Establishment, attestation, and location. The boundaries of the zoning districts are shown on the Official Zoning Map of Preston, Maryland, which together with all notations and explanatory matter thereon is hereby made a part of this chapter. The Official Zoning Map shall be properly attested and shall remain on file at the Circuit Court of Caroline County, with such copies as may be necessary remaining on file in the Town office.

Changes to Official Zoning Map. If, in accordance with the provisions of this chapter, changes are made in district boundaries or other matter portrayed on the Official Zoning Map, such changes shall be entered on the Official Zoning Map promptly after the amendment has been approved by the Town Commissioners. No changes of any nature shall be made on the Official Zoning Map or matter shown thereon except in conformity with the procedures set forth in this chapter. Any unauthorized change of whatever kind by any person shall be considered a violation of this chapter and punishable as provided under § 210-19.

Replacement of Official Zoning Map. In the event that the Official Zoning Map becomes damaged, destroyed, lost, or difficult to interpret because of the nature or number of changes and additions, the Town Commissioners may by resolution adopt a new Official Zoning Map. The new Official Zoning Map may correct drafting or other errors or omissions in the prior Official Zoning Map, but no such correction shall have the effect of amending the original Official Zoning Map or any subsequent amendment thereof. The new Official Zoning Map shall be properly attested, and a notation of the date of adoption shall be entered on the map. Unless the prior Official Zoning Map has been lost or totally destroyed, the prior map and any significant parts thereof remaining shall be preserved, together with all available records pertaining to the adoption and amendment of the prior map.

Rules for interpretation. Where uncertainty exists as to the boundaries of districts as shown on the Official Zoning Map the following rules shall apply:

Interpretation by Board of Zoning Appeals. Where physical or cultural features existing on the ground are at variance with those shown on the Official Zoning Map, or under circumstances not covered under Subsection A, the Board of Zoning Appeals shall interpret the district boundaries.

Parcels divided by district boundary lines. Where a district boundary line divides a parcel which was in single ownership at the effective date of this chapter, the Board of Zoning Appeals may permit, as a special exception, the extension of the district regulations for either portion of the parcel not to exceed 50 feet beyond the district line into the remaining portion of the parcel.