1. The Districts. The city's residential zoning districts are listed below. When this zoning ordinance refers to "residential" zoning districts or "R" districts, it is referring to these districts.

Zoning District	Map Symbol	Formerly Known As
Garden Residential	GR	Single-unit Residential-15
Suburban Residential	SR	R1-9, Single-unit Residential-9
Neighborhood Residential	NR	R1-6, Single-unit Residential-6
Mixed Residential	MR	R2, Two-unit Residential
Low-Density, Multi-unit Residential	LDM	R4, Multi-unit Residential
Medium-Density, Multi-unit Residential	MDM	R8, Multi-unit Residential

2. Purposes. Wauwatosa's residential zoning districts are primarily intended to create, maintain and promote a variety of housing and lifestyle opportunities for individual households and to maintain the desired physical character of existing neighborhoods. While the districts primarily accommodate residential use types, some nonresidential uses are also allowed. The residential district standards provide development flexibility, while at the same time helping to ensure that new development is compatible with the city's many neighborhoods. In addition, the regulations offer certainty for property owners, developers and neighbors about the limits of what is allowed.
   1. The GR, SR, and NR districts are intended for low-density neighborhoods primarily characterized by detached houses, semi-detached, and two-unit houses on individual lots.
   2. The MR district supports a mix of detached, semi-detached, two-unit houses, three-unit/four-unit houses, and small multi-unit residential buildings in walkable, residential neighborhoods. It provides a modest increase in housing density while maintaining a single-unit residential character.
   3. The LDM district is primarily intended to accommodate detached houses, semi-detached houses, two-unit residential buildings, three-unit/four-unit houses, and small multi-unit residential buildings. The district helps provide a mix of low- and moderate-density housing choices within a walkable, residential context.
   4. The MDM district is intended to accommodate detached houses, semi-detached houses, two-unit houses, three-unit/four-unit houses, and small multi-unit residential buildings. The district helps provide moderate density housing choices in neighborhood areas near corridors.

Principal uses are allowed in residential zoning districts in accordance with the use table of Section 24.07.030.

1. General. This section establishes basic lot and building regulations that apply in residential districts. These regulations offer certainty for property owners, developers and neighbors about the limits of what is allowed; they are not to be construed as a guarantee that maximum allowed densities and development yields can be achieved on every lot. Other factors, such as topography, the presence of floodplains or protected resources, off-street parking, landscaping requirements and other factors may work to further limit actual development potential.
2. Basic Standards. The lot and building standards of the following table apply to all principal and accessory uses allowed in R districts, except as otherwise expressly stated. General exceptions to these standards and rules for measuring compliance can be found in Section 24.18.030.
   

   Lot and Building Standards	DISTRICTS
   	GR	SR	NR	MR	LDM	MDM
   Minimum Lot Area (square feet)	9,000	6,000	4,000	4,000	4,000	4,000
   Minimum Lot Width (frontage) (feet)
   Corner lot	85	60	50	50	50	50
   Interior lot	75	50	40	40	40	40
   Minimum Setbacks
   Front (feet)	30[1]	30[1]	25[1]	20[1]	20[1]	20[1]
   Side, Street (% of lot width)	20[2]	20[2]	20[2]	20[2]	20[2]	20[2]
   Side, Interior one side/both sides combined (feet)	5/10	5/10	3/9	3/9	3/9	3/9
   Rear (% of lot depth)	20[3]	20[3]	20[3]	20[3]	20[3]	20[3]
   Accessory buildings:
   Rear and interior side (feet)	1.5	1.5	1.5	1.5	1.5	1.5
   Alley (feet)	5	5	5	5	5	5
   Max. Building Coverage (% of lot area)
   All principal and accessory buildings combined
   Corner lot	35	42	42	42	60	70
   Interior lot	35	37	37	37	40	60
   Accessory buildings[4]	12	12	12	12	12	12
   Accessory dwelling units [4]	n/a	n/a	n/a	n/a	n/a	n/a
   Maximum Height (feet)
   Principal buildings	35[5]	35[5]	35[5]	35[5]	35[5]	35[5]
   Accessory buildings[6]	16	16	16	16	16	16

   [1] Setback "averaging" is allowed in some cases, See Section 24.18.030E.1.e. [2] Not required to exceed 15 feet. [3] Must be at least 15 feet, but not required to exceed 25 feet. [4] Accessory Dwelling Units (ADUs) are not included in accessory building lot coverage limits. Size and dimensional standards for ADUs are provided in Section 24.10.075. [5] Public and civic buildings, religious assembly, and schools may be up to 60 feet in height. One additional foot for front, side and rear setback is required for each foot of building height above 35 feet. [6] Accessory building heights of up to 20 feet may be approved by the zoning administrator if the administrator determines that the additional height is necessary to accommodate a roof pitch consistent with the architectural style of the principal building.

(Ord. O-13-17, § I, 11-19-2013)

Uses and development in residential districts are subject to all other applicable regulations and standards of this zoning ordinance, including the following:

1. Nonconformities. See Chapter 24.15.
2. Accessory Uses and Structures. See Chapter 24.10.
3. Parking and Loading. See Chapter 24.11.
4. Landscaping and Screening. See Chapter 24.12.
5. Temporary Uses. See Section 24.10.080.
6. Attached and Semi-Detached Building Design Standards. See Section 24.14.045.