Mould is a type of fungus that can be found all around nature, typically causing problems when it begins to spread because mould spores land on different surfaces. It's important to keep the property dry as this will prevent any organic matter from being broken down and you'll have less of an issue with mold growth in your damp area.
In the damp areas of your house, mould can grow that may lead to illnesses. These include kitchens, laundries and bathrooms - all places where water is present at least some of the time.
The inside locations for mold growth are pretty clear: if you have a kitchen with wet walls or laundry room floors from leaks in pipes above them then these should be under observation for prevention against moulds getting out of hand.