Mold and Buying a Home in Nevada

How mold and moisture show up in a Nevada home purchase: what the seller’s disclosure form asks, how a mold inspection fits into your inspection period, what it does and does not replace, and what to do with the results.

What the seller’s disclosure form asks

Most sellers of Nevada homes with one to four units must complete the Nevada Real Estate Division’s Seller’s Real Property Disclosure Form (Form 547; the version posted by the Division is marked “Revised 6/1/2023”). Two questions are directly relevant:

• Under “Structure,” item 1(a): “Previous or current moisture conditions and/or water damage?”
• Item 7, “Fungi / Mold”: “Any previous or current fungus or mold?”

The form states that any “Yes” answer “must be fully explained” on its explanation page. Read those explanations closely, and ask for any repair invoices, remediation paperwork, or prior test reports the seller mentions.

Know the limits of the form, too. NRS 113.130 requires the completed form to be served “at least 10 days before residential property is conveyed,” subject to listed exceptions such as foreclosure sales and the first sale of a home built by a licensed contractor. NRS 113.140 says the law “does not require a seller to disclose a defect in residential property of which the seller is not aware,” that the completed form “does not constitute an express or implied warranty,” and that it does not relieve a buyer “of the duty to exercise reasonable care to protect himself or herself.” The form itself advises that the buyer “may wish to obtain professional advice and inspections of the property,” and the Division’s Residential Disclosure Guide says the disclosure “is not a guarantee nor does it take the place of an inspection.”

If a seller discloses a defect after the form is served but before closing, NRS 113.130 and 113.150 describe options that include rescinding the agreement, with rescission under NRS 113.150 effective only if “made in writing, notarized and served not later than 4 working days” after the buyer is informed. Deadlines like these are exactly why you should involve your agent or an attorney promptly.

Fit it into your inspection period

The disclosure statutes above do not set an inspection period. How long you have for inspections and due diligence, and what you can do with the results, comes from the terms of your purchase agreement. Confirm the dates with your agent. Because a mold inspection may involve lab analysis, book it early in the window rather than near the end. Vegas Mold Pro often has same-day appointments available, and written reports are typically delivered within 24 hours, but leave yourself room to ask follow-up questions or bring in a contractor.

How a mold inspection differs from a home inspection

In Nevada, home inspectors are regulated under NRS Chapter 645D, “Inspectors of Structures and Energy Auditors,” administered by the Real Estate Division. The chapter defines an inspection as “a physical examination of the mechanical, electrical or plumbing systems of a structure or of the structural components of a structure,” and the Division issues certificates to qualified inspectors. You can check an inspector’s status through the Division’s license lookup.

Nevada’s regulations also say what a certified inspector should not do during an inspection. NAC 645D.470 includes determining “the presence or absence of any suspected adverse environmental condition or hazardous substance, including, but not limited to, toxins, molds and other fungi … unless he is licensed or certified to make such inspections and determinations.” So a general home inspection report may note stains or signs of past leaks without telling you whether mold is present.

A mold inspection is narrower and deeper on one topic. It looks for visible growth, water staining, musty odors, and elevated moisture in building materials, and, where warranted, collects samples for an independent AIHA-accredited laboratory. It does not rate the roof, test appliances, or judge whether systems work. We do not offer general home inspections. Details on scope are on our mold inspection page.

What to watch for during showings

• Fresh paint or new drywall patches on a single ceiling or wall section, especially below bathrooms.
• Staining, warping, or soft spots in the cabinet floor under sinks.
• Rust or water marks around the water heater, the air handler, or the condensate line.
• A musty smell that is stronger in one room or when the air conditioning starts.
• Swamp cooler history and the ceiling area around its duct. See swamp cooler mold.

Our guide to moisture sources in Las Vegas homes covers these in more depth.

Timing air samples

Air samples are a snapshot. Results can shift with how the house was used beforehand: open windows, a running evaporative cooler, recent cleaning dust, or a vacant home with the air conditioning off. Outdoor conditions matter too, which is why an outdoor reference sample is collected the same day. When you book, we’ll ask about the home’s current state so sampling can be planned sensibly. EPA notes that when mold is plainly visible, sampling is usually unnecessary; sampling is most useful for suspected hidden growth or to document conditions. Methods are compared on mold testing methods.

Reading the results

There is no federal pass/fail number. EPA says no federal limits have been set for mold or mold spores, so sampling cannot show compliance with a federal standard. Results are read by comparing indoor samples to the outdoor reference and to each other, and together with what the inspection found. Our guide on how to read a mold lab report walks through a report line by line, and you can view a sample report.

Negotiating: general options

If the inspection finds a moisture or mold problem, buyers commonly discuss options such as:

• Asking the seller to correct the moisture source and have remediation done by a qualified contractor before closing.
• Requesting a price adjustment or credit so you can handle the work after closing.
• Asking for independent post-remediation verification before closing.
• Using any rights your contract gives you to cancel within the inspection period.

Which options are available depends on your contract and deadlines. Your agent or attorney should guide that decision; we provide the findings, not negotiating advice.

Clearance after remediation

If a seller has mold remediated, ask how completion will be verified. EPA’s remediation guidance says the water or moisture problem must be completely fixed, visible mold, mold-damaged materials, and moldy odors should not be present, and, after remediation, indoor air samples should be similar in type and concentration to local outdoor air. EPA also calls the end point “a judgment call.” Because Vegas Mold Pro does no remediation, the person checking the work had no part in doing it. A clearance report describes conditions on the day of sampling; it is not a certificate or a guarantee.

Sources

• Seller’s Real Property Disclosure Form 547 — Nevada Real Estate Division
• NRS Chapter 113, Sales of Real Property — Nevada Legislature
• NRS Chapter 645D, Inspectors of Structures and Energy Auditors — Nevada Legislature
• NAC 645D.470, Prohibited Acts — Nevada Legislature
• Inspectors of Structures — Nevada Real Estate Division
• Residential Disclosure Guide (July 2017) — Nevada Real Estate Division
• Mold Testing or Sampling — U.S. EPA
• Mold Remediation in Schools and Commercial Buildings, Chapter 3 — U.S. EPA