An urban growth boundary (UGB) is a regional boundary, set in an attempt to control urban sprawl by, in its simplest form, mandating that the area inside the boundary be used for urban development and the area outside be preserved in its natural state or used for agriculture. Legislating for an urban growth boundary is one way, among many others, of managing the major challenges posed by unplanned urban growth and the encroachment of cities upon agricultural and rural land. [1]
An urban growth boundary circumscribes an entire urbanized area and is used by local governments as a guide to zoning and land use decisions, and by utilities and other infrastructure providers to improve efficiency through effective long term planning (e.g. optimising sewerage catchments, school districts, etc.).
If the area affected by the boundary includes multiple jurisdictions a special urban planning agency may be created by the state or regional government to manage the boundary. In a rural context, the terms town boundary, village curtilage or village envelope may be used to apply the same constraining principles. Some jurisdictions refer to the area within an urban growth boundary as an urban growth area (UGA) or urban service area, etc. While the names are different, the concept is the same.
Opposition to unregulated urban growth and ribbon development began to grow towards the end of the 19th century in England. The campaign group Campaign to Protect Rural England (CPRE) was formed in 1926 and exerted environmentalist pressure. Implementation of the notion dated from Herbert Morrison's 1934 leadership of the London County Council. It was first formally proposed by the Greater London Regional Planning Committee in 1935, "to provide a reserve supply of public open spaces and of recreational areas and to establish a green belt or girdle of open space".
New provisions for compensation in the 1947 Town and Country Planning Act allowed local authorities around the country to incorporate green belt proposals in their first development plans. The codification of Green Belt policy and its extension to areas other than London came with the historic Circular 42/55 inviting local planning authorities to consider the establishment of Green Belts. [2]
In the United States, the first urban growth boundary was established in 1958, around the city of Lexington, Kentucky. Lexington's population was expanding, and city leaders were concerned about the survival of the surrounding horse farms closely tied to the city's cultural identity. The first statewide urban growth boundary policy was implemented in Oregon, under then governor Tom McCall, as part of the state's land-use planning program in the early 1970s. Tom McCall and his allies convinced the Oregon Legislature in 1973 to adopt the nation's first set of statewide land use planning laws. McCall, with the help of a unique coalition of farmers and environmentalists, persuaded the Legislature that the state's natural beauty and easy access to nature would be lost in a rising tide of urban sprawl. [3] The new goals and guidelines required every city and county in Oregon to have a long-range plan addressing future growth that meets both local and statewide goals. The state of Tennessee passed the Tennessee Growth Policy Act (TGPA) in 1998 as a response to the state's growing population, increased land development, and conflicts regarding municipal annexation. Tennessee in the year prior to the TGPA's passing was ranked 4th in the United States for fastest rates of land development. [4]
Albania maintains the 'yellow line' system hailing from its socialist regime — limiting urban development beyond a designated boundary for all municipalities.
After the release of Melbourne 2030 in October 2002, the state government of Victoria legislated an urban growth boundary to limit urban sprawl. Since then, the urban growth boundary has been significantly increased a number of times.
In Canada, Vancouver, Toronto, Ottawa (the "Greenbelt"), London, [5] and Waterloo, Ontario have boundaries to restrict growth and preserve greenspace. In Montreal and in the rest of Quebec, an agricultural protection law serves a similar purpose by restricting urban development to white zones and forbidding it on green zones.
Such boundaries are notably absent from cities such as Calgary, Edmonton, and Winnipeg that lie on flat plains and have expanded outwardly on former agricultural land. In British Columbia, the Agricultural Land Reserve serves a similar purpose adjacent to urban areas.
In 2017, Chinese Communist Party general secretary Xi Jinping delivered a speech in the 19th National Congress, in which he mentioned the delineation of "boundaries for urban development" (城镇开发边界). [6] On November 11, 2019, the Party General Office and the General Office of the State Council issued a guiding opinion, requiring "three control lines", including boundaries of urban development, to be designated in territorial spatial planning.
In the plan of some new towns, green belts are included and growth cannot sprawl into or across the green belts. In addition a majority of new towns are surrounded by country parks.
In France, Rennes decided in the 1960s to maintain a green belt after its ring road. This green belt is named Ceinture verte.
Over the past two decades,[ timeframe? ] Greater Auckland has been subject to a process of growth management facilitated through various strategic and legislative documents. An overarching objective has been to manage the growth of Auckland in a higherdensity, centres-based manner consistent with the Auckland Regional Growth Strategy. Effect is given to that strategy through a series of layers of control including the Local Government Amendment (Auckland) Act, the Regional Policy Statement and then via District Plans. A key outcome of the process was the establishment of a metropolitan urban limit (MUL) or urban fence, which dictated the nature and extent of urban activities that could occur within the MUL and hence also dictated the relative values of land within the MUL.
Containment of built-up development is defined through a General Zoning Plan in the case of both urban and rural municipalities. The plan defines the 'intravilan' as the boundary within which built-up development is allowed. Oradea municipality provides tools to verify if land parcels are located in intravilan or not. [7]
An integrated development plan is required in terms of Chapter 5 of the national Municipal Systems Act No 32 of 2000 for all local authorities in South Africa. This plan would include a spatial development framework plan as one of its components, which would require larger metropolitan areas to indicate an urban edge beyond which urban-type development would be largely restricted or forbidden. The concept was introduced in the 1970s by the Natal Town and Regional Planning Commission of the Province of Natal (now known as KwaZulu-Natal) in the regional guide plans for Durban and Pietermaritzburg. The concept was at that stage termed an "urban fence". [8]
Controls to constrain the area of urban development existed in London as early as the 16th century. In the middle of the 20th century the countryside abutting the London conurbation was protected by the Metropolitan Green Belt. Further green belts were then created around other urban areas in the United Kingdom.
The U.S. states of Oregon, Washington and Tennessee require cities and counties to establish urban/county growth boundaries. [9]
Oregon restricts the development of farm and forest land. Oregon's law provides that the growth boundary be adjusted regularly to ensure adequate supply of developable land; as of 2018 the boundary had been expanded more than thirty times since it was created in 1980. [10] In the Metro area, the urban growth boundary has to have enough land within it for 20 years of growth; it is reviewed every six years. Other cities in Oregon seek regulatory review of proposed urban growth boundary expansions as needed. [11] Some economic analysis has concluded that farmland lying immediately outside of Portland's growth boundary is worth as little as one-tenth as much as similar land located immediately on the other side; [12] other analysis have found that the UGB has no effect on prices when some other variables are taken into account. [13]
Washington's Growth Management Act, modeled on Oregon's earlier law and approved in 1990, affected mostly the state's more urban counties: as of 2018, Clark County, King County, Kitsap County, Pierce County, Snohomish County, and Thurston County. [14]
In Tennessee, the boundaries are not used to control growth per se, but rather to define long-term city boundaries. (This was a response to a short-lived law in the late 1990s allowing almost any group of people in the state to form their own city). [15] Every county in the state (except those with consolidated city-county governments) has to set a "planned growth area" for each of its municipalities, which defines how far out services such as water and sewer will go. In the Memphis area, annexation reserves have been created for all municipalities in the county. These are areas that have been set aside for a particular municipality to annex in the future. Cities cannot annex land outside of these reserves, so in effect the urban growth boundaries are along the borders of these annexation reserves. [16] Additionally, new cities are only allowed to incorporate in areas determined to be planned for urban growth. [17]
California requires each county to have a Local Agency Formation Commission, which sets urban growth boundaries for each city and town in the county.
States such as Texas use the delineation of extraterritorial jurisdictional boundaries to map out future city growth with the idea of minimizing competitive annexations rather than controlling growth.
Notable U.S. cities surrounded by UGBs include Portland, Oregon; Boulder, Colorado; Honolulu, Hawaii; Virginia Beach, Virginia; Lexington, Kentucky; Seattle, Washington; Knoxville, Tennessee; [18] and San Jose, California. Urban growth boundaries also exist in Miami-Dade County, Florida and the Minneapolis–Saint Paul metropolitan area of Minnesota. In Miami-Dade, it is referred to as the Urban Development Boundary (UDB), and is generally to protect from continued sprawl into and drainage of the Everglades. Portland, Oregon is required to have an urban growth boundary which contains at least 20,000 acres (81 km2) of vacant land.
Urban growth boundaries have come under an increasing amount of scrutiny in the past 10 years as housing prices have substantially risen, especially on the West Coast of the U.S. [19] By limiting the supply of developable land, critics argue, UGBs increase the price of existing developable and already-developed land. As a result, they theorize, housing on that land becomes more expensive. In Portland, Oregon, for example, the housing boom of the previous four years drove the growth-management authority to substantially increase the UGB in 2004. While some point to affordability for this action, in reality it was in response to Oregon State law. [20] By law, Metro, the regional government, is required to maintain a 20-year supply of land within the boundary. [21] Even with the addition of several thousand acres (several km2) housing prices continued to rise at record-matching paces. Supporters of UGBs point out that Portland's housing market is still more affordable than other West Coast cities, and housing prices have increased across the country.
Smart growth is an urban planning and transportation theory that concentrates growth in compact walkable urban centers to avoid sprawl. It also advocates compact, transit-oriented, walkable, bicycle-friendly land use, including neighborhood schools, complete streets, and mixed-use development with a range of housing choices. The term "smart growth" is particularly used in North America. In Europe and particularly the UK, the terms "compact city", "urban densification" or "urban intensification" have often been used to describe similar concepts, which have influenced government planning policies in the UK, the Netherlands and several other European countries.
Regional planning deals with the efficient placement of land-use activities, infrastructure, and settlement growth across a larger area of land than an individual city or town. Regional planning is related to urban planning as it relates land use practices on a broader scale. It also includes formulating laws that will guide the efficient planning and management of such said regions. Regional planning can be comprehensive by covering various subjects, but it more often specifies a particular subject, which requires region-wide consideration.
In British town planning, the green belt is a policy for controlling urban growth. The term, coined by Octavia Hill in 1875, refers to a ring of countryside where urbanisation will be resisted for the foreseeable future, maintaining an area where local food growing, forestry and outdoor leisure can be expected to prevail. The fundamental aim of green belt policy is to prevent urban sprawl by keeping land permanently green, and consequently the most important attribute of green belts is their openness.
A green belt is a policy, and land-use zone designation used in land-use planning to retain areas of largely undeveloped, wild, or agricultural land surrounding or neighboring urban areas. Similar concepts are greenways or green wedges, which have a linear character and may run through an urban area instead of around it. In essence, a green belt is an invisible line designating a border around a certain area, preventing development of the area and allowing wildlife to return and be established.
Urban sprawl is defined as "the spreading of urban developments on undeveloped land near a more or less densely populated city". Urban sprawl has been described as the unrestricted growth in many urban areas of housing, commercial development, and roads over large expanses of land, with little concern for very dense urban planning. Sometimes the urban areas described as the most "sprawling" are the most densely populated. In addition to describing a special form of urbanization, the term also relates to the social and environmental consequences associated with this development. In modern times some suburban areas described as "sprawl" have less detached housing and higher density than the nearby core city. Medieval suburbs suffered from the loss of protection of city walls, before the advent of industrial warfare. Modern disadvantages and costs include increased travel time, transport costs, pollution, and destruction of the countryside. The revenue for building and maintaining urban infrastructure in these areas are gained mostly through property and sales taxes. Most jobs in the US are now located in suburbs generating much of the revenue, although a lack of growth will require higher tax rates.
Metro is the regional government for the Oregon portion of the Portland metropolitan area, covering portions of Clackamas, Multnomah, and Washington Counties. It is the only directly elected regional government and metropolitan planning organization in the United States. Metro is responsible for overseeing the Portland region's solid waste system, general planning of land use and transportation, maintaining certain regional parks and natural areas, and operating the Oregon Zoo, Oregon Convention Center, Portland's Centers for the Arts, and the Portland Expo Center. It also distributes money from two voter-approved tax measures: one for homeless services and one for affordable housing.
Ribbon development refers to the building of houses along the routes of communications radiating from a human settlement. The resulting linear settlements are clearly visible on land use maps and aerial photographs, giving cities and the countryside a particular character. Such development generated great concern in the United Kingdom during the 1920s and the 1930s as well as in numerous other countries during the decades since.
Green development is a real estate development concept that considers social and environmental impacts of development. It is defined by three sub-categories: environmental responsiveness, resource efficiency, and community and cultural sensitivity. Environmental responsiveness respects the intrinsic value of nature, and minimizes damage to an ecosystem. Resource efficiency refers to the use of fewer resources to conserve energy and the environment. Community and cultural sensitivity recognizes the unique cultural values that each community hosts and considers them in real estate development, unlike more discernable signs of sustainability, like solar energy,. Green development manifests itself in various forms, however it is generally based on solution multipliers: features of a project that provide additional benefits, which ultimately reduce the projects' environmental impacts.
In urban planning, infill, or in-fill, is the rededication of land in an urban environment, usually open-space, to new construction. Infill also applies, within an urban polity, to construction on any undeveloped land that is not on the urban margin. The slightly broader term "land recycling" is sometimes used instead. Infill has been promoted as an economical use of existing infrastructure and a remedy for urban sprawl. Detractors view increased urban density as overloading urban services, including increased traffic congestion and pollution, and decreasing urban green-space. Many also dislike it for social and historical reasons, partly due to its unproven effects and its similarity with gentrification.
Melbourne 2030 is a Victoria State Government strategic planning policy framework for the metropolitan area of Melbourne, Australia intended to cover the period 2001–2030. During this period the population of the metropolitan area is expected to grow by a million people to over five million. Population projections now predict Melbourne's population could reach seven million by that time and the government has since changed its strategy on the policy, abandoning the urban growth boundary in the north and west of Melbourne and reducing green wedges.
Urban consolidation describes the policy of constraining further development and population growth to within the boundaries of preexisting urban areas rather than expanding outward into suburban areas. Urban consolidation seeks to increase the population density of a given urban area by expanding upward, redeveloping preexisting buildings and lots, and constructing new facilities in available spaces. It is theorized that discouraging urban sprawl and encouraging further development of housing units in preexisting urban areas will lead to a net gain in social and economic prosperity.
Solway is an unincorporated community in Knox County, Tennessee, United States. The United States Geographic Names System classifies Solway as a populated place. The area is located between Oak Ridge and Knoxville, just southeast of the Clinch River, which forms the Anderson County line. It lies on Oak Ridge Highway, also known as Tennessee State Route 62, just north of its intersection with Pellissippi Parkway. Beaver Creek flows through the area.
The compact city or city of short distances is an urban planning and urban design concept, which promotes relatively high residential density with mixed land uses. It is based on an efficient public transport system and has an urban layout which – according to its advocates – encourages walking and cycling, low energy consumption and reduced pollution. A large resident population provides opportunities for social interaction as well as a feeling of safety in numbers and "eyes on the street". It is also arguably a more sustainable urban settlement type than urban sprawl because it is less dependent on the car, requiring less infrastructure provision.
Michael Leigh Burton is an American politician. He served in the Oregon House of Representatives from 1985–1995 and was Speaker Pro-tempore (temporarily) in the 1991 session.
The Metropolitan Green Belt is a statutory green belt around London, England. It comprises parts of Greater London, Berkshire, Buckinghamshire, Essex, Hertfordshire, Kent and Surrey, parts of two of the three districts of Bedfordshire and a small area in Copthorne, Sussex. As of 2017/18, Government statistics show the planning designation covered 513,860 hectares of land.
A commuter town is a populated area that is primarily residential rather than commercial or industrial. Routine travel from home to work and back is called commuting, which is where the term comes from. A commuter town may be called by many other terms: "bedroom community", "bedroom town", "bedroom suburb" (US), "dormitory town" (UK). The term "exurb" was used from the 1950s, but since 2006, is generally used for areas beyond suburbs and specifically less densely built than the suburbs to which the exurbs' residents commute.
The Growth Plan for the Greater Golden Horseshoe, 2006 is a regional growth management policy for the Greater Golden Horseshoe (GGH) area of southern Ontario, Canada. Introduced under the Places to Grow Act in 2005, the Plan was approved by the Lieutenant Governor in Council and enacted on June 16, 2006. Administered by the Ontario Ministry of Infrastructure (MOI), the plan identifies density and intensification targets, urban growth centres, strategic employment areas, and settlement area restrictions designed to mitigate negative environmental, economic, and human health impacts associated with sprawling, uncoordinated growth in the region.
The Avon Green Belt, also known as the Bristol and Bath Green Belt, is a non-statutory green belt environmental and planning policy that regulates urban expansion and development in the countryside surrounding the cities of Bristol and Bath in the South West region of England. It covers areas in Bristol, South Gloucestershire, North Somerset, Bath and North East Somerset, Mendip, and Wiltshire. Essentially, the function of the green belt is to limit urban sprawl and maintain the open character of areas around the Bristol and Bath built up areas, and nearby towns and villages. The policy is implemented by local planning authorities on the basis of guidance from central government.
House Bill 2001 is an Oregon bill that allows for alternative, more economical types of housing in an effort to preserve outer-city rural areas, such as farms. The bill is especially aimed at reducing the pace of urban sprawl in densely populated cities such as Portland, Oregon, with non-traditional land use zoning.
Robert Eugene Stacey Jr. was an Oregon attorney and leader in land-use and transportation planning. He served as an elected councillor at Metro, the regional government in the Portland metropolitan area, from 2013 to 2021. On his death, Congressman Earl Blumenauer stated that "Oregon just lost the most important person that most people have never heard of". In a number of roles in state and local government, Stacey was instrumental in defining land-use law and policy within the state of Oregon.
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