Real, unedited Google reviews — from homeowners here in York County, and from the years I spent running the original Mastertech office in South Jersey.
I have been doing this since 2010 — but not all of it here. I built and ran the original Mastertech office in South Jersey, where I lived my whole life, and most of the reviews on this page came from that work.
I moved to York about seven years ago. Then I stepped away from the business entirely for health reasons, which are now resolved. I closed the South Jersey office and restarted Mastertech here in York in December 2024. So the York review count is short because the York business is new — not because the experience behind it is.
One difference worth knowing: the South Jersey office was full-service, with crews that did remediation as well as testing. That is why you will see reviews below mentioning containment, cleanup and removal. Here in York I only inspect and test. I do not perform remediation, so there is nothing for me to sell you after the report.
Certified since 2010 — CMI / CMRC
Founded the original Mastertech office
Inspecting in York County since 2024
Independent — no remediation upsell
Every Review
What people have written, in full
Shown complete and unedited. York reviews are first, followed by reviews from the original South Jersey office — each one labelled so you know which is which.
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Cass C.
2 months ago
I could not recommend this business enough for mold inspections! If you're looking for quick turnaround, great communication and honest upfront service - this is your place. Tom was respectful, professional, and explained everything in great detail. It was a pleasure to work with you. Would 100% use them again if needed in the future.
Mold samplingYork, PA
Response from Tom
Thanks Cassidy! It was a pleasure helping you guys out. Hopefully you won't need my services again - but I'll be here if you do.
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Linda K.
2 months ago
Truly the best! I can't say enough good things about Tom. After getting the testing I needed done, he was there to help answer any questions I had before, during, and after the remediation process which was completed by another company. I truly feel like I had someone I could count on by my side during this very stressful situation. At any point if I had a question, I could call him or send him pictures. I will only use him when I am dealing with anything that falls within his expertise.
Indoor allergen sampling, mold samplingYork, PA
Response from Tom
Thanks so much Linda! I'm glad I was able to help. I'm here if you need anything.
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Jacob F.
3 months ago
We had a great experience with Tom at Mastertech throughout this whole process. The entire process was extremely professional, patient, and thorough from the beginning. They took extra time to answer all of our questions, explained everything in a way that actually made sense, and were willing to help even through additional calls and follow-ups when we had concerns. This situation has been stressful for our family, especially with a young child involved, and they never made us feel rushed or brushed off. Highly recommend Mastertech to anyone needing mold inspection/testing or just wanting a company that genuinely takes the time to help people understand what's going on. The industry is a very confusing one from the homeowner point of view, and I was happy to get unbiased answers through air testing and visible inspections.
Mold samplingYork, PA
Response from Tom
Thanks Jacob. I appreciate the review and I'm glad I was able to help.
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Colby S.
1 month ago
Tom was great to work with, I'd highly recommend him and his team for any mold/allergen issues.
Mold samplingYork, PA
Response from Tom
Thanks Colby! It was great meeting you and I'm glad I was able to help.
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Oanh T.
9 months ago
If you are looking for a professional, honest person, I highly recommend Tom Duff! He was honest and upfront with us and we appreciated his input.
Mold inspectionYork, PA
Response from Tom
Thank you Oanh. I appreciate the kind words!
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Robert W.
Very nice and polite customer service. Mold remediation removal was done by very knowledgeable and experienced technicians. They arrived before the scheduled appointment time. Before they began to work they explained each stage of the removal procedure. Talk about good team work - protected my personal belongings by sealing off the work area like a cocoon keeping all contaminants contained. When done there was no mold visible and everything was very clean. Yes, I would recommend to anyone who has a mold problem.
Mold RemediationSouth Jersey office
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Mark R.
They did a very professional job removing the mold from my master bathroom crawl space and from behind the walls. They cleaned up thoroughly when they were finished. Tony and Diane were very helpful throughout the entire process.
Bathroom Mold RemediationSouth Jersey office
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Louis P.
Very professional and expert in their approach. An exceptional team of individuals did the work.
Mold RemovalSouth Jersey office
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Erik H.
What a great job from start to finish. This is a top notch team and will DEFINITELY use them again. I know that's odd to say because you hope accidents don't happen, but they do and you want the right team from start to finish. Thank You.
Bathroom Mold RemediationSouth Jersey office
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Ronnie D.
If anyone is ever in need of a mold remediation or clean up company we just had a great experience with MasterTech! They were in the attic for three days! The team was so sweet and super polite, we just felt very comfortable with them. They did a great job and were reasonably priced. I would highly recommend them!
Attic Mold RemediationSouth Jersey office
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Tara C.
Master Tech did an excellent job removing mold from our attic. They were professional, detail oriented, and courteous. We highly recommend them!
Attic Mold RemovalSouth Jersey office
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Adam F.
Very professional and really helped me out of a tough situation. I'd definitely recommend your company.
Attic Mold RemovalSouth Jersey office
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Wayne C.
We are very happy with the service provided by MasterTech. Anthony was very knowledgeable and instantly eased our fears. He took the time to explain why we had the problem, exactly what they would do to clean it, and what we needed to do to prevent future problems. On the day of the appointment, they showed up on time, walked us through the process again, and even left the area cleaner than when they started. Everyone from the office staff to the technicians are responsive, prompt, helpful and pleasant. We would not call anyone else.
Mold RemediationSouth Jersey office
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Diana D.
Best professional workers - they left my basement cleaner than when they started. I will recommend them in a heartbeat. Thank you again to Diane for keeping us informed along the way.
Basement Mold RemediationSouth Jersey office
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Jordan H.
They did a phenomenal job, and cleaned up very well after themselves. My house was left spotless. The workers were very nice, too. They took time after the job was completed to show me everything they did and explain how to keep the room moisture free.
Basement Mold CleanupSouth Jersey office
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Sheryl B.
Incredibly professional, kind, and communicative. Tony was always available for questions - going above and beyond in explaining the steps they were taking and why they were doing certain things in the mold remediation process. He gave pointers on things to look out for and talk to other professionals about as well as we continued our renovations. Would highly recommend to anyone needing their services!
Mold RemediationSouth Jersey office
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Ed S.
It was an excellent experience working with MasterTech Environmental and their whole team for an inspection and remediation on a property I am helping manage. Through the entire job (multiple appointments), they were 100% professional (timely written estimates, updates, follow-ups). The inspectors and team were always on-time, courteous, and respectful of your home. It made this process much less stressful. Also, they are very knowledgable in the field and actually helpful, their inspectors were happy to answers all of my questions. They explained what was being done and the process behind it, educating me around this topic so I knew what was going on. 100% recommend using the MasterTech team.
Mold Inspection & RemediationSouth Jersey office
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Christine S.
MasterTech helped my sister and I through a very difficult time. The services they provide are not often talked about and carry a tremendous amount of shame and regret for families. However their employees are kind, compassionate, helpful and most important honest. They emptied my childhood home, directed us to items we may want to keep and suggested how things could possibly be restored. They took what seemed like an impossible task and completed it in a few weeks. I highly recommend this company.
Estate & Hoarding CleanupSouth Jersey office
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Ana S.
It was a pleasure to work with Tom and his crew at MasterTech. They did a phenomenal job doing clean up of our crawl space and attic. They were very professional, honest and courteous and they knew the mold remediation business inside and out.
Crawl Space & Attic Mold RemediationSouth Jersey office
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Lor W.
Five enthusiastic stars! Tom Duff was extremely knowledgeable, friendly, and professional. Tony and team were meticulous with closing off the affected areas for safety and ensuring no mess was left behind. There wasn't an ounce of dust anywhere. Diane in the office is a sweetheart and her communication was second to none. Pricing was upfront and fair and they provide a 5 year guarantee on their work. I cannot recommend this wonderful business enough.
Office Mold RemovalSouth Jersey office
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Mary Ellen M.
We interviewed many contractors for the remediation of the mold in our basement. If your concern is to have the mold in your house thoroughly cleaned and guaranteed, look no further than Mastertech Environmental. What a fabulous company to work with! Tom has become the standard by which we judge all other contractors. He is professional, friendly, fair in pricing. Out of 5 stars, I give them 10!
Mold RemovalSouth Jersey office
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Leonard Y.
Thank you Tom, Tony, Mark and the mold team! Tom you saved us twice. You are aces. The team did an awesome job. Not once did they slow down - working as a team they completely emptied the basement. MasterTech proved to be the MOST reliable and professional of all!
Mold Removal & Water Damage CleanupSouth Jersey office
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Kendall N.
Extremely pleased. Great customer service. They were very knowledgeable and informative on the situation. Easy to work with. Most of all, I felt they were honest and trustworthy which you don't see from many companies. Thank you.
Mold TestingSouth Jersey office
A
Annie B.
Such a pleasure to work with. He was very direct and informative of what we needed to do. Super friendly, and the hours that they were willing to come out are super convenient - we didn't have to take an entire day off. I would definitely recommend to others!!
Mold AssessmentSouth Jersey office
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Joe A.
Great company, great integrity! Always a pleasure to work with and I think their prices are very fair. There are many companies out there trying to rip off people with crazy prices, not MasterTech. They came in, did the job very quickly and helped us with our basement issue. Good guys. I always recommend them.
Mold Testing & Mold RemediationSouth Jersey office
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Michal K.
Master Tech Environmental did a great job from the estimate/testing till the completed work. Very respectful and professional. I was made aware of every process.
Mold Testing & Mold RemediationSouth Jersey office
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Steven S.
I do extensive due diligence when hiring any contractor and I have high expectations. I rarely write reviews as meeting my expectations does not really warrant praise. However Mastertech's technicians exceeded my expectations remediating a mold issue in my home caused by a leaky pipe in the wall. They expertly contained the work area to prevent spreading contamination and removed all infected materials and thoroughly cleaned what remained. They worked diligently, quietly and left the work area cleaner than when they arrived. Good job!
Mold RemediationSouth Jersey office
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Frances R.
Wonderful company to work with. Highly recommend Master Tech. Everyone was friendly and professional. I give them 5 stars out of 5.
Mold TestingSouth Jersey office
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Cristina F.
These guys were great! Very friendly. Super thorough. I now smell no mold, and instead smell a clean basement/sub basement. They recommended dehumidifiers and answered any and all questions I had. Would highly, highly recommend MasterTech Environmental.
Basement Mold RemediationSouth Jersey office
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Bradford P.
MasterTech proved to be the MOST reliable and professional of all! Workers showed up on time and left the space cleaner than when they first arrived. Many months later, no more mold, smell or respiratory problems. I feel confident that they will continue to respond if I have any future issues.
Basement Mold RemediationSouth Jersey office
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Tim L.
Great job, very professional, quick and neat. Left no mess behind and answered all my questions clearly. Would recommend.
Read enough of these and the same four things come up. They are not accidents — they are how the inspection is deliberately run.
Fast turnaround
Lab results and the written report land in one to two business days after the visit, because most people are waiting on them to make a decision about a house or a repair.
Plain explanations
Spore counts and genus names mean nothing on their own. I go through the report with you and tell you what is normal, what is not, and what I would do about it.
Answers after the report
Questions rarely stop when the report arrives. Call or text me a photo weeks later and you will still get an answer — that is included, not billed.
No pressure
I do not sell remediation, so I have no reason to inflate what I found. Sometimes the honest answer is that you do not have a mold problem at all.
I cover York and the towns around it — basically anything within about 7 miles of 2400 Taxville Rd, York, PA 17408, plus a good bit of York County beyond that. If you're close and don't see your town, call me anyway.
You reach me directly, and I'm the one who shows up and does the inspection. Most weeks I can be out within a couple of days, sooner if you're up against a closing date.
Independent, lab-verified mold testing with no pressure and no upselling. Call or send a few photos and I will tell you what I think you actually need.