Who to Call for Mold: Inspector, Remediator or Hygienist

Who you call for mold depends on two things: whether you can see it, and whether water is still feeding it. Visible growth larger than about 10 square feet, or growth inside a wall, ceiling or duct, is a job for a mold remediation company. A musty smell with nothing visible is a job for an independent mold inspector. Illness, a lawsuit or an insurance dispute calls for an industrial hygienist. And if the mold sits on something still wet from a leak, the water is the first call, because mold removed from a wet wall grows back.

Inspector, Remediator or Industrial Hygienist: Who Does What

Most wasted money on mold comes from hiring one of these to do another's job.

• Mold inspector (assessor). Finds and measures the problem: a moisture survey, sometimes air or surface samples, and a written report of where the mold is, what feeds it and what has to come out. Look for a credential such as ACAC's CMI and, where the state licenses it, an assessor license.
• Mold remediator. Removes it: containment so demolition does not spread spores, HEPA air filtration, removal of porous material that cannot be cleaned, then a check of the result. The standard is IICRC S520; look for AMRT-certified technicians.
• Industrial hygienist. An occupational-health scientist, ideally a Certified Industrial Hygienist (CIH). Brought in for illness, a disputed scope, or clearance on a large job that must stand up to scrutiny.

Who Should You Call First for Mold?

The 10-square-foot line comes from EPA's guidance for homeowners. Under that size, with gloves, an N95 and detergent, most people can handle it. Growth that keeps returning to the same spot is not a cleaning problem; it is a moisture problem.

The Conflict of Interest in Inspect-and-Remediate

A company that sells removal has a reason to find something to remove. That is why some states that license mold work, Texas and New York among them, bar the same company from assessing and remediating the same project. Where your state does not require it, separate the jobs yourself: someone who sells no removal writes the scope, and remediators bid against it. A "free mold inspection" from a removal company is an estimate, and should be read as one.

The separation matters most when the mold is hidden. When growth is plainly visible across a basement wall after a leak, paying an inspector to confirm it mostly buys delay. Call the remediator and put the independent check at the end, where it tests whether the work was done.

When Is Mold Testing Worth Paying For?

EPA's position is that when mold is visible, sampling is usually unnecessary: it comes out whatever the species. Testing earns its fee when:

• You smell it but cannot find it. The inspector is really looking for wet material, with a meter and a thermal camera; samples back that up.
• Someone needs a document. A landlord, buyer, insurer or lawyer will want an independent report.
• Someone is sick. That is a hygienist's job.
• The work is finished. Post-remediation verification by someone other than the company that did the work is worth paying for on almost every professional job.

Hardware-store kits tell you mold spores exist, which they do in every house. The certified mold inspector guide covers credentials, and mold inspection costs covers the visit and the lab.

Check the License Where Your State Issues One

Only a few states license mold work specifically, among them Texas, Florida, New York and Louisiana; Texas requires a licensed remediation contractor once the affected area passes 25 contiguous square feet. Elsewhere, check the general contractor license, if your state has one, and IICRC certification. The mold license lookup searches the state records where they exist and says plainly where there is no mold license to check.

Who to Call for Mold and Water Damage

Mold after a leak is a water problem first: wet material behind the visible patch keeps growing mold after the patch is cleaned. The order:

1. 1Stop the water feeding it. Close the fixture valve or the main. A plumber fixes a failed pipe, but only drying stops the mold.
2. 2Measure what you can see. Photograph the growth with a tape measure in the frame, note what it is on and how long it has been wet, and do not scrub or cut into it; that spreads spores.
3. 3Call the professional that matches. If materials are still wet, that is a water damage restoration company, and most are also set up to remove the mold that came with the water. If it is dry and old, use the table above.
4. 4Document it for insurance. Mold that follows a sudden, covered water loss is usually part of that claim; mold from a slow leak or humidity usually is not. Open the claim with the water loss, not weeks later with the mold.

Wet paper-faced drywall can grow mold in 24–48 hours, which is why a leak that is still wet goes to the water company first. The who to call for water damage guide covers that half.

Who to Call for Black Mold Removal

Color does not tell you the species, and the species does not change the job; EPA and CDC both say to treat all indoor mold the same way. Stachybotrys, the mold people mean by "black mold", needs cellulose that has stayed wet a long time, so finding it usually means a wall, ceiling or subfloor has been wet for a while. That is a remediation company's job, not a bottle of bleach. Confirmed Stachybotrys adds $800–$3,000 to the scope for the same area, for protective equipment, disposal and longer containment. How to remove black mold safely covers the small patches you can take on yourself.

Who to Call for Mold in a Basement or the House

In a basement, mold that followed a burst pipe, a water heater, a failed sump pump or a sewer backup is a restoration and remediation job; basement mold remediation explains the scope. Mold from groundwater seeping through the walls every spring needs a drainage or waterproofing contractor for the moisture, a different trade and not what our line is for. Elsewhere in the house, a musty smell with no visible source goes to an inspector; the musty smell in house guide lists where to look first.

Who to Call for Mold in an Apartment

If you rent, the building is your landlord's to repair, and the landlord hires the company. Tell the landlord or manager in writing, dated, with photographs and anything you know about the water source, and keep a copy; a written notice is what your state's habitability rules run from. If nothing happens in a reasonable time, the local housing or health department is next. Who fixes mold in an apartment covers the letter.

How Much Mold Removal Costs

National ranges for the remediation scope only; most residential jobs land within $1,500–$12,000.

Homeowners policies usually cap mold separately, somewhere in $1,000–$10,000; your declarations page has the number. The mold remediation cost page breaks the ranges down.

What Happens When You Call

If you have mold, or water that is about to become mold, (888) 840-6512 is answered 24/7, and there is no charge for the referral. So you do not hang up in the menu:

• A short automated menu answers. Press 2 for mold, or 1 for water damage if something is still wet.
• Enter the 5-digit ZIP of the property.
• The line goes quiet for about half a minute while it connects. That is normal. Stay on.
• When a company answers, describe where the mold is, roughly how big, what it is growing on, and whether anything is still wet.

Mold companies take calls in fewer ZIPs than water companies. If a mold company is taking calls in your ZIP, the line connects you; if not, it says so, and the IICRC's certified-firm locator at iicrc.org or your state's license list is the next place to look.

Have ready the address with ZIP, when the water started or you first noticed the mold, what is wet or growing now, and whether you have opened an insurance claim. The company gives you an arrival window for your address on the call. Scope and price are between you and that company: ask for the scope in writing and, on a larger job, an independent clearance check before the final payment.