[Zoning Order §5.260, 4-2-2008]
A. 
The following Sections or articles further regulate uses within each zoning district, the requirements of which shall be satisfied as applicable to any proposed development.
B. 
Historic Districts. Applicable standards regulating development in or near historical districts are contained in Article VI, Historical Preservation and Restoration.
C. 
Design Standards. Applicable design standards are contained in Article VII (Development Design Standards).
D. 
Accessory Uses And Uses Permitted With Conditions. Applicable standards regulating accessory uses and uses permitted with conditions are contained in Article VIII (Accessory Uses and Structures) and Article IX (Conditional Use Permits and Uses Permitted with Conditions).
E. 
Conditional Use Permits. For any use listed as a conditional use in Table 5-1, applicable standards regulating uses subject to conditional use permits are contained in Article IX (Conditional Use Permits and Uses Permitted with Conditions).
F. 
Parking Requirements. Applicable standards regulating parking are contained in Article XII (Vehicle Parking and Loading).
G. 
Sign Regulations. Applicable standards regulating signs are contained in Article XIII (Signs).
[Ord. No. 16-0100 §2, 1-4-2016]
H. 
Landscaping, Buffering And Tree Protection. Applicable regulations regulating landscaping, buffering and tree protection are contained in Article XIV (Landscaping, Buffers, Tree Protection and Tree Restoration).
[Zoning Order §5.270, 4-2-2008]
A. 
Uses that are permitted by right or permitted by right but with conditions and uses permitted as a conditional use are shown on Table 5-1.
B. 
In a "PM" District, permitted uses are specified as part of the zoning approval for each development.
C. 
Any use not shown as a permitted use in a zoning district is specifically prohibited in that district. If a use cannot be located on Table 5-1, the use shall be allowed in a zone district that permits a materially similar use. To determine materially similar uses, the Director shall refer to the North American Industry Classification Manual (Executive Office of the President, Office of Management and Budget, 1997 or most recent), hereafter "NAICS". The use shall be considered materially similar if it falls within the same industry group of the NAICS (four (4) digit number given with each use listed).
D. 
Uses that are not permitted in the "PM" District pursuant to Table 5-1 may be allowed by the County Council when it is determined that a better overall development plan can be achieved.
[Zoning Order §5.280, 4-2-2008; Ord. No. 07-30-2008A §§1 — 2(5.280)(Art. 9 §9.590), 7-30-2008; Ord. No. 11-12-2008A §§1 — 2(9.210), 11-12-2008; Resolution 1-14-2010A Exh. A, 1-14-2010; Ord. No. 10-0145 §§1 — 2, 2-18-2010; Ord. No. 16-0100 §2, 1-4-2016; Ord. No. 19-0418, 9-9-2019; Ord. No. 20-0406, 9-29-2020; Ord. No. 23-0177, 3-30-2023]
The Zoning Matrix Table, Table 5-1, follows:[1]
[1]
Editor's Note: The Zoning Matrix Table is also included as a PDF attachment to Chapter 400 in the online version of the Jefferson County Code (eCode360®).
[Zoning Order §5.290, 4-2-2008; Ord. No. 07-30-2008A §§1 — 2(5.290), 7-30-2008; Ord. No. 16-0100 §2, 1-4-2016]
Every property upon which a principal use may be located shall meet or exceed the following requirements for its respective zoning district:
Table 5-2. Density, Minimum Lot Sizes, Lot Width
Zoning District
Maximum Density*
Minimum Lot Size
(per unit)
Minimum Lot Width Major Streets**
Minimum Lot Width Other Streets
"RA-5"
1 unit/5 acres
5 acres
150 feet
50 feet
"LR-2"
1 unit/2 acres
2 acres
150 feet
50 feet
"R-40"
1 unit/1 acre
40,000 sf
50 feet
50 feet
"R-20"
2 units/acre
20,000 sf
50 feet
50 feet
"R-10"
4 units/acre
10,000 sf
50 feet
50 feet
"R-7"
5 units/acre
7,000 sf
50 feet
50 feet
"PR-1"
6 units/acre
AP
AP
AP
"PR-2"
18 units/acre MF
AP
AP
AP
"NC-1"
Max. 0.4 FAR
5,000 sf
70 feet
50 feet
"CC-2"
Max. 0.55 FAR
20,000 sf
115 feet
100 feet
"PC"
Max. 0.55 FAR
NA
AP
AP
"PB"
Max. 0.65 FAR
20,000 sf
AP
AP
"NPI"
Max. 0.65 FAR
20,000 sf
115
100
"PI"
Max. 1.0 FAR
AP
AP
AP
"PM"
Densities and lot sizes established as part of zoning approval for each development
AP
AP
AP
*
FAR — floor area ratio; ratio of building square footage to lot square footage.
**
Major streets include interstates, arterials and collectors (major and minor), local County roads and proposed 4-lane streets
NA
Not applicable
AP
Per approved plan
sf
Square feet
MF
Multi-family
Lot widths and setbacks may be reduced if open space conservation and density design standards are met. These are found in Article VII.
[Zoning Order §5.300, 4-2-2008; Ord. No. 07-30-2008A §§1 — 2(5.300), 7-30-2008; Ord. No. 11-12-2008A §§1 — 2(5.300), 11-12-2008; Resolution 1-14-2010A Exh. A, 1-14-2010; Ord. No. 10-0145 §§1 — 2, 2-18-2010; Ord. No. 16-0100 §2, 1-4-2016]
All buildings on a lot shall be set back from the street right-of-way lines (property lines) or the edge of the access easement, not less than the distances shown in Table 5-3. The measurement shall be taken at the right-of-way line or the edge of an access easement, whichever is more restrictive. Note: minimum distance between detached buildings is dependent upon the International Fire Code.
Table 5-3. Minimum Building Setbacks (as measured from the foundation wall)
Zoning District
Front Yard*
Side Yard++
Rear Yard
Major Street**
County-maintained Streets
All Other Streets
"RA-5", "LR-2"
100 feet or as established by existing homes on the same side of street
65 feet or as established by existing homes on the same side of street
25 feet or as established by existing homes on the same side of street
20 feet
50 feet
"R-40"
70 feet or as established by existing homes on the same side of street
50 feet or as established by existing homes on the same side of street
25 feet or as established by existing homes on the same side of street
10 feet
50 feet
"R-20", "R-10", "R-7"
50 feet
35 feet
25 feet
6 feet
30 feet
"PR-1"
35 feet
35 feet
25 feet
6 feet
30 feet
"PR-2"
35 feet
35 feet
15 feet
6 feet
10 feet
"NC-1"
20 feet
5 feet
20 feet
"CC-2"
20 feet
10 feet
20 feet
"PC"
20 feet
20 feet
15 feet
15 feet
20 feet
"PB"
20 feet
15 feet, 10 feet for interior lot lines
20 feet
"NPI"
20 feet
15 feet, 10 feet for interior lot lines
30 feet
"PI"
20 feet
20 feet
60 feet
"PM"
Setbacks established as part of zoning approval for each planned development
*
Front yard setback may be reduced by 5 feet if garage is accessed from alley. Corner lots shall have 2 front yard setbacks and 2 side yard setbacks.
**
Major streets include interstates, arterials and collectors (major and minor) and proposed 4-lane streets.
++
Not applicable for town houses, except for end units.
AP
Per approved plan
[Zoning Order §5.310, 4-2-2008; Ord. No. 16-0100 §2, 1-4-2016; Ord. No. 16-0100 §2, 1-4-2016]
The maximum height of all structures in each zoning district (except as provided in Section 400.1690) shall be as follows:
Table 5-4. Maximum Structure Heights
Zoning District
Maximum Structure Height (feet)
"RA-5", "LR-2"
40
"R-40", "R-20", "R-10", "R-7"
40
"PR-1"
40
"PR-2"
50
"NC-1"
40
"CC-2"
50
"PC"
70
"PB"
70
"NPI"
70
"PI"
50
"PM"
Height established as part of zoning approval for each planned development
[Zoning Order §5.320, 4-2-2008]
A. 
Height.
1. 
Exemptions. The following are exempt from the district height standards:
a. 
In "RA-5" Districts, agricultural buildings such as, but not limited to, barns, silos, windmills, grain elevators and other farm structures, but not including dwellings.
b. 
Cooling towers, gas holders or other industrial structures, where required as part of the manufacturing process.
c. 
Public water storage tanks.
2. 
Additional regulations. The regulations and requirements as to height of buildings and area of lots that may be occupied by buildings, yards and other regulations and requirements in the foregoing Sections of this Chapter shall be subject to the following exceptions and additional regulations:
a. 
In any district, public or semi-public buildings, such as hospitals, hotels, churches, sanitariums or schools, either public or private, where permitted, may be erected to a height not exceeding seventy-five (75) feet, provided that such buildings shall have yards the depth and width of which shall be increased one (1) foot on all sides for each additional foot that the buildings exceed the specified height limit, as established by the regulations of the district in which the buildings are situated.
b. 
Parapet walls and false mansards shall not extend more than six (6) feet above the height limit. Flagpoles, chimneys, cooling towers, electric display signs, elevator bulkheads, penthouses, finials, gas tanks, grain elevators, stacks, storage towers, radio, television or microwave towers, ornamental towers, monuments, cupolas, domes, spires, standpipes and necessary mechanical appurtenances may be erected to a height in accordance with existing or hereafter adopted County orders, ordinances or resolutions.
B. 
Yard Exceptions And Additional Regulations.
1. 
Every part of a required yard or court shall be open from its lowest point to the sky unobstructed, except for the ordinary projections of sills, belt courses, canopies, cornices, chimneys, buttresses, ornamental features and eaves, not more than half the width of the yard but not more than six (6) feet into a required rear yard.
2. 
An open fire escape may project into a required side yard not more than half the width of the yard, but not more than four (4) feet. Fire escapes and solid floored balconies may project not more than six (6) feet into a required rear yard.
3. 
In computing the depth of a rear yard for any building where the yard abuts an alley, one-half (½) of the alley may be assumed to be a portion of the rear yard.
4. 
Condominium ownership shall not constitute violation of the lot and yard requirements of this Chapter.
5. 
Irregular lots. Only within districts "R-20", "R-10", "R-7", "PR-1" and "PR-2", lots that are irregular in shape, i.e., the lot dimensions are such that it would be difficult to place a home within the building envelope established by the required setbacks (as determined by the Director), may be averaged. Examples of such lots may include:
a. 
Lots that get significantly narrower from front to back;
b. 
Lots where side lot lines are not equal in length thereby producing an odd shaped lot;
c. 
Lots referred to as "flag" lots that have a very narrow access and then open into normal size and shaped lots may utilize the averaging only if the resulting area beyond the narrow access meets one (1) of the other criteria as mentioned above.
To determine the dimension allowed for the rear yard, each side of the existing or proposed structure shall be extended in a straight line to its point of intersection with the property line. One (1) additional measurement shall be included in the calculation and shall be determined by drawing a perpendicular line from the center of the structure to the property line. An average of these three (3) measurements shall equal a minimum of thirty (30) feet in "R-20", "R-10" and "R-7" and twenty (20) feet in "PR-1", "PR-2". However, the nearest point of the structure shall be at least ten (10) feet from the rear lot line.
6. 
Corner lots in Districts "R-20", "R-10", "R-7", "PR-1" and "PR-2". (See Table 5-3.)
a. 
On corner lots, there shall be a front yard setback along each fronting street and a side yard setback adjacent to each interior lot.
b. 
On corner lots where adjacent interior lots have been platted fronting the street, the required setback shall be either equal to the front yard setback of the adjacent interior lot or may be reduced by not more than five (5) feet.
7. 
Homes angled on corner lots. In "R-20", "R-10", "R-7", "PR-1" and "PR-2" Districts where a home is to be angled on a corner lot, the two (2) front yard setbacks may both be reduced by five (5) feet according to its respective district requirement. The other lot lines shall maintain a minimum setback of six (6) feet. (See Table 5-3.) These reductions to front yard setbacks shall not apply to lots on expressways, arterials and any four-lane streets.