaces and attics tend to cost more
• Black mold removal cost is typically higher than other mold types
• Always get multiple mold removal quotes before deciding
• A mold inspection is a smart first step if you're unsure of the scope

Now that you know what to expect, you're ready to reach out for a mold remediation estimate with confidence. Don't let a mold problem grow bigger than it already is - the sooner you act, the lower your mold removal cost will be.