§ 72-1302. Nonresidential architectural design themes.

(a)

Establishment of architectural styles. Development shall conform to one of the following architectural styles: 1) frame vernacular; 2) masonry vernacular; 3) Mediterranean revival; 4) classical revival; or 5) bungalow. An example of each style is found below:

(b)

Frame vernacular; requirements.

(1)

Building configuration. Buildings shall provide a minimum eight-foot wide front porch facing a public right-of-way.

(2)

Building materials.

a.

Exterior finish material on all facades shall be horizontal clapboard, lap siding, board-and-batten or other material, such as hardy board, with a simulated wood appearance.

b.

Any chimney and base shall be constructed of brick, coquina or stucco.

c.

Roof materials shall be architectural shingles, wood shingles, decorative metal shingles, standing seam panels or metal 5 v-crimp metal panels.

(3)

Architectural details.

a.

Decorative brackets with exposed nail plates at the gable end.

b.

Decorative shingles at the gable end.

c.

Double-hung sash windows broken up into separate panes by fixed or false mullions.

d.

Vertical board panel or louvered shutters to be proportioned with the window width.

e.

Decorative trim above windows and doors.

f.

Decorative wood or wood-like railings.

g.

Square columns with chamfers above railings or turned columns with capital or brackets at the top.

h.

Decorative balcony supports, cupolas and vent openings.

(4)

Roof shapes.

a.

Roofs shall be gable or hip-style with a pitch of 7:12 to 12:12 slope.

b.

A porch roof pitch shall have a 2:12 to 4:12 slope.

c.

Dormers or cupolas may be used to break up the roofline.

d.

Flat roofs with a pitch of 1/4:12 slope may be permitted on commercial or mixed-use structures with a gross building area exceeding 5,000 square feet of gross building area if at least two of the standards are included:

1.

Steeped parapet walls are erected at a maximum height necessary to enclose rooftop equipment;

2.

A minimum 18-inch high cornice treatment with three changes in the relief or thickness; or

3.

A flat roof is combined with a pitched roof.

e.

Gutters shall be half round with round downspouts and have a metal finish.

(c)

Masonry vernacular; requirements.

(1)

Building materials.

a.

Exterior finish material on all facades shall be brick (common or running bond), rustic stone, rough rock-faced or concrete block with a medium stucco finish.

b.

Roof materials shall be compositional or architectural shingles for hip roofs and built-up (tar and single-ply, modified bitumen or other LEED certified material) for flat roofs.

(2)

Architectural details. Simple ornamentation of cast concrete applications or decorative brick work, such as corbelling along the roofline, doors and windows.

(3)

Roof shapes.

a.

Roofs shall be gable or hip-style with a pitch of 7:12 to 10:12 slope.

b.

Flat roofs with a pitch of 1/4:12 slope may be permitted on commercial or mixed-use structures with a gross building area exceeding 5,000 square feet of gross building area if at least two of the standards are included:

1.

Steeped parapet walls are erected at a maximum height necessary to enclose rooftop equipment;

2.

A minimum 18-inch high cornice treatment with three changes in the relief or thickness; or

3.

A flat roof is combined with a pitched roof.

c.

Gutters shall be half round with round downspouts and have a metal finish.

(d)

Mediterranean revival; requirements.

(1)

Building materials.

a.

Exterior finish material on all facades shall be primarily stucco (light, smooth or medium texture). Tile, stone, split-faced concrete block or coquina may be used as a secondary material if it does not exceed one-third of the area of the building facade.

b.

Roof materials shall be clay or concrete barrel tiles for gable or hip roofs.

(2)

Architectural details.

a.

Simple to dramatic ornamentation, such as wall tiles, medallions, iron work and wall reliefs, shall be utilized.

b.

Roof eaves shall be smooth plaster or cast stone or stone-like cornice.

c.

Parapet walls shall be tiered with a decorative cap or cast stone or stone-like cornice.

d.

Lintel, if exposed, shall not exceed a height of eight inches and be at least one foot below cornice. Lintels shall be constructed of cast stone, smooth plaster or wood and appear to be solid.

e.

Roof overhangs shall include decorative rafter tails.

f.

Casement, single- or double-hung windows broken up into separate panes by fixed or false mullions.

g.

Windows shall be recessed at least two inches from the facade to the window frame.

h.

Balconies, porches and loggias shall be constructed of decorative metal, wood, carved stone, concrete or stucco and be supported with brackets made of wood or cast stone.

i.

Railings shall be wrought iron, aluminum picket or cast stone.

j.

Columns shall be Doric, Corinthian, spiral or square in design.

k.

Arches shall be round to elliptical in form.

l.

Any chimney and base shall have a stucco finish and a decorative metal roof over arched openings for water protection.

(3)

Roof shapes.

a.

Roofs shall be gable or hip-style with a low pitch of 4:12 to 5:12 slope.

b.

Minimal use of eaves is permitted and the gable end must consist exclusively of one barrel.

c.

Flat roofs with a pitch of 1/4:12 slope may be permitted on commercial or mixed-use structures with a gross building area exceeding 5,000 square feet of gross building area if at least two of the standards are included:

1.

Steeped parapet walls are erected at a maximum height of 42 inches or as needed to enclose rooftop equipment;

2.

A minimum 18-inch high cornice treatment with three changes in the relief or thickness; or

3.

A flat roof is combined with a pitched roof.

d.

Gutters shall be half round with round downspouts and have a metal finish.

(e)

Classical revival; requirements.

(1)

Building configuration. Buildings shall provide a minimum eight-foot wide front porch facing a public right-of-way.

(2)

Building materials.

a.

Exterior finish material on all facades shall be primarily horizontal lap board siding with a wood appearance or brick or stucco.

b.

Roof materials shall be compositional, architectural or metal shingles for hip roofs or gable roofs and built-up (tar and single-ply, modified bitumen or other LEED certified material) for flat roofs.

(3)

Architectural details.

a.

Decorative entablatures at the gable end.

b.

Columns shall be Doric, Ionic or Corinthian in design.

c.

Lintels shall be brick, stone or precast concrete with a smooth face and flush with the veneer.

d.

Porches and balconies shall have columns, balustrade elements, metal picket/wood railing and entablatures.

e.

Paneled and/or louvered shutters proportionate with the window width.

f.

Single- or double-hung windows with vertical proportions with panes separated by fixed or false mullions.

g.

Entryways will detailed transoms, sidelights or ornamental woodwork.

h.

Chimneys shall have a brick or stucco finish.

(4)

Roof shapes.

a.

Roofs shall be gable or hip-style with a pitch of 6:12 to 10:12 slope.

b.

Flat roofs may be permitted if at least two of the standards are included:

1.

Steeped parapet walls are erected at a maximum height of 42 inches or as needed to enclose rooftop equipment;

2.

A minimum 18-inch high cornice treatment with three changes in the relief or thickness; or

3.

A flat roof is combined with a pitched roof.

c.

Gutters shall be half round with round downspouts and have a metal finish.

(f)

Bungalow; requirements.

(1)

Building configuration. Buildings shall provide a minimum eight-foot wide front porch facing a public right-of-way.

(2)

Building materials.

a.

Exterior finish material on all facades shall be primarily horizontal lap board siding with a wood appearance or brick or stucco.

b.

Roof materials shall be compositional or architectural shingles.

(3)

Architectural details.

a.

Porches shall have a tapered or square columns resting on masonry piers connected by a balustrade or knee wall.

b.

Exposed rafter ends shall have a decorative carved pattern.

c.

Lattice roofs at the gable ends.

d.

Double-hung windows in groups of two to four with wide proportions and panes separated by fixed or false mullions.

e.

Minimum 1.5-inch projecting window/door header.

f.

Chimneys shall have a brick or stucco finish and tapered.

(4)

Roof shapes.

a.

Roofs shall be gable or hip-style with a pitch of 4:12 to 6:12 slope.

b.

Integral front porch may match main pitch or break at front wall to a 3:12 or 4:12 pitch.

c.

Gutters shall be half round with round downspouts and have a metal finish.

(Ord. No. 2009-24, § I, 10-1-09)