A three-decker or triple-decker, in the United States, is a three-story ( triplex)
apartment building
An apartment (American English), or flat (British English, Indian English, South African English), is a self-contained housing unit (a type of residential real estate) that occupies part of a building, generally on a single story. There are ...
. These buildings are typical of light-framed, wood construction, where each floor usually consists of a single apartment, and frequently, originally, extended families lived in two, or all three floors. Both stand-alone and
semi-detached
A semi-detached house (often abbreviated to semi) is a single family duplex dwelling house that shares one common wall with the next house. The name distinguishes this style of house from detached houses, with no shared walls, and terraced house ...
versions are common.
During the late 19th and early 20th centuries, tens of thousands of three-deckers were constructed, mostly in
New England
New England is a region comprising six states in the Northeastern United States: Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont. It is bordered by the state of New York to the west and by the Canadian provinces ...
, as an economical means of housing the thousands of newly arrived immigrant workers who filled the factories of the area. The economics of the three-decker are simple: the cost of the land, basement and roof are spread among three or six apartments, which typically have identical floor plans. The three-decker apartment house was seen as an alternative to the row-housing built in other cities of
Northeastern United States
The Northeastern United States, also referred to as the Northeast, the East Coast, or the American Northeast, is a geographic region of the United States. It is located on the Atlantic coast of North America, with Canada to its north, the Southe ...
during this period, such as in
New York City
New York, often called New York City or NYC, is the List of United States cities by population, most populous city in the United States. With a 2020 population of 8,804,190 distributed over , New York City is also the L ...
,
Boston
Boston (), officially the City of Boston, is the state capital and most populous city of the Commonwealth of Massachusetts, as well as the cultural and financial center of the New England region of the United States. It is the 24th- mo ...
,
Philadelphia
Philadelphia, often called Philly, is the largest city in the Commonwealth of Pennsylvania, the sixth-largest city in the U.S., the second-largest city in both the Northeast megalopolis and Mid-Atlantic regions after New York City. Sinc ...
,
Baltimore
Baltimore ( , locally: or ) is the List of municipalities in Maryland, most populous city in the U.S. state of Maryland, fourth most populous city in the Mid-Atlantic (United States), Mid-Atlantic, and List of United States cities by popula ...
, and
Washington, D.C.
)
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, image_caption = Clockwise from top left: the Washington Monument and Lincoln Memorial on the National Mall, United States Capitol, Logan Circle, Jefferson Memorial, White House, Adams Morgan, ...
History
Three-deckers were most commonly built in the emerging industrial cities of central
New England
New England is a region comprising six states in the Northeastern United States: Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont. It is bordered by the state of New York to the west and by the Canadian provinces ...
between 1870 and 1920. There are large concentrations in
Massachusetts
Massachusetts (Massachusett language, Massachusett: ''Muhsachuweesut assachusett writing systems, məhswatʃəwiːsət'' English: , ), officially the Commonwealth of Massachusetts, is the most populous U.S. state, state in the New England ...
and
Rhode Island
Rhode Island (, like ''road'') is a U.S. state, state in the New England region of the Northeastern United States. It is the List of U.S. states by area, smallest U.S. state by area and the List of states and territories of the United States ...
.
Worcester, Massachusetts
Worcester ( , ) is a city and county seat of Worcester County, Massachusetts, United States. Named after Worcester, England, the city's population was 206,518 at the 2020 United States census, 2020 census, making it the second-List of cities i ...
, was the likely origin of the type, with Francis Gallagher (1830–1911) held to be the originator. Other cities make the same claim, and they can also be found in the former industrial cities of
New Hampshire
New Hampshire is a U.S. state, state in the New England region of the northeastern United States. It is bordered by Massachusetts to the south, Vermont to the west, Maine and the Gulf of Maine to the east, and the Canadian province of Quebec t ...
,
Maine
Maine () is a state in the New England and Northeastern regions of the United States. It borders New Hampshire to the west, the Gulf of Maine to the southeast, and the Canadian provinces of New Brunswick and Quebec to the northeast and north ...
, and
Connecticut
Connecticut () is the southernmost state in the New England region of the Northeastern United States. It is bordered by Rhode Island to the east, Massachusetts to the north, New York to the west, and Long Island Sound to the south. Its cap ...
, as well as the New York City area (particularly in northern
New Jersey
New Jersey is a state in the Mid-Atlantic and Northeastern regions of the United States. It is bordered on the north and east by the state of New York; on the east, southeast, and south by the Atlantic Ocean; on the west by the Delaware ...
and
Yonkers
Yonkers () is a city in Westchester County, New York, United States. Developed along the Hudson River, it is the third most populous city in the state of New York, after New York City and Buffalo. The population of Yonkers was 211,569 as enu ...
) and Upstate New York, where they are commonly seen as far west as Utica. Three-deckers are also found in Canadian cities with strong ties to New England, particularly Halifax, though they are less ubiquitous. They were primarily housing for the
working-class
The working class (or labouring class) comprises those engaged in manual-labour occupations or industrial work, who are remunerated via waged or salaried contracts. Working-class occupations (see also " Designation of workers by collar colou ...
and
middle-class
The middle class refers to a class of people in the middle of a social hierarchy, often defined by occupation, income, education, or social status. The term has historically been associated with modernity, capitalism and political debate. Comm ...
families, often in multiple rows on narrow lots in the areas surrounding the factories. They were derided as poor quality buildings, shoddily constructed from flammable
balloon framing
Framing, in construction, is the fitting together of pieces to give a structure support and shape. Framing materials are usually wood, engineered wood, or structural steel. The alternative to framed construction is generally called ''mass wal ...
: a 1911 report by the Massachusetts State Housing Committee in Massachusetts decried the three-decker as "a flimsy fire-trap and a menace to human life".
It is estimated that by 1920, the city of
Boston
Boston (), officially the City of Boston, is the state capital and most populous city of the Commonwealth of Massachusetts, as well as the cultural and financial center of the New England region of the United States. It is the 24th- mo ...
had over 15,000 three-decker houses. Areas such as Dorchester, Roxbury,
Mattapan
Mattapan () is a neighborhood in Boston, Massachusetts. Historically a section of neighboring Dorchester, Mattapan became a part of Boston when Dorchester was annexed in 1870. Mattapan is the original Native American name for the Dorchester ar ...
, and
Jamaica Plain
Jamaica Plain is a neighborhood of in the City of Boston, Massachusetts, United States. Settled by Puritans seeking farmland to the south, it was originally part of the former Town of Roxbury, now also a part of the City of Boston. The commun ...
were popular with the emerging middle class and became "
streetcar suburbs
A streetcar suburb is a residential community whose growth and development was strongly shaped by the use of streetcar lines as a primary means of transportation. Such suburbs developed in the United States in the years before the automobile, when ...
" as transportation systems expanded from the older, core sections of the city. Typically, the affordable three-decker homes attracted live-in landlords who would collect rent from the other two apartments.
In Worcester, Massachusetts, sewer connection charges were based on street frontage, so builders favored houses with as little frontage as possible. This is one reason why three-deckers are often situated on narrow lots and are rectangular shape, with the smaller sides at the front and the rear.
In the textile mill city of
Fall River, Massachusetts
Fall River is a city in Bristol County, Massachusetts, United States. The City of Fall River's population was 94,000 at the 2020 United States Census, making it the tenth-largest city in the state.
Located along the eastern shore of Mount H ...
, thousands of wood-framed multi-family tenements were built by the mill owners during the boom years of the 1870s to house their workers. Many more were built by private individuals who rented their apartments to the mill workers and their families. This style of housing differed greatly from the well-spaced boardinghouses of the early 19th century built in Lowell and
Lawrence, Massachusetts
Lawrence is a city located in Essex County, Massachusetts, United States, on the Merrimack River. At the 2020 census, the city had a population of 89,143. Surrounding communities include Methuen to the north, Andover to the southwest, and Nort ...
, or the cottages of Rhode Island.
A different three-story style apartment house is also common in urban working-class neighborhoods in northern New Jersey (particularly in and around
Newark
Newark most commonly refers to:
* Newark, New Jersey, city in the United States
* Newark Liberty International Airport, New Jersey; a major air hub in the New York metropolitan area
Newark may also refer to:
Places Canada
* Niagara-on-the ...
,
Jersey City
Jersey City is the second-most populous city in the U.S. state of New Jersey, after Newark.Paterson). They are sometimes locally referred to as "Bayonne Boxes".
Similar brick apartment buildings were built in
Chicago
(''City in a Garden''); I Will
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, coordinates =
, coordinates_footnotes =
, subdivision_type = Country
, subdivision_name ...
in the 1910s and 1920s. There they are locally referred to as "Three Flats".
Structure and variations
Three-deckers are usually defined by the style of their roofs, being either
gable
A gable is the generally triangular portion of a wall between the edges of intersecting roof pitches. The shape of the gable and how it is detailed depends on the structural system used, which reflects climate, material availability, and aesth ...
,
hip
In vertebrate anatomy, hip (or "coxa"Latin ''coxa'' was used by Celsus in the sense "hip", but by Pliny the Elder in the sense "hip bone" (Diab, p 77) in medical terminology) refers to either an anatomical region or a joint.
The hip region is ...
, or flat-roofed, with preference often varying regionally. For instance, hipped and gabled three-deckers are dominant in Worcester. In smaller cities, such as Lawrence or Albany, New York, two or two and a half story variants are common, while retaining a similar overall typology, with a bay window on the front, and prominent porches. While typically lacking the ornamentation found on other homes of the Victorian period, they sometimes were built with certain decorative details, such as porch railings and posts. A typical feature of the three-decker is a vertical stack of
bay window
A bay window is a window space projecting outward from the main walls of a building and forming a bay in a room.
Types
Bay window is a generic term for all protruding window constructions, regardless of whether they are curved or angular, or r ...
s, usually facing the street side of the house. The rear usually has utility porches, which can be enclosed.
Three-deckers feature two apartments per floor, with the units sharing a common wall.
Each apartment typically has a front and/or back porch for each apartment, and because the buildings are usually freestanding, there are windows on all four sides. Some three-deckers feature a single front door that accesses all three units; others feature two entrances (one accessing the first floor unit externally, with the other leading to a stairwell to units two and three).
Three-deckers typically use
balloon framing
Framing, in construction, is the fitting together of pieces to give a structure support and shape. Framing materials are usually wood, engineered wood, or structural steel. The alternative to framed construction is generally called ''mass wal ...
, which makes them especially susceptible to destructive fires.
Legacy
Three-deckers were built in huge numbers, in some areas comprising entire neighborhoods, but by the 1950s, a number of them had been abandoned or razed because of
suburb
A suburb (more broadly suburban area) is an area within a metropolitan area, which may include commercial and mixed-use, that is primarily a residential area. A suburb can exist either as part of a larger city/urban area or as a separate ...
an growth and
urban renewal
Urban renewal (also called urban regeneration in the United Kingdom and urban redevelopment in the United States) is a program of land redevelopment often used to address urban decay in cities. Urban renewal involves the clearing out of blighte ...
.
Their reputation as poor quality and dangerous persisted into the 1970s. Starting in the early 1980s, however, they became desirable again as older
streetcar suburbs
A streetcar suburb is a residential community whose growth and development was strongly shaped by the use of streetcar lines as a primary means of transportation. Such suburbs developed in the United States in the years before the automobile, when ...
began to
gentrify
Gentrification is the process of changing the character of a neighborhood through the influx of more affluent residents and businesses. It is a common and controversial topic in urban politics and planning. Gentrification often increases the econ ...
, often by buyers looking for homes where they could live in one unit and
rent
Rent may refer to:
Economics
*Renting, an agreement where a payment is made for the temporary use of a good, service or property
*Economic rent, any payment in excess of the cost of production
*Rent-seeking, attempting to increase one's share of e ...
the other two, thus helping them pay their
mortgage
A mortgage loan or simply mortgage (), in civil law jurisdicions known also as a hypothec loan, is a loan used either by purchasers of real property to raise funds to buy real estate, or by existing property owners to raise funds for any pu ...
. As
condominium
A condominium (or condo for short) is an ownership structure whereby a building is divided into several units that are each separately owned, surrounded by common areas that are jointly owned. The term can be applied to the building or complex ...
s became more common, many were converted into individually-owned units.
Since 1990, many three-deckers in Worcester, Massachusetts, have been listed on the
National Register of Historic Places
The National Register of Historic Places (NRHP) is the United States federal government's official list of districts, sites, buildings, structures and objects deemed worthy of preservation for their historical significance or "great artistic v ...
.
Recently, a new wave of three-decker apartment houses has been built in areas of Boston as an alternative to the
townhouse
A townhouse, townhome, town house, or town home, is a type of terraced housing. A modern townhouse is often one with a small footprint on multiple floors. In a different British usage, the term originally referred to any type of city residence ...
style condominium or apartment buildings more typically associated with suburban areas. Boston's zoning regulations allow new three-family houses to be constructed in areas with existing three-deckers. However, building codes for the new buildings are far more stringent today, with requirements for
fire sprinkler
A fire sprinkler or sprinkler head is the component of a fire sprinkler system that discharges water when the effects of a fire have been detected, such as when a predetermined temperature has been exceeded. Fire sprinklers are extensively use ...
List of house types
This is a list of house types. Houses can be built in a large variety of configurations. A basic division is between free-standing or single-family detached homes and various types of attached or multi-family residential dwellings. Both may v ...