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SEC. 10. ADDITIONS.

Additions to existing buildings and new infill construction proposed within the Dogpatch Historic District must reflect an understanding of the relationship of the proposal with the contributing buildings within the district. Additions shall be reviewed for compatibility with the historic building and the district while infill constriction shall be reviewed for compatibility with the overall district. Neither should directly imitate nor replicate existing features. For additions, every effort should be made to minimize the visibility of the new structure within the district. Infill construction should reflect the character of the district, including the prevailing heights of contributing buildings without creating a false sense of history. Property owners should consult early in the process with a Planning Department Historic Preservation Technical Specialist when developing a proposal. Additions will be reviewed on a case-by-case basis and any proposed addition should be located in an inconspicuous location and not result in a radical change to the form or character of the historic building. A vertical addition may be approved, depending on how the addition impacts the building and its relative visibility from the surrounding public rights-of-way within the district. The Planning Department evaluates all proposals for properties identified under Article 10 of the Planning Code for compliance with the Secretary of the Interior's Standards (36 C.F.R. § 67.7 (2001)). Based on these Standards, Department staff uses the following criteria when reviewing proposals for vertical additions: • The structure respects the general size, shape, and scale of the features associated with the property and the district and the structure is connected to the property in a manner that does not alter, change, obscure, damage, or destroy any of the character-defining features of the property and the district. • The design respects the general historic and architectural characteristics associated with the property and the district without replicating historic styles or elements that will result in creating a false sense of history. • The materials are compatible with the property or district in general character, color and texture. As part of the Planning Department review process, the project sponsor shall conduct and submit an analysis that illustrates the relative visibility of a proposed vertical addition from within the district. As part of this analysis, sightline cross-sections and perspective drawings illustrating the proportionality and scale, as well as the visible extent of the addition from prescribed locations should be submitted. When a district provides an opportunity for new construction through existing vacant parcels or by replacing non-contributing buildings, a sensitive design is of critical importance. Historic buildings within the district should be utilized and referenced for design context. Contemporary design that respects the District's existing character-defining features without replicating historic designs is encouraged. The Department uses the following criteria when reviewing proposals for infill construction: • The structure respects the general size, shape, and scale of the character-defining features associated with the district and its relationship to the character-defining features of the immediate neighbors and the district. • The site plan respects the general site characteristics associated with the district. • The design respects the general character-defining features associated with the district • The materials are compatible with the district in general character, color, and texture. • The only instance where a replication of an original design may be appropriate is the replacement of a missing structure in a row of identical houses. (Added by Ord. 298-08, File No. 081153, App. 12/19/2008)

APPENDIX M TO ARTICLE 10 - MARKET STREET MASONRY HISTORIC DISTRICT SEC. 1. FINDINGS AND PURPOSES. The Board of Supervisors hereby finds that the area known and described in this ordinance as the Market Street Masonry Historic District contains a number of structures having a special character and special historical, architectural and aesthetic interest and value, and constitutes a distinct section of the City. The Board of Supervisors further finds that designation of said area as a Historic District will be in furtherance of and in conformance with the purposes of Article 10 of the Planning Code and the standards set forth therein, and that preservation on an area basis rather than on the basis of individual structures alone is in order. This ordinance is intended to further the general purpose of historic preservation legislation as set forth in Section 1001 of the Planning Code, to promote the health, safety and general welfare of the public. (Added by Ord. 64-13, File No. 121004, App. 4/17/2013, Eff. 5/17/2013)