EVALUATION OF COMMUNITY DEVELOPMENT TYPES

The eight community development types and respective case studies examined in the first phase of this study exhibit, to varying degrees, principles for sustainable community design. The community development types are defined by patterns generated over historic periods and in response to changes in design, transportation technology, policy, or society. At least two case studies were examined for each of the community development types, typically one in Florida and one located elsewhere in the United States. The types and case studies are:

1. Pre-20th Century Urban Centers.
Ybor City, Tampa, Florida
Back Bay, Boston, Massachusetts

2. Pre-World War II Suburbs
Winter Park, Florida
Chestnut Hill, Philadelphia, Pennsylvania

3. New Towns
Coral Gables, Florida
Las Colinas, Texas

4. Planned Unit Developments
Sun City Center, Florida
Twin Rivers, East Windsor, New Jersey

5. Mixed Use Activity Centers
Mizuer Park, Boca Raton, Florida
Crocker Center, Boca Raton, Florida
Lenox, Atlanta, Georgia

6. Neo-Traditional Town Planning
Seaside, Florida
Kentlands, Gaithersburg, Maryland

7. Urban Service Areas / Urban Growth Areas
Orange County, Florida
Portland, Oregon

8. Sprawl
Dale Mabry Hwy, Hillsborough County, Florida
Tampa Palms, Hillsborough County, Florida
Lutz, Florida



1. Pre-20th Century Urban Centers

Case studies examined for Pre-20th Century Urban Centers exhibit all principles identified for sustainable community design, due in large part to the fact that they were developed prior to automobile transportation and have been redeveloped over time.


Ybor City, Tampa, Florida

Ybor City was created as a company town, ~n which all of the daily activities and needs of the residents were provided. Its early development occurred as neighborhoods surrounding cigar factories. A commercial main street supported the community, and civic uses were located along or near the main street. Ybor City was laid out with a grid of streets, which provided easy pedestrian access between the residential, manufacturing, commercial, and civic uses. The community's boundaries were defined by undeveloped land

In the years following the Great Depression, Ybor City lost industry and population. Urban renewal activities in the 1970s cleared blocks of Ybor's housing and commercial buildings. These vacant blocks are gradually being redeveloped with a range of residential and commercial functions. While Ybor City today is viewed as an arts and entertainment district within the City of Tampa, a focus on new residential development would enhance its sustainable design features.


Back Bay, Boston, Massachusetts

Back Bay, designed as a speculative residential and cultural district in the mid-1800s, functions today as a dense, mixed-use urban district. The original grid block system and mid-rise building pattern continues to provide a fine grain mix of uses within walking distance of each other. While residents may travel throughout the metropolitan area for daily activities such as work and shopping, these uses can also be found within Back Bay. Alternative transportation modes are proximate to all parts of Back Bay. including subway, bus, automobile, bicycle and pedestrian.

Neighborhoods were designed for pedestrian and carriage movement. Uses were mixed within blocks and often within buildings. Redevelopment activities of the Back Bay have increased densities and strengthened the diversity of uses, as former single-family townhouses were converted into apartments, offices, and retail uses. In nearly all aspects, Back Bay can be regarded as an excellent example of a sustainable urban community.


2. Pre-World War II Suburbs

Case studies of Pre-World War II Suburbs reveal a reduction in densities and increase in area when compared with Pre-20th Century Urban Centers. The Suburb cases were linked to a metropolitan center by rail, as well as by roadway. Streetcars served a primary role in transportation when these case studies were developed; today, the automobile is the primary vehicle. Several sustainable community design principles are apparent in these case studies, however.


Winter Park, Florida

Winter Park was founded as a resort community in the late 1800s. Over time, it matured into a year-round community with a thriving commercial district, private college, and rail connection to nearby Orlando. The original plan for Winter Park defined the grid street pattern, commercial main street fronting a central park, as well as residential and civic properties. Like a small town, the uses tend to be segregated as districts, although the area allowed pedestrian access between the commercial center and neighborhoods. While this historic community pattern is still apparent, post-World War II commercial development along the western edge of Winter Park eliminates its former boundaries. Regarded today as an attractive suburb to Orlando, Winter Park has little vacant land, and its historic center and neighborhoods are undergoing selective infill and redevelopment at increased densities


Chestnut Hill, Philadelphia, Pennsylvania

While originally a rural village, Chestnut Hill blossomed as a railroad suburb of Philadelphia in the mid-1800s. One family developed the residential neighborhoods and civic amenities which attracted upper middle class families from the congestion and pollution of Philadelphia. An informal grid pattern links the residential neighborhoods with civic and commercial uses located at rail stations. A primary commercial district grew along Germantown Avenue, the route connecting Chestnut Hill with Philadelphia. The boundaries of this suburban community have remained intact along three sides, defined by an open space system of the Wissahickon Valley and Cresheim Creek. The fourth side of Chestnut Hill is currently contiguous with other suburban development. These surrounding developments have caused the roadways of Chestnut Hill to suffer from increased automobile congestion. However, public transit, via trains, buses, and trolleys continue to link the various parts of the community and the larger metropolitan area. Since the 1950s, the community has worked to improve the pedestrian environment.


3. New Towns (under construction)


4. Planned Unit Developments

Planned Unit Developments were conceived as an alternative to postWorld War II sprawl through coordinated mixed use land development. The approved plan for the development determines the density and location of uses. As the range of uses and size of development varies greatly among Planned Unit Developments, they must be reviewed individually with regards to sustainable community design principles.


Sun City Center, Florida

Sun City Center was envisioned as a self-contained retirement community in the 1 960s, and functions as such today. Residential districts are organized along winding streets and golf course fairways. A commercial area fronts onto a state highway which bisects the community, and recreation centers serve as the replacement for employment. The low density development and discontinuous street pattern preclude pedestrian access to a mix of uses. However, golf carts and bicycles are used extensively by residents for access throughout the community. With the exception of the state highway, this community does not connect with its rural surroundings. In Addition, the fact that the residents of Sun City Center are retired creates a non-typical community structure.


Twin Rivers, East Windsor, New Jersey

Twin Rivers was modeled after the post-World War II new towns of Columbia and Reston, as a fully-functioning community, within commuting distance of New York City and Philadelphia. Four neighborhoods were created, using a "superblock" street pattern which allows uninterrupted pedestrian access between housing, schools, open space, and commercial uses. This pattern, and the mix of residential densities and proximity to other uses, offers viable alternatives to automobile transportation for daily activities. Like Sun City Center, a state highway bisects the community and serves as the frontage for commercial uses. While an express bus service was provided for commuters to New York City, Twin Rivers includes an industrial area as a source of jobs. The community seems to have matured well: in 1990, Twin Rivers received the New Jersey Chapter of the Community Associates Institute "Community of the Year" award.


5. Mixed Use Activity Center

The case used as Mixed Use Activity Centers offer a range of contexts and conditions. Some sustainable community design principles are found, including density, a fine grain mix of uses, and pedestrian accessibility to activities within the centers. However, these developments vary in their contributions to and relationship with surrounding communities.


Mizuer Park, Boca Raton, Florida

A commercial, retail, residential, and civic center, Mizner Park was developed on the site of a former shopping mall as a new 'Main Street" for downtown Boca Raton. With a mix of uses and organization along the central "Plaza Real" it has been profitable since opening in 1991. However, the project does not link with its surroundings. The Main Street stops at the ends of the project, serving as a place rather than a connection. While Mizner Park is well designed for pedestrians, most have to reach the project by auto. Parking structures line Federal Highway, offering few clues about the nature of the place. A bus stop is at a far end of the project; it is not well-connected to the Plaza.


Crocker Center, Boca Raton, Florida

Crocker Center, built in the 1980s, is located on the I-95 corridor west of central Boca Raton. The project contains a mix of hotel, retail, and office uses centered around a courtyard and surrounded by parking. Although the density and mix of uses create a pedestrian friendly internal environment, the project is isolated from adjacent properties and accessible only by a major roadway, even though its location offers an alternative means of access: Crocker Center abuts the right-of-way of the Tri-Rail commuter rail. While plans are underway for station 1/4 mile north of the development Crocker Center itself could serve as the station site and as an impetus for even further density.


Lenox, Atlanta, Georgia

Unlike Mizner Park and Crocker Center, the Lenox area of Atlanta was developed incrementally by multiple developers. In an affluent suburb of Atlanta, a regional shopping mall built in the late l950's served as the hub for subsequent office and retail development. With each development designed for automobile access, traffic congestion and parking problems followed. In 1975, Atlanta identified Lenox as a "high intensity mixed use station" for its MARTA rail line. The provision of a rail station at Lenox, with the lease of air rights for additional development, brought increased density and mix of uses. Additional commitments to improving the pedestrian environment are creating an even more successful center for this area.



6. Neo-Traditional Town Planning

Neo-Traditional Town Planning draws from the design and functions of pre-automobile communities. This approach has been promoted in the USA primarily by architects Andres Duany and Elizabeth PlaterZyberk, and Peter Calthorpe. Like its nineteenth century models, this community type exemplifies sustainable design principles. Despite recent acclaim, however, few completed examples exist. Two projects planned by Duany and Plater-Zyberk served as the cases for this type: Seaside, Florida, and Kentlands, in Gaithersburg, Maryland.


Seaside, Florida

Seaside is located on the Gulf Coast of the Florida Panhandle, west of the resort-lined beaches of Panama City. As the first built example of Neo-Traditional Town Planning principles, it has become more a tourist attraction than a community. Duany and Plater-Zyberk planned this 80 acre development as a small town, with residences surrounding a commercial and civic center. The residential areas link to each other and the center by a radial grid street pattern. This pattern includes a hierarchy of street widths and types and creates a pleasant walking environment.

While the project exhibits density, mix of uses, and non-auto accessibility to daily uses, Seaside's location, size, and context preclude it from being a community. The development is accessible only by private automobile. As an isolated 80 acre enclave, there are few opportunities for local employment or alternatives in shopping or recreation. The success of Seaside lies in its beach-front location, its highly publicized planners and planning approach, and hence, its uniqueness.


Kentlands, Gaithersburg, Maryland

Located in metropolitan Washington, D.C., Kentlands was designed in the 1980s as a new community offering "small-town charm." While street network and residential areas have been completed, the civic and commercial uses remain to be developed. Kentlands is bounded by arterial roadways on three sides, and currently is accessible only by auto. Kentlands contains five neighborhoods, each arranged with a grid pattern of streets and focused on a civic or commercial center. A path and street system links the residences with these centers, open space, and each other.

Despite its internal connectivity, density and mix of uses, Kentlands does not function as a complete community. Employment opportunities are limited. Non-employment related activities, however, are provided and are accessible on foot.


7. Urban Service Areas / Urban Growth Areas

Unlike the other development types discussed, Urban Service Areas and Urban Growth Areas are planning tools which affect the location of non-rural development and allocation of public infrastructure. While some principles of sustainable community design are not specifically addressed by these two mechanisms, both affect the development of rural or agricultural land.

As suggested by its name, an Urban Service Area is the area which receives urban services such as sewer and water. Jurisdictions designate the boundaries of Urban Service Areas as a means for phasing capital improvements, given the location and density of allowed and existing development. The designation of Urban Growth Areas, however, articulates where urban-level densities and use intensities can occur. The boundaries of an Urban Growth Area are determined by population forecasts, such that growth can be accommodated over a specified period.


Orange County, Florida

Given its rapid growth since the 1950s, Orange County adopted an Urban Service Area as part of its 1980 Comprehensive Plan. The Urban Service Area was designated for providing services for an area to accommodate anticipated growth over the next 15 years. Thus, the boundary will continue to expand as development occurs within the Urban Service Area.

The rate of expansion is affected by the type and rate of growth. Policies in the 1990 update of the Plan included provisions for more integrated and efficient development patterns via activity centers, urban villages, and traditional neighborhood developments. Additionally, urban infill and redevelopment projects were encouraged. However, large Developments of Regional Impact (DRIB) have been proposed just outside the designated Urban Service Area, and the boundaries were expanded. Given this pattern, a planner for Orange County predicts that the Urban Service Area will encompass the entire county by the next 50 years.


Portland, Oregon

In response to rapid suburban growth and loss of agricultural land and forests, the state of Oregon passed legislation in 1973 requiring all incorporated cities to designate urban growth boundaries. In metropolitan Portland, 26 cities formed an elected regional government, METRO, to administer the designation of the urban growth boundary.

The area within the urban growth boundary was deemed sufficient for growth through the year 2000, with an additional 15.8% added as a "market factor".

Although the urban growth boundary preserved rural land outside its limits, low-density suburban development continued within the urban growth area. In 1990, METRO initiated a planning process to identify desired patterns of growth. Additionally, a proposed freeway bypass, much of which ran outside the urban growth area, generated an alternative proposal by 1000 Friends of Oregon for rail transit with dense, mixed use development at station areas. Architect Peter Calthorpe, recognized as an advocate for "neo-traditional planning", consulted on the alternative's development patterns. Another initiative which may affect the pattern of growth within the urban growth boundary is the state's "Transportation Planning Rule" adopted in 1991. This rule requires metropolitan Portland to reduce vehicle miles traveled by 10% over the next 20 years and 20% over the next 30 years. Higher density, more mixed-use development patterns can support alternative forms of transportation and reduce vehicular use.


8. Sprawl

Sprawl exemplifies the antithesis of all sustainable community design principles. As defined by the Florida Department of Community Affairs, sprawl "refers to the scattered, untimely, poorly planned urban development that occurs in urban fringe and rural areas and frequently invades lands important for environmental and natural resource protection." It is characterized by three forms:

1. vast areas of low-density single use development (typically single family residences);
2. continuous strip retail development; and
3. leapfrog development, occurring beyond but not independent of an urban area, such that the space between becomes developed as well.

The case studies examined for this development type address each form of sprawl


Lutz, Hillsborough County, Florida

The origins of Lutz, situated approximately 10 miles north of downtown Tampa, draw from the turn-of-the-century expansion of railroad lines throughout Florida. In 1907, a rail line and land development company entered a sparsely settled logging area to create the community of Lutz. This community grew steadily with the development of a U.S. highway through its center. After World War II, however, the farmland and forests separating Lutz from Tampa disappeared as single family residential developments cropped up. While remnants of the historic town grid remain, the surrounding area consists of cur-de-sacs. The incremental and disconnected residential developments have led to increased traffic congestion on through roads, a degradation of water quality in the many lakes surrounding Lutz, and a loss of habitat and farmland. Long-time residents are frustrated by these impacts, as well as plans for widening roadways to accommodate future traffic.


Tampa Palms, Florida

Planned as a "community of distinctive quality and elegance," Tampa Palms is sited between I-275 and I-75 approximately 12 miles north of downtown Tampa. Tampa Palms illustrates the concept of leapfrog development with its reliance on metropolitan Tampa for employment, yet its location a mile beyond the previous city limits of Tampa. During the course of its development, the City of Tampa annexed Tampa Palms. The once-rural area in between Tampa Palms and the City limits has developed with low-density residential projects and commercial strips

While billed as a community, Tampa Palms functions much like Las Colinas, as a series of disconnected, single-use pods. The 5,400 acre project contains residences, retail space, office space, a school, and recreational and conservation space, yet each use is a discrete district Likewise, residences are separated according to price range. These separations occur by a discontinuous road pattern, in which residential areas consist of a series of cur-de-sacs, as well as by walls and dedicated open space

Tampa Palms demonstrates an undesired ramification of creating distinct boundaries between communities; that of isolation. Access is gained to the development only by automobile, and mass transit does not serve the area nor the development. With only one set of entries into the community from the state road which bisects it, Tampa Palms offers its residents and visitors no alternative approaches. Like the discontinuous residential development in Lutz, Tampa Palm's vehicular traffic is funneled onto one road. Additionally, the circulation pattern and scale of the development precludes viable options to the automobile for daily activities within the community. Each residential cul-de-sac feeds onto a major roadway through the development, on which are sited other uses. Despite the provision of separated pedestrian paths, the distances between uses or neighborhoods are great


Dale Mabry Highway, Hillsborough County, Florida


Dale Mabry Highway, originally built as a military transportation route between air fields during World War II, has been cited in the Wall Street Journal as a "blue ribbon contender" if "prizes were given for the ugliest urban road in America". Dale Mabry Highway extends 21.6 miles through suburban Tampa, and offers snapshots of commercial strip development since 1940. The southernmost portion of the highway is four lanes wide, fronted by small parcels of retail businesses and continuous curb cuts. The age of the commercial development generally becomes more recent as one moves north. The travel speed and number of lanes increase, as well as the retail frontage, depth, and building setback. At the northern edge of the commercial strip, there are eight lanes of traffic moving 55 miles per hour, and billboard sized signs with vast parking lots front the highway. The retail uses along Dale Mabry do not connect with residential or other uses behind them; access is focused only on the automobile dominated highway.














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