EFFECTIVE MAY 30, 2022 105 chapter 5 • Consider adding porches or balconies only if placed out of the public viewshed and subordinate in footprint, size, mass, and scale to the main form of the accessory structure, as porches and balconies were not common to historic accessory structures. • Design the foundation on an addition to be compatible with height and materials of the foundation on the historic accessory structure. Follow the guidelines for foundations on new accessory structures. • Avoid the use of chimneys on accessory structures. Freestanding outdoor chimneys may be appropriate if sited so that they are not readily visible from the street.
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