1. The incorporated areas of the Town are hereby divided into zones, as shown on the Official Zoning Map which, together with all explanatory matter thereon, is hereby adopted by reference and declared to be a part of this chapter.¹
2. The Official Zoning Map shall be identified by the signature of the Town Council attested by the Town Clerk, and bearing the seal of the Town under the following words: "This is to certify that this is the Official Zoning Map referred to in § 170-1 of the Zoning Ordinance of the Town of Centreville, Maryland," together with date of the adoption of this chapter.
3. If, in accordance with the provisions of this chapter and Article 66B, § 1.00 et seq., Annotated Code of Maryland, changes are made in zone boundaries or other matters portrayed on the Official Zoning Map, such changes shall be made on the Official Zoning Map promptly after the amendment has been approved by the Town Council, together with an entry on the Official Zoning Map as follows: "On (date), by official action of the Town Council, the following (change or changes) were made in the Official Zoning Map: (brief description of nature of change)," which entry shall be signed by the Town Council and attested by the Town Clerk. The amending ordinance shall provide that such changes or amendments shall not become effective until after such changes and entry have been made on said map.
4. No changes of any nature shall be made in the Official Zoning Map except in conformity with the procedures set forth in this chapter. Any unauthorized change of whatever kind by any person or persons shall be considered a violation of this chapter and punishable as provided under § 170-68 of this chapter.
5. Regardless of the existence of purported copies of the Official Zoning Map, which may from time to time be made or published, the Official Zoning Map which shall be located in the Town Hall shall be the final authority as the current zoning status of land and water areas, buildings, and other structures in the Town.
   

¹ Editor's Note: The Official Zoning Map is included as an attachment to this chapter.

1. 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 Council may by resolution adopt a new Official Zoning Map which shall supersede the prior Zoning Map.
2. The new Official Zoning Map may correct drafting or other errors or omissions in the prior Official Zoning Map, but no such corrections shall have the effect of amending the original Zoning Ordinance or any subsequent amendment thereof. The Planning and Zoning Commission shall certify as to the accuracy of the new Official Zoning Map prior to its adoption by the Town Council. The Official Zoning Map shall be identified by the signatures of the Town Council attested by the Town Clerk, and bearing the seal of the Town.
   

1. Official Critical Area Overlay District Map shall be prepared and maintained in force as part of the Official Zoning Map of the Town of Centreville. They shall delineate the extent of the Critical Area Overlay District (O) wherein special regulations, applicable only to the Critical Area District, shall apply in addition to other provisions of this chapter. In the event of inconsistency between the provisions of the Critical Area Overlay Zone provisions and the provisions established elsewhere in this chapter, the more restrictive or stringent provisions shall apply.
2. The Critical Area Overlay District shall correspond to the Chesapeake Bay Critical Area. The Critical Area Overlay District shall include all lands and waters defined in § 8-1807 of the Natural Resources Article, Annotated Code of Maryland. They include:
   1. All waters of and lands under the Chesapeake Bay and its tributaries to the head of tide as indicated on the state wetlands maps, and all state and private wetlands designated under Title 9 of the Natural Resources Article, Annotated Code of Maryland.
   2. All lands and water areas within 1,000 feet beyond the landward boundaries of state or private wetlands and the heads of tides designated under Title 9 of the Natural Resources Article, Annotate of Maryland.
   3. Modification to these areas through inclusion or exclusion proposed by the Town of Centreville and approved by the Chesapeake Bay Critical Area Commission as specified in § 8-1807 of the Natural Resources Article, Annotated Code of Maryland.
3. All land in the Critical Area Overlay District shall be assigned a land use management classification, as designated in the Centreville Critical Area Program, which shall appear on the Critical Area Overlay District Map. Within the designated Critical Area, all land shall be assigned one of the following land use management classifications:
   1. Intensely Developed Area (IDA).
   2. Limited Development Area (LDA).
   3. Resource Conservation Area (RCA).
      

1. Purpose. Floating zones are zones which have areas designated for them in the Centreville Comprehensive Plan, but which are not mapped out in detail at the time of adoption of the most recent comprehensive revision to the Centreville Zoning Ordinance. The purpose of the designated floating zones is to permit the mapping of areas for land uses that require little land area over the next 20 years. The designated floating zone provides a mechanism for the establishment of the district in appropriate areas, limiting the areas to be zoned and setting conditions that must be met by any development proposal seeking such a designation. Further, the procedure is two-stage so that the initial costs are not prohibitive.
2. Designation of floating zones:
   1. The following Special Zoning Districts are designated as floating zones:
      1. Planned Redevelopment Area District (PRA).
      2. Planned Unit Development District (PUD).
      3. Planned Business Development District (PBD).
      4. Growth Allocation District (Critical Area) (GA).
   2. The Town Council and Planning and Zoning Commission find that they are not able to locate these areas with precision in advance, and that it is desirable to leave specific locations and conditions for future determination as the Town grows and specific needs develop.
      

Where uncertainty exists as to the boundaries of zones as shown on the Official Zoning Map, the following rules shall apply:

1. Boundaries indicated as approximately following the center lines of streets, highways, or alleys shall be construed to follow such center lines.
2. Boundaries indicated as approximately following platted lot lines shall be construed as following such lot lines.
3. Boundaries indicated as approximately following Town limits shall be construed as following Town limits.
4. Boundaries indicated as following railroad lines shall be construed to be midway between the main tracks.
5. Boundaries indicated as following shore lines shall be construed to follow such shorelines, and in the event of change in the shoreline shall be construed as moving with the actual shorelines; boundaries indicated as approximately following the center of streams, rivers, canals, lakes, or other bodies of water shall be construed to follow such center lines.
6. Boundaries indicated as parallel to or extensions of features indicated in Subsections A through E above shall be so construed; however, distance not specifically indicated on the Official Zoning Map shall be determined by the scale of the map.
7. Where a lot is divided by one or more zone boundary lines, each of said divisions of the lot shall be subjected to the regulations of the district in which it is located.
8. Where physical or cultural features existing on the ground are at variance with those shown on the Official Zoning Map, or in other circumstances not covered by Subsections A through G above, the Board of Appeals shall interpret the zone boundaries.
   

The regulations set by this chapter within each zone shall be minimum regulations and shall apply uniformly to each class or kind of structure or land except as hereinafter provided:

1. No building, structure, or land shall hereinafter be used or occupied, and no building or structure or part thereof shall hereafter be erected, constructed, reconstructed, moved, or structurally altered externally, unless in conformity with all the regulations herein specified for the zone in which it is located.
2. No building or other structure shall hereafter be erected or altered:
   1. To exceed the height;
   2. To accommodate or house a greater number of families;
   3. To occupy a greater percentage of lot area;
   4. To have narrower or smaller rear yards, front yards, side yards, or other open spaces, than herein required; or
   5. In any other manner contrary to the provisions of this chapter.
3. No part of a yard, or other open space, or off-street parking or loading space required about or in connection with any building for the purpose of complying with this chapter shall be included as part of a yard, open space, off-street parking or loading space similarly required for any other building.
4. No yard or lot existing at the time of passage of this chapter shall be reduced in dimension or area below the minimum requirements set forth herein. Yards or lots created after the effective date of this chapter shall meet at least the minimum requirements established by this chapter.