§ 12-9-1 DISTRICT LOT REGULATIONS.
   It shall be unlawful to erect or alter any building within the city unless the following minimum lot and yard areas and bulk controls are provided and maintained in connection with such building.
Minimum Lot Requirements By District
District
Area
(sq. ft.)
Width (ft.)
Yard Setback (ft.)
Front
Rear
Side Interior
Side Corner
Minimum Lot Requirements By District
District
Area
(sq. ft.)
Width (ft.)
Yard Setback (ft.)
Front
Rear
Side Interior
Side Corner
A
   One-family dwellings
1 acre 1
150
30
35
15
25
R-1
   One-family dwellings
10,000 4
75 4
30
35 5
10 6
15
   Two-family dwellings
Varies 7
90
30
35 5
10 6
15
   Multiple-family dwellings
Varies 7
100
30
35 5
12
15
   Other uses
10,000
90
30
15
15
20
R-2
   One-family dwellings
7,200 4
60 4
30
35 5
7 8
10
   Two-family dwellings
Varies 9
75
30
35 5
7 8
10
   Multiple-family dwellings
Varies 9
90
30
35 5
10
12
   Other uses
8,500
75
30
15
12
15
C-1
   All uses 9
15,000
100
30
20
15
20
C-2
   All uses
2,000
20
None
10
None
None
I
   All uses 9
15,000
100
39
20
12
20
Notes:
1   A lot area of less than 1 acre may be permitted if the owner or developer can show by means of soil percolation tests that a lesser area would be sufficient for the proper functioning of septic tanks, but in no case shall a one-family dwelling be built on a lot less than one-half acre in size
2   Where adjacent structures have front yard setbacks different from those required, the minimum front yard setback shall be the average setback of such structures, but in no case shall the front yard setback be less than 20 feet
3   Buildings over 1.5 stories in height shall require 5 feet for each additional story in addition to the required minimum side yard
4   A one-family dwelling may be erected on a lot having less than the minimum required area and width provided the lot existed by virtue of a recorded plat or deed at the time of passage of this title; however, in no event shall a one-family dwelling be erected on a lot less than 5,000 square feet in area or less than 50 feet in width
5   Detached residential garages shall have a minimum rear yard of 5 feet
6   Interior side yards may be 6 feet on the side where there is an attached garage; detached residential garages may be located within 4 feet of a side lot line provided such garages are located within the required minimum rear yard
7   Ten thousand square feet for one dwelling unit plus 2,700 square feet for each additional efficiency or one bedroom unit, and/or 3,600 square feet for each additional unit containing 2 or more bedrooms
8   Interior side yards may be 4 feet on the side where there is an attached garage; detached residential garages require no side yard provided such garages are located within the required minimum rear yard
9   Ten thousand square feet for one dwelling unit plus 2,200 square feet for each additional efficiency or one-bedroom unit, and/or 2,700 square feet for each additional unit containing 2 or more bedrooms
10   Shimer Square Mixed-Use District: Lot locations and setbacks shall be generally consistent with the Shimer Square Community Campus Redevelopment Plan, dated as of January 2020, prepared by Rock Island Economic Growth Corporation and submitted to the city. Substantial deviations from such plan shall be treated as a special use, requiring approval by the City Council pursuant to § 12-3-6 of this code.
 
(1974 Code, § 9-10-1) (Ord. 501, passed 10-24-1967; Ord. 2020-10-9, passed 10-13-2020)