A.

Purpose. The purpose of this Article is to establish the development standards for a principal structure on a zoning lot by zoning district.

B.

Applicability. The provisions of this Article apply to all new construction and significant exterior renovation of existing structures. Refer to § VIII-5 (Nonconformities) for information on the continuation of nonconforming structures.

C.

General Requirements. The following code sections provide development requirements that must be met in addition to the development requirements established in this Article.

1.

Site Plan Review. All development, redevelopment, and additions to existing structures that result in an increase in gross floor area, capacity, or number of dwelling units by 15 percent or more, with the exception of single-family and two-family developments, require approval of a site plan review application by the Zoning Administrator in accordance with § VIII-3.B (Site Plan Review).

2.

Uses. See Article III (Uses) for principal, accessory, and temporary use requirements as well as standards for accessory structures.

3.

Parking and Loading. See Article V (Off-Street Parking and Loading) for off-street parking, loading, and access requirements.

4.

Landscaping and Buffering. See Article VI (Landscape Standards) for landscaping, buffering, and screening requirements.

5.

Signs. See Article VII (Signs) for signage requirements.

6.

Code of Ordinances. Refer to the Park Forest Code of Ordinances Chapter 18 (Buildings and Building Regulations) for additional development requirements outside the purview of this Unified Development Ordinance.

(Ord. No. 2078, 12-11-17)

Table IV-2-A. Summary Table of Zoning District Requirements provides a summary of the bulk and setback requirements for each zoning district, which are established in § IV-3, § IV-4, § IV-5, § IV-6, § IV-8, § IV-9, § IV-10, and § IV-11.

Table IV-2-A. Summary Table of Zoning District Requirements

(Ord. No. 2078, 12-11-17)

Table IV-3-A. R-1 District Requirements, Figure IV-3-A. R-1 District Requirements: Plan, and Figure IV-3-B. R-1 District Requirements: 3-D establish bulk and setback regulations for the R-1 District. See also § III-4 (Accessory Structures and Uses) for provisions related to accessory structures.

Table IV-3-A. R-1 District Requirements

Figure IV-3-A.
R-1 District Requirements: Plan

Figure IV-3-B. R-1 District Requirements: 3-D

(Ord. No. 2078, 12-11-17)

Table IV-4-A. R-2 District Requirements, Figure IV-4-A. R-2 District Requirements: Plan, and Figure IV-4-B. R-2 District Requirements: 3-D establish bulk and setback regulations for the R-2 District. See also § III-4 (Accessory Structures and Uses) for provisions related to accessory structures.

Table IV-4-A. R-2 District Requirements

Figure IV-4-A. R-2 District Requirements: Plan

Figure IV-4-B. R-2 District Requirements: 3-D

(Ord. No. 2078, 12-11-17)

Table IV-5-A. R-3 District Requirements, Figure IV-5-A. R-3 District Requirements: Plan, and Figure IV-5-B. R-3 District Requirements: 3-D establish bulk and setback regulations for the R-3 District. See also § III-4 (Accessory Structures and Uses) for provisions related to accessory structures.

Table IV-5-A. R-3 District Requirements

Figure IV-5-A. R-3 District Requirements: Plan

Figure IV-5-B. R-3 District Requirements: 3-D

(Ord. No. 2078, 12-11-17)

Table IV-6-A. R-4 District Requirements, Figure IV-6-A. R-4 District Requirements: Plan, and Figure IV-6-B. R-4 District Requirements: 3-D establish bulk and setback regulations for the R-4 District. See also § III-4 (Accessory Structures and Uses) for provisions related to accessory structures.

Table IV-6-A. R-4 District Requirements

Figure IV-6-A. R-4 District
Requirements: Plan

Figure IV-6-B. R-4 District Requirements: 3-D

(Ord. No. 2078, 12-11-17)

A.

Applicability. The design requirements in this Section apply to all new construction and significant exterior renovation of existing structures for non-residential and multi-family uses within the Village's C-1, C-2, and C-3 Districts. Multi-family uses within these districts are not subject to transparency requirements. See § IV-8, § IV-9, and § IV-10 for additional design requirements specific to each commercial zoning district.

B.

Design Requirements.

1.

Façade Design.

a.

Defined Base, Middle, and Top. Multi-story buildings shall be designed with a distinct base, middle, and top. The ground story (base) of the building shall be defined from the upper stories by an expression line, which is a decorative, three-dimensional linear element protruding or indented at least two inches from a building façade.

b.

Vertical Façade Articulation. Architectural or structural elements shall be incorporated at intervals of no less than 25 feet to vertically divide large flat planes along all street-facing façades in excess of 50 feet. Examples of such elements include color change, texture change, material change, or wall articulation change, such as an offset, pilaster, column, reveal, or vertical expression line, of no less than six inches.

2.

Roof Design. Green roof, white roof, and blue roof designs are encouraged.

3.

Materials.

a.

Allowed Materials. The following materials are allowed on the ground story façade: durable and natural materials, such as stone, brick, stucco, metal, concrete, burnished concrete masonry units, and non-reflective glass, unless otherwise limited by § IV-7.B.3.b (Limitation on Materials).

b.

Limitation on Materials. The following materials may be utilized for trim or architectural details but shall not exceed 20 percent of the total façade area: utility brick, vinyl or metal siding, metal wall panels, exposed aggregate (rough finish) concrete wall panels, exterior insulation and finishing systems, fiberglass, plastic, untreated wood, non-burnished concrete masonry units, and mirror glass.

C.

Explanation of Table Requirements. The following information explains the commercial design requirements established in Tables IV-8-A, IV-9-A, and IV-10-A. Refer to Figure IV-7-A. Design Requirements.

1.

Minimum Street Frontage. Proportion of street frontage along the primary street that must be occupied by the principal building's front façade. The requirement in each table establishes the minimum percentage of the front lot line that must be occupied by the front façade of the principal building.

2.

Parking Location. The yard in which an off-street parking lot is allowed.

3.

Minimum Transparency. The amount of transparency (highly transparent, non-reflective glass) required as a percentage of the total area of the street-facing ground story façade. Transparency improves the visual interest of the physical environment and its aesthetic appeal. Tinting in excess of 20 percent is not allowed.

4.

Principal Entrance Location. The façade on which the principal building entrance must be located.

Figure IV-7-A. Design Requirements

(Ord. No. 2078, 12-11-17)

Table IV-8-A. C-1 District Requirements, Figure IV-8-A. C-1 District Requirements: Plan, and Figure IV-8-B. C-1 District Requirements: 3-D establish bulk, setback, and design requirements for the C-1 District. See § IV-7 (Design Requirements for Commercial Zoning Districts) for additional design requirements that apply to all commercial districts and § III-4 (Accessory Structures and Uses) for provisions related to accessory structures.

Table IV-8-A. C-1 District Requirements

Figure IV-8-A. C-1 District Requirements: Plan

Figure IV-8-B. C-1 District Requirements: 3-D

(Ord. No. 2078, 12-11-17)

Table IV-9-A. C-2 District Requirements, Figure IV-9-A. C-2 District Requirements: Plan, and Figure IV-9-B. C-2 District Requirements: 3-D establish bulk, setback, and design requirements for the C-2 District. See § IV-7 (Design Requirements for Commercial Zoning Districts) for additional design requirements that apply to all commercial districts and § III-4 (Accessory Structures and Uses) for provisions related to accessory structures.

Table IV-9-A. C-2 District Requirements

Figure IV-9-A. C-2 District Requirements: Plan

Figure IV-9-B. C-2 District Requirements: 3-D

(Ord. No. 2078, 12-11-17)

Table IV-10-A. C-3 District Requirements, Figure IV-10-A. C-3 District Requirements: Plan, and Figure IV-10-B. C-3 District Requirements: 3-D establish bulk, setback, and design requirements for the C-3 District. See § IV-7 (Design Requirements for Commercial Zoning Districts) for additional design requirements that apply to all commercial districts and § III-4 (Accessory Structures and Uses) for provisions related to accessory structures.

Table IV-10-A. C-3 District Requirements

Figure IV-10-A. C-3 District Requirements: Plan

Figure IV-10-B. C-3 District Requirements: 3-D

(Ord. No. 2078, 12-11-17)

Table IV-11-A. M District Requirements, Figure IV-11-A. M District Requirements: Plan, and Figure IV-11-B. M District Requirements: 3-D establish bulk, setback, and design requirements for the M District. See also § III-4 (Accessory Structures and Uses) for provisions related to accessory structures.

Table IV-11-A. M District Requirements

Figure IV-11-A. M District Requirements: Plan

Figure IV-11-B. M District Requirements: 3-D

(Ord. No. 2078, 12-11-17)

A.

Applicability. The following standards for principal structure encroachments apply to all zoning districts.

B.

Principal Structure Encroachments. Table IV-12-A. Permitted Principal Structure Encroachments establishes the components of a principal structure that are permitted to encroach into required yard, provided that all additional requirements are met. Accessory structures are permitted to encroach into required yard in accordance with § III-4 (Accessory Structures and Uses).

Table IV-12-A. Permitted Principal Structure Encroachments

¹ See § VII-4.1 (Awning Signs) and § VII-4.2 (Canopy-Mounted Signs) for regulations pertaining to awning and canopy-mounted signs.

(Ord. No. 2078, 12-11-17)