CONSERVATION SUBDIVISION DESIGN
Constrained Land | ||||
|---|---|---|---|---|
Resource | Area of Resource (acres) | Protection Factor | Constrained Land (acres) | |
A | Existing utility rights-of-way | X 1.00 | = | |
B | That portion of lands under conservation easement that are restricted from further development | X 1.00 | = | |
C | Floodway (if not mapped by FEMA, assume 50 feet each side of top-of-bank of stream) | X 0.50 | = | |
D | 100-year floodplain (if not mapped by FEMA, area is included in floodway above) | X 0.25 | = | |
E | Wetlands, as determined by a delineation | X 0.50 | = | |
F | Prohibitive steep slopes (25% or greater) | X 0.50 | = | |
G | Precautionary steep slopes (15% to less than 25%) | X 0.10 | = | |
H | Ponds, lakes and streams to the highwater mark | X 0.50 | = | |
I | Constrained land = sum of A through H = | |||
Density and Conservation Open Space | |||||||
|---|---|---|---|---|---|---|---|
Option 1 Basic Density and Basic Conservation (neutral density) | Option 2 Increased Density with Increased Conservation (20% density bonus) (ATA/unit reduced by 20%) | Option 3 Greater Density with Greater Conservation (30% density bonus) (ATA/unit reduced by 30%) | Option 4 Standard Subdivision with no Conservation Open Space | ||||
Density Factor (SF ATA/DU1) | Minimum Conserva-tion Open Space Required2 | Density Factor (SF ATA/DU1 | Minimum Conserva-tion Open Space Required2 | Density Factor (SF ATA/DU1 | Minimum Conserva-tion Open Space Required2 | Minimum Lot Size (SF) | Minimum Conserva-tion Open Space Required3 |
R-1 Residential District - Option 1, Option 2, Option 3 or Option 4 required. | |||||||
R-1, Community Water Supply and/or Community Sewage System | |||||||
30,000 | 45% ATA | 24,000 | 55% ATA | 21,000 | 60% ATA | 60,000 | None |
R-1, No Community Water Supply and No Community Sewage System | |||||||
87,120 | 45% ATA | 69,700 | 55% ATA | 60,980 | 60% ATA | 174,240 | None |
V Village District - the developer may use Option 1, Option 2 or Option 3. In the alternative, a standard subdivision may be developed in accord with the applicable provisions of this chapter. | |||||||
V, Community Water Supply and Community Sewage System | |||||||
15,000 | 45% ATA | 12,000 | 55% ATA | 10,500 | 60% ATA | Not applicable | |
V, Community Water Supply or Community Sewage System | |||||||
25,000 | 45% ATA | 20,000 | 55% ATA | 17,500 | 60% ATA | Not applicable | |
V, No Community Water Supply and No Community Sewage System | |||||||
43,560 | 45% ATA | 34,850 | 55% ATA | 30,490 | 60% ATA | Not applicable | |
RC Recreation Commercial District - the developer may use Option 1, Option 2 or Option 3. In the alternative, a standard subdivision may be developed in accord with the applicable provisions of this chapter. | |||||||
RC, Community Water Supply and/or Community Sewage System | |||||||
20,000 | 45% ATA | 16,000 | 55% ATA | 14,000 | 60% ATA | Not applicable | |
RC, No Community Water Supply and No Community Sewage System | |||||||
43,560 | 45% ATA | 34,850 | 55% ATA | 30,490 | 60% ATA | Not applicable | |
Option 5, hamlets and villages - May be used by the developer in V and RC Districts. See Subpart 13B, community water supply and community sewage system is required. | |||||||
40% density bonus (ATA/unit reduced by 40% | Density Factor (SF ATA/DU1) | Minimum Conservation Open Space Required2 | |||||
V Village District | 9,000 | 70% ATA | |||||
RC Recreation Commercial District | 12,000 | 70% ATA | |||||
1 | SF ATA = square feet of adjusted tract area in § 27-1306.5.C. |
2 | Plus constrained land calculated in § 27-1306.5.B. (See Row I of Table.) |
3 | Minimum conservation open space is permitted but not required. |
Dimensional Standards For Single-Family Detached Dwellings Option 1, Option 2 and Option 3 | ||||
|---|---|---|---|---|
Type of water supply and sewage disposal►►►► | Community Water and Community Sewage | On-lot Water and Community Sewage | Community Water and On-lot Sewage | On-lot Water and On-lot Sewage |
Minimum individual lot area (square feet) | 5,500 | 21,780 | 32,670 | 43,560 |
Minimum lot width at required setback (feet) | 40 | 70 | 85 | 100 |
Minimum street frontage (feet) | 35 | 50 | 50 | 50 |
Maximum depth to width ratio | 5 to 1 | |||
Flag Lots | Permitted in accord with provisions of Chapter 22, Subdivision and Land Development | |||
Setback Regulations | ||||
Minimum front (feet) | 20 | 40 | ||
Minimum rear (feet) | 30 20, where the rear setback adjoins conservation open space | |||
Minimum side (feet) | 5 30, aggregate | 15 | ||
Dimensional Standards For Single-Family Detached Dwellings Option 4 - Standard Subdivision | ||
|---|---|---|
R-1 District Community Water Supply and/or Community Sewage System | R-1 District No Community Water Supply and No Community Sewage System | |
Minimum lot area | 60,000 square feet (1.38 acres) | 174,240 square feet (4.00 acres) |
Maximum depth to width ratio | 5 to 1 | |
Minimum front setback (feet) | 40 | 50 |
Minimum rear setback (feet) | 30 | 40 |
Minimum side setback (feet) | 15 | 25 |
Maximum building height | Principal; 3 stories, but not more than 38 feet Accessory; 1 1/2 stories, but no more than 25 feet | |
Maximum Impervious Cover For Single-Family Dwellings Option 1, Option 2, Option 3 and Option 4 | |
|---|---|
Lot Area (square feet) | Maximum Impervious Coverage |
Less than 10,000 | 50% |
10,000 - 19,999 | 40% |
20,000 - 43,560 | 30% |
More than 43,560 | Reduce limit by 1.5% for each additional acre or fraction thereof, but not reduced to less than 5% |
Dimensional Standards for Two-Family Dwellings, Single-Family Attached Units/Townhouses, Quadruplexes and Multiple-Family Option 1, Option 2 and Option 3 | |
|---|---|
Minimum individual lot area | None |
Separation of principal buildings | 35 feet |
Minimum lot width (if individual lots are provided) | 18 feet (24 feet if a 2-car garage or parking of 2 cars side-by-side is provided in the front) |
Setback from any adjoining internal street, street right-of-way, common parking area or sidewalk | 20 feet |
Dwelling Setbacks | |||
|---|---|---|---|
From | Single-Family (feet) | Two-Family, Single-Family Attached/Townhouses, Quadraplexes (feet) | Other Multifamily (feet) |
External Township or state road rights-of-way | 100 | 150 | 200 |
Other perimeter boundaries of the development tract | 50 | 100 | 150 |
Cropland or pastureland not on the development parcel | 100 | 100 | 100 |
Buildings or barnyards housing livestock not on the development parcel | 300 | 300 | 300 |
Active recreation areas such as courts and play fields not on the development parcel (not including tot lots) | 150 | 150 | 150 |
Dimensional Standards for Two-Family Dwellings and Single-Family Attached Units/Townhouses Units | ||
|---|---|---|
Minimum Lot Area (square feet) | Minimum Lot Width at Required Setback (feet) | |
Single-family detached dwelling | 5,500 | 40 |
Two-family dwellings | 2,750 | 30 |
Single-family attached/townhouses | 1,950 | 18 |
Setback Requirements | |||
|---|---|---|---|
Minimum Front Setback (from street line unless otherwise indicated) (feet) | Minimum Rear Setback (feet) | Minimum Side Setback (feet) | |
Principal dwelling: | |||
Single-family detached | 12 | 30 | Note 1 |
Two-family | 12 | 20 | Note 1 |
Single-family attached/townhouses | 12 | 20 | Note 1 |
Front porch, open, with steps | 6 | NA | Note 1 |
Front porch, enclosed by windows or screens | 10 | NA | Note 1 |
Garage, detached front-loading | 40 | 7 | 5 |
Garage, attached side-loading | 10 | 10 | Note 1 |
Garage, attached front-loading | 10 behind the plane of the front facade of the principal dwelling | 10 | Note 1 |
Garage, rear-loading | NA | 10 from rear service lane or alley | 52 |
1 | Minimum twenty-foot separation between principal dwellings on adjacent lots. |
2 | May be reduced to zero feet for twins and single-family attached/townhouses; i.e., they may be attached. |
Calculation of Transferable Development Rights1 | |
|---|---|
Sending Property Location | Density Factor - 30% Density Bonus (per dwelling unit) |
R-1 Residential or I Industrial | 21,000 square feet of adjusted tract area2 |
V Village | 10,500 square feet of adjusted tract area2 |
RC Recreation Commercial | 14,000 square feet of adjusted tract area2 |
CV Conservation District | 152,460 square feet of required minimum lot area3 |
CONSERVATION SUBDIVISION DESIGN
Constrained Land | ||||
|---|---|---|---|---|
Resource | Area of Resource (acres) | Protection Factor | Constrained Land (acres) | |
A | Existing utility rights-of-way | X 1.00 | = | |
B | That portion of lands under conservation easement that are restricted from further development | X 1.00 | = | |
C | Floodway (if not mapped by FEMA, assume 50 feet each side of top-of-bank of stream) | X 0.50 | = | |
D | 100-year floodplain (if not mapped by FEMA, area is included in floodway above) | X 0.25 | = | |
E | Wetlands, as determined by a delineation | X 0.50 | = | |
F | Prohibitive steep slopes (25% or greater) | X 0.50 | = | |
G | Precautionary steep slopes (15% to less than 25%) | X 0.10 | = | |
H | Ponds, lakes and streams to the highwater mark | X 0.50 | = | |
I | Constrained land = sum of A through H = | |||
Density and Conservation Open Space | |||||||
|---|---|---|---|---|---|---|---|
Option 1 Basic Density and Basic Conservation (neutral density) | Option 2 Increased Density with Increased Conservation (20% density bonus) (ATA/unit reduced by 20%) | Option 3 Greater Density with Greater Conservation (30% density bonus) (ATA/unit reduced by 30%) | Option 4 Standard Subdivision with no Conservation Open Space | ||||
Density Factor (SF ATA/DU1) | Minimum Conserva-tion Open Space Required2 | Density Factor (SF ATA/DU1 | Minimum Conserva-tion Open Space Required2 | Density Factor (SF ATA/DU1 | Minimum Conserva-tion Open Space Required2 | Minimum Lot Size (SF) | Minimum Conserva-tion Open Space Required3 |
R-1 Residential District - Option 1, Option 2, Option 3 or Option 4 required. | |||||||
R-1, Community Water Supply and/or Community Sewage System | |||||||
30,000 | 45% ATA | 24,000 | 55% ATA | 21,000 | 60% ATA | 60,000 | None |
R-1, No Community Water Supply and No Community Sewage System | |||||||
87,120 | 45% ATA | 69,700 | 55% ATA | 60,980 | 60% ATA | 174,240 | None |
V Village District - the developer may use Option 1, Option 2 or Option 3. In the alternative, a standard subdivision may be developed in accord with the applicable provisions of this chapter. | |||||||
V, Community Water Supply and Community Sewage System | |||||||
15,000 | 45% ATA | 12,000 | 55% ATA | 10,500 | 60% ATA | Not applicable | |
V, Community Water Supply or Community Sewage System | |||||||
25,000 | 45% ATA | 20,000 | 55% ATA | 17,500 | 60% ATA | Not applicable | |
V, No Community Water Supply and No Community Sewage System | |||||||
43,560 | 45% ATA | 34,850 | 55% ATA | 30,490 | 60% ATA | Not applicable | |
RC Recreation Commercial District - the developer may use Option 1, Option 2 or Option 3. In the alternative, a standard subdivision may be developed in accord with the applicable provisions of this chapter. | |||||||
RC, Community Water Supply and/or Community Sewage System | |||||||
20,000 | 45% ATA | 16,000 | 55% ATA | 14,000 | 60% ATA | Not applicable | |
RC, No Community Water Supply and No Community Sewage System | |||||||
43,560 | 45% ATA | 34,850 | 55% ATA | 30,490 | 60% ATA | Not applicable | |
Option 5, hamlets and villages - May be used by the developer in V and RC Districts. See Subpart 13B, community water supply and community sewage system is required. | |||||||
40% density bonus (ATA/unit reduced by 40% | Density Factor (SF ATA/DU1) | Minimum Conservation Open Space Required2 | |||||
V Village District | 9,000 | 70% ATA | |||||
RC Recreation Commercial District | 12,000 | 70% ATA | |||||
1 | SF ATA = square feet of adjusted tract area in § 27-1306.5.C. |
2 | Plus constrained land calculated in § 27-1306.5.B. (See Row I of Table.) |
3 | Minimum conservation open space is permitted but not required. |
Dimensional Standards For Single-Family Detached Dwellings Option 1, Option 2 and Option 3 | ||||
|---|---|---|---|---|
Type of water supply and sewage disposal►►►► | Community Water and Community Sewage | On-lot Water and Community Sewage | Community Water and On-lot Sewage | On-lot Water and On-lot Sewage |
Minimum individual lot area (square feet) | 5,500 | 21,780 | 32,670 | 43,560 |
Minimum lot width at required setback (feet) | 40 | 70 | 85 | 100 |
Minimum street frontage (feet) | 35 | 50 | 50 | 50 |
Maximum depth to width ratio | 5 to 1 | |||
Flag Lots | Permitted in accord with provisions of Chapter 22, Subdivision and Land Development | |||
Setback Regulations | ||||
Minimum front (feet) | 20 | 40 | ||
Minimum rear (feet) | 30 20, where the rear setback adjoins conservation open space | |||
Minimum side (feet) | 5 30, aggregate | 15 | ||
Dimensional Standards For Single-Family Detached Dwellings Option 4 - Standard Subdivision | ||
|---|---|---|
R-1 District Community Water Supply and/or Community Sewage System | R-1 District No Community Water Supply and No Community Sewage System | |
Minimum lot area | 60,000 square feet (1.38 acres) | 174,240 square feet (4.00 acres) |
Maximum depth to width ratio | 5 to 1 | |
Minimum front setback (feet) | 40 | 50 |
Minimum rear setback (feet) | 30 | 40 |
Minimum side setback (feet) | 15 | 25 |
Maximum building height | Principal; 3 stories, but not more than 38 feet Accessory; 1 1/2 stories, but no more than 25 feet | |
Maximum Impervious Cover For Single-Family Dwellings Option 1, Option 2, Option 3 and Option 4 | |
|---|---|
Lot Area (square feet) | Maximum Impervious Coverage |
Less than 10,000 | 50% |
10,000 - 19,999 | 40% |
20,000 - 43,560 | 30% |
More than 43,560 | Reduce limit by 1.5% for each additional acre or fraction thereof, but not reduced to less than 5% |
Dimensional Standards for Two-Family Dwellings, Single-Family Attached Units/Townhouses, Quadruplexes and Multiple-Family Option 1, Option 2 and Option 3 | |
|---|---|
Minimum individual lot area | None |
Separation of principal buildings | 35 feet |
Minimum lot width (if individual lots are provided) | 18 feet (24 feet if a 2-car garage or parking of 2 cars side-by-side is provided in the front) |
Setback from any adjoining internal street, street right-of-way, common parking area or sidewalk | 20 feet |
Dwelling Setbacks | |||
|---|---|---|---|
From | Single-Family (feet) | Two-Family, Single-Family Attached/Townhouses, Quadraplexes (feet) | Other Multifamily (feet) |
External Township or state road rights-of-way | 100 | 150 | 200 |
Other perimeter boundaries of the development tract | 50 | 100 | 150 |
Cropland or pastureland not on the development parcel | 100 | 100 | 100 |
Buildings or barnyards housing livestock not on the development parcel | 300 | 300 | 300 |
Active recreation areas such as courts and play fields not on the development parcel (not including tot lots) | 150 | 150 | 150 |
Dimensional Standards for Two-Family Dwellings and Single-Family Attached Units/Townhouses Units | ||
|---|---|---|
Minimum Lot Area (square feet) | Minimum Lot Width at Required Setback (feet) | |
Single-family detached dwelling | 5,500 | 40 |
Two-family dwellings | 2,750 | 30 |
Single-family attached/townhouses | 1,950 | 18 |
Setback Requirements | |||
|---|---|---|---|
Minimum Front Setback (from street line unless otherwise indicated) (feet) | Minimum Rear Setback (feet) | Minimum Side Setback (feet) | |
Principal dwelling: | |||
Single-family detached | 12 | 30 | Note 1 |
Two-family | 12 | 20 | Note 1 |
Single-family attached/townhouses | 12 | 20 | Note 1 |
Front porch, open, with steps | 6 | NA | Note 1 |
Front porch, enclosed by windows or screens | 10 | NA | Note 1 |
Garage, detached front-loading | 40 | 7 | 5 |
Garage, attached side-loading | 10 | 10 | Note 1 |
Garage, attached front-loading | 10 behind the plane of the front facade of the principal dwelling | 10 | Note 1 |
Garage, rear-loading | NA | 10 from rear service lane or alley | 52 |
1 | Minimum twenty-foot separation between principal dwellings on adjacent lots. |
2 | May be reduced to zero feet for twins and single-family attached/townhouses; i.e., they may be attached. |
Calculation of Transferable Development Rights1 | |
|---|---|
Sending Property Location | Density Factor - 30% Density Bonus (per dwelling unit) |
R-1 Residential or I Industrial | 21,000 square feet of adjusted tract area2 |
V Village | 10,500 square feet of adjusted tract area2 |
RC Recreation Commercial | 14,000 square feet of adjusted tract area2 |
CV Conservation District | 152,460 square feet of required minimum lot area3 |