Inclusionary zoning (IZ) is municipal and county planning ordinances that require or provide incentives when a given percentage of units in a new housing development be affordable by people with low to moderate incomes. Such housing is known as inclusionary housing. The term inclusionary zoning indicates that these ordinances seek to counter exclusionary zoning practices, which exclude low-cost housing from a municipality through the zoning code. Non-profit affordable housing developers build 100% of their units as affordable, but need significant taxpayer subsidies for this model to work. Inclusionary zoning allows municipalities to have new affordable housing constructed without taxpayer subsidies. In order to encourage for-profit developers to build projects that include affordable units, cities often allow developers to build more total units than their zoning laws currently allow so that there will be enough profit generating market-rate units to offset the losses from the below market-rate units and still allow the project to be financially feasible. Inclusionary zoning can be mandatory or voluntary, though the great majority of units have been built as a result of mandatory programmes. There are variations among the set-aside requirements, affordability levels, and length of time the unit is deed-restricted as affordable housing.
Affordable housing is housing which is deemed affordable to those with a household income at or below the median as rated by the national government or a local government by a recognized housing affordability index. Most of the literature on affordable housing refers to mortgages and a number of forms that exist along a continuum – from emergency homeless shelters, to transitional housing, to non-market rental, to formal and informal rental, indigenous housing, and ending with affordable home ownership.
Mixed use is a type of urban development, urban design, urban planning and/or a zoning classification that blends multiple uses, such as residential, commercial, cultural, institutional, or entertainment, into one space, where those functions are to some degree physically and functionally integrated, and that provides pedestrian connections. Mixed-use development may be applied to a single building, a block or neighborhood, or in zoning policy across an entire city or other administrative unit. These projects may be completed by a private developer, (quasi-)governmental agency, or a combination thereof. A mixed-use development may be a new construction, reuse of an existing building or brownfield site, or a combination.
Secondary suites (also known as accessory dwelling units (ADU), in-law apartments, granny flats, granny annexes or garden suites) are self-contained apartments, cottages, or small residential units, that are located on a property that has a separate main, single-family home, duplex, or other residential unit. In some cases, the ADU or in-law is attached to the principal dwelling or is an entirely separate unit, located above a garage, across a carport, or in the backyard on the same property. Reasons for wanting to add a secondary suite to a property may be to receive additional income, provide social and personal support to a family member, or obtain greater security.
Medium-density housing is a term used within urban planning and academic literature to refer to a category of residential development that falls between detached suburban housing and large multi-story buildings. There is no singular definition of medium-density housing as its precise definition tends to vary between jurisdiction. Scholars however, have found that medium density housing ranges from about 25 to 80 dwellings per hectare, although most commonly sits around 30 and 40 dwellings/hectare. Typical examples of medium-density housing include duplexes, triplexes, townhouses, row homes, detached homes with garden suites, and walk-up apartment buildings.
Residential segregation is the physical separation of two or more groups into different neighborhoods—a form of segregation that "sorts population groups into various neighborhood contexts and shapes the living environment at the neighborhood level". While it has traditionally been associated with racial segregation, it generally refers to the separation of populations based on some criteria.
In the United States, subsidized housing is administered by federal, state and local agencies to provide subsidized rental assistance for low-income households. Public housing is priced much below the market rate, allowing people to live in more convenient locations rather than move away from the city in search of lower rents. In most federally-funded rental assistance programs, the tenants' monthly rent is set at 30% of their household income. Now increasingly provided in a variety of settings and formats, originally public housing in the U.S. consisted primarily of one or more concentrated blocks of low-rise and/or high-rise apartment buildings. These complexes are operated by state and local housing authorities which are authorized and funded by the United States Department of Housing and Urban Development (HUD). In 2020, there were one million public housing units. In 2022, about 5.2 million American households that received some form of federal rental assistance.
Exclusionary zoning is the use of zoning ordinances to exclude certain types of land uses from a given community, especially to regulate racial and economic diversity. In the United States, exclusionary zoning ordinances are standard in almost all communities. Exclusionary zoning was introduced in the early 1900s, typically to prevent racial and ethnic minorities from moving into middle- and upper-class neighborhoods. Municipalities use zoning to limit the supply of available housing units, such as by prohibiting multi-family residential dwellings or setting minimum lot size requirements. These ordinances raise costs, making it less likely that lower-income groups will move in. Development fees for variance, a building permit, a certificate of occupancy, a filing (legal) cost, special permits and planned-unit development applications for new housing also raise prices to levels inaccessible for lower income people.
Housing inequality is a disparity in the quality of housing in a society which is a form of economic inequality. The right to housing is recognized by many national constitutions, and the lack of adequate housing can have adverse consequences for an individual or a family. The term may apply regionally, temporally or culturally. Housing inequality is directly related to racial, social, income and wealth inequality. It is often the result of market forces, discrimination and segregation.
Housing discrimination in the United States refers to the historical and current barriers, policies, and biases that prevent equitable access to housing. Housing discrimination became more pronounced after the abolition of slavery in 1865, typically as part of Jim Crow laws that enforced racial segregation. The federal government didn't begin to take action against these laws until 1917, when the Supreme Court struck down ordinances prohibiting blacks from occupying or owning buildings in majority-white neighborhoods in Buchanan v. Warley. However, the federal government as well as local governments continued to be directly responsible for housing discrimination through redlining and race-restricted covenants until the Civil Rights Act of 1968.
Housing trust funds are established sources of funding for affordable housing construction and other related purposes created by governments in the United States (U.S.). Housing Trust Funds (HTF) began as a way of funding affordable housing in the late 1970s. Since then, elected government officials from all levels of government in the U.S. have established housing trust funds to support the construction, acquisition, and preservation of affordable housing and related services to meet the housing needs of low-income households. Ideally, HTFs are funded through dedicated revenues like real estate transfer taxes or document recording fees to ensure a steady stream of funding rather than being dependent on regular budget processes. As of 2016, 400 state, local and county trust funds existed across the U.S.
Non-profit housing developers build affordable housing for individuals under-served by the private market. The non-profit housing sector is composed of community development corporations (CDC) and national and regional non-profit housing organizations whose mission is to provide for the needy, the elderly, working households, and others that the private housing market does not adequately serve. Of the total 4.6 million units in the social housing sector, non-profit developers have produced approximately 1.547 million units, or roughly one-third of the total stock. Since non-profit developers seldom have the financial resources or access to capital that for-profit entities do, they often use multiple layers of financing, usually from a variety of sources for both development and operation of these affordable housing units.
Green affordable housing is reasonably priced housing that incorporates sustainable features. The phenomenon has become increasingly common in all over the world as climate change and the cost of housing become alarming issues. For example, the United States adopted state and local policies that favor or require green building practices for publicly owned or funded buildings. Potential benefits of green affordable housing include lower energy cost burden and improved health. One challenge to green affordable housing is the tendency to prioritize short-term costs over long-term benefits, leading to higher upfront cost. The challenge for green housing advocates is to see to the life cycle cost of the building. Many affordable housing projects already find it a challenge to raise capital to finance basic affordable housing. This challenge is compounded by the phenomenon of urban greening and environmental gentrification, which can drive up housing prices and becomes a challenge for green affordable housing. Green affordable housing has taken form in traditionally wooden homes, green homes and most recently with 'upcycling' shipping containers.
The definition of mixed-income housing is broad and encompasses many types of dwellings and neighborhoods. Following Brophy and Smith, the following will discuss “non-organic” examples of mixed-income housing, meaning “a deliberate effort to construct and/or own a multifamily development that has the mixing of income groups as a fundamental part of its financial and operating plans” A new, constructed mixed-income housing development includes diverse types of housing units, such as apartments, town homes, and/or single-family homes for people with a range of income levels. Mixed-income housing may include housing that is priced based on the dominant housing market with only a few units priced for lower-income residents, or it may not include any market-rate units and be built exclusively for low- and moderate-income residents. Calculating Area Median Income (AMI) and pricing units at certain percentages of AMI most often determine the income mix of a mixed-income housing development. Mixed-income housing is one of two primary mechanisms to eliminate neighborhoods of concentrated poverty, combat residential segregation, and avoid the building of public housing that offers 100% of its housing units to those living in poverty. Mixed-income housing is built through federal-, state-, and local-level efforts and through a combination of public-private-non-profit partnerships.
Affordable housing in Canada is living spaces that are deemed financially accessible to those with a median household income in Canada. The property ladder continuum of affordable housing in Canada includes market, non-market, and government-subsidized housing.
Missing middle housing refers to a lack of medium-density housing in the North American context. The term describes an urban planning phenomenon in Canada, the United States, Australia and more recent developments in industrialised and newly industrialising countries due to zoning regulations favoring social and racial separation and car-dependent suburban sprawl.
Since about 1970, California has been experiencing an extended and increasing housing shortage, such that by 2018, California ranked 49th among the states of the U.S. in terms of housing units per resident. This shortage has been estimated to be 3-4 million housing units as of 2017. Experts say that California needs to double its current rate of housing production to keep up with expected population growth and prevent prices from further increasing, and needs to quadruple the current rate of housing production over the next seven years in order for prices and rents to decline.
Housing insecurity is the lack of security in an individual shelter that is the result of high housing costs relative to income, poor housing quality, unstable neighborhoods, overcrowding, and, but may not include, homelessness.
Affordable housing is housing that is deemed affordable to those with a median household income as rated by the national government or a local government by a recognized housing affordability index. A general rule is no more than 30% of gross monthly income should be spent on housing, to be considered affordable as the challenges of promoting affordable housing varies by location.
The term "affordable housing" refers to housing that is considered economically accessible for individuals and families whose household income falls at or below the Area Median Income (AMI), as evaluated by either national or local government authorities through an officially recognized housing affordability index. However, in the US, the term is mostly used to refer to housing units that are deed restricted to households considered Low-Income, Very Low-Income, and Extremely Low-Income. These units are most often constructed by non-profit "affordable housing developers" who use a combination of private money and government subsidies. For-profit developers, when building market-rate developments, may include some "affordable" units, if required as part of a city's inclusionary zoning mandate.
