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Find Mold & toxic material testers in Port Jefferson

Avatar for Healthy Buildings & Homes LLC
Healthy Buildings & Homes LLC
5.0(
9
)

Serving Port Jefferson, NY and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"Jeff is very professional and attentive to your specific situation. He listens and makes sure provides informative advice. I was able to get an appointment right away. I really appreciate the personalized help with my basement situation which has been giving us a lot of issues past year."
Saitowitz Residence
Saitowitz Residence
Saitowitz Residence
Janosick Residence
Janosick Residence

+8

Response time5 hrs
Response rate100%
4 neighbors recently requested a quote
Avatar for Mold Test Company NY
Mold Test Company NY
3.9(
93
)

Serving Port Jefferson, NY and surrounding areas

Approved

In business since 2008

Credit card accepted

Offers commercial services

"Mr Henry Smith was on time, very professional at what he does he not only expained to me what was going on he made sure he answered all of my questions and concerns talking to him about my experience in my home he understood me he was able too show me areas around the outside of my home and pin point the possibility of how and,where the problems occurred I learned a lot mist of all always have my home tested before moving in this would savee and my love ones alot of health issues pain and suffering in the future I would highly recommend the mold testing company to any and everyone who needs assistance with mold it is so worth it thanks Mr Henry Smith and the molding company"
Mold Testing
Mold Testing
Mold Testing
Mold Testing
Mold Testing

+68

Response time9 hrs
Response rate100%
264 neighbors recently requested a quote
Avatar for Sound Environmental Solutions Inc.
Sound Environmental Solutions Inc.
4.7(
12
)

Serving Port Jefferson, NY and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"I work with this company on a weekly basis, and Jon and his team are by far the most professional in the industry. Their turnaround time on testing is unmatched — quick, efficient, and reliable. There’s no cutting corners, no wasted time, just straight results done the right way. The team is extremely knowledgeable and detail-oriented, ensuring every job is handled with precision. If you need testing done properly, look no further than John Makoso and his team at Sound Environmental Solutions. They truly are the best in the business."
1
2
Asbestos - Testing
Shower
Bathroom Main Area

+5

Response time1 day
Response rate100%
1 neighbors recently requested a quote
Avatar for Long Island Mold Testing, LLC
Long Island Mold Testing, LLC
5.0(
8
)

Serving Port Jefferson, NY and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"I had a mold assessment done on my house in Northport, New York. Chris found a leak in my bathroom and we pulled up the sheet rock to discover mold. Itâ s all handled now 100% recommend using Long Island Mold Testing for any of your needs."
Response time1 day
Response rate98%
Recommended by87%of homeowners
Avatar for True Quality Home Inspections
True Quality Home Inspections
4.7(
59
)

Serving Port Jefferson, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2011

Free estimates

Emergency services offered

"Our son had a mold issue in his co-op and we were not experienced in dealing with this issue. Scott was very knowledgeable and took time to answer all our questions. He did the air quality Test in the co-op for a reasonable price and gave us information that helped us ensure the issue will be handled properly."
Hvac
Swab sample
Mold inspection
Air sampling
Mold inspection

+5

Response time1 day
Response rate88%
10 neighbors recently requested a quote
Avatar for Empire Air Care LLC
Empire Air Care LLC
5.0(
3
)

Serving Port Jefferson, NY and surrounding areas

Approved

In business since 2020

Free estimates

Small jobs welcome

"When I called I was dealing with a serious mold problem in my basement. I gave them a call and they came fast and ready to fix the problem ! They didn’t hesitate to check other places that may have been contaminated! I can say they did a fast and professional job . Highly recommend!"
Mold Inspection
Mold Inspection
Mold Inspection
Mold Inspection
Mold Inspection

+4

Avatar for Phase 1 Restoration Inc.
Phase 1 Restoration Inc.
4.7(
21
)

Serving Port Jefferson, NY and surrounding areas

Approved

In business since 1987

Free estimates

Emergency services offered

"Men came earlier than scheduled,went right to work,and finished the job in about an hour. They were friendly and professional,answering my questions,and cleaning up afterwards.I highly recommend them.The price was almost 5 times less than the other company I got an estimate from. Highly satisfied.
"
Additional Photos
Response time2 days
1 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for C&G Restorations
C&G Restorations
4.9(
123
)

Serving Port Jefferson, NY and surrounding areas

In business since 2005

Free estimates

Emergency services offered

"Guy of C&G Restorations is the one bright spot in the issue of having mold in your home. He and his team are remarkably professional. His prices are very reasonable, which I learned after overpaying for a previous mold issue. He's works quickly and thoroughly and leaves the area absolutely spotless. In addition, Guy and his team do not break anything or throw anything out without your knowledge and permission, which happened with the first company I used. Guy explains everything, every step of the way. His friendly manner makes him very easy to deal with, and he replies to texts, phone calls, and/or email in a flash. I wish service companies for all home needs were this wonderful. I hope your home never has mold, but if you do, Guy/C&G Restorations is the absolute best company to work with."
Additional Photos
Additional Photos
Additional Photos
Recommended by98%of homeowners
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FAQs for mold & toxic material test projects in Port Jefferson, NY

Some companies offer a no‑cost phone or video consultation that screens for red flags. If the discussion points to a real issue, the pro will recommend a paid on‑site inspection. The complimentary call clarifies whether you need full testing, but it isn’t a substitute for samples, lab work, or a written report. Always confirm what the free service covers before you schedule.

A standard inspection, which includes basic air and surface samples, takes an average of two hours. If the pro needs to probe hidden spaces, such as wall cavities or ductwork, plan on up to six hours. Extra time allows the inspector to reach tight areas, collect additional samples, and document findings. Lab analysis is a separate process and often adds several business days to the overall timeframe before you receive the full report.

Mold thrives where moisture lingers and air flow is poor. Common hotspots include bathroom walls, kitchen backsplashes, window sills, HVAC vents, fireplaces, crawl spaces, and enclosed attics. Check these areas regularly—especially after leaks or high‑humidity weather—to catch growth early and avoid costly repairs.

Unchecked mold can knock 20% to 37% off a home’s market value because buyers worry about hidden damage and health risks. Even after remediation, visible staining or a history of major moisture issues can still lower offers and prolong the time on the market. Addressing mold quickly protects both your property’s structural integrity and its resale appeal.

The Port Jefferson, NY homeowners’ guide to mold & toxic material tests

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