(A) General provisions.
(1) Metal buildings. Except in association with farming activities, no sheet metal, corrugated metal, galvanized metal, unfinished metal buildings (walls or roofs), except those specifically intended to have a corrosive designed finish such as COR-TEN steel, copper, or other metal specifically engineered for exterior architectural use, shall be permitted in any zoning district.
(2) Architectural and aesthetic compatibility. Buildings in all zoning districts shall maintain a high standard of architectural and aesthetic compatibility with surrounding properties to ensure that they will not adversely impact the community’s public health, safety, and general welfare.
(3) Permitted exterior building materials.
(a) The primary exterior building facade finishes for residential uses shall consist of materials comparable in grade to the following:
1. Brick.
2. Stone (natural or artificial).
3. Integral colored split face (rock face) concrete block.
4. Wood, natural or composite, provided the surfaces are finished for exterior use or wood of proven exterior durability is used, such as cedar, redwood, or cypress.
5. Stucco (natural or artificial).
6. Vinyl, steel, or aluminum siding.
(b) The primary exterior building facade finishes for commercial uses shall consist of materials comparable in grade to the following.
1. Brick.
2. Stone (natural or artificial).
3. Integral colored (not including natural gray) cast in place concrete or precast concrete panels.
4. Integral colored (not including natural gray) split face (rock face) concrete block.
5. Glass curtain wall panels.
6. Stucco (natural or artificial).
7. Steel or aluminum siding.
(c) The primary exterior building facade finishes for industrial and institutional uses shall consist of materials comparable in grade and quality to the following.
1. Brick.
2. Stone (natural or artificial).
3. Integral colored (not including natural gray) cast in place concrete or precast concrete panels.
4. Integral colored (not including natural gray) split face (rock face) concrete block.
5. Curtain wall panels of steel, fiberglass, and aluminum (nonstructural, non-load bearing), provided such panels are factory fabricated and finished with a durable non-fade surface and their fasteners are of a corrosion resistant design.
6. Glass curtain wall panels.
7. Stucco (natural or artificial).
8. Steel, aluminum, COR-TEN siding.
(d) Roofs that are exposed or an integral part of the building aesthetics shall be constructed only of commercial grade asphalt shingles, wood shingles, standing seam metal, slate, tile, or copper. Flat roofs, which are generally parallel with the first floor elevation, are not subject to these material requirements.
(e) Building foundations not exceeding 2 feet and other such portions of a building’s facade need not comply with the requirements for the facade treatment or materials.
(4) Prohibited exterior building materials. Unadorned pre-stressed concrete panels, non-decorative concrete block, sheet metal, corrugated metal, or unfinished metal shall not be used as exterior materials.
(5) Pole construction buildings. Pole construction buildings shall not be permitted in any zoning district except the A-1 Agricultural District in association with farming activities upon the application for and issuance of a conditional use permit by the City Council.
(B) Residential and Commercial Districts.
(1) Except in the A-1 Zoning District, all accessory buildings in excess of 120 square feet that are accessory to residential dwelling units shall be constructed with a design consistent with the general character of the principal structure on the lot.
(2) Accessory buildings for nonresidential uses, including those allowed in the residential districts, shall be of a similar character, design, and facade, as the principal structure.
(C) Exceptions. Exceptions to the provisions of this section may be granted as a conditional use permit by the City Council, provided that:
(1) The proposed building maintains the quality intended by this title.
(2) The proposed building is compatible and in harmony with other structures within the district.
(3) The provisions of Chapter 196 (Conditional Use Permits) of this title are considered and satisfied.
(Ord. 2011-06-07A, passed 6-7-2011)