Duplex (building) in the context of "Medium-density housing"

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⭐ Core Definition: Duplex (building)

A duplex house plan has two living units attached to each other, either next to each other as townhouses and condominiums or one above the other like apartments. By contrast, a building comprising two attached units on two distinct properties is typically considered semi-detached or twin homes but is also called a duplex in parts of the Northeastern United States, Western Canada, and Saudi Arabia.

The term "duplex" is not extended to three-unit and four-unit buildings, as they would be referred to with specific terms such as three-family (or triplex) and fourplex (or quadplex/quadruplex) or a more general multiplex. Because of the flexibility of the term, the line between an apartment building and a duplex is somewhat blurred, with apartment buildings tending to be bigger, while duplexes are usually the size of a single-family house.

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👉 Duplex (building) in the context of Medium-density housing

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.

In Australia the density of standard suburban residential areas has traditionally been between 8-15 dwellings per hectare. In New Zealand medium-density development is defined as four or more units with an average density of less than 350m. Such developments typically consist of semi-attached and multi-unit housing (also known as grouped housing) and low-rise apartments.

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Duplex (building) in the context of Housing starts

Housing starts is an economic indicator that reflects the number of privately owned new houses (technically housing units) on which construction has been started in a given period. This data is divided into three types: single-family houses, townhouses or small condos, and apartment buildings with five or more units.

Each apartment unit is considered a single start. The construction of a 30-unit apartment building is counted as 30 housing starts.

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Duplex (building) in the context of Semi-detached

A semi-detached house (often abbreviated to semi) is a single-family duplex dwelling that shares one common wall with its neighbour. The name distinguishes this style of construction from detached houses, with no shared walls, and terraced houses, with a shared wall on both sides. Often, semi-detached houses are built in pairs in which each house's layout is a mirror image of the other's.

Semi-detached houses are the most common property type in the United Kingdom (UK). They accounted for 32% of UK housing transactions and 32% of the English housing stock in 2008. Between 1945 and 1964, 41% of all properties built were semis. After 1980, the proportion of semis built fell to 15%.

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LINKED FROM (PARENTS)
← Medium-density housing ← Housing starts ← Semi-detached
LINKS TO (CHILDREN)
Sausalito, California → Townhouse → Condominium (living space) → Apartment → Semi-detached → Northeastern United States → Western Canada → Saudi Arabia → Apartment building →