[Ord. 273, 2/16/1982; as amended by Ord. 282, 5/15/1984]
1. 
Purpose. The R-1A District is to provide for the orderly development of existing and proposed medium-density residential areas with mixed housing types and to exclude those uses not compatible with such development.
2. 
Regulations. In an R-1A District, a building may be erected, altered or used and any lot or premises may be used when in conformance with the conditions of this Chapter and the specific use, area and design regulations of this district.
[Ord. 273, 2/16/1982; as amended by Ord. 279, 10/18/1983; and by Ord. 282, 5/15/1984]
1. 
Uses permitted by right in an R-1A District, the following uses are permitted by right and no other:
A. 
Single-family detached dwellings.
B. 
Twin house single-family semi-detached dwellings.
C. 
Triplex single-family attached dwellings.
D. 
Townhouse single-family attached dwellings.
E. 
Institutional uses limited to the following:
(1) 
Places of worship.
(2) 
Cemeteries.
(3) 
Libraries.
(4) 
Day-care centers/nursery schools.
(5) 
Life-care facilities.
(6) 
Public utilities.
(7) 
Public buildings.
2. 
Accessory Uses. The following accessory uses shall be permitted, provided that they are customarily incidental and subordinate to the uses permitted by right listed above.
A. 
Uses customarily incidental and subordinate to single-family detached and semi-detached dwellings.
B. 
Structures, including swimming pools, fences, walls, greenhouses and sheds, less than 100 square feet in gross area.
C. 
Structures, including private garages, sheds and accessory uses greater than 100 square feet in gross area.
D. 
Home occupations stipulated in §27-603, including professional offices, instructional services, home crafts and family day-care homes. Instructional services involving musical instruments or more than one student at a time are permitted in single-family detached dwellings only.
3. 
Signs. In an R-1A District, a maximum of two signs are permitted per lot as follows:
A. 
One nameplate sign per home occupation.
B. 
One freestanding sign per institutional use.
C. 
One development sign per multiple-housing development project.
D. 
One wall sign per institutional use.
E. 
Temporary signs permitted in Part 12 for residential districts.
F. 
Residential, governmental, public service and other signs permitted in Part 12 for all districts.
[Ord. 273, 2/16/1982; as amended by Ord. 279, 10/18/1983; by Ord. 282, 5/15/1984; by Ord. 318, 7/7/1987; by Ord. 319, 8/4/1987; and by Ord. 435, 9/2/2008]
1. 
Area and design regulations shall be as follows:
A. 
Single-family Detached.
(1) 
Gross density: three dwelling units per acre maximum.
(2) 
Lot area: 10,000 square feet minimum.
(3) 
Lot width (at building setback line): 80 feet minimum.
(4) 
Front yard: 40 feet minimum.
(5) 
Side yard, each: 10 feet minimum.
(6) 
Side yards, aggregate: 30 feet minimum.
(7) 
Rear yard: 40 feet minimum.
(8) 
Building height: 35 feet maximum.
(9) 
Impervious surface ratio (percentage of lot): 30% maximum.
(10) 
Off-street parking spaces: two per dwelling unit minimum.
(11) 
Open space (percentage of site): 7.5% of site area minimum.
B. 
Twin House.
(1) 
Gross density: three dwelling units per acre maximum.
(2) 
Lot area per dwelling unit: 6,250 square feet minimum.
(3) 
Lot width (at building setback line, per unit): 50 feet minimum.
(4) 
Front yard: 40 feet minimum.
(5) 
Side yard, each, per unit: 15 feet minimum.
(6) 
Side yard, aggregate per building: 40 feet minimum.
(7) 
Rear yard: 40 feet minimum.
(8) 
Building height: 35 feet maximum.
(9) 
Impervious surface ratio: 30% maximum.
(10) 
Off-street parking spaces: two per dwelling unit minimum.
(11) 
Open space (percentage of site): 30% of site area minimum.
C. 
Triplex Attached Dwelling Units.
(1) 
Gross density: three dwelling units per acre maximum.
(2) 
Site area: 1.5 acres minimum.
(3) 
Lot area per dwelling unit: 3,000 square feet minimum.
(4) 
Lot width (at building setback line): 33 feet minimum.
(5) 
Building setback line at front and side yards: 25 feet minimum.
(6) 
Building setback line at state highway: 75 feet minimum.
(7) 
Building spacing: 50 feet minimum.
(8) 
Rear yard: 30 feet minimum.
(9) 
Building height: 35 feet maximum.
(10) 
Impervious surface ratio: 25% site/60% lot maximum.
(11) 
Open space (percentage of site): 30% of site area minimum.
(12) 
Off-street parking spaces: two per dwelling unit minimum.
(13) 
Dwelling units per building: three maximum.
D. 
Townhouse.
(1) 
Gross density: three dwelling units per acre maximum.
(2) 
Site area: 1.5 acres minimum.
(3) 
Lot area per dwelling unit: 3,000 square feet minimum.
(4) 
Lot width at building setback line: 22 feet minimum.
(5) 
Building setback line at front and side yards: 25 feet minimum.
(6) 
Building setback line at state highway: 75 feet minimum.
(7) 
Building spacing: 50 feet minimum.
(8) 
Rear yard: 30 feet minimum.
(9) 
Building height: 35 feet maximum.
(10) 
Impervious surface ratio (percentage of lot): 25% site/60% of lot maximum.
(11) 
Open space ratio (percentage of site): 40% minimum.
(12) 
Off-street parking spaces: two per dwelling unit minimum.
(13) 
Dwelling units per building: four maximum.
E. 
Institutional uses listed hereafter shall conform to institutional area and design requirements listed by use in Part 5.
(1) 
Places of worship: see §27-504.
(2) 
Cemeteries: see §27-505.
(3) 
Libraries: see §27-506.
(4) 
Day-care centers/nursery schools: see §27-507.
(5) 
Life-care facilities: see §27-508.
(6) 
Public utilities: see §27-503.
(7) 
Public buildings: see §27-512.
F. 
Accessory Uses. All accessory uses shall be regulated by the standards found in Part 6 listed by use.
(1) 
Accessory uses and structures less than 100 square feet or 1,000 cubic feet shall have their minimum side and rear yard distances reduced to five feet, except as otherwise required. (see §27-601).
(2) 
Accessory uses and structures greater than 100 square feet or 1,000 cubic feet shall conform to the front, side and rear yard requirements of the district. (see §27-601).
(3) 
Swimming pools, fences and walks shall conform to the regulations of §27-602.
(4) 
Home occupations shall conform to the home occupation standards found in §27-603.
G. 
Performance Standards. Provision of the performance standards specified in Parts 7 through 12 shall apply to all permitted uses and accessory uses in this district, including but not limited to the following:
(1) 
General performance standards: Part 7.
(2) 
Buffer and screening requirements for residential developments of five units or more: Part 7J.
(3) 
Floodplain performance standards: Part 8.
(4) 
Dimensional requirements limiting and/or modifying area and design regulations specified herein: Part 9.
(5) 
Parking performance standards shall be off-street and of sufficient quality to provide for parking needs of the user: Part 10 and the following:
(a) 
Parking spaces for single-family detached dwellings shall be provided on its lot.
(b) 
Driveways for twin houses may be located on the property line so that said driveways may be used in common.
(6) 
Open space in residential developments: Part 11.
(7) 
Reduction in front yards building setback line for single-family detached, twin houses, triplexes and townhouses. Front yards (bordering undedicated drives or parking lots) may be reduced as a conditional use up to 50% when thirty-inch-high street buffers are provided (i.e., raised terraces, fences and hedges). Failure to maintain these buffers in good repair shall be a violation of this Zoning Ordinance.
(8) 
Reduction in building spacing for single-family attached dwellings: building spacing for single-family attached dwellings may be reduced as a conditional use from 50 feet to 12 feet, provided that no two walls measured at an angle of 90° from the face of the building are less than 50 feet apart.
H. 
Signs. Provisions of the sign regulations specified in Part 12 shall apply to all permitted signs in this district.
I. 
Nonconformities, administration of the Chapter, interpretation, variances, special exceptions, appeals, amendments and enforcement see Part 14 of this Chapter.
J. 
Lot Areas Shall Be Shown on All Plans. For multi-family dwelling units, the plans shall indicate around each building a lot area equal to the requirement per dwelling unit times the number of units in the building.