For utility buildings and garages, appropriate materials are brick, brick veneer, brick-scored concrete block (painted brick red) and split-faced concrete block.
New construction shall be of exterior materials similar to those already in use on the street, such as brick, wood trim, and glass. Any additions or alterations to primary facades or to prominently-visible secondary facades shall conform to the historic character of the building. The use of imitation, artificial or simulated exterior materials is prohibited, except when such materials serve to replicate original architectural elements which have been lost or destroyed.
Below are lists of exterior materials which are approved and those that are prohibited. By no means are these lists complete, but indicate the most common materials, and will serve as a guide in selecting others, particularly for primary facade treatment:
APPROVED:
Brick
Glass
Aluminum or steel gutters (color-clad and complementary to the building)
Stone
Wood (for unenclosed rear porches, decorative trim surrounding windows and doors, and replacement of original wood treatment)(Painted or stained with opaque stain)
Painted or color anodized metal
Copper or zinc (for roof, gutters, downspouts)
Terra cotta (trim)
Cast or wrought iron
Slate (for roof, dormers, siding)
Vinyl siding (as replacement for original clapboards)
PROHIBITED
Permastone
Stucco
Aluminum or T-111 Siding
Expanded metal screens
Raw aluminum or galvanized steel
Porcelanized metal panels
Corrugated fiberglass, cement asbestos board or asbestos shingles (for wall treatment)
Unpainted or untreated wood
Raw concrete block
Ceramic tile (in vertical applications)
Tar paper or roll roofing
Any material not specifically intended for exterior use
The range of colors used on facades should unify the area while emphasizing the distinct qualities of each building. The dominant color applied to the building shall be a background somewhat neutral in color, and shall approach the value and intensity of natural materials, such as brick and stone. Brighter complementary colors shall be limited to the trim.
New windows installed shall fill the original opening without the use of fixed panels. This may be modified only in the case of segmental arched windows, and then the eyebrow of the window is to be decorative in design. If an existing window must be filled in, the color and type of exterior materials used on the original building shall be used. The window opening shall still be expressed so as not to change the basic proportions of the facade. For major renovation projects, if a window has previously been filled in, in a manner inconsistent with this policy, a reinstatement of the original facade proportions is required through the use of materials already in existence on the facade. Window air conditioner units shall not be placed on the front of the building. Compressors for central air conditioning units shall not be placed in front of the building line, and shall be screened from the street.
Unpainted galvanized steel or aluminum is not a suitable material for guttering.
Existing dormers be retained, repaired or replaced on the primary facade of a building according to the original design, whenever possible.