Zoneomics Logo
search icon

Downers Grove City Zoning Code

ARTICLE 28

II Residential Districts

Sec 28.2.010 The Districts

  1. List. The Village’s residential zoning districts are listed in Table 2-1. When this zoning ordinance refers to “residential” zoning districts or “R” districts, it is referring to the districts in Table 2-1.

    Table 2-1: Residential Zoning Districts
    Map SymbolDistrict Name
    R-1Residential Detached House 1
    R-2Residential Detached House 2
    R-3Residential Detached House 3
    R-4Residential Detached House 4
    R-5Residential Attached House 5
    R-5AResidential Attached House 5A
    R-6Residential Apartment/Condo 6
  2. Description. The Village’s residential zoning districts are primarily intended to create, maintain and promote a variety of housing opportunities for households and to maintain and promote the desired physical character of existing and developing neighborhoods. While the districts primarily accommodate residential uses, some nonresidential uses are also allowed.

Sec 28.2.020 Allowed Uses

Principal uses are allowed in R districts in accordance with Table 5-1. Only one principal building and use may be located on a single lot in the R districts.

(Ord. No. 5706, 7/10/18)

Sec 28.2.030 Lot And Building Regulations

The lot and building regulations of Table 2-2 apply to all principal uses and structures in R districts, except as otherwise expressly stated in this zoning ordinance. General exceptions to lot and building regulations and rules for measuring compliance can be found in Article XIV of this Chapter. Additional regulations governing accessory uses and structures can be found in DGMC Section 28.6.010. See also Figure 2-1. Additional regulations governing non-conforming lots can be found in DGMC Section 28.11.020.

Table 2-2: R District Lot and Building Regulations


RegulationsR-1R-2R-3R-4R-5R-5AR-6

Minimum District Area (square feet)
20,00015,00010,5007,50087,12087,12087,120
L1Minimum Lot Area (square feet)

Detached house20,00015,00010,5007,5007,5007,5007,500

Attached house (applies to development not individual units) ----8,0008,00010,500

Two-unit house----10,50010,50010,500

Apartment/condo------10,500

Other buildings/uses20,00015,00010,5007,50010,50010,50010,500

Minimum Lot Area per Dwelling Unit (square feet)

Detached house20,00015,00010,5007,5007,5007,5007,500

Attached house----4,0004,0002,500

Two-unit house----5,2505,2505,250

Apartment/condo------1,000

Other buildings/uses-------
L2Minimum Lot Width (feet)








Detached house100857550505050

Attached house [1]----808080

Two-unit house ----808080

Apartment/condo------80

Other buildings/uses100857550808080
L3Minimum Street Frontage [1]
40404040404040

Minimum Building Setbacks
S1 Street (feet)
40353025252525
S2 Side (interior) (% lot width/feet, whichever is greater)
[2]10/710/610/510/510/510/5[3]
S3 Rear (feet)
20202020202020

Maximum Floor Area Ratio

Residential
------1.50

Nonresidential0.600.600.600.600.800.801.50
CMaximum Building Coverage (% of lot, principal + accessory)
32323232323240

Maximum Building Height (feet)

Overall (highest point)35353535353535

Eave [4]252525252525-

Notes to Table 2-2:

[1] Minimum lot frontage and lot width requirements do not apply to individual units in attached house projects.

[2] R-1 minimum side setback is ten percent (10%) of lot width or ten feet (10'), whichever is less, with no side setback less than seven feet (7').

[3] Minimum interior side setback for apartment/condo or nonresidential building on lots abutting R-1 through R-5A districts is twenty feet (20'), plus one foot (1') of additional setback for each foot of building height above twenty feet (20'). See Figure 2-2.

[4] The maximum eave height regulation does not apply to dormers, provided that individual dormers do not exceed four and one-half feet (4.5') in width and the combined width of all dormers projecting from a single side of the building does not exceed twenty-five percent (25%) of the length of that side of the building and the dormers are separated by a distance of at least five feet (5'). See Figure 2-3.

Figure 2-1: Lot and Building Regulation Diagram

Figure 2-2: Apartment/condo and Nonresidential Building Setbacks

Figure 2-3: Dormer Exception to Eave Height Regulation

HISTORY
Amended by Ord. 5914 ZO - Omnibus 2022 on 2/15/2022

Sec 28.2.040 Generally Applicable Regulations

Uses and structures in residential zoning districts may be subject to other regulations and standards, including the following.

  1. Nonconformities. See Article XI of this Chapter.
  2. Accessory Uses and Structures. See DFMC Section 28.6.010.
  3. Parking. See Article VII of this Chapter.
  4. Fences. See DGMC Section 28.10.010.
  5. Signs. See Article IX of this Chapter.
  6. Landscaping and Screening. See Article VIII of this Chapter.
  7. Outdoor Lighting. See DGMC Section 28.10.030.

5914