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SEC. 6. FEATURES. (a) Residential - Features of Existing Buildings. 1. Overall Form and Continuity.Building height is generally within a three-story range, with a substantial number of structures built at one or two stories in height. The majority of structures have been either elevated or altered to allow for the construction of a garage level at grade. However, despite these and other alterations, the majority of residences in the district retain their historic integrity. Residential buildings are generally set back an average of 10 feet from the public right-of-way. 2. Scale and Proportion.The buildings vary in height, bulk, scale and proportion. The width of lots in Dogpatch range from single lots of 20 feet to 40 feet for larger lots. Early homes in Dogpatch constructed circa 1870 were designed in a vernacular style with Greek Revival influences. Later homes continued in the Greek Revival form, but were joined by homes designed in the Queen Anne, Italianate and Classical Revival styles, as well as the Eastlake-styled Pelton Cottages. Multi-story residences are large in bulk, often as great as 3,500 square feet. Smaller cottage-size structures, typically 800 square feet, are well scaled to the smaller lots. 3. Fenestration.Existing fenestration consists of predominantly double-hung, wood sash windows that are vertical in orientation. Residential buildings feature a fairly symmetrical and regular pattern of windows with consistent dimensions along primary facades. Generally, the size and shape of window openings have not been altered over time. 4. Materials.Horizontal rustic wood siding is the traditional cladding material found in the district. However, fishscale wood shingles and asbestos siding are also found throughout the district. 5. Design Features.Recessed porches and entry porticos are characteristic design features of the district. 6. Architectural Detail.Architectural detail found in the district usually follows transitional elements associated with the Greek Revival, Eastlake, Queen Anne, Italianate and Classical Revival architectural styles. (b) Industrial/Commercial - Features of Existing Buildings. 1. Overall Form and Continuity.Building height is generally within a four-story range and many of the industrial/commercial structures are one or two stories in height. Typically, these buildings are constructed closer to the property line than the residential structures found in the district. 2. Scale and Proportion.The buildings are of typical warehouse design, large in bulk, often with large, ground level openings originally designed for rail or vehicular access. Industrial/commercial structures are found throughout the district, often surrounded by residential buildings. While gaps may exists, because of height, bulk and setback, there is regularity to the overall form of industrial/commercial buildings. A small cluster of brick and stucco public buildings (police, fire, and hospital) are easily recognizable from other industrial/commercial structures found in the district. These resources, while offering a different scale and proportion, are compatible with the plain reinforced concrete and brick-faced structures characteristic of 20th century industrial architecture. 3. Fenestration.For the most part, the district's industrial/commercial buildings lack strong fenestration patterns, which typically are not supportive of a warehouse function. Windows exist near entrances and in some cases, offer small storefronts to display products. Early 20th century warehouse buildings were often constructed with office spaces above warehouse functions. In this case, double-hung, residential-type windows can be found. Larger industrial, metal sash windows are prevalent on commercial buildings built after 1920. Door openings are often massive to facilitate easy access of bulk materials. 4. Materials.Standard brick masonry is found on the older industrial/commercial buildings in the district; reinforced concrete was introduced as a cladding material following the earthquake and fire of 1906. Concrete block and stucco are also found on some 20th century, industrial/commercial buildings. 5. Color.Red brick is typical, with some yellow and painted brick. Muted earth tones of red, brown, green, gray, and blue are found on reinforced concrete, concrete block, and stucco- faced buildings. 6. Texture.Typical facing materials give both a rough textured or smooth appearance, depending on the cladding material. 7. Architectural Detail.Industrial and commercial buildings typically lack ornamentation. Warehouses by their very nature are utilitarian; warehouses constructed towards the end of the Dogpatch Historic District period of significance (1943) have even less ornamentation than older counterparts. Cornices are simple and may be abstract versions of more elaborate cornices found on larger, commercial structures in San Francisco's Financial District. Where detail occurs, it is often found surrounding entryways to industrial/commercial buildings. (Added by Ord. 66-03, File No. 020972, App. 4/18/2003) SEC. 7. STANDARDS FOR REVIEW OF APPLICATIONS. Any exterior change within the Dogpatch Historic District shall require a Certificate of Appropriateness, pursuant to the provisions of Article 10, when such work requires a City permit. The procedures, requirements, controls and standards of Article 10 of the Planning Code shall apply to all applications for Certificates of Appropriateness in the Dogpatch Historic District. In addition, the following specific standards for review shall apply to all applications for Certificates of Appropriateness. In the event of any conflict or inconsistency between the provisions set forth below and Article 10, those procedures, requirements, controls and standards affording stricter protection to the Historic District shall prevail. (a) Character of the Historic District. The general standards for review of all applications for Certificates of Appropriateness are as set