Great experience with Healthy Building Science. Their inspector was knowledgeable, thorough, and did an excellent job explaining everything in a clear and approachable way. I really appreciated the practical guidance and professionalism throughout the process--made a stressful situation much easier to navigate. Would definitely recommend. read more

Brandon did a great job; pointed out various problems I wasn't aware of. Pleasant and helpful.

These wonderful people were recommended by my Drs office , due to an ongoing mold issue at the house I rent. They were so super thorough compared to the last mold inspectors who seemed to be easily manipulated by the unfortunate behavior of my landlord. They found black mold (airborne and in the wall cavity) that the last place didn't or just decided to not tell me about, (probably the landlord telling them not to) that no one else was able to find, and sent a very detailed report, with pics, recommendations and an explanation of their findings. If you have any mold issues and / or a cheap, lying and sneaky landlord who's always trying to get over, and need some honest, reliable mold inspectors /testers that will find out exactly what's going on in the air and walls of your home, these guys are great! Definitely worth it! read more

Worked with Mr. Gores on getting my rental home inspected for mold after some bad tenants left. I was pleased with how cost effective and quickly Healthy Building Science came out and took care of the issue. Would highly recommend read more

Many thanks to Alex with Healthy Building Science for the outstanding communication, assistance and knowledge he provided in helping to address the mold issue in my residence! He was highly recommended to me by my doctor, and I can see why! read more

I have worked with Alex Stadtner [owner/project manager]and Alana Capozzi [project manager] for many years in different capacities. As a contractor working on their projects, as a client and have referred Healthy Building Science to many clients. They are very professional, the service is extremely detailed and they CARE about the Health and Safety of their clients. I would say they excel in trouble shooting & correcting healthy building issues, energy efficiency Improvements. Their project management skills and again, attention to detail is superior !! Robert Mitchell read more

I spoke with Lain Gors today from Healthy Building Science. Lain was very professional, knowledgeable, friendly and helpful. He gave me the information I needed and went out of his way to help me more than I expected. I recommend them highly. 100% rating. read more

The team at Healthy Building Science has been immensely helpful to me, both when I lived in Marin County, CA and now in the Boston area. They were able to educate me on mold, mycotoxins, and toxic chemicals and spent the time necessary on the phone answering my questions. My doctor and another friend recommended them to me- they are the gold standard in CA. Although they do not work in the Boston area, they were able to direct me to a company who does, which I appreciated. Highly recommend. read more

Healthy Building Science is the best! Responsive, comprehensive, high integrity mystery solvers. They also help you learn so much about your environment and how to keep it safe. We loved working with this company & would recommend them to everyone. read more

i gave a 5 star a few years ago to AnneLise. it was a 2 unit inspection. 3 hires. 2nd time was for mold and was some gas lighting happening- i mentioned overwhelming smell (person below does not believe mold can build on tiles or in bathrooms) so leaves windows closed with no fan and house is old. And humidity in home is 80-90 at times on hygrometer. (!) mold techs arrived during pandemic yet insisted no smell. they were wearing masks so not sure it would get through. yet every visitor here has mentioned musty smell from lower unit overwhelming the property especially passing on stairs - but mold technician kept insisting no smell eventually when results returned was told the "closet mold"organism of which there was medium count has an essential oil. also, the downstsairs apt was massively overlooked in both inspections bc neighbor did not have health complaints yet does suffer from severe respiratory allergies as well as lung, thyroid, and liver cancer in the pets. that was not disclosed to techs and neighbor did not realize mold is a respiratory irritant. no one checked CO or gas emissions in neighbor's apt . i live upstairs pointed ceiling in very old house so eek guess where the air flows?? i later called pg&e to test for free- they disconnected 4 gas appliances bc of how high CO emissions are!!! so i was chronically exposed to carbon monoxide due to neighbor.. eek i have no doubt my neighbor disarmed them w banter and talk to divert them as they inspected his unit. but if hired for inspection of both units- CO check should not be overlooked esp bc it is deadly. anyway all and all everyone needs this service. read more

What a wonderful company! I live in Florida where, IMO, concerns about healthy living are not as advanced as they are in CA. When I had a question regarding choices to make in a complete home renovation, I read an article published by Healthy Building Science and called to see if anyone there could answer my question. Ian promptly returned my call and provided the help I needed. I highly recommend you call if you have any reason to believe you are living in a toxic environment. read more

The best way to get the results you seek from HBS services is to bypass working directly with any contractors. Instead after paying for the initial consult and 30+ page report they give you then pay more money to have HBS babysit the contractors to make sure the contractors do the work that is asked of them which is outlined in the 30+ page report. initially I paid $1,225 it took approximately 1 1/2 - 2 hrs of time on site. Below is a detailed list of what was included: - VISUAL evaluation of Accessible flues - VISUAL evaluation of Ducts - VISUAL evaluation of Air filtration -And top-to-bottom VISUAL inspection of building for possible sources of indoor air contaminants -Includes a thorough visual inspection of building from top (roof/*attic) to bottom (*crawlspace) - Evaluate site and roof drainage (visually) and also use thermal imaging and moisture meters to scan for current moisture problems - Air testing on site (carbon monoxide, Mold & combustible gases) - 4 spore traps for Non-Viable Fungi Analysis Sampling We were provided with a very nice looking and professional 33 page report. It listed very good and very common sense recommendations. Sadly, I trusted a contractor to do the work that was outlined in the 30+ page report but the contractor thought they had all the answers and they insisted that their plan was right and that HBS plan was not right. I was so confused by this particularly because I was really sick at the time due to mold exposure from the apartment we were living in and was completely unable to understand what the right choice was. The contractor charged us 9K and now all the contractors work will have to be taken out and redone. It will have to wait a couple of years though as we have run out of money. I should have paid HBS to manage the contractor and then I would have avoided getting bad information from a lippy uncooperative contractor who did not know at all what they were talking about. Paying HBS to babysit the contractors will cost extra but in the end the work will be done right which save you the hassle of what we are now dealing with. Bottom line contractors are not the expert on healthy buildings don't take their advice if it contradicts what HBS says in their report. read more

We have used Healthy Building Science a number of times for various projects and have referred many friends to them with our highest recommendation. We've had the most contact with Alex, Gina and Jose and have found them all to be caring, competent and knowledgeable. They really pay attention to the speific situation and needs and want to help, offering their expertise generously. We think HBS is terrific! read more

I called this company because I just bought a house, and whenever I am in the office in the basement, I notice a chemical smell and have a mildly hard time breathing. They said that they can do an evaluation for $500 and that it will include the whole house. I said that I'm only interested in the basement office where I have the problem, but they said this is the only option. The inspector looked around the whole house and said a lot of the same things that were in the inspection report when we bought the house. I didn't get a lot out of it. In the basement, the inspector said the best thing to do would be to identify what the problem was and to remove it, but he could not identify the problem. He suggested a few things including putting away our organic cleaning supplies in a closet, filling in some gaps in the ceiling in between pipes, and getting a ventilation system. The information about the ventilation is different from what the HVAC person I had come out afterward told me. So, now it has been 3 weeks and I'm still getting sick everyday when I go to my home office to work. The really frustrating thing is that the inspector said they have the means to test if there are chemicals down here we should be concerned about, but that is a different service. In the end, we paid a lot of money, and aren't much closer to getting the problem fixed or even really identified. read more

My family recently moved into a rental home in Marin, and health being a high priority we called the folks at Healthy Building Science to give the house a good going over. Alex and his technician were on time and very thorough. I highly recommend being there for the whole inspection, my husband and I learned so much about EMF's and electrical safety amongst many other things. The team found a problem with our range hood fan and quickly took care of the problem. I highly recommend them. Thanks, The Feathers read more

Loved it. We have a lower apartment that has had a funny smell for years. I was worried it might be mold, but when looking for someone to check for mold, I found their blog post about how one could check for mold, but if it ISN'T mold that is the source of your problem, then you're still left with an unsolved challenge. They were on time, professional, thorough in their examination and extremely informative. I highly recommend them. read more

They were amazing all around, especially Anna-Lise. We had leaks and water damage and Healthy Building Science came out and did air testing for mold. They were so responsive and amazing and Anna-Lise especially really cared about explaining it all to us so we understood the results etc. I would definitely recommend them for any type of testing they do. They made a very stressful time much more bearable. read more

They are super responsive and came out within 24-hours for an emergency building inspection. The consultant was extremely knowledgeable but easy to understand when she explained the process of testing. They gave us realistic timelines and expectations and the report was easy to read even for someone who doesn't know anything about chemicals. Would highly recommend using them. read more

I primarily dealt with Melanie on the phone and David Sasse on site. Melanie was always attentive and available, and she treated my job like she cared about it. David was friendly, knowledgable, and very helpful, even helping me with some specific recommendations for building products to help prevent our mold issue from returning. I hope to never need a company like them again, but if I do Healthy Building Science will be my first call. read more

Alex, Laurel and Annalise have each done testing on homes I've helped buyers get into escrow. For my chemically sensitive buyers their testing services are truly lifesavers. Of the 5 times that my clients have had testing done, it's always been promptly scheduled, professionally performed and with detailed reports presented that are easy to understand. I give the service an unqualified thumbs up. read more

Hello Mr. Ramos My name is Robert Villarreal, I'm 21. I seen the great reports you had, in the exception of one which i see you were not at fault for. I'm an intern at century 21. Looking to step into home inspection ,and was wondering if you could give me some pointers. Far as equipment I should get to start off with ,where I should get certified what books I should read and what steps would be good to start. PLease if you can give me a response and thank you for your time have a great day. read more

Healthy Building Inspections run by Alex Stadtner is a great bau biologie/building biology service. In today's world where a lot of us are exposed to and can become ill from chemicals from toxic renovation materials, new carpets (very toxic), non-green conventional paint (very toxic), mold, and other environmental pollutants, it helps to have a professional look into your place of residence (home, apartment) to have it evaluated for healthiness as a building and to make sure you can live as healthy as possible in your home. Alex Stadtner is very friendly, knowledgeable and a certified bau biologist, professional, and attentive to his customers' needs. Please consider this business when thinking about possibly renting or buying a new home (or even checking out the current healthiness of your present home) to determine its healthiness (mold inspections, environmental pollutant inspections, EMF-electromagnetic field measurements/electro-smog). He can run all sorts of tests and at pretty reasonable rates too. read more

I was extremely impressed by Alex and Robert from HBI. They responded to my email within a few hours and were able to come to our house for an EMF inspection the next day. Robert was extremely knowledgeable on both EMF and RF testing as well as safety and health concerns. I would highly recommend these guys to anyone! read more

Alex Stadtner from Healthy Building Science is the most knowledgeable and qualified interior air quality consultant in the Bay Area. Alex and his firm are experienced and informed on all the health risks and illnesses possible when building a home. read more

I couple of years ago, while living in Colorado, I read an Angie's List article about Healthy Building Science. At the time I thought, "Wow, I wish we had someone nearby who offered those services." And, only a few short months later we moved to the Bay Areal! And so, I have had the opportunity to employ HBS twice to inspect our home. Cameron came out to do a building biology before we bought our condo. And then he came out again recently to do an EMF inspection at the advice of our doctor. Cameron is really nice and easy going. He was able to pick up on where our neighbors wifi is located and therefore where we are being most effected. He also picked up on a cordless keyboard & mouse that I had overlooked in my efforts to eliminate the EF, RF & MF within our home. My only complaint is that the services they offer are not more complete. IE, both times I have been left with more questions. And maybe this has more to do with expectations? For example, with the most recent EMF inspection I had expected to not only get the readings, but also know where they are coming from and see how our installation of demand switches lowered the EF. Unfortunately we didn't get a reading on the EF when the demand switches switched off the circuits and so I still don't know if our demand switches have lowered 2 higher EF spots close to our beds. And, with our original Building Biology a well water test was done rather than a city water test. We still used those results to buy a whole house water filtration system, but I'm left wondering why? So, in sum I have been pleased with my experiences with Healthy Building Sciences. I have been able to make improvements in the health of our home based on their assessments. I simply wish their assessments were more thorough. And I wish their report included resources of who might be available to help us implement the changes they recommend. Yet, with it being such a niche market maybe it's really difficult to find qualified professionals who understand how products & their installation affects the health of a building? After we install the shielding devices recommended, we will be having HBS come out again to inspect and also look into these 2 EF spots that I don't understand. read more

Thanks to Laurel at Healthy Building Science for a very helpful evaluation. She was very knowledgeable and explained everything she was doing and why it was important. I had some concerns, and she analyzed those areas but went beyond those to do a thorough evaluation of the entire place. She was very helpful in recommending what needs to be done. The company was easy to work with, in terms of understanding what was needed, making suggestions for what was needed, explaining pricing in advance, prompt scheduling and follow up exactly as promised. read more

I cannot recommend Alex Stadtner and Healthy Building Inspections highly enough! Out of many people we have consulted in regards to environmental issues in the home, he is by far the most knowledgeable, affordable, and thorough. Furthermore, he is incredibly kind and easy to work with. I give him 5 stars across the board. Alex did a comprehensive inspection of our home and wrote an exquisitely detailed report, full of photos and descriptions of changes both large and small we could make to our house to make it 'greener' and healthier. He also worked with us closely based on our needs and price points. He would be incredibly helpful to anyone with chemical or electrical sensitivities, but also to families simply looking to making their homes 'greener' and less toxic overall. He has a wide knowledge base and gave us many, many helpful suggestions about improvements we could make that we would have never known to make otherwise. Alex's inspection is also extremely well priced; other consultants we interviewed were planning to charge 3 times as much, and for a far less comprehensive work-up. This is just one of the many great things that sets Alex and Healthy Building Inspections apart from others in the industry. We are so grateful to have found him, and absolutely recommend him to anyone! read more

Alex and Gina were both very helpful and shared a lot of great information to help with our home search. Healthy homes are so important, and there are some challenges to that in our modern times. I'm glad to have access to a company like Healthy Building Science to help us make good decisions! read more

Very helpful and knowledgeable when I called for guidance and information. I would hire this company if I had the need.

Alex was great, clear, friendly. We got educated about all the issues we asked concerning EMF and RF. We were able to make some small adjustments that made a big difference and wouldn't have figured it out without him. read more

A very professional and helpful organization! They are very responsive. Their examination of the home is thorough and the report is detailed and helpful. They found a problem with my house that no one else had been able to find. Once it was identified we were able to fix it. Today I called them again about potential water damage to another home. The home is outside of the area that they normally cover. They still responded quickly and put me in touch with a restoration and remediation company that was equally as helpful and professional. When you meet them you have the sense that the are very honest and scientific in their examination. They are also very reasonable and easy to talk with about the situation. read more

I called these guys up for advice about a mold infestation in my building. They gave me great advice, even though it turned out that their services wouldn't help me. They gave me a direct office number to the county official I needed to talk to, and send me happily on my way. I'm not even a customer and these guys did me a solid, and showed themselves to be knowledgeable and competent at the same time. Highly recommended! read more

As some of the others have said, these guys took a very scientific approach to the inspection. Kevin did our inspection and was very thorough and patient. I peppered him with questions throughout the 3 hour process and he was knowledgeable and amenable to answering all my queries. I like that these guys understood the science behind VOCs, pollutants, and mold are well versed in scientific journal articles, in addition to the standard building construction knowledge. The air sample and mold sample reports that came back were very detailed and compared our sample against thousands of others that the lab analyzes every year. I talked to quite a number of different air quality vendors and glad we went with HBS. read more

Alex and team, specially David Sasse was awesome and exceeded our expectations with our house inspection and improvements in crawlspace and also indoor air quality recommendations. Indeed strongly recommended team for making the house/building healthier. read more

Anyone with children should call Healthy Building Science. Alex Stadtner will come to your house, and tell you if it is "sick" or not. He is amazing. Alex has the technology to measure a multitude of possible toxic sources in a home. He can even tell you the best place in a room to place a child's bed. I highly recommend his service. read more

As a restaurant it's important we have the safest possible environment for our employees and customers. We went to HBS with a number of concerns which they responded to with a comprehensive plan and a process that was extremely professional. The expertise they offered uncovered even areas that we hadn't even considered, but the execution of their services left us feeling completely confident that no stone was unturned. Their services have given us more than a safe workplace, they've given us peace of mind. Highly recommended. read more

Alex Stadner offers a very valuable service through Healthy Building Inspections. If you have any concerns related to the possibility of environmental contaminants in your home and you'd like a professional assessment, Alex is the person to call. He offers a wide range of techniques for inspecting and evaluating your living space (ranging from fairly simple, low-tech, and reasonably-priced to higher tech and slightly more expensive). He works with you in an individualized manner and tailors the inspection & recommendations in a way that reflects your unique health & living-space concerns (as well as economic and other considerations). In today's world, it is truly refreshing to find a professional who operates with such a high level of integrity. Other pluses? Alex is clearly knowledgable about building biology and is experienced in dealing with a wide range of issues, such as mold, chemical pollution, VOC's from remodeling or other sources, EMF levels, etc.). He is a great listener and a serious and dedicated professional. At the end of the inspection, after having processed the data collected, he provides a thorough report, which includes photos and suggestions for remediation or measures that should be taken. Without hesitation, I highly recommend Alex Stadtner and Healthy Building Inspections! read more

My doctor recommended I contact Alex after we did an ERMI mold test at our home. Since we already had a lab report and knew where the mold was, Alex suggested it might not be worth the expense of having Healthy Building Science come out to do more testing. He referred me to a couple of local mold remediation companies and also gave me advice about air filters. I really appreciated his kindness and honesty in leveling with me about our situation and if I had a problem or concern, I would go back to Healthy Building Science in a minute. Alex seemed to really care and wasn't trying to sell me on something, which gave me an enormous sense of trust. He was incredibly generous with sharing information and his expertise. Thank you Alex ! read more

I reached out to Healthy Building Science because of an issue I'm having with chemical fumes from a pesticide treatment done by a contractor in my home's crawl space. Alex called me back within a couple hours of my initial email and phone call. He was straightforward, easy to talk with, and had very helpful advice. Based on our conversation, I'm hopeful our problem will resolve itself with time, but if it doesn't, I know who I'm going to be back in touch with to get additional assistance! read more

Absolutely the number one go to company for any questions or concerns about environmental testing. Complete confidence in Alex and his team! Very experienced, knowledgeable and trustworthy. We recently relocated from Northern to Southern California and still will contact Alex for his expertise. Many thanks to Alex and all his team for making the world a better place! read more