Buying a house in Florida means a stack of professionals walking the property on your behalf. The home inspector checks what can be seen and reached. The wind mitigation inspector checks the roof attachments. Maybe a termite inspector crawls the attic. All useful. All working with their eyes.
None of those inspectors can smell inside the walls, and in Florida that is where the problems live.
Why Florida houses hide their moisture history
Every house you tour has a history you're not told. A roof that leaked for two summers before it was replaced. A water heater that let go while the sellers were on vacation. An AC closet that dripped quietly through a previous owner's entire tenure. In Florida's humidity, any of those events can leave something growing in a wall cavity, and the repair that followed usually fixed the water without checking what the water fed.
By the time you tour the house, everything is painted, dried, and staged. The sellers aren't necessarily hiding anything. Often they never knew, and the disclosure form only asks what they know.
What a visual inspection catches, and what it can't
A good home inspector will flag active leaks, stains, soft spots, and moisture readings where they can reach. Their report is worth every penny. But their tools stop at the surface. A moisture meter reads the spot it touches. A flashlight shows the drywall, not the cavity behind it. If the problem dried out last month, or lives behind the kitchen cabinets, a visual inspection can honestly come back clean while the wall quietly disagrees.
None of this is a criticism of home inspectors. Eyes and handheld tools have a limit, and a trained detection dog covers the part past that limit.
Where the dog fits in your timeline
A dog sweep slots neatly into a standard inspection period. The dog works the entire house room by room in a single visit, nothing gets opened or moved, and the sweep doesn't interfere with any other inspection you've scheduled. You get a summary of every spot where the dog alerted, promptly enough to act on it.
Then the alert map becomes a negotiating tool. If the dog alerts at the master bedroom wall, you can bring in a licensed mold assessor to test that exact spot while you're still inside your inspection window, and either walk away, negotiate, or proceed with facts. If the dog goes through the entire house without a single alert, you have something no disclosure form can offer: a clean sweep from a dog with no stake in the sale.
The cost math
Buyers sometimes hesitate at adding one more line item to an already expensive month. Fair. But consider what the alternatives cost. Mold testing across an entire house runs several times the price of a targeted test, and discovering a moisture problem six months after closing costs more than every inspection on the list combined. A sweep is the cheap step that tells you whether the expensive steps are needed at all.
We do pre-purchase sweeps across all of Florida, and we're used to working around closing timelines. If you're under contract and something about the house smells wrong, send us the details. The dog works fast, and closings don't wait.