@Bakersdozen - I agree that moving to another area is a pretty major thing to do to deal with mold spore allergies. It's not an option for me but I have found other ways to help myself.
I was persuaded to try out a homeopathic practioner and she advised me to look at my diet. These days I rarely eat butter, chocolate, nuts, sugar and general high fat foods. It's not always easy to follow this kind of eaing plan but the mold allergy relief I've experienced keeps me on it, most of the time.