Top-rated mold testing and remediation specialists.

Get matched with top mold testing and remediation specialists in John Day, OR

Enter your ZIP and get matched with up to 5 pros

Need a pro for your mold testing and remediation project in John Day, OR?

Select your specific project to find the pro for you.

Verified Reviews for Mold Testing And Remediation pros in John Day, OR

*The Angi rating for Mold Testing And Remediation companies in John Day, OR is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Mold Testing And Remediation needs.

*The HomeAdvisor rating for Mold Testing And Remediation companies in John Day, OR is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Mold Testing And Remediation needs.

Last update on December 05, 2025

Find Mold testing and remediation specialists in John Day

Avatar for Biggerstaff Testing

Biggerstaff Testing

4.91(
17
)
•Approved Pro

Biggerstaff Testing

4.91(
17
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 years of experience

Biggerstaff Testing is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals has over 12 years of hands-on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

"He explained the procedure and how to read the results in detail."

CG R on May 2024

Biggerstaff Testing is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals has over 12 years of hands-on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

"He explained the procedure and how to read the results in detail."

CG R on May 2024

Avatar for Mold Test Company OR

Mold Test Company OR

4.27(
65
)
•Approved Pro

Mold Test Company OR

4.27(
65
)
•Approved Pro
Customers say: Quick response
84 local quotes requested
17 years of experience

At Mold Test Company OR, we take great pride our experience, expertise, quality and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"F a bulous"

Shelie H on July 2021

At Mold Test Company OR, we take great pride our experience, expertise, quality and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"F a bulous"

Shelie H on July 2021

Perfection Tech

No reviews yet

Perfection Tech

No reviews yet

The world of technology can be fast-paced and frustrating. That's why we try to put you at ease, by installing and configuring your equipment correctly the first time. We pride ourselves on providing the best experience for our customers. This in turn helps provide the best business relationships and partnerships. Perfection! Why expect anything less?

The world of technology can be fast-paced and frustrating. That's why we try to put you at ease, by installing and configuring your equipment correctly the first time. We pride ourselves on providing the best experience for our customers. This in turn helps provide the best business relationships and partnerships. Perfection! Why expect anything less?

Coastal Restoration

No reviews yet

Coastal Restoration

No reviews yet

From the Long Beach Peninsula through Astoria and south to Manzanita we offer a wide range of emergency services. Our company is a family business that is 100% locally owned and operated with over 100 years of North Coast experience. If you are looking for a professional staff to take care of you and your property during times of unfortunate circumstances, you can depend on Coastal Restoration to get your life back together in a timely, professional manner. Proudly serving up 50 miles!

From the Long Beach Peninsula through Astoria and south to Manzanita we offer a wide range of emergency services. Our company is a family business that is 100% locally owned and operated with over 100 years of North Coast experience. If you are looking for a professional staff to take care of you and your property during times of unfortunate circumstances, you can depend on Coastal Restoration to get your life back together in a timely, professional manner. Proudly serving up 50 miles!

Avatar for RP Builders Construction

RP Builders Construction

No reviews yet

RP Builders Construction

No reviews yet
21 years of experience

Contact Robert, with RP Builders Construction for all you residential and commercial Projects you have. "No Job To Small, We do it All!" Also check us out at ANGIES LIST. OFFICE: 541-270-6860 FAX: 541-563-6894 SOME OF THE SERVICES WE PROVIDE: INSURANCE CLAIM WORK, KITHEN AND BATH REMODELS, COMMERCIAL REMODELS. NEW CONSTRUCTION, DOORS AND WINDOWS, ROOFING & ROOF REPAIR. DRYWALL WORK NEW AND REPAIR. WATER DAMAGE REPAIR AND RESTORATION. MOLD AND MOSS REMOVAL, POWERWASHING. HARDWOOD, LAMINATE, TILE FLOORING. DECKS & PATIOS. CARPENTRY ROUGH & FINISH. FRAMING WOOD & STEAL. JUST A FEW OF THE SERVICES WE PROVIDE THANKS FOR CHECKING US OUT, LOOKING FOWARD TO TALKING TO YOU.

Contact Robert, with RP Builders Construction for all you residential and commercial Projects you have. "No Job To Small, We do it All!" Also check us out at ANGIES LIST. OFFICE: 541-270-6860 FAX: 541-563-6894 SOME OF THE SERVICES WE PROVIDE: INSURANCE CLAIM WORK, KITHEN AND BATH REMODELS, COMMERCIAL REMODELS. NEW CONSTRUCTION, DOORS AND WINDOWS, ROOFING & ROOF REPAIR. DRYWALL WORK NEW AND REPAIR. WATER DAMAGE REPAIR AND RESTORATION. MOLD AND MOSS REMOVAL, POWERWASHING. HARDWOOD, LAMINATE, TILE FLOORING. DECKS & PATIOS. CARPENTRY ROUGH & FINISH. FRAMING WOOD & STEAL. JUST A FEW OF THE SERVICES WE PROVIDE THANKS FOR CHECKING US OUT, LOOKING FOWARD TO TALKING TO YOU.

Avatar for JBC Group Solutions Inc

JBC Group Solutions Inc

4.00(
4
)

JBC Group Solutions Inc

4.00(
4
)
Customers say: Quality work
18 years of experience

1-888-JBC-ON-TIME (888-522-6684). 26 employees in Portland area. No subs used. Payment may be made via PayPal.

1-888-JBC-ON-TIME (888-522-6684). 26 employees in Portland area. No subs used. Payment may be made via PayPal.

Showing 1-10 of 18
Mold Testing and Remediation questions, answered by experts

Mold can greatly impact your home's appraisal and lower your selling price if your home's on the market. Home appraisers take mold into account when figuring out a property's overall value. Mold will lower your home's price because it poses a health risk to household members and can compromise the structural integrity of the house. Mold will require remediation, which in extreme cases can be costly, so that is factored into your home's appraisal as well.

Yes, professional testing identifies mold presence and type, guiding effective remediation plans that mitigate health risks. By ensuring thorough removal and preventing recurrence, professionals help maintain indoor air quality and reduce potential health hazards.

Mold tends to affect areas where water or moisture accumulates. This includes bathroom and kitchen walls, exposed foundations, windows and window sills, air conditioning and heating vents, fireplaces and chimneys, wall cavities, enclosed attic spaces, and crawl spaces that are hard to reach.

Poor maintenance can cause some health concerns, although these are more common in commercial misters than residential versions. For example, stagnant water can become a breeding ground for bacteria, some of which can be dangerous to human health, especially when inhaled. Regular flushing of the system before seasonal use should prevent issues like these.

Otherwise, avoid using mosquito misters with pesticides or plant misters with fertilizers near humans. These misters are not designed for cooling sprays around decks or patios, but for more utilitarian purposes.

No, a dehumidifier does not actually remove mold. It only reduces the moisture in the room, which mold needs in order to grow. If you already have mold, you’ll need to do a deeper cleaning or call a pro to remove the existing mold first.

The John Day, OR homeowners’ guide to mold testing and remediation services

From average costs to expert advice, get all the answers you need to get your job done.

See all articles

What do you need done? We’ll find top pros.
  • 🌱 "Mow a small front yard"
  • 🛠 "Fix a leaking pipe under the sink"
  • 🏠 "Repair shingles on an asphalt roof"