Mold & Asbestos Testing Experts

At Celtic Mold Assessments, we provide licensed, third-party inspections and environmental testing services to help homeowners, home buyers, and contractors make informed decisions. Whether you're addressing mold concerns, verifying remediation, or need asbestos testing before renovations, our team delivers thorough, unbiased assessments that follow New York State regulations.

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Services We Provide

Mold Inspections / Assessments

One of our NYS Licensed Mold Assessors will conduct an inspection in the area(s) of concern prior to remediation. After the inspection....

Post Mold Remediation Clearance

One of our NYS Licensed Mold Assessors will conduct an inspection of the area(s) where remediation occurred (before repairs are made)....

Mold Testing

In most cases this service isn't necessary during the course of an inspection. When health related issues are of concern, mold testing could be recommended....

Asbestos Inspection / Sampling

NYS Code Rule 56 states that before any building materials known to contain asbestos can be removed they must first be tested for asbestos. This includes....

Certified Mold Free Home Service Plan

We are proud to announce that we are now offering lifetime certified mold free homes through the NEST Protection Plan. When....

NYS Licensed Mold Assessor

When to utilize the services of a NYS Licensed Mold Assessor:

  • If your property has been affected by water damage. This could be the result of pipe breaks, roof leaks, appliance malfunctions, flooding, and more.
  • If there is anything visible that you suspect may be mold.
  • If you or anyone else experiences symptoms of unknown origin, especially while inside the structure or certain areas of it. In some cases, symptoms improve when leaving those areas. Symptoms vary — click the link to learn more.
  • If there are mysterious and/or unpleasant smells or odors, which can indicate hidden mold growth.
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Certified mold remediation professional at Celtic Mold Remediation

Meet Us

At Celtic Mold Assessments, we bring over nearly a decade of hands-on experience in mold detection, removal, and prevention. With a strong background in environmental safety and property restoration, our mission is simple: protect families and businesses by creating clean, healthy, mold-free environments. We combine expert knowledge with honest, reliable service to ensure your home stays safe for years to come.

New York State licensed mold assessment and remediation regulations

Unbiased Mold Assessments — Required by New York State

New York State Labor Law Article 32 protects homeowners by prohibiting the same company from both inspecting mold and performing remediation. This law exists to eliminate conflicts of interest and prevent unnecessary or exaggerated cleanup work.

As a NYS Licensed Mold Assessor, Celtic Mold Assessments provides unbiased, third-party evaluations. We identify affected areas, determine the cause, and advise whether professional remediation is truly needed—so you get honest answers and real consumer protection.

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Serving the Hudson Valley and Capital District

Getting started is simple, and every step you take brings you closer to safer, healthier spaces. With Celtic, you’re not just scheduling an inspection; you’re choosing trusted experts who proudly serve the Hudson Valley and Capital District, delivering clarity, confidence, and reliable results for every home and project.

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Celtic Mold Remediation serving the Hudson Valley and Capital District

What Our Clients Are Saying

Celtic Mold Assessments LLC
5.0
Based on 23 reviews
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Michael Curran
15:46 09 Oct 25
John was excellent! Very calm demeanor, and didn't use any scare tactics. In fact, quite the opposite. Didn't force any unnecessary testing just to drive the bill up. Provided options and recommendations to solve our issue. Honest and very fair pricing. Nice guy. Would highly recommend!
Sarah Elliott Kopczynski
14:06 19 Jul 25
John was exceptionally knowledgeable and supportive from our very first call. We received our full assessment and results in under 48 hours—an impressive turnaround. I truly appreciated his sense of urgency and the genuine care he showed in helping us move forward quickly and confidently.
Johnny Little
08:14 14 Apr 25
Thoughtful and Thorough! John is a true professional and I enjoyed working with him for our asbestos surveying. Highly recommend!
Travis Wilber
23:34 17 Mar 25
We are so grateful to have been referred to Celtic Mold Assessments. John is thorough, competent and genuinely committed to serving the first responders in our community. He arrived for our first appointment on time, fully prepared, and with all the necessary equipment for a full inspection. It was clear he had extensive experience and knowledge, as he explained the entire inspection process and addressed any questions we had with ease as we walked through our home. The comprehensive report provided by Celtic Mold Assessments was clear and easy to follow, and he made sure to explain all findings, as well as the next steps, in a way that made us feel informed and empowered. It was obvious that John takes pride in his work and genuinely cares about helping his clients. If you want a mold inspector who is not only skilled and thorough but also trustworthy and patient, we highly recommend John from Celtic Mold Assessments.
Michael Gower
01:35 16 Jan 25
John Slater is a consummate professional. His vast experience and expertise as a both a mold remediator and a mold inspector are demonstrated in his words and his actions. John is courteous, timely, and willing to consider and thoughtfully respond to any and all questions and concerns regarding mold and mold exposure. He expresses appropriate concern for the health and well-being of those who have been exposed to mold and is helpful at directing you to additional resources. We highly recommend John and his company.
Beth Burkhardt
21:57 18 Aug 23
My apartment had multiple leaks and growing mold before I moved in. My landlord originally was not willing to go through a remediation process, so Celtic Mold Assessments was recommended from my father who works in construction and has experience with them. John has been a live saver during the whole process from start to finish. He answers any questions, gives recommendations, and has so much knowledge and expertise. He is diligent in ensuring the safety of his customers and works above and beyond. Not only has he been updating my family about everything going on in my apartment, he has gone out of his way to assist my landlord with the process to make sure it is safe. I would highly recommend contacting Celtic Mold Assessments for any mold issues, whether a home owner or tenant.