Randy, it's my opinion if there are separate parcels, then each parcel must have it's own FZD. That's how I see the following:
(2) Instructions for Using the SFHDF
The reverse side of the SFHDF has detailed, section-by-section instructions on its use. A separate SFHDF is required on loans on adjacent properties. However, if a single property contains multiple buildings, a listing of buildings on the parcel can be attached to the SFHDF. Only one building may be insured under one NFIP policy. Each building securing a loan must be covered by a separate NFIP policy.
If there are multiple parcels, then I don't think you can consider it a single property.
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The opinions expressed are mine and they are not to be taken as legal advice.