Mold dog sitting before doing an inspection

Bay Area mold detection dog

Hi! We’re Fido Finds Mold.

We help people across the San Francisco Bay Area and beyond find hidden mold with our certified mold detection dog, Hee-do.

A man, woman, and dog posing in a woody area

Our team

We lived in toxic mold for years, not knowing what was causing our mysterious symptoms and struggling to find answers. Now, we’re passionate about helping others going through a similar experience.

Simon and our dog, Hee-do, were trained and certified by renowned master trainer Bill Whistine. Before starting this work, Simon spent more than a decade in the healthy buildings space, focused on how indoor environments can support people’s health, wellbeing, and productivity.

We’re a small team, so we handle every inspection personally and take time to help our clients understand what’s going on with their space.

Learn more

Our services

Before & after remediation

An inspection before and/or after remediation to check whether mold is still present or if more work may be needed.

Residential inspections

An inspection of your home to look for possible mold when you’ve noticed musty smells, have unexplained symptoms, want to catch small issues early, or just want peace of mind.

House or apartment hunt

A quick-turnaround inspection when you’re considering a new home, to get more information about the space before signing a lease or making an offer.

Commercial property inspection

An inspection for offices, healthcare facilities, schools, hotels, and multi-unit or other shared environments.

Serving the San Francisco Bay Area

We provide mold dog inspections throughout the Bay, including:

San Francisco • Oakland • Berkeley • Alameda • San Jose • Palo Alto • Mountain View • Redwood City • San Mateo • Walnut Creek • Concord • Fremont • Mill Valley • San Rafael • Napa

If our schedule allows, we’ll also travel outside of the area, particularly:

Santa Barbara • The Central Coast • Santa Cruz • Sacramento • San Luis Obispo

Frequently asked questions

  • A mold detection dog is specially trained to locate mold quickly and non-invasively using scent. Mold releases odors that trained dogs can detect, even when the source is hidden, helping to find problem areas without unnecessary demolition.

    If you want to dive even deeper, we wrote an entire blog post on this topic: What is a mold dog?

  • Mold dogs like Hee-do can help find potential mold sources quickly, without opening up walls or drilling into surfaces—which is why many people choose to hire a mold detection dog rather than take more invasive approaches.

  • We work with people in all kinds of situations, including:

    • Homeowners dealing with moisture or past water damage

    • Renters trying to understand ongoing health concerns

    • Buyers and sellers during real estate transactions

    • Schools, offices, health care facilities, and other commercial spaces

    If you’re trying to figure out whether mold might be an issue (and where), a mold dog inspection can be a helpful place to start.

  • A mold dog with extensive training, like Hee-do, can detect mold with impressive precision. His sense of smell is around 100,000 times more sensitive than a human’s.¹

    His powerful nose, combined with his training, allows him to detect even trace amounts of mold. When a mold dog alerts to an area of interest, it’s an indication that the area should be considered for further evaluation.

    ¹ UCLA Health

  • We do not! Our inspections are non-invasive. Our mold dog, Hee-do, can identify mold hotspots without cutting into drywall or disturbing your space. He can also detect mold under baseboards and in other hard-to-reach areas.

  • No, we focus strictly on detection. That way, we stay unbiased and you can choose the right remediation team for your needs.

  • Not at all. Mold can affect air quality, building materials, and property value, whether or not you’re feeling symptoms. We work with renters, homeowners, real estate agents, and anyone looking for answers.

    That said, many of our clients contact us because someone in their household is sensitive to mold, and they’re trying to get a clearer picture of what might be going on in their space.

  • It depends. Pricing varies based on factors like the size of your space, where you’re located, and any unique property details. Reach out, and we’ll give you a clear, no-pressure quote based on your situation.

  • Sometimes, particularly to the Central Coast, Santa Cruz, Sacramento, and surrounding areas. Contact us to see if we travel to your area.

  • Just one! His name is Hee-do, and he works exclusively with his handler, Simon. Learn more about us here.

Get in touch

Have questions or ready to book a mold dog inspection?

Share a few details and we’ll get back to you soon.

Or, give us a call or text at (510) 822-0277.

  • “What stood out most was the genuine care and compassion we were shown. We never felt rushed, and it was clear they truly wanted to help us get answers and move forward. That level of customer service and professionalism is hard to find.”

    Amanda D.

  • “Such a great experience with Simon and Hee-do. We know how to address two spots and the third Simon gave us a clear outline of the steps we can take. Absolutely recommend!”

    Genevieve S.

  • “If you’re concerned or just want peace of mind about mold in your house, I highly recommend Fido Finds Mold. You’ll get the answers you’re looking with and a fun play date with a dog.”

    Nehama R.

  • “If you think you could have mold in your home in Alameda or the Bay Area, I highly recommend them.”

    Jay V.

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A mold inspection dog standing inside, looking out a glass door, with a harness on, and a shadow cast on the wooden floor.
A man sitting and petting a tan dog
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