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C Design Standards for ROOFLINES AND ROOF DETAILS III-C-15. The original roof pitch and the ridge height should be retained. The construction of any new dormers or skylights should not be visible from any public road and should be on the least visible sections of the roof from within the property boundary. III-C-16. All chimneys should be preserved and repaired using the same material,patterns,and methods as the original construction. New chimneys should not visually compete with original chimneys. C Design Standards for OTHER IMPORTANT VISUAL FEATURES S III-C-17. All character-defining elements and exterior features should be preserved. III-C-18. Elements that cannot be repaired should be replaced in kind. S III-C-19. Additions,and new construction,should never dominate existing buildings. Details(roofline,door,and window trim)and other visually important molding on additions and new freestanding buildings should be visually compatible with details on existing buildings. New trim should maintain the proportions of the original trim in a simplified version; it should never overpower the original trim. Moreover, new trim should never predate an existing structure unless it is part of a researched restoration or reproduction project. D Design Standards for REVERSIBILITY S III-D-1. Large additions should be constructed as stand-alone units placed alongside existing buildings, not integrated into the structure. Additions should be constructed so that they can be removed in the future should circumstances change. III-D-2. Care should be used when locating new or moved buildings to a Local Landmark property. New detached construction and relocated older buildings should be able to be removed from the site without altering the overall character of the property. New or moved buildings should not diminish the historic integrity of the Local Landmark property by their location on the site. (See Standards for Introducing Buildings to a Landmark Property.) E Design Standards for UNTILITIES AND ENERGY RETROFIT III-E-1. Retain and preserve traditional or inherent energy-conserving features of the historic buildings such as porches, screen doors,etc. III-E-2. Install narrow profile exterior or interior storm windows so that they do not damage or obscure existing sash and window frames for energy efficiency. Choose storm windows that are painted or finished with a color compatible with the existing sash color. If covering double-hung windows,select operable storm windows with dividers that align with existing sash division. III-E-3. Install full-light storm doors,constructed of wood or aluminum painted or finished with a color that is compatible with the color of the existing door for energy efficiency. Install storm doors so that the original doors and frames are not obscured or damaged. III-E-4. Install mechanical systems with care so alterations to the contributing historic building are minimized and its character-defining elevations and features are not compromised. III-E-5. Locate new transformers,meters, pipes,and mechanical or communication-related equipment as inconspicuously as possible, usually in rear yard locations or along non-character-defining elevations. Screen mechanical or communication equipment with landscaping or opaque fencing. Do not locate new mechanical or communication-related equipment(satellite dishes,solar panels,etc.)on roofs or elevations visible from the road,or visible on the approach to the front door. Inspect and repair roof surfaces before installing solar panels. Consider installing solar panels on garage roofs with south-facing exposures instead of the house roof to limit the potential for interior damage should the roof leak. III-E-6. Locate portable air-conditioning units, if needed,on rear or non-character-defining elevations. III-E-7. The use of underground wiring is encouraged where possible, but be sure to protect significant site features, including archaeological resources and mature vegetation,from damage if underground utility and communication lines are installed. F Design Standards for ACCESSIBILITY AND SAFETY CONSIDERATIONS III-F-1. Determine if solutions to ADA requirements are compatible with preserving the Local Landmark property's historic character and setting. III-F-2. Seek input from local disability groups and preservation specialists in developing appropriate solutions to accessibility. III-F-3. When possible locate accessibility and life safety changes such as ramps,elevator additions,and fire doors on the rear elevation or a non-character-defining elevation of the Local Landmark building. III-F-4. Design any new or additional means of access or egress so that the change is reversible and the original design of the historic entrance or porch is not compromised.