The following standards are established for all lots in the residential zoning districts (R-1, R-2, R-2A, R-2B, R-3, R-3A, R-4, R-4A, R-5, R-6, and R-7) and lots in the residential portions of the PCDD and PUD. Lots in residential portions of the PCDD and PUD may be further governed as defined elsewhere in City Code.
(A) No required lot area, yard or open space allocated to a structure or lot in compliance with this chapter may be used to satisfy the minimum lot area, yard, or open space requirement for any other structure or lot, unless modified by this chapter.
(B) The maximum total building footprint, including principal and accessory buildings, may not exceed 25% of the lot area. The maximum amount of impervious surface in front yards, as measured from the public right-of-way to the front facade of the principal building, may not exceed 40%.
(C) Minimum lot area and width for each residential zone are defined in the following table:
Figure 152.221.01 Required Minimum Lot Width and Area in Residential Districts
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Zoning District
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Minimum lot area in square feet (unless otherwise specified) | Lot width in lineal feet as measured at the front setback |
Figure 152.221.01 Required Minimum Lot Width and Area in Residential Districts
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Zoning District
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Minimum lot area in square feet (unless otherwise specified) | Lot width in lineal feet as measured at the front setback |
R-1 | 20 Acres | 330 feet* |
R-2 | 13,500 | 100* |
R-2A | 12,825 | 95* |
R-2B | 11,475 | 85* |
R-3 | 10,800 | 80* |
R-3A | 9,750 | 75* |
R-4 (lots for single-family dwellings) | 8,500 | 70* |
R-4 lots for two-family dwellings (for lots of record prior to 2/1/80 and on which two-family dwellings were existing on the effective date of this chapter) | 10,800 | 80 |
Each half of two-family dwelling to be subdivided (for lots of record prior to 2/1/80 and on which two-family dwellings were existing on the effective date of this chapter) | 5,400 | 40 |
R-4 lots for two-family dwellings (for lots of record after 2/1/80 and on which two-family dwellings were not existing on the effective date of this chapter) | 16,200 | 120 |
Each half of two-family dwelling to be subdivided (for lots of record after 2/1/80 and on which two-family dwellings were not existing on the effective date of this chapter) | 8,100 | 60 |
R-4A for townhouse | 8,700 with basements, 10,890 without basements (buildable land only, excludes wetlands, surface waters, flood plains) | NA |
R-4B | 5,000 square feet | 45 |
R-5 for multiple family dwellings | 22,000 or 3,400 square feet for each 1 bdrm unit, 4,500 square feet for each 2 bdrm unit, and 6,300 square feet for each three bdrm unit plus 500 square feet for each bdrm over 3; whichever is greater | 120 |
R-6 for multiple family dwellings | 160,000 or 2,400 square feet for each 1 bdrm. unit, 3,000 square feet for each 2 bdrm unit, and 3,500 square feet plus 500 square feet for each bdrm over 3; whichever is greater | 400 |
R-7 for multiple family dwellings | 5 acres or 3,400 square feet for each 1 bdrm unit, 4,500 square feet for each 2 bdrm unit, and 6,800 square feet for each three bdrm unit plus 500 square feet for each bdrm over 3; whichever is greater | 500 |
R-5, R-6, and R-7 for Care centers and convalescent homes | 750 square feet of lot area for each person cared for (design capacity) | See District Requirements Above |
*See § 152.275.04 for additional lot width requirements on corner lots | ||
(D) In order to promote individual ownership of two-family dwellings the minimum lot areas and lot widths contained in this section do not apply to lot splits along the common wall where an existing two-family dwelling is being converted into two separate, attached single-family dwellings.
(Ord. 2000-936; Am. Ord. 2001-961, passed 11-26-01; Am. Ord. 2004-28, passed 12-13-04; Am. Ord. 2006-1055, passed 2-6-06)