Subdivision Design and Improvements
Table 406.020-1: Block Arrangement | |||||
|---|---|---|---|---|---|
Neighborhoods (Low Density) | Neighborhoods (Mixed, Moderate, Or High Density) | Neighborhood Centers, Gathering Places, Business Hubs, And Downtown | Distinct Destinations | Corridor Reinvestment, Future Growth | |
Block Length | 500 feet minimum 1,320 feet maximum | 300 feet minimum 800 feet maximum | 250 feet minimum 600 feet maximum | 250 feet minimum 1000 feet maximum | Dependent on specific context and development plans |
Area | 5 to 10 acres | 3.5 to 7 acres | 2 to 5 acres | 2 to 8 acres | Dependent on specific context and development plans |
Table 407.020-2: Functional Class/Design Types | ||||
|---|---|---|---|---|
Functional Class Design | Natural (NT) | Standard (S) | Activity (A) | Neighborhood (NH) |
Arterial (A) | ||||
Collector (C) (minor or major) | ||||
Local (L) | ||||
Neighborhood Street. The Neighborhood street design type is appropriate where an improve neighborhood design amenity, increased walkability, or a more compact and mixed-density residential pattern is desired. It is characterized by large street trees, sidewalks, narrow lanes, occasional on-street parking and slow vehicle speeds. |
Natural Street. The Natural street design type is appropriate for areas where any natural features exist and are emphasized as an urban design amenity, and particularly to implement the Image Streets or LINC System on the City Image Framework of the Comprehensive Plan. It is characterized by narrower roadways with slow to moderate speeds and larger, informal and natural landscape edges. |
Activity Street. The activity street design type is appropriate for areas where a high degree of pedestrian activity is desired and particularly to implement the Pedestrian Priority Areas in the Connections Framework of the Comprehensive Plan. It is characterized by narrow lanes, slow speeds, on-street parking, and a large, well designed pedestrian amenity zone to support businesses and economic activity along these blocks. |
Table 406.030-2: Open Space Systems — Amount | |
|---|---|
RE | N/A |
SF-12, SF-7, N-L | 10% |
TF, MF-10, MF-14, MF-18, N-O | 15% |
NB, SO | 8% |
GB, RC | 12% |
LI, HI | N/A |
APD-O | 15%, unless modified by development plan that equally or better meets the intent of the open space system standard and the APD-O District |
PR-O | 15%, unless modified by development plan that equally or better meets the intent of the open space system standard and the PR-O District |
Preserve | |
|---|---|
The size, location, and design of a preserve shall be dependent on the planning context, the presence of natural amenities and ecological functions worthy of protection, and the ability of the designated area to provide significant continuity with nearby natural features. However in general these areas should provide the opportunity of at least 10 acres of contiguous preserved area; and ideally up to 50 or more acres. Service Area N/A Level Of Service 10 acres per 1,000 people | |
Design Elements Preserves include any area of existing or restored natural areas such as riparian corridors, flood hazard areas, unique geological formations, important habitats, significant plant types or substantial groupings of important plant types, wetlands, etc. The goal is to protect the edges to maximize intact areas that provide valuable ecosystem services for development, support preservation goals or enhance the aesthetics and amenities of the area. Location and design should be based on the guidance of Appendix A3 of the Comprehensive Plan, Natural Resources and Open Space Policy Map, and areas capable of expansion through further adjacent preservation efforts may be viewed more favorable. | |
Park Or Greenway | |
|---|---|
Size 2-5 acres (neighborhood) 5-10 acres (community) Service Area 1/4 mile (neighborhood) 1/2 mile (community) Level Of Service 10 acres per 1,000 people | |
Design Elements Parks shall generally be at least 300 feet wide in all directions, except that linear natural features ("greenway") may be designed as a park with portions as narrow as 40 feet, provided it has significant continuity between the natural area and other open space features and preserve significant aesthetic and ecological functions. One large shade tree for every 40 feet of street frontage, plus 3 large shade trees per acre; 5 small shade trees or ornamental trees per acre. Between 30% and 70% of the area should be allocated to structured recreation such as ball fields, playgrounds or sport courts. The remainder of the area should be allocated to ground cover, treed areas, garden, lawns or other landscape amenity. Greenways should include a trail of 8 feet to 12 feet wide may be included to provide connections along bicycle or pedestrian routes and destinations. | |
Pocket Park | |
|---|---|
Size 1/4 to 2 acres Service Area All blocks within 1,320 feet walking distance Level Of Service 10 acres per 1,000 people | |
Design Elements Pocket parks shall generally be at least 50 feet wide in all directions. One large shade tree for every 40 feet of street frontage, plus 1 large shade tree per acre; 3 small shade trees or ornamental trees per acre. Between 30% and 70% of the area should be constructed recreation surfaces such as playgrounds or sport courts. The remainder of the area should be allocated to ground cover, treed areas, garden, lawns or other landscape amenity. | |
Trail | |
|---|---|
Size 20 feet minimum width; Trails shall be located to provide continuity through the area, with existing or likely connections to other supporting facilities and the ability to link important destinations for those on foot or on bicycle. Service Area 1/8 mile Level Of Service 10 acres per 1,000 people | |
Design Elements Trails should include a paved or otherwise dust free stabilized surface at least 8 feet minimum width; 10 feet minimum if shared bike/pedestrian trail. The landscape buffer on each side of the trail should be at least 6 feet minimum. One large shade tree for every 100 feet of trail length; 2 small shade trees or ornamental trees for every 100 feet of trail length. Trails located along rights-of-way may be designed in conjunction with the overall cross-section design of the right-of-way to create the optimal multi-modal design for the street and trail. | |
Green | |
|---|---|
Size 2 to 3 acres Service Area 2,000 feet Level Of Service 5% to 10% of non-right-of-way land area; or 1 to 2 acres per 1,000 people | |
Design Elements Green shall be at least 250 feet wide in all directions and should generally have width: depth proportion between 2:1 and 1:2. Greens should have a public street along at least 2 sides; streets should be designed for multi-modal transportation with direct pedestrian access to the street. Buildings fronting on the green should be designed with frequent entrances and outdoor seating areas to activate the space. One large shade tree for every 25 feet of street frontage; and one small shade tree or ornamental tree for every 2,000 square feet. At least 20% of the area shall be designed for formal gathering such as seating areas and other areas of concentrated amenity that serve as a focal point of the green. At least 50% of the area shall be allocated to ground cover, treed areas or other landscape amenity. | |
Square | |
|---|---|
Size 1 to 2 acres Service Area 1,000 feet Level Of Service 5% to 10% of non-right-of-way land area; or 1 to 2 acres per 1,000 people | |
Design Elements Squares shall be at least 150 feet wide in all directions, and should generally have width: depth proportion between 2:1 and 1:2. Squares should have a public street along all sides and be designed as a focal point for abutting blocks; streets should be designed for multi-modal transportation with direct pedestrian access to the street. One large shade tree for every 40 feet of street frontage; and one small shade tree or ornamental tree for every 2,000 square feet. At least 50% of the area shall be designed for formal gathering such as seating areas and other concentrated amenity. At least 25% of the area shall be allocated to planter beds, seasonal plantings foundation plants, garden, lawns or other landscape amenity. | |
Plaza | |
|---|---|
Size 1/8 to 1 acre Service Area On block or immediately abutting blocks Level Of Service 5% to 10% of non-right-of-way land area; or 1/2 to 1 acre per 1,000 people | |
Design Elements Plazas shall be at least 60 feet wide in all directions, and should generally have width: depth proportion between 2:1 and 1:2. Plazas should have a public street along at least 2 sides; streets should be designed for multi-modal transportation with direct pedestrian access to the street. Plazas should include seating, art, formal landscape and other amenities and ornamentation as a focal point for gathering places. Buildings fronting on the plaza should be designed as street front buildings with frequent windows and entrances to activate the space. One large shade tree for every 40 feet of street frontage; and one small shade tree or ornamental tree for every 2,000 square feet. At least 10% of the area shall be allocated to planter beds, seasonal plantings or foundation plants. | |
Community Garden | |
|---|---|
Size 1/8 to 3 acres Service Area 1,000 feet Level Of Service 5% to 10% of non-right-of-way land area; or 1/2 to 1 acre per 1,000 people | |
Design Elements Community Gardens shall be at least 25 feet wide in all directions. Community gardens should have public access along the streetscape of at least 25. Community gardens should be organized and run by a property management association, non-profit organization or public entity, and be open to people within a defined safe area. Community gardens should be used for crops only and managed through practices that create no adverse effects on the adjacent property, including odors, pests, and maintenance activity. | |
Subdivision Design and Improvements
Table 406.020-1: Block Arrangement | |||||
|---|---|---|---|---|---|
Neighborhoods (Low Density) | Neighborhoods (Mixed, Moderate, Or High Density) | Neighborhood Centers, Gathering Places, Business Hubs, And Downtown | Distinct Destinations | Corridor Reinvestment, Future Growth | |
Block Length | 500 feet minimum 1,320 feet maximum | 300 feet minimum 800 feet maximum | 250 feet minimum 600 feet maximum | 250 feet minimum 1000 feet maximum | Dependent on specific context and development plans |
Area | 5 to 10 acres | 3.5 to 7 acres | 2 to 5 acres | 2 to 8 acres | Dependent on specific context and development plans |
Table 407.020-2: Functional Class/Design Types | ||||
|---|---|---|---|---|
Functional Class Design | Natural (NT) | Standard (S) | Activity (A) | Neighborhood (NH) |
Arterial (A) | ||||
Collector (C) (minor or major) | ||||
Local (L) | ||||
Neighborhood Street. The Neighborhood street design type is appropriate where an improve neighborhood design amenity, increased walkability, or a more compact and mixed-density residential pattern is desired. It is characterized by large street trees, sidewalks, narrow lanes, occasional on-street parking and slow vehicle speeds. |
Natural Street. The Natural street design type is appropriate for areas where any natural features exist and are emphasized as an urban design amenity, and particularly to implement the Image Streets or LINC System on the City Image Framework of the Comprehensive Plan. It is characterized by narrower roadways with slow to moderate speeds and larger, informal and natural landscape edges. |
Activity Street. The activity street design type is appropriate for areas where a high degree of pedestrian activity is desired and particularly to implement the Pedestrian Priority Areas in the Connections Framework of the Comprehensive Plan. It is characterized by narrow lanes, slow speeds, on-street parking, and a large, well designed pedestrian amenity zone to support businesses and economic activity along these blocks. |
Table 406.030-2: Open Space Systems — Amount | |
|---|---|
RE | N/A |
SF-12, SF-7, N-L | 10% |
TF, MF-10, MF-14, MF-18, N-O | 15% |
NB, SO | 8% |
GB, RC | 12% |
LI, HI | N/A |
APD-O | 15%, unless modified by development plan that equally or better meets the intent of the open space system standard and the APD-O District |
PR-O | 15%, unless modified by development plan that equally or better meets the intent of the open space system standard and the PR-O District |
Preserve | |
|---|---|
The size, location, and design of a preserve shall be dependent on the planning context, the presence of natural amenities and ecological functions worthy of protection, and the ability of the designated area to provide significant continuity with nearby natural features. However in general these areas should provide the opportunity of at least 10 acres of contiguous preserved area; and ideally up to 50 or more acres. Service Area N/A Level Of Service 10 acres per 1,000 people | |
Design Elements Preserves include any area of existing or restored natural areas such as riparian corridors, flood hazard areas, unique geological formations, important habitats, significant plant types or substantial groupings of important plant types, wetlands, etc. The goal is to protect the edges to maximize intact areas that provide valuable ecosystem services for development, support preservation goals or enhance the aesthetics and amenities of the area. Location and design should be based on the guidance of Appendix A3 of the Comprehensive Plan, Natural Resources and Open Space Policy Map, and areas capable of expansion through further adjacent preservation efforts may be viewed more favorable. | |
Park Or Greenway | |
|---|---|
Size 2-5 acres (neighborhood) 5-10 acres (community) Service Area 1/4 mile (neighborhood) 1/2 mile (community) Level Of Service 10 acres per 1,000 people | |
Design Elements Parks shall generally be at least 300 feet wide in all directions, except that linear natural features ("greenway") may be designed as a park with portions as narrow as 40 feet, provided it has significant continuity between the natural area and other open space features and preserve significant aesthetic and ecological functions. One large shade tree for every 40 feet of street frontage, plus 3 large shade trees per acre; 5 small shade trees or ornamental trees per acre. Between 30% and 70% of the area should be allocated to structured recreation such as ball fields, playgrounds or sport courts. The remainder of the area should be allocated to ground cover, treed areas, garden, lawns or other landscape amenity. Greenways should include a trail of 8 feet to 12 feet wide may be included to provide connections along bicycle or pedestrian routes and destinations. | |
Pocket Park | |
|---|---|
Size 1/4 to 2 acres Service Area All blocks within 1,320 feet walking distance Level Of Service 10 acres per 1,000 people | |
Design Elements Pocket parks shall generally be at least 50 feet wide in all directions. One large shade tree for every 40 feet of street frontage, plus 1 large shade tree per acre; 3 small shade trees or ornamental trees per acre. Between 30% and 70% of the area should be constructed recreation surfaces such as playgrounds or sport courts. The remainder of the area should be allocated to ground cover, treed areas, garden, lawns or other landscape amenity. | |
Trail | |
|---|---|
Size 20 feet minimum width; Trails shall be located to provide continuity through the area, with existing or likely connections to other supporting facilities and the ability to link important destinations for those on foot or on bicycle. Service Area 1/8 mile Level Of Service 10 acres per 1,000 people | |
Design Elements Trails should include a paved or otherwise dust free stabilized surface at least 8 feet minimum width; 10 feet minimum if shared bike/pedestrian trail. The landscape buffer on each side of the trail should be at least 6 feet minimum. One large shade tree for every 100 feet of trail length; 2 small shade trees or ornamental trees for every 100 feet of trail length. Trails located along rights-of-way may be designed in conjunction with the overall cross-section design of the right-of-way to create the optimal multi-modal design for the street and trail. | |
Green | |
|---|---|
Size 2 to 3 acres Service Area 2,000 feet Level Of Service 5% to 10% of non-right-of-way land area; or 1 to 2 acres per 1,000 people | |
Design Elements Green shall be at least 250 feet wide in all directions and should generally have width: depth proportion between 2:1 and 1:2. Greens should have a public street along at least 2 sides; streets should be designed for multi-modal transportation with direct pedestrian access to the street. Buildings fronting on the green should be designed with frequent entrances and outdoor seating areas to activate the space. One large shade tree for every 25 feet of street frontage; and one small shade tree or ornamental tree for every 2,000 square feet. At least 20% of the area shall be designed for formal gathering such as seating areas and other areas of concentrated amenity that serve as a focal point of the green. At least 50% of the area shall be allocated to ground cover, treed areas or other landscape amenity. | |
Square | |
|---|---|
Size 1 to 2 acres Service Area 1,000 feet Level Of Service 5% to 10% of non-right-of-way land area; or 1 to 2 acres per 1,000 people | |
Design Elements Squares shall be at least 150 feet wide in all directions, and should generally have width: depth proportion between 2:1 and 1:2. Squares should have a public street along all sides and be designed as a focal point for abutting blocks; streets should be designed for multi-modal transportation with direct pedestrian access to the street. One large shade tree for every 40 feet of street frontage; and one small shade tree or ornamental tree for every 2,000 square feet. At least 50% of the area shall be designed for formal gathering such as seating areas and other concentrated amenity. At least 25% of the area shall be allocated to planter beds, seasonal plantings foundation plants, garden, lawns or other landscape amenity. | |
Plaza | |
|---|---|
Size 1/8 to 1 acre Service Area On block or immediately abutting blocks Level Of Service 5% to 10% of non-right-of-way land area; or 1/2 to 1 acre per 1,000 people | |
Design Elements Plazas shall be at least 60 feet wide in all directions, and should generally have width: depth proportion between 2:1 and 1:2. Plazas should have a public street along at least 2 sides; streets should be designed for multi-modal transportation with direct pedestrian access to the street. Plazas should include seating, art, formal landscape and other amenities and ornamentation as a focal point for gathering places. Buildings fronting on the plaza should be designed as street front buildings with frequent windows and entrances to activate the space. One large shade tree for every 40 feet of street frontage; and one small shade tree or ornamental tree for every 2,000 square feet. At least 10% of the area shall be allocated to planter beds, seasonal plantings or foundation plants. | |
Community Garden | |
|---|---|
Size 1/8 to 3 acres Service Area 1,000 feet Level Of Service 5% to 10% of non-right-of-way land area; or 1/2 to 1 acre per 1,000 people | |
Design Elements Community Gardens shall be at least 25 feet wide in all directions. Community gardens should have public access along the streetscape of at least 25. Community gardens should be organized and run by a property management association, non-profit organization or public entity, and be open to people within a defined safe area. Community gardens should be used for crops only and managed through practices that create no adverse effects on the adjacent property, including odors, pests, and maintenance activity. | |