(A) Platting required. No use shall be established or altered and no structure shall be constructed or altered except upon a lot that has been platted in accordance with or which otherwise meets, the requirements of the subdivision regulations. Development requirements are minimum requirements for the arrangement of lots and spaces to be achieved in all developments.
(B) Lot area and yard space preserved. The lot area and yard space required for a use or structure shall be maintained during its life and shall not be reduced below the minimum requirement, occupied by another use or structure, or counted as yard space for any other use or structure.
(1) Open yards required. The yard space required for a use or structure shall, during its life, remain free of all uses or occupancy except as follows:
(a) Fences, walls and landscaping shall be permitted in any required yard, or along the edge of any yard, provided that no fence or wall between a street and a front building setback line is more than three feet in height, except as required in §§ 153.130 through 153.138 or in accordance with an approved final development plan of a Planned Development District.
(b) Eaves, cornices, window sills and belt courses may project into any required yard a distance not to exceed two feet.
(c) Patios and seat walls, not exceeding a combined 18 inches in height above grade, shall be permitted to encroach into the required rear yard a distance not to exceed five feet. Structures and Accessory Structures, including, but not limited to, porticos, pergolas, and canopies, are not permitted to encroach into the rear setback.
(d) Stoops, not exceeding 30 inches in height, may project beyond the front and rear building setback line not to exceed five feet.
(e) The height of a structure may not be artificially increased by the use of mounding unless otherwise required by the zoning district regulations.
(f) Driveways shall be setback at least three feet from a side lot line or adjacent to the side lot line where a single common drive is provided for two adjoining lots as listed in § 153.210.
(h) Rain barrels and other similar rainwater harvesting devices may project into a front setback, and a side and/or a rear yard a distance not to exceed three feet.
(2) Yards not otherwise required. Yard space not otherwise required but provided shall be five feet or more in width.
(3) Yards maintained. All yard space shall be maintained in accordance with one or more of the following provisions:
(a) Fenced as permitted or required.
(b) Landscaped by lawns, shrubs, trees and other plantings, maintained in a neat and orderly natural state, or used for permitted accessory or ancillary use.
(c) Paved for parking, driveways, or other vehicular uses as permitted.
(4) Maximum lot coverage.
(a) Structures, parking, driveways, vehicular use areas, service areas, pedestrian areas, and other hard-surfaces or paved areas shall not cover more than 70% of the total lot area within the following zoning districts:
R-12 Urban Residential District
SO, Suburban Office and Institutional District
NC, Neighborhood Commercial District
CC, Community Commercial District
RI, Restricted Industrial District
LI, Limited Industrial District
GI, General Industrial District
OLR, Office, Laboratory, Research District
TF, Technology Flex District
ID-1, Innovation District (Research Office)
ID-3, Innovation District (Research Assembly)
Excavation and Quarry
Oil and Gas
Exceptional Uses
(b) Structures, parking, driveways, vehicular use areas, service areas, pedestrian areas, and other hard-surfaces or paved areas shall not cover more than 80% of the total lot area within the following zoning districts:
CCC, Central Community Commercial
CB, Central Business District
(c) The lot coverages contained herein are maximums and should not be interpreted to restrict or otherwise limit any other requirements of this Code or the authorized discretion of the city's boards, commissions or City Council. This maximum lot coverage subsection shall not apply to sites which have previously approved final development plans or a certificate of zoning compliance or other similar final approval by the city prior to the date this division takes effect.
(d) Structures, parking, driveways, vehicular use areas, service areas, pedestrian areas, and other hard-surfaces or paved areas shall not cover more than 45% of the total lot area within the following residential districts:
R-1, Restricted Suburban Residential District
R-2, Limited Suburban Residential District
R-3, Suburban Residential District
R-4, Suburban Residential District
R-10, Two-Family Residential District
(e) Unless otherwise required in an approved Planned Unit Development, structures, parking, driveways, vehicular use areas, service areas, pedestrian areas, and other hard-surfaces or paved areas shall not cover more than 45% of the total lot area within a residential PUD, Planned Unit Development District. Lot coverage and setback requirements for residential development should follow the design principles outlined in the Neighborhood Design Guidelines.
(f) Structures, parking driveways, vehicular use areas, service areas, pedestrian areas and other hard-surfaces or paved areas shall not cover more than 75% of the total lot area within the following zoning districts:
ID-2, Innovation District (Research Flex)
ID-4, Innovation District (Research Mixed Use)
('80 Code, § 1183.02) (Ord. 21-70, passed 7-13-70; Am. Ord. 33-93, passed 6-21-93; Am. Ord. 142-99, passed 2-22-00; Am. Ord. 17-07, passed 4-9-07; Am. Ord. 30-10, passed 9-13-10; Am. Ord. 18-11, passed 5-23-11; Am. Ord. 32-11, passed 6-27-11; Am. Ord. 05-23, passed 3-27-23; Am. Ord. 32-23, passed 9-11-23) Penalty, see § 153.999