Mold problem with tenants

[Jessie MacDonald]

Looking for any advice on what to do when a rental property has mold. Some info for you, we’ve owned this property for 4 years and have never had issues with mold in either unit until the current tenants moved in January 2024. Last winter, they notified us that there was mold growing in 2 of the bedrooms and condensation forming on the ceilings. We immediately took action and found out they had turned the heat off when the temperatures were below freezing. We then cleaned all of the mold and reinsulated the attic. Fast forward to now, and they say the mold and condensation is back and it’s bad for their child’s health. They’ve insisted they are keeping the heat on. Any advice on what to do in a situation like this would be greatly appreciated!!

[Nathan Gesner]

Quote from @Jessie MacDonald:

This is a growing complaint from tenants. I address it in detail in my book, but here's the short version:

1. Mold requires moisture and food (dust is enough). Remove the source of moisture and the mold will disappear.

2. Mold dangers are dramatically exaggerated. In most cases, the mold is not airborne and causing health problems. It may impact someone who already has an existing respiratory issue, but it won't cause illness in a healthy individual.

I recommend inspecting the property and determining the source of moisture. It is typically caused by excess humidity (showering or cooking) and can be resolved by teaching the tenant to use ventilation fans and airing out the home once a week for 10-15 minutes. If the tenant is causing the moisture, they are responsible for removing the mold or hiring someone to do it. If the mold is caused by a leaking pipe or water getting in from outside, then you should hire a contractor to stop that intrusion immediately, then dry out the home and remediate the mold at your expense.

I also recommend reading and sharing the EPA Mold Guide. It will go a long ways to help you deal with the issue and your tenants: https://www.epa.gov/mold/brief-guide-mold-moisture-and-your-...