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. 

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

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. (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. (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. (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. (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.

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. (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.

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. (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. (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. (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. (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. (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. (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..

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

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

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. (a)
   District Department of Transportation (DDOT); 

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. (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.