The cost of a mold inspection might seem high, but it’s one of the best investments you can make for your health and home. Read on to learn cost-saving tips.
How Much Does Mold Remediation Cost in Portland, Oregon? [2025 Data]
Normal Range: $1,013 - $2,174
Mold remediation costs in Portland, Oregon, are $1,593 on average, but it can cost between $1,013 and $2,174, depending on location, type, and size of infestation.
How we get this data
Vladimir Nadtochiy / 500px / 500Px Plus / Getty Images
Vladimir Nadtochiy / 500px / 500Px Plus / Getty Images
Cost Insights
Attics and leaking windows are the most common places where mold grows in Portland due to the rainy weather.
Contractors must be licensed by the Oregon Construction Contractors Board.
The cost of mold remediation depends on the extent of the damage and the accessibility of the area.
Repairs and upgrades, like fixing a roof or sealing your foundation, will add to costs.
Oregon has a rainy climate that makes mold a common problem, especially in older homes that are susceptible to water intrusion. Mold remediation in Portland costs $1,593 on average, with most homeowners spending between $1,013 and $2,174.
In some cases, where mold damage is extensive and your home requires structural repairs, it can cost upward of $30,000. You’ll need to undergo mold testing to understand the extent of the problem and how much it will cost to fix.
Mold Remediation Cost Factors
The cost of removing mold from a home in Portland, Oregon, depends on several factors, including the type of mold, location, size, tests, and damage.
Mold Location
It costs more to remove mold from certain areas of your home than others. For instance, mold growth in hard-to-reach areas, like in your HVAC system or drywall, can require more time and materials to remove than mold in very accessible areas, driving up costs.
Mold grows in some common areas in Portland homes. Some areas are more susceptible than others, including the attic (particularly underneath a leaky roof), improperly ventilated bathrooms, damp crawl spaces, basements, and leaking windows, pipes, and gutters.
| Location | Average Remediation Cost |
|---|---|
| Attic | $1,000–$4,000 |
| Basement | $500–$7,000 |
| Crawl space | $500–$7,000 |
| Wall | $1,000–$20,000 |
| HVAC systems | $3,000–$10,000 |
| Bathroom | $500–$2,000 |
| Whole house | $7,000–$30,000 |
Mold Infestation Size
Most mold removal professionals charge $10 to $25 per square foot. So, if you're removing mold from a 100-square-foot area, you can expect to pay around $1,000 to $2,500. But factors like where the growth is and the mold type can affect how much it costs to remove it.
Mold Inspections and Tests
Mold inspection costs between $300 and $450. Mold testing is key to determining whether you have the presence of mold in your home, plus the extent of the infestation. You’ll need to hire a mold remediation pro in Portland, Oregon, to test surface samples in your home before moving forward.
Mold Type
Regardless of how it affects remediation costs, you need to know which type of mold you have in your home for your safety. That said, if a mold test reveals the presence of black mold, your mold remediation pro will likely charge more to remove it based on the additional cost of protective equipment.
| Type of Mold | Description |
|---|---|
| Alternaria | A common mold found outside in spring and summer, it primarily attacks plants. |
| Aspergillus | White fuzz that turns black over time, but it can also be brown, yellow, and green. It can cause respiratory illness and requires immediate remediation. |
| Aureobasidium | Grows on painted surfaces and behind wallpaper. It’s often pink and causes allergies. |
| Chaetomium | Extremely toxic and can cause brain infections and various cancers. A white fuzz that turns to blue or green. Requires immediate professional removal. |
| Cladosporium | Commonly found in basements and HVAC systems. It can cause mild allergy symptoms. |
| Fusarium | One of the most toxic molds; requires professional removal once discovered. Often caused by water leaks, it is commonly found in walls and floors. |
| Penicillium | Blue-green and grows in areas of elevated moisture where water damage has occurred. It can be very dangerous. |
| Serpula lacrymans | Causes severe damage to wood and spreads fast. Unfortunately, this mold is usually found after it has spread widely. |
| Stachybotrys chartarum (black mold) | Extremely dangerous, not to mention fast-spreading. Requires immediate removal by a professional. |
| Trichoderma | Grows rapidly in wood, plants, and soil. Commonly found in HVAC systems and not as widely discovered as others in this list. |
| Ulocladium | A dark-colored mold found near windows and in kitchens and basements. Looks like black mold, but it isn’t as toxic to humans. Nevertheless, it still requires removal. |
Damage Caused by Mold
If left untreated, mold can damage your drywall, carpeting, and flooring. Replacing or repairing your walls or floors will add costs to the removal.
Here are some cost estimates for different types of mold damage repairs in Portland, OR:
| Repair Type | Average Cost |
|---|---|
| Drywall | $1,000–$2,900 |
| Carpet | $775–$3,900 |
| Flooring | $200–$3,000 |
Mold Remediation Pro Costs
Contractors need a license from the Oregon Construction Contractors Board. Most charge an hourly rate of $70 to $130 per hour for labor, but you may find this reflected on your bill as a per-square-foot charge—in which case, pros charge about $6.30 to $17.50 per square foot.
Additional Pros to Consider Hiring
In addition to working with a mold remediation contractor, you may want to make repairs or upgrades that prevent a mold issue from returning. This requires hiring specialized contractors for projects like:
Fixing a leaky roof
Fixing leaking pipes
Adding a sump pump to a basement that regularly floods
Waterproofing your basement
Sealing your foundation
Encapsulating your crawl space
Contractors and their average costs include:
Roofing contractor: $30–$80 per hour
Plumber: $75–$90 per hour
Basement waterproofer: $100–$250 per hour
Foundation repair specialist: $75–$250 per hour
Crawl space specialist: $50–$150 per hour
Does Mold Remediation Increase Home Value?
Mold remediation won’t increase the value of your home, but a mold infestation can decrease home value by an estimated 20% to 37%. That’s a loss of $104,800 to $193,880 for the median-valued $524,000 home in Portland.
If you deal with regular mold issues, solving the root cause of them will be attractive to future homebuyers. For example, if you have a leaky roof, many buyers will ask you to fix it as part of the sale. Your contractor can help you decide which upgrades are worth it and which are the most valuable for your goals.
How Angi Gets Its Cost Data
Home is the most important place on earth, which is why Angi has helped more than 150 million homeowners transform their houses into homes they adore. To help homeowners with their next project, Angi provides readers with the most accurate cost data and upholds strict editorial standards. We survey real Angi customers about their project costs to develop the pricing data you see, so you can make the best decisions for you and your home. We pair this data with research from reputable sources, including the U.S. Bureau of Labor Statistics, academic journals, market studies, and interviews with industry experts—all to ensure our prices reflect real-world projects.
Want to help us improve our cost data? Send us a recent project quote to [email protected]. Quotes and personal information will not be shared publicly.
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