[Added 6-9-2025 by Ord. No. 9-2025[1]]
Residential zoning districts are primarily intended to create, maintain and promote a variety of housing opportunities for individuals and households of various ages, incomes and lifestyle preferences. The districts are also intended to maintain and promote the desired physical character of existing and developing neighborhoods. While the R Districts primarily accommodate residential uses, some nonresidential (public and civic) uses are also allowed. The Village's residential zoning districts are listed in Table 90-110-1. When this zoning chapter refers to "residential" zoning districts or "R" zoning districts, it is referring to these districts.
Table 90-110-1
Residential (R) Districts
Symbol
District Name
RE
Estate Residential
RL
Low-Density Residential
RN
Neighborhood Residential
RM
Moderate-Density Residential
RH
High-Density Residential
(a) 
RE Residential Estate District. The RE (Residential Estate) District accommodates detached houses on very large lots, and very limited keeping of horses or farm animals. The village intends RE lots to lie adjacent to or contain preserved open space, contain custom high-quality architecture, and that subdividers create by a limited number of land divisions.
(b) 
RL Low-Density Residential District. The RL (Low-Density Residential) District accommodates one or two dwelling units on lots. The village intends RL lots to make up the bulk of the interior of its suburban-style residential areas with frontage along local streets.
(c) 
RN Neighborhood Residential District. The RN (Neighborhood Residential) District accommodates up to six dwelling units on lots. The village intends RN lots to bridge suburban- and urban-style areas, provide a mix of housing in a neighborhood context, or lie along collector and minor arterial streets.
(d) 
RM Moderate-Density Residential District. The RM (Moderate-Density Residential) District accommodates a broad variety of residential building types at a moderate scale. The village intends RM lots to make up some of its urban-style residential neighborhoods or have frontage along collector and minor, and principal arterial streets with shared, rear, or limited access.
(e) 
RH High-Density Residential District. The RH (High-Density Residential) District accommodates a denser range of residential building types allowed to exceed three stories. The village intends to apply RH zoning in areas with excellent transportation or transit access, closer to job centers, and along minor and principal arterial roadways with shared, rear, or limited access.
[1]
Editor's Note: This ordinance also amended in its entirety Division 90-110, Residential Districts, adopted by Ord. No. 19-2020, 6-8-2020, as amended 3-22-2021 by Ord. No. 05-2021; 1-10-2022 by Ord. No. 30-2021; and 1-10-2022 by Ord. No. 31-2021.
[Added 6-9-2025 by Ord. No. 9-2025]
Residential zones permit the building types listed in Table 90-110-2.
Table 90-110-2
Permitted Building Types
Building Type
Districts
See Section
RE
RL
RN
RM
RH
P = Permitted
— = Prohibited
Residential Buildings
Detached house
P
P
P
P
P
(A)
Two-unit house
P
P
P
P
P
(B)
Twinhouse
—
P
P
P
P
(C)
Townhouse building
—
—
P
P
P
(D)
Multi-unit building
—
—
P
P
P
(E)
Cottage court
—
—
P
P
P
(F)
Backyard cottage
P
P
P
P
P
(G)
Nonresidential buildings
Civic building
P
P
P
P
P
(H)
(a) 
Detached house. A detached house is a residential building that contains only one dwelling unit and is located on a single lot not occupied by other principal buildings.
Figure 90-110-1
Detached House
(b) 
Two-unit house. A two-unit house is a residential building that contains two dwelling units and is located on a single lot not occupied by other principal buildings.
Figure 90-110-2
Two-Unit House
(c) 
Twinhouse. A twinhouse is a residential building occupied by two dwelling units, each of which is located on its own lot with a common or abutting wall along the dwelling units' shared lot lines. Each dwelling unit has its own external entrance.
Figure 90-110-3
Twinhouse
(d) 
Townhouse building. A townhouse building is a residential building occupied by three or more dwelling units, each of which is located on its own lot and has one or more common or abutting walls with other dwelling units in the townhouse building. Each dwelling unit has a front and back and its own external entrance. Townhouse dwelling units do not share common floors, attics, or basements with other dwelling units.
Figure 90-110-4
Townhouse Building
(e) 
Multi-unit building. A multi-unit building is a residential building that is located on a single lot and occupied by three or more dwelling units.
Figure 90-110-5
Multi-Unit Building
(f) 
Cottage court. A cottage court development is a grouping of small detached houses, two-unit houses, twinhouse, or backyard cottages clustered around a common open space or shared courtyard.
Figure 90-110-6
Cottage Court
(1) 
Open space. Property owners must provide at least 400 square feet of contiguous, regularly shaped, common open space per unit as the focal point of the development accessible to its residents.
(2) 
Building orientation. Property owners must orient the unit entrances around at least two sides of the common open space, except units adjacent to local and collector streets that must face towards the street.
(3) 
Building proximity. Property owners must locate all units within 75 feet of the common open space area.
(4) 
Parking. Property owners may provide cottage court parking in attached garages, detached garages, or in a shared parking area. They must screen shared parking areas in accordance with the vehicular use area screening standards of § 90-430.30. They may not locate parking in the required courtyard or common open space area.
(g) 
Backyard cottage. A backyard cottage is a small accessory residential building occupied by a single, self-contained accessory dwelling unit no larger than 40% of the gross floor area of the principal dwelling unit (excluding any attached garage). Backyard cottages are located on the same lot as but not attached to a detached house.
(1) 
Number allowed. The village prohibits more than one backyard cottage on a single lot. It also prohibits backyard cottages on lots occupied by a two-unit house or a secondary suite.
(2) 
Rental. Backyard cottages may not be rented for periods of less than seven consecutive days.
(3) 
Residents allowed. The total number of residents that reside in the backyard cottage and the detached house, combined, may not exceed the number permitted for a household.
(4) 
Design. The exterior finish material, roof pitch, and trim elements must visually match the exterior finish material of the principal building in type, size and placement.
(5) 
Entrances. Entrances to backyard cottages may not face the nearest side or rear property line unless there is an alley abutting that property line.
(6) 
Deed restriction. The subject property owner must record a deed restriction stating that the owners of the subject property agree to comply with all applicable regulations and to notify all prospective purchasers of such regulations. The deed restriction must run with the land and bind the property owner, their heirs and assigns, and any parties subsequently acquiring any right, title, or interest in the property. The deed restriction must be in a form prescribed by the Village Attorney.
(h) 
Civic building. A civic building is a building occupied by a public or civic use.
Figure 90-110-7
Civic Building
[Added 6-9-2025 by Ord. No. 9-2025]
The Village shall only approve multiple principal buildings on a lot if the Village approved them in accordance with the condominium plat procedures of Chapter 74 Subdivisions, in accordance with § 90-110.020, Subsection (f), or the property owner submits a plan showing how they could subdivide the lot so that each such principal and accessory building would comply with the regulations Chapter 74 Subdivisions and this zoning chapter.
[Added 6-9-2025 by Ord. No. 9-2025]
Property owners who plan to construct twinhouses or townhouses must submit a declaration of covenants, conditions, and restrictions or a similar enforceable agreement with the land division document, if creating new lots, or with the building permit, if not creating new lots. The declaration must specify respective owner obligations and rights with regard to any common structures, such as shared walls, roofs, and other inseparable improvements.
[Added 6-9-2025 by Ord. No. 9-2025]
Property owners must prioritize accessing parking areas for lots located along collector, minor arterial, or principal arterial streets from the rear when possible.
[Added 6-9-2025 by Ord. No. 9-2025]
Property owners must construct all new dwelling units with shared structural elements (e.g., walls or roofs) as a single project during the same construction time period.
[Added 6-9-2025 by Ord. No. 9-2025; amended 2-23-2026 by Ord. No. 19-2025]
R District lots and buildings must comply with the regulations of Table 90-110-3.
Table 90-110-3
Lot and Building Regulations
Regulation
RE
RL
RN
RM
RH
Lot
1
Minimum lot area (square feet)
21,780
6,000
4,200
3,600
—
1
Maximum lot area (square feet)
430,560
43,560
43,560
130,680
—
2
Minimum lot width (feet)
100
55
35
—
—
2
Maximum lot width (feet)
—
120
240
360
1,080
Minimum units per net acre
0.1
1
6
9
12
Maximum units per net acre
2
8
16
30
—
Maximum impervious surface coverage (% of lot)
25
50
65
80
100
Principal Building Siting
3
Street setback (minimum; feet)1
20
15
4
Interior side (minimum; feet)2
16
8
6
5
Rear (minimum; feet)
25
Accessory Building Siting
Front yard (minimum; feet)
100
—
Secondary or side yard (minimum; feet)3
20
15
Side and rear setbacks (minimum; feet)
10
3
Garages
Garage configuration
See § 90-420.100 Parking Area Layout and Design
Maximum Building Height
Principal building (stories)
2
3
6
Accessory building (stories)
2
1.5
2
Minimum Finished Above-Grade Living Area (square feet)
2,500
1,250
Per building code
Notes:
(1)
May reduce by five feet on lots with rear access to parking/garage.
(2)
Interior side building setbacks apply only to end units (i.e., on nonattached side).
(3)
The street-facing wall of a secondary or side street yard accessory building must include at least 20 square feet of window area or comply with one of the R District Screening Options in Table 90-430-2.
(4)
Twinhouse and townhouse buildings may use the lot width and area regulations as a single building site, per § 90-110.75.
[Added 2-23-2026 by Ord. No. 19-2025]
(a) 
Purpose. The village intends this section to allow twinhouse and townhouse buildings on individual lots while maintaining the lot and density patterns intended for each residential zoning district.
(b) 
Applicability. This section applies to twinhouse and townhouse buildings, as defined and permitted in § 90‑110.20, where each dwelling unit is located on its own lot.
(c) 
Lot areas and widths. The village shall treat all lots that contain dwelling units within a twinhouse or townhouse as a single building site when applying the lot and building regulations of Table 90‑110‑3. When applying the table, the following regulations should apply.
(1) 
The lot areas for twinhouse or townhouse buildings is the sum of the areas of the lots that share a zero-foot side setback.
(2) 
The lot widths for twinhouse or townhouse buildings is the sum of the widths of the lots that share a zero-foot side setback.
(3) 
The area and width summations must comply with the lot area and lot width standards of Table 90‑110‑3 for the zoning district in which it is located.
(d) 
Interior lot lines and setbacks.
(1) 
The village does not require interior side setbacks along lot lines located between attached dwelling units within the same twinhouse or townhouse building, subject to the applicable building and fire codes.
(2) 
Interior side setbacks from Table 90‑110‑3 continue to apply along the non‑attached side of end units and along rear lot lines.
(e) 
Relationship to principal building rule. Treating multiple lots as a single building site for purposes of Table 90‑110‑3 does not authorize more than one principal building on an individual lot, where § 90‑110.30 governs.