Mold testing & sampling, analyzed by an accredited lab

Air samples, which capture what is airborne in a space and are the closest measure of what occupants are breathing. Surface samples, taken by swab or tape lift from a visible growth, which identify what that specific colony is. And wall cavity samples where growth is suspected inside an assembly. Which ones we take is decided by what the inspection found, not by a package.

It can indicate it. Air sampling can show elevated spore types indoors compared to the outdoor baseline, which suggests an indoor source even when nothing is visible, and cavity sampling can confirm growth inside an assembly. What testing cannot do on its own is point at the wall it is behind. That is what the moisture survey and the thermal imaging are for, which is why we do both together.

Not for the question you are asking. The settle plate kits grow whatever lands on them, and something always lands on them, because mold spores are present in every building on earth. A positive result tells you almost nothing, there is no outdoor comparison sample, there is no measurement of concentration, and there is no one interpreting it. If you have already run one and it came back positive, do not panic. It would have.

Because the indoor result is meaningless without it. Outdoor air always contains mold spores, and the mix and the count change with the season, the weather, and the day. The only way to know whether what is indoors is abnormal is to compare it against the outdoor air at the same property on the same day. Any indoor air result presented to you without an outdoor control is not interpretable, and you should ask why it is missing.

ERMI, the Environmental Relative Moldiness Index, analyzes mold DNA in a settled dust sample against a panel of thirty six species and returns a single score. It was developed by researchers at the Environmental Protection Agency, and we offer it, most often when a physician has asked for it. We also want you to know what the agency says about it, which is that it is a research tool, that it has not been validated for non research use, and that it is not recommended for routine use in homes. It can add a data point. It does not diagnose your house, and anyone selling you a score as a verdict is overstating it.

Yes, we can sample for mycotoxins, which are compounds certain molds produce. It is worth being clear about what the result means. A mycotoxin finding tells you the compounds are present in the sample. It does not establish a dose, it does not diagnose an illness, and no agency publishes a safe indoor level for them. We are happy to run it, particularly where a physician has asked for it, and we will report it honestly rather than dramatically.

It matters less than most people expect, and this is where the industry and the public health agencies disagree with the marketing. The Centers for Disease Control takes the position that whatever the type, mold indoors needs to be removed, and no agency publishes a species list that changes the remediation. Where species genuinely matters is in documentation, in a legal or insurance file, and in explaining a health picture to a physician. Those are real reasons, and they are why we identify it.

Not in the way the phrase implies. Black mold usually refers to Stachybotrys chartarum, which is one species among many, is not the only mold that looks black, and is not the only mold that matters. Plenty of ordinary mold is dark. The honest position, and the one the public health agencies take, is that the type is far less important than the amount and the moisture feeding it, and that any significant indoor growth should be removed regardless of its color or its name.

As many as the property needs to answer the question and no more. That is decided by the visual and moisture survey, which is why we do the survey first rather than arriving with a fixed sample count. Scattering samples around a house inflates the invoice without improving the answer, and a single sample in a house with three suspect areas answers nothing.

Yes. Where the heating and air conditioning system is suspected of moving or holding contamination, we assess the system and sample the air it delivers. Be careful of duct cleaning companies that offer a free mold test with the service, for the same reason we would not sell you a cleanup off our own report.

Usually a few business days from collection, after which we walk you through the report rather than emailing you a spreadsheet and leaving you to interpret it. Where a deadline is driving the job, a closing, a hearing, a tenant move out, tell us on the booking call and we will tell you what rush options are available.

Where moisture and mold were found, with photographs. The likely source of the water. The laboratory results for every sample, with the outdoor control alongside them. What those results mean for the property and the people in it, in plain language. And the recommended next steps, described in enough detail that a remediation contractor can scope and price from them. It is written to be handed to someone else, because it usually is.

On its own it is neither, and this is the most misunderstood part of mold testing. A spore count is only meaningful compared against the outdoor air at the same property on the same day and against what would be normal for that kind of indoor space. What we look at is whether the indoor mix is different from outdoors in a way that indicates an indoor source, not whether a number crossed a line.

No, and be careful with anyone who tells you otherwise. The Environmental Protection Agency states plainly that no federal standards or threshold limit values exist for airborne mold or mold spores, and California never adopted exposure limits either, despite a 2001 law directing the state to consider it. That is not a loophole, it reflects that people respond to mold very differently. It does mean no laboratory result can honestly be described as passing or failing a legal standard, and we will not describe one that way.

It is the phrase the industry standard uses for an indoor environment whose mold spores, in type and quantity, look like what you would expect for a similar building in that area, rather than like something growing inside it. Reaching that state is the goal of remediation, and confirming it is the purpose of clearance testing. It does not mean zero spores. Zero is not achievable and has never been the target.

They come from the ANSI and IICRC S520 standard for professional mold remediation and they describe three states of an indoor space. Condition 1 is normal fungal ecology. Condition 2 is a space contaminated mainly by settled spores that traveled from somewhere else. Condition 3 is a space with actual mold growth, whether active or dormant, visible or hidden. The purpose of remediation is to return a Condition 2 or Condition 3 space to Condition 1, and you will see these terms in contractor scopes.

Yes. It is yours, and it is built for exactly that. Contractors use it to scope and bid, insurers use it to establish what happened and when, and attorneys use it as the factual foundation of a claim or a defense. Because we do not sell remediation and take no referral fees, nothing in it is shaped by where it ends up.

The findings describe the property on the day we inspected it, and conditions change, particularly if water is still getting in. For a real estate transaction or a claim, a report within a few months is generally treated as current. For a dispute that has been running for a year, expect the other side to argue the conditions moved, which is why we date and photograph everything and why we are happy to return and document a change.

Yes. We walk you through the report rather than sending a laboratory sheet and leaving you to interpret it, and we will keep going until you can explain it to somebody else. That is the actual test of whether we did the job. A report you do not understand is a report you cannot act on or defend.

It already is. We document the condition, the moisture source, the sampling method, the chain of custody, and the accredited laboratory results, and we state findings rather than conclusions we cannot support. That is what makes a report survive scrutiny. The single most common reason a mold report fails in a dispute is that the company that wrote it also stood to profit from the cleanup it recommended, which is not a problem we have.

Get one, and we mean that. If our report says you do not have a problem and your instinct says otherwise, another certified inspector looking at the same property is a reasonable spend, and we will hand over our methodology so the comparison is fair. We are more interested in your property being right than in being the last word on it.