Architectural Design Standards

September 23, 2009

ADS 5.6 Building Materials

Residential
V	VI	VII	VIII

ADS 5.6.1 Intent.

Buildings shall be attractive and durable. To ensure this, buildings shall be constructed of high-quality materials and require minimal maintenance.

Standard:

ADS 5.6.2 Allowed Materials.

Exterior building materials are classified according to their visual weight; exterior building materials shall be limited to the following:

Allowed Exterior Materials

Heavy Materials

Medium Materials

Light Materials

Stone
Cast Stone
Brick
Synthetic Stone (see ADS 5.6.3)
When recommended by the

Site Plan Review Committee, the

Planning Commission may

approve other materials

found to be comparable to the

listed heavy materials (high-quality, durable)

Stucco with smooth sand finish
Water-Managed EIFS

Cement Board
Wood

ADS 5.6.3 Synthetic Stone.

Synthetic stone, such as pre-manufactured fiberglass, cultured stone, or glass-fiber reinforced concrete is permitted, provided it is identical in appearance and of equal or greater durability to natural stone.

ADS 5.6.4 Location.

Heavy materials shall be located below medium and light materials; medium materials shall be located below light materials. Heavy materials should extend to grade.

ADS 5.6.5 Required Heavy Materials.

As outlined below, the total exterior wall area of each building elevation, excluding gables, windows, doors, and related trim, shall be heavy materials. The balance of exterior wall area shall be medium or light materials.

Building Type V (Apartment Building):
- At least 40% of the total exterior wall area of each building elevation shall be heavy materials.
Building Type VI (Townhouse):
- At least 40% of the average exterior wall area shall be heavy materials.
- Building elevations facing perimeter streets or established residential neighborhoods shall provide at least 40% heavy materials.
- Each building elevation shall provide at least 25% heavy materials.
- Material transitions at corners shall be made in accordance with these standards.
Building Types VII and VIII (Duplexes):
- Unless approved as one of the City's adopted portfolio home designs, at a minimum, a wainscot of heavy materials shall be provided on each building elevation facing perimeter streets. In lieu of a continuous wainscot, alternative larger areas of heavy materials may be considered in locations conducive to the building architure.

ADS 5.6.6 Vertical Change of Materials.

A vertical change of materials shall occur at an interior corner or shall not occur within four (4) feet of an exterior corner.

ADS 5.6.7 Building Rehabilitation.

The rehabilitation of existing buildings shall comply with the requirements for exterior building materials. Use of alternate exterior materials for the rehabilitation of existing buildings is subject to approval by the Planning Commission and/or City Council upon recommendation of the Site Plan Review Committee.

ADS 5.6.8 Prohibited Materials.

Unless approved by the Site Plan Review Committee, exterior building materials shall not include the following:

Prohibited Exterior Materials
Rough-Sawn Wood Board and Batten Wood Vinyl Siding Barrier-Type EIFS	Tilt-up Concrete Panels Painted Concrete Block Field-Painted or Pre-Finished Standard Corrugated Metal Siding	Standard Single or Double Tee Concrete Systems Smooth-Faced Gray or Stained Concrete Block