SOURCE: Final Rulemaking & Order No. 08-06A published at 63 DCR 2447 (March 4, 2016 – Part 2); Final Rulemaking & Order No. 19-11 published at 67 DCR 3776 (April 3, 2020); Final Rulemaking & Order No. 18-16/19-27-19-27B published at 70 DCR (August 25, 2023).

SOURCE: Final Rulemaking & Order No. 08-06A published at 63 DCR 2447 (March 4, 2016 – Part 2); Final Rulemaking & Order No. 19-14 published at 67 DCR 8068 (July 3, 2020); Final Rulemaking & Order No. 18-16/19-27-19-27B published at 70 DCR (August 25, 2023).

1. 100.1
   Subtitle E is to be read and applied in addition to the regulations included in:

   1. (a)
      Subtitle A, Authority and Applicability;
   2. (b)
      Subtitle B, Definitions, Rules of Measurement, and Use Categories;
   3. (c)
      Subtitle C, General Rules; and
   4. (d)
      Subtitle U, Use Permissions. 

1. 100.2
   Geographically modified zones are indicated by letters following the base zone name such as RF-1/DC or RF-1/CAP. 

1. 100.3
   For those geographically modified zones, the zone boundaries are described in Subtitle W, Specific Zone Boundaries, and identified on the official Zoning Map.

1. 100.4
   The RF zones shall be distinguished by a maximum number of principal dwelling units per lot of either two (2), three (3), or four (4) units.

1. 100.5
   For those zones with geographic identification, the boundaries are cited in Subtitle W and identified on the official Zoning Map. When there is a conflict between the official Zoning Map and the boundaries described in Subtitle W, the Office of Zoning shall determine the correct boundaries through a zoning certification.

1. 101.1
   The Residential Flat (RF) zones are residential zones, which provide for areas developed primarily with residential row buildings, but within which there have been limited conversions of dwellings or other buildings into more than two (2) principal dwelling units.

1. 101.2

   The RF zones are intended to:

   1. (a)
      Recognize and reinforce the importance of neighborhood character, walkable neighborhoods, housing affordability, aging in place, preservation of housing stock, improvements to the overall environment, and low- and moderate-density housing to the overall housing mix and health of the city;
   2. (b)
      Allow for limited compatible non-residential uses;
   3. (c)
      Allow for the matter-of-right development of existing lots of record;
   4. (d)
      Establish minimum lot area and lot width for the subdivision and creation of new lots of record in RF zones;
   5. (e)
      Allow for the limited conversion of single household dwellings and other structures for flats; and
   6. (f)
      Prohibit the conversion of single household dwellings and flats for apartment house as anticipated in the RA zone.

1. 101.3
   The RF zones are designed to be mapped in areas identified as low-, moderate- or medium-density residential areas suitable for residential life and supporting uses.

1. 101.4
   The purpose of the RF-1 zone is to provide for areas predominantly developed with residential row buildings on small lots within which no more than two (2) principal dwelling units are permitted.

1. 101.5
   The RF-4 and RF-5 zones are typically, but not exclusively, established residential neighborhoods adjacent or proximate to higher density zones including residential, mixed-use, and downtown areas.

1. 101.6
   The RF-4 and RF-5 zones are intended to promote the continued row house character and appearance, and residential use of larger row buildings.

1. 101.7
   The purpose of the RF-4 and RF-5 zones is to provide for areas predominantly developed with residential row buildings of three (3) or more stories within which no more than three (3) or four (4) principal dwelling units are permitted, respectively.

1. 102.1
   Use permissions for the RF zones are as specified in Subtitle U, Chapter 3.

1. 200.1
   The development standards of this chapter shall apply to all Residential Flat (RF) zones except as changed by a geographically modified zone.

1. 200.2
   The development standards regulate the bulk of buildings and other structures and the spaces around them, including the following:

   1. (a)
      Height and number of stories;
   2. (b)
      Density and lot occupancy;
   3. (c)
      Yards and setbacks; and
   4. (d)
      Environmental performance.  

1. 200.3
   A principal building on a lot in any RF zone shall be a detached building, a semi-detached building, or a row building.

1. 200.4
   The Inclusionary Zoning (IZ) requirements and the available IZ modifications to certain development standards shall apply to all RF zones, as specified in Subtitle C, Chapter 10, Inclusionary Zoning, and in the zone-specific development standards of this subtitle.

1. 201.1
   In any of the RF-1 zones, two (2) principal dwelling units shall be permitted per lot subject to Subtitle U, Use Permissions. 

1. 201.2
   Notwithstanding Subtitle E § 201.1, a building or structure in any of the RF-1 zones may be used for more than two (2) principal dwelling units pursuant to Subtitle U, Chapter 3.

1. 201.3
   In any of the RF-4 zones, three (3) principal dwelling units shall be permitted per lot subject to Subtitle U, Use Permissions.

1. 201.4
   In any of the RF-5 zones, four (4) principal dwelling units shall be permitted per lot subject to Subtitle U, Use Permissions.

1. 201.5
   No more than one (1) principal dwelling unit may be located within an accessory building, subject to Subtitle U, Use Permissions.

1. 201.6
   Accessory apartments shall not be permitted in any RF zones.

1. 201.7
   A public recreation and community center shall not exceed a gross floor area (GFA) of forty thousand square feet (40,000 sq. ft.) unless approved by the Board of Zoning Adjustment as a special exception pursuant to the provisions of Subtitle E § 212.2.

1. 201.8
   The maximum permitted floor area ratio (FAR) shall be as set forth in the following table:

2.  

   TABLE E § 201.8: MAXIMUM PERMITTED FLOOR AREA RATIO
   Zones	Type of Structure	Maximum FAR
   RF-1	Public Recreation and Community Center	1.8
   	All Other Structures	Not applicable
   RF-4 RF-5	Public Library	2.0
   	All Other Structures	1.8

1. 202.1
   Except as provided elsewhere in this title, the minimum required lot width and lot area for the creation of a new lot of record shall be as set forth in the following table:

1. 202.2
   Except as provided in Subtitle E § 202.3, the minimum dimensions of lots for Mandatory Inclusionary Developments in the RF zones shall be as set forth in the following table, which incorporates the IZ modifications authorized by Subtitle C § 1002.2:

1. 202.3
   The minimum lot width for Mandatory Inclusionary Developments may be reduced to no less than sixteen feet (16 ft.) if granted by the Board of Zoning Adjustment as a special exception pursuant to Subtitle X, Chapter 9.

1. 202.4
   The minimum lot width and lot area of Voluntary Inclusionary Developments may be reduced to not less than as set forth in the following table if granted by the Board of Zoning Adjustment as a special exception pursuant to Subtitle X, Chapter 9:

1. 203.1
   Except as provided elsewhere in this title, the maximum height of buildings or structures, not including a penthouse or rooftop structure, and the maximum number of stories shall be as set forth in this section.

1. 203.2
   The maximum permitted height of buildings or structures and number of stories, except as provided in Subtitle E §§ 203.3 through 203.8, shall be as set forth in the following table:

1. 203.3
   In any of the RF-1 zones, new construction of three (3) or more immediately adjoining residential row buildings, built concurrently on separate record lots, may be erected to a height not exceeding forty feet (40 ft.) and three (3) stories.

1. 203.4
   In any of the RF-1 zones, a building or other structure may be erected to a height not exceeding forty feet (40 ft.), not including a penthouse or rooftop structure, if approved by the Board of Zoning Adjustment as a special exception pursuant to Subtitle X, Chapter 9, subject to Subtitle E § 5202.

1. 203.5
   A place of worship may be erected to a height not exceeding sixty feet (60 ft.) and three (3) stories, not including a penthouse or rooftop structure.

1. 203.6
   A public recreation and community center may be erected to a height not exceeding forty-five feet (45 ft.) with no limit on number of stories, not including a penthouse or rooftop structure.

1. 203.7
   A building or other structure may be erected to a height not exceeding ninety feet (90 ft.) with no limit on number of stories, not including a penthouse or rooftop structure; provided that the building or structure shall be removed from all lot lines of its lot for a distance equal to the height of the building or structure above the adjacent natural or finished grade, whichever is the lower in elevation.

1. 203.8
   An institutional building or structure may be erected to a height not exceeding ninety feet (90 ft.) with no limit on number of stories, not including a penthouse or rooftop structure; provided, that the building or structure shall be removed from all lot lines of its lot a distance of not less than one foot (1 ft.) for each one foot (1 ft.) of height in excess of that authorized in the zone in which it is located.

1. 204.1
   Except for properties subject to review by the Historic Preservation Review Board or their designee, or the U.S. Commission of Fine Arts, a roof top architectural element original to a principal building such as cornices, porch roofs, a turret, tower, or dormers, shall not be removed or significantly altered, including shifting its location, changing its shape, or increasing its height, elevation, or size; provided that:

   1. (a)
      For interior lots, not including through lots, the roof top architectural elements shall not include identified roof top architectural elements facing the structure’s rear lot line; and
   2. (b)
      For all other lots, the roof top architectural elements shall include identified roof top architectural elements on all sides of the structure.  

1. 204.2
   For the purposes of Subtitle E § 204.1, ordinary repairs to a roof top architectural element shall be permitted. Ordinary repairs may include the replacement of an original roof top architectural element when the Zoning Administrator has determined, based on photographs provided by the owner and other evidence acceptable to the Zoning Administrator, that:

   1. (a)
      The original roof top architectural element is substantially eroded or damaged due to no overt actions of the owner or affiliates, and
   2. (b)
      The replacement will be visually indistinguishable from the original in style, dimensions, profile, and appearance when viewed from a public right of way.  

1. 204.3
   Any new building, or alteration or addition to an existing building, including a penthouse or rooftop structure (the “proposed construction”) at the time of application, shall not significantly interfere with the operation of a solar energy system on an abutting property, unless agreed to by the owner of the solar energy system, subject to the following:

   1. (a)
      “Time of application” shall mean the earlier of either:

      1. (1)
         The Department of Buildings officially accepts as complete the application for the building permit for the proposed construction; or
      2. (2)
         The Office of Zoning officially accepts as complete an application for zoning relief for the proposed construction;
   2. (b)
      “Solar energy system” shall mean a solar energy system of at least 2kW in size that, at the time of application, is either:

      1. (1)
         Legally permitted, installed, and operating; or
      2. (2)
         Authorized by an issued permit; provided that the permitted solar energy system is operative within six (6) months after the issuance of the solar energy system permit, not including grid interconnection delays caused solely by a utility company connecting to the solar energy system;
   3. (c)
      “Significantly interfere” shall mean that the proposed construction increases the shading incident on the solar energy system by more than five percent (5%), as determined by a comparative solar shading study acceptable to the Zoning Administrator; and
   4. (d)
      All applications for the proposed construction, whether for a building permit or for zoning relief, must include one of the following:

      1. (1)
         An affidavit by the applicant stating that there is no solar energy system on an abutting property;
      2. (2)
         A comparative solar shading study that meets the minimum standard established by the Zoning Administrator for the purpose of determining the increased annual incident solar shading by percent; or
      3. (3)
         A written agreement executed by the owner of the impacted solar energy system accepting the interference with the solar energy system. 

1. 204.4
   The Board of Zoning Adjustment may grant relief from the requirements of Subtitle E § 204.1 as a special exception pursuant to Subtitle X, Chapter 9, and subject to the following conditions:

   1. (a)
      The proposed construction shall not have a substantially adverse effect on the use or enjoyment of any abutting or adjacent dwelling or property, in particular:

      1. (1)
         The light and air available to neighboring properties shall not be unduly affected;
      2. (2)
         The privacy of use and enjoyment of neighboring properties shall not be unduly compromised; and
      3. (3)
         The proposed construction, as viewed from the street, alley, and other public way, shall not substantially visually intrude upon the character, scale, and pattern of houses along the street or alley frontage;
   2. (b)
      In demonstrating compliance with paragraph (a), the applicant shall use graphical representations such as plans, photographs, or elevation and section drawings sufficient to represent the relationship of the proposed construction to adjacent buildings and views from public ways; and
   3. (c)
      The Board of Zoning Adjustment may require special treatment in the way of design, screening, exterior or interior lighting, building materials, or other features for the protection of adjacent or nearby properties, or to maintain the general character of a block. 

1. 204.5
   The Board of Zoning Adjustment may grant relief from the requirements of Subtitle E § 204.3 as a special exception pursuant to Subtitle X, Chapter 9, and subject to the following conditions:

   1. (a)
      The application demonstrates the applicant has made its best efforts to minimize and mitigate the potential shading impact to solar energy systems on abutting properties to the extent reasonably practical, including possible design alternatives to the application’s proposed construction and potential solar access easements;
   2. (b)
      The application shall include illustrations of the shading impact on solar energy systems on abutting properties:

      1. (1)
         As proposed by the application;
      2. (2)
         As allowed as a matter of right; and
      3. (3)
         Of possible design alternatives considered by the applicant; and
   3. (c)
      The Board may require special treatment and impose reasonable conditions as it deems necessary to mitigate shading impacts identified in the consideration of the application.

1. 205.1
   A penthouse or rooftop structure on a single household dwelling or flat shall be permitted only in accordance with Subtitle C § 1501.

1. 205.2
   A mechanical penthouse or rooftop structure with a maximum height of eighteen feet, six inches (18 ft. 6 in.) shall be permitted on a building constructed pursuant to Subtitle E §§ 203.5 through 203.8.

1. 205.3
   For all other buildings and uses, the maximum permitted height of a penthouse or rooftop structure shall be twelve feet (12 ft.) and one (1) story.

1. 206.1
   Except as provided elsewhere in this title, the front setback requirements shall be as set forth in this section.

1. 206.2

   For all residential buildings, a front setback shall be provided within the range of existing front setbacks of all residential buildings on the same side of the street in the block where the building is proposed.

1. 207.1
   Except as provided elsewhere in this title, the minimum required rear yard shall be as set forth in the following table:

1. 207.2
   In the case of a lot proposed to be used by a public recreation and community center or public library where a rear lot line abuts or adjoins a public open space, recreation area, or reservation, no rear yard shall be required.

1. 207.3
   In the case of a building existing on or before May 12, 1958, an extension or addition may be made to the building into the required rear yard; provided, that the extension or addition shall be limited to that portion of the rear yard included in the building area on May 12, 1958.

1. 207.4
   Notwithstanding Subtitle E §§ 207.1 through 207.3, a rear wall of a row or semi-detached building shall not be constructed to extend farther than ten feet (10 ft.) beyond the farthest rear wall of any adjoining principal residential building on any adjacent property.

1. 207.5
   A rear wall of a row or semi-detached building may be constructed to extend farther than ten feet (10 ft.) beyond the farthest rear wall of any adjoining principal residential building on any adjacent property if approved by the Board of Zoning Adjustment as a special exception pursuant to Subtitle X, Chapter 9 and subject to Subtitle E § 5201 if applicable.

1. 208.1
   Except as provided elsewhere in this title, the minimum side yard shall be as set forth in this section.

1. 208.2
   Two (2) side yards shall be provided for detached buildings; one (1) side yard shall be provided for semi-detached buildings; and no side yards are required for row buildings.

1. 208.3
   Any side yard provided shall be a minimum of five feet (5 ft.).

1. 208.4
   Existing conforming side yards shall not be reduced to a nonconforming width or eliminated.

1. 208.5
   In the case of a building with a nonconforming side yard, an extension or addition may be made to the building; provided, that the width of the existing side yard shall not be reduced or eliminated; and provided further, that the width of the side yard adjacent to the extension or addition shall be a minimum of three feet (3 ft.).

1. 208.6
   In the case of a lot proposed to be used by a public library or public recreation and community center where a side lot line abuts or adjoins a public open space, recreation area, or reservation, no side yard shall be required.

SOURCE: Final Rulemaking & Order No. 18-16/19-27-19-27B published at 70 DCR (August 25, 2023)

1. 209.1
   Courts are not required; however, where a court is provided, the court shall have the following minimum dimensions:

SOURCE:  Final Rulemaking & Order No. 18-16/19-27-19-27B published at 70 DCR (August 25, 2023)

1. 210.1
   Except as provided elsewhere in this title in Subtitle E § 212.2, the maximum permitted lot occupancy shall be as set forth in the following table:

SOURCE: Final Rulemaking & Order No. 18-16/19-27-19-27B published at 70 DCR (August 25, 2023).

1. 211.1
   Except as provided elsewhere in this title, the minimum required percentage of pervious surface of a lot shall be as set forth in the following table:

SOURCE: Final Rulemaking & Order No. 18-16/19-27-19-27B published at 70 DCR (August 25, 2023).​​​​​​​

1. 212.1
   Relief from the development standards of this subtitle may be permitted for public libraries if approved by the Board of Zoning Adjustment as a special exception pursuant to Subtitle X, Chapter 9.

1. 212.2
   Relief from the development standards of this subtitle may be permitted for public recreation and community centers if approved by the Board of Zoning Adjustment as a special exception pursuant to Subtitle X, Chapter 9, subject to the following conditions:

   1. (a)
      Relief from the gross floor area limitation of Subtitle E § 201.7 shall be limited to a maximum of 1.8 FAR; and
   2. (b)
      Relief from the lot occupancy limitations of Subtitle E § 201.2 is limited to a maximum 40% lot occupancy provided the applicant demonstrates to the Board’s satisfaction that the proposed increase is consistent with the Department of Parks and Recreation’s policy of preserving open space.

SOURCE: There are no ordinances associated with this section..

1. 300.1
   The base zone development standards in Subtitle E, Chapter 2 shall apply to the RF-1/DC zone except as specifically modified by this chapter. In the event of a conflict between the provisions of this chapter and other regulations of this title, the provisions of this chapter shall control.

1. 300.2
   In addition to the purposes of the RF-1 zone, the purposes of the Dupont Circle Residential Flat (RF-1/DC) zone are to:

   1. (a)
      Recognize that Dupont Circle area is a unique resource in the District of Columbia that must be preserved and enhanced;
   2. (b)
      Provide strong protections to retain its low scale, predominantly residential character, independent small retail businesses, human scale streetscapes, and historic character;
   3. (c)
      Enhance the residential character of the area by maintaining existing residential uses and controlling the scale and density of residential development;
   4. (d)
      Protect the integrity of “contributing buildings”, as that term is defined by the Historic Landmark and Historic District Protection Act of 1978, effective March 3, 1979 (D.C. Law 2-144, as amended; D.C. Official Code §§ 6-1101 to 6-1115 (formerly codified at D.C. Official Code §§ 5- 1001 to 5-1015 (1994 Repl. & 1999 Supp.))).
   5. (e)
       Preserve areas planned as open gardens and backyards and protect the light, air, and privacy that they provide;
   6. (f)
        Enhance the streetscape by maintaining the public space in front of buildings as landscaped green spaces; and
   7. (g)
      Encourage greater use of public transportation and the free circulation of vehicles through public streets and alleys.

1. 300.3
   The RF-1/DC zone requires a scale of development consistent with the nature and character of the Dupont Circle area in height and bulk and ensures a general compatibility in the scale of new buildings with older, low-scale buildings.

1. 301.1
   In the RF-1/DC zone, the matter-of-right limits on building height, floor area ratio, and penthouse and rooftop structure height of Subtitle E, Chapter 2 shall serve as the maximum permitted building height, floor area ratio, and penthouse and roof structure height for a planned unit development.

1. 302.1
   No garage or associated driveway providing access to required parking spaces or loading berths shall be permitted along Connecticut Avenue from N Street, N.W. to Florida Avenue, N.W.

1. 400.1
   The base zone development standards in Subtitle E, Chapter 2 shall apply to the RF-1/CAP zone except as specifically modified by this chapter. In the event of a conflict between the provisions of this chapter and other regulations of this title, the provisions of this chapter shall control.

1. 400.2
   In addition to the purposes of the RF-1 zone, the purposes of the Capitol Interest Residential Flat (RF-1/CAP) zone are to:

   1. (a)
      Promote and protect the public health, safety, and general welfare of the U.S. Capitol precinct and the area adjacent to this jurisdiction, in a manner consistent with the goals and mandates of the United States Congress in Title V of the Legislative Branch Appropriation Act, 1976 (Master Plan for Future Development of the Capitol Grounds and Related Areas), approved July 25, 1975 (Pub. L. No. 94-59, 89 Stat. 288), and in accordance with the plan submitted to the Congress pursuant to the Act;
   2. (b)
      Reflect the importance of and provide sufficient controls for the area adjacent to the U.S. Capitol;
   3. (c)
      Provide particular controls for properties adjacent to the U.S. Capitol precinct and the area adjacent to this jurisdiction, having a well-recognized general public interest; and
   4. (d)
      Restrict some of the permitted uses to reduce the possibility of harming the U.S. Capitol precinct and the area adjacent to this jurisdiction.

1. 401.1
   In the RF-1/CAP zone, a place of worship may be erected to a height not exceeding forty feet (40 ft.) and three (3) stories, not including a penthouse or rooftop structure.

1. 401.2
   In the RF-1/CAP zone, a public recreation and community center may be erected to a height not exceeding forty feet (40 ft.) with no limit on number of stories, not including a penthouse or rooftop structure.

1. 401.3
   In the RF-1/CAP zone, the provisions of Subtitle E §§ 203.7 and 203.8 shall not apply.

1. 402.1
   In the RF-1/CAP zone, the maximum permitted height of a penthouse or rooftop structure, excluding those permitted on the roof of a single household dwelling or flat pursuant to Subtitle C § 1501, shall be ten feet (10 ft.) and one (1) story.

1. 403.1
   In reviewing an application for a special exception in the RF-1/CAP zone, in addition to the applicable criteria of this subtitle and of Subtitle X, Chapter 9, the Board of Zoning Adjustment shall consider whether the proposed development is:

   1. (a)
      Compatible with the present and proposed development of the neighborhood;
   2. (b)
      Consistent with the goals and mandates of the United States Congress in title V of the Legislative Branch Appropriation Act, 1976 (Master Plan for Future Development of the Capitol Grounds and Related Areas), approved July 25, 1975 (Pub. L. No. 94-59, 89 Stat. 288); and
   3. (c)
      In accordance with the plan promulgated under the Act.

1. 403.2
   Upon receipt of the application, the Board of Zoning Adjustment shall refer the application to:

   1. (a)
      The Architect of the Capitol for review and report; and
   2. (b)
      The Office of Planning for review, report, and impact assessment along with coordination of reviews in writing of all relevant District departments and agencies including:

      1. (1)
         The District Department of Transportation;
      2. (2)
         The Department of Housing and Community Development; and
      3. (3)
         The Historic Preservation Office if the application involves a historic district or historic landmark. 

1. 403.3
   The Board may require special treatment and impose reasonable conditions as it deems necessary to mitigate any adverse impacts identified in the consideration of the application.

1. 4900.1
   The provisions of this chapter govern the height and bulk of public school buildings.

1. 4901.1
   The specific standards of this chapter shall govern public schools; in the absence of specific standards, the development standards for the zone in which the building or structure is proposed shall apply.

1. 4902.1
   ​​​​​​Public schools shall be permitted a maximum floor area ratio of 1.8 in the RF zones.

1. 4903.1
   Unless otherwise permitted or required, use of an existing or creation of a new lot for public schools shall be subject to the following minimum lot dimensions as set forth in the following table:

1. 4903.2
   Minimum lot area may include adjacent parcels under the same ownership that are separated only by a public alley.

1. 4903.3
   On split-zoned lots, the minimum lot width and minimum lot area requirements, if any, of the less restrictive zone shall apply to the entire lot as long as the lot was in existence as of February 13, 2006.

1. 4903.4
   On a lot with more than one (1) street front, the minimum lot width may include the measurement of all street frontages, provided the lot width can be measured without interruption by another lot.

1. 4904.1
   Public schools shall be permitted a maximum building height, not including a penthouse or rooftop structure, as set forth in the following table:

1. 4905.1
   Penthouses or rooftop structures shall be subject to the regulations of Subtitle C, Chapter 15, and to the height and story limitations specified in each zone of this subtitle; provided that public schools shall be permitted a mechanical penthouses to a maximum height of eighteen feet, six inches (18 ft., 6 in.) or the permitted mechanical penthouse height in the zone, whichever is greater. 

1. 4906.1
   A front setback is not required for a public school.

1. 4907.1
   A rear yard with a minimum depth of twenty feet (20 ft.) shall be provided for each public school.

1. 4907.2
   In the case of a lot that abuts or adjoins along the rear lot line a public open space, recreation area, or reservation, no rear yard shall be required.

1. 4908.1
   In the RF zones, a side yard shall not be required. However, except as provided in Subtitle E §§ 4908.2 and 4908.3, if the yard is provided, it shall be not less than five feet (5 ft.) wide.

1. 4908.2
   In the case of a lot that abuts or adjoins a public open space, recreation area, or reservation on one (1) or more side lot line, a required side yard may be reduced or omitted.

1. 4908.3
   A side yard may be reduced or omitted along a side street abutting a corner lot in an RF zone.

1. 4909.1
   Where a court is provided, it shall have the following minimum dimensions:

1. 4910.1
   Public schools shall not occupy a lot in excess of the maximum lot occupancy as set forth in the following table:

1. 4910.2
   A public school may occupy the lot upon which it is located in excess of the permitted percentage of lot occupancy prescribed in this section subject to all of the following conditions:

   1. (a)
      The portion of the building, excluding closed court, exceeding the lot coverage shall not exceed twenty feet (20 ft.) in height or two (2) stories; and
   2. (b)
      The total lot occupancy shall not exceed seventy percent (70%).

1. 4911.1
   The minimum percentage of pervious surface of a lot shall be fifty percent (50%).

1. 4912.1
   Exceptions to the development standards of this chapter for public schools shall be permitted as a special exception if approved by the Board of Zoning Adjustment under Subtitle X, Chapter 9.

1. 5000.1
   Accessory buildings shall be permitted within an RF zone subject to the conditions of this chapter.

1. 5000.2
   An accessory building shall:

   1. (a)
      Be subordinate to and located on the same lot as the building to which it is accessory; provided, that an accessory building may contain a parking space accessory to, and required for, a use on another lot, where specifically permitted under other provisions of this title;
   2. (b)
      Be used for purposes that are incidental to the use of the principal building; provided that no more than one (1) principal dwelling unit shall be allowed;
   3. (c)
      Be secondary in size compared to the principal building;
   4. (d)
      Be constructed after the construction of the principal building; and
   5. (e)
      Not be constructed in front of the principal building.

1. 5000.3
   An accessory building shall be included in the calculation of lot occupancy, pervious surface, and as applicable, the floor area ratio (FAR) of the RF zones, and shall comply with all required yards for accessory buildings in the zone.

1. 5000.4
   A private garage permitted in an RF zone as a principal use on a lot other than an alley lot, shall open directly onto an alley, and shall not be located within fifty feet (50 ft.) of the front building line or within seven and one-half feet (7.5 ft.) of the centerline of the alley upon which it opens.

1. 5001.1
   The development standards in Subtitle E, Chapter 2, shall apply to accessory buildings in the RF zones except as specifically modified by this chapter. In the event of a conflict between the provisions of this chapter and other regulations of this title, the provisions of this chapter shall control.

1. 5001.2
   The bulk of accessory buildings in the RF zones shall be controlled through the development standards in Subtitle E §§ 5002 through 5006. 

1. 5002.1
   The maximum height of an accessory building in an RF zone shall be twenty-two feet (22 ft.) and two (2) stories. 

1. 5003.1
   The maximum building area for an accessory building in an RF zone shall be an area equal to the greater of thirty percent (thirty percent (30%)) of the required rear yard or four-hundred and fifty square feet (450 sq. ft.).

1. 5004.1
   An accessory building other than a shed may be located within a rear yard in an RF zone provided that the accessory building is:

   1. (a)
      Set back at least seven and one-half feet (7.5 ft.) from the centerline of any alley; and
   2. (b)
      Not occupying, in combination with all accessory buildings on a lot, more than thirty percent (thirty percent (30%)) of the area of a required rear yard..

1. 5004.2

   A shed may be located within a required rear yard of a principal building.

1. 5005.1
   An accessory building other than a shed may be located within a side yard in an RF zone provided that the accessory building is set back at least seven and one-half feet (7.5 ft.) from the centerline of any alley.

1. 5005.2
   A shed may be located within a required side yard of a principal building.

1. 5006.1
   The development standards that permit the following uses are located in Subtitle U, Chapter 3:

   1. (a)
      A permitted principal dwelling unit in an RF zone within an accessory building; and
   2. (b)
      A private vehicle garage that is an accessory building in an RF zone.

1. 5100.1
   The following development standards shall apply to buildings on Alley Record Lots in the RF zones:

1. 5100.2
   Uses on Alley Lots shall be as permitted in Subtitle U, Chapter 6.

1. 5200.1
   The provisions of this chapter provide for special exception relief from the specified development standards and regulations, subject to the provisions of each section and the general special exception criteria at Subtitle X, Chapter 9.

1. 5200.2
   Requested relief that does not comply with specific conditions or limitations of a special exception authorized by this chapter shall be processed as a variance pursuant to Subtitle X, Chapter 10.

1. 5201.1
   For an addition to a principal residential building on a non-alley lot or for a new principal residential building on a substandard non-alley record lot as described by Subtitle C § 301.1, the Board of Zoning Adjustment may grant relief from the following development standards of this subtitle as a special exception, subject to the provisions of this section and the general special exception criteria at Subtitle X, Chapter 9:

   1. (a)
      Lot occupancy up to a maximum of seventy percent (70%) for all new and existing structures on the lot;
   2. (b)
      Yards, including alley centerline setback;
   3. (c)
      Courts; and
   4. (d)
      Pervious surface.

1. 5201.2
   For a new or enlarged accessory structure to a residential building on a non-alley lot, the Board of Zoning Adjustment may grant relief from the following development standards as a special exception, subject to the provisions of this section and the general special exception criteria at Subtitle X, Chapter 9:

   1. (a)
      Lot occupancy under Subtitle E § 5003 up to a maximum of seventy percent (70%) for all new and existing structures on the lot;
   2. (b)
      Yards, including alley centerline setback;
   3. (c)
      Courts; and
   4. (d)
      Pervious surface.

1. 5201.3
   For a new or enlarged building on an Alley Record Lot, the Board of Zoning Adjustment may grant relief from the following development standards as a special exception, subject to the provisions of this section and the general special exception criteria at Subtitle X, Chapter 9:

   1. (a)
      Yards, including alley centerline setback; and
   2. (b)
      Pervious surface.

1. 5201.4
   An application for special exception relief under this section shall demonstrate that the proposed addition, new building, or accessory structure shall not have a substantially adverse effect on the use or enjoyment of any abutting or adjacent dwelling or property, specifically:

   1. (a)
      The light and air available to neighboring properties shall not be unduly affected;
   2. (b)
      The privacy of use and enjoyment of neighboring properties shall not be unduly compromised;
   3. (c)
      The proposed addition or accessory structure, together with the original building, or the proposed new building, as viewed from the street, alley, and other public way, shall not substantially visually intrude upon the character, scale, and pattern of houses along the street and alley frontage; and
   4. (d)
      In demonstrating compliance with paragraphs (a), (b) and (c) of this subsection, the applicant shall use graphical representations such as plans, photographs, or elevation and section drawings sufficient to represent the relationship of the proposed addition, new building, or accessory structure to adjacent buildings and views from public ways.

1. 5201.5
   The Board of Zoning Adjustment may require special treatment in the way of design, screening, exterior or interior lighting, building materials, or other features for the protection of adjacent and nearby properties.

1. 5201.6
   This section shall not be used to permit the introduction or expansion of a nonconforming use, lot occupancy beyond what is authorized in this section, height, or number of stories, as a special exception.  

1. 5201.7
   Where an application requests relief from the alley centerline setback requirements under this section, the Office of Zoning shall refer the application to the following agencies for their review and recommendations, to be filed in the case record within the forty- (40) day period established by Subtitle A § 211:

   1. (a)
      District Department of Transportation (DDOT); 
2.  
   1. (a)
      Department of Public Works (DPW);
   2. (b)
      Metropolitan Police Department (MPD);
   3. (c)
      Fire and Emergency Medical Services Department (FEMS);
   4. (d)
      DC Water (WASA); and
   5. (e)
      If a historic district or historic landmark is involved, the Historic Preservation Office (HPO).

1. 5202.1
   The Board of Zoning Adjustment may grant as a special exception under Subtitle X, Chapter 9, and subject to the conditions of this subsection, a maximum building height of up to forty feet (40 ft.) for a principal residential building and any additions thereto located on a non-alley lot subject to the following conditions:

   1. (a)
      The proposed construction shall not have a substantially adverse effect on the use or enjoyment of any abutting or adjacent dwelling or property, in particular:
   2. (b)
      In demonstrating compliance with paragraph (a), the applicant shall use graphical representations such as plans, photographs, or elevation and section drawings sufficient to represent the relationship of the proposed construction’s height to adjacent buildings and views from public ways; and

      1. (1)
         The light and air available to neighboring properties shall not be unduly affected; The privacy of use and enjoyment of neighboring properties shall not be unduly compromised; and
      2. (2)
         The proposed construction, as viewed from the street, alley, and other public way, shall not substantially visually intrude upon the character, scale and pattern of houses along the subject street or alley;            
   3. (c)
      The Board of Zoning Adjustment may require special treatment in the way of design, screening, exterior or interior lighting, building materials, or other features for the protection of adjacent or nearby properties, or to maintain the general character of a block.

1. 5202.2
   The Board of Zoning Adjustment may modify or waive not more than two (2) of the requirements specified in Subtitle E §§ 5203.1(a) through (f) provided, that any modification or waiver granted pursuant to this section shall not be in conflict with Subtitle E § 5203.1(e).

1. 5202.3
   A special exception to the requirements of Subtitle E § 206 shall be subject to the conditions of Subtitle E § 5203.1(b), (c), and (d). If relief is granted from compliance with Subtitle E § 206.1(b) or (c), the special exception shall not be conditioned upon compliance with that same requirement as stated in Subtitle E § 5203.1(b)(3) and (4)..

1. 5202.4
   The Board of Zoning Adjustment may require special treatment in the way of design, screening, exterior or interior lighting, building materials, or other features for the protection of adjacent or nearby properties, or to maintain the general character of a block.