The purpose of this title is to outline the different zoning districts and the zoning map, floodplain overlay maps, and flood profiles subject to this Code.

To carry out the purposes of this Code, the City is divided into zoning districts, as listed in this subtitle and located on the zoning map, floodplain overlay maps, and flood profiles adopted under this Code.

The Open-Space and Environmental Districts are:

The Detached and Semi-Detached Residential Districts are:

The Rowhouse and Multi-Family Residential Districts are:

The Commercial Districts are:

The Industrial Districts are:

The Special Purpose Districts are:

(a) In general.

The zoning map, floodplain overlay maps, and flood profiles adopted under this Code are incorporated in and made a part of this Code as fully as if they were set forth and described in this Code.

(b) Evidence of authenticity.

As evidence of the authenticity of these maps and profiles, each is to be signed by the Mayor and by the President of the City Council.

(c) Digital format authorized.

(1) The Zoning Administrator may convert these maps and profiles into, and maintain and periodically update them in, a geographic database or other digital format that is capable of depicting the zoning lines and designations in both electronic and printed forms.

(2) On certification by the Director of Transportation, the maps and profiles converted to a digital format under this subsection:

(i) are legalized for purposes of the Zoning Code of Baltimore City; and

(ii) may be taken by all public officials and others as evidence of the original maps and profiles adopted under this Code.

The use on the zoning map of a letter or a letter-number combination to designate a district indicates that the regulations applying to that district extend throughout the whole area bounded by the district boundary lines, as determined by the provisions of § 6-303 {"Boundary line determination"} of this subtitle.

(a) In general.

The precise location of a zoning district boundary line is determined as specified in this section.

(b) Along streets, alleys, streams, etc.

Where a district boundary line is shown as being within or along a street, alley, other public or private way, or an extension of any of them, or as being within or along a non-navigable stream, the boundary is the center line of that street, alley, other way, extension, or stream.

(c) On lot lines.

Where a district boundary line is shown as along or superimposed on a lot line, the boundary is that lot line.

(d) Designated distances.

Where the location of a district boundary line is indicated by a designated number of feet, that distance controls.

(e) Along railroad rights-of way.

Where a district boundary line is shown as being within or along a railroad right-of-way, the boundary line of that railroad right-of-way controls.

(f) Along navigable waters.

Where a district boundary line is shown as along a navigable waterway and is not otherwise fixed, the boundary is:

(1) the line that coincides with the "pierhead line" (that is, the legal boundary beyond which artificial structures, such as piers, may not project); or

(2) where no pierhead line has been established, the line that coincides with the mean low tide line.

(g) Reclaimed submerged land.

Unless otherwise indicated on the zoning map, submerged land that is later reclaimed is in the same district as the non-submerged premises to which the reclaimed land is contiguous.

(h) Others.

Where a district boundary line is shown and its location is not fixed by any of the rules of this section, its precise location is determined by scaling from fixtures, objects, or other structures shown on the zoning map.

Where a lot is divided into 2 or more parts by a zoning district line:

(1) for all purposes except density, each part must comply with all of the regulations applicable to its zoning classification; and

(2) for density purposes, the lot area computation of each part may be totaled and then distributed throughout the lot, without regard to the zoning lines.