Floor area ratio

plot ratioFloor Space IndexFARFloor space ratiofloor space ratio''' or '''FSRfloor-area ratiofloor-area-ratioFSI
Floor area ratio (FAR) is the ratio of a building's total floor area (gross floor area) to the size of the piece of land upon which it is built.wikipedia
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Zoning

zonedrezoningzoning laws
The terms can also refer to limits imposed on such a ratio through zoning. The floor area ratio (FAR) can be used in zoning to limit urban density.
New York City went on to develop ever more complex regulations, including floor-area ratio regulations, air rights and others for specific neighborhoods.

Floor area

gross leasable areaGLAgross floor area
Floor area ratio (FAR) is the ratio of a building's total floor area (gross floor area) to the size of the piece of land upon which it is built.
* Floor area ratio

1916 Zoning Resolution

first zoning regulationsZoning Resolution of 19161916 Zoning Act
One of the purposes of the 1916 zoning ordinance of New York City was to prevent tall buildings from obstructing too much light and air.
The new zoning solution used the Floor Area Ratio (FAR) regulation instead of setback rules.

Urban density

densitydensificationdense
The floor area ratio (FAR) can be used in zoning to limit urban density.

Dharavi

Dharavi slum of Mumbaidhvarasslum-dwellers
In Mumbai 1.33 is the norm but higher FSI is allowed along the Metro rail line and slum areas like Dharavi.
Compared to Mumbai's urban floor space index (FSI) of a range from 5 to 15, in Dharavi it is about 13.3.

Ratio

ratiosproportionratio analysis
Floor area ratio (FAR) is the ratio of a building's total floor area (gross floor area) to the size of the piece of land upon which it is built.

New South Wales

NSWNew South Wales, AustraliaColony of New South Wales
In Australia floor space ratio (FSR) is used in New South Wales and plot ratio in Western Australia.

Western Australia

WAWestern AustralianWest Australia
In Australia floor space ratio (FSR) is used in New South Wales and plot ratio in Western Australia.

United Kingdom

BritishUKBritain
In the United Kingdom and Hong Kong both plot ratio and site ratio are used.

Hong Kong

Hong Kong Special Administrative RegionHong Kong, ChinaHongkong
In the United Kingdom and Hong Kong both plot ratio and site ratio are used.

Singapore

Republic of SingaporeSingapore CitySingaporean
In Singapore the terms plot ratio add gross plot ratio (GPR) are more commonly used.

United States

AmericanU.S.USA
In the United States and Canada, floor space ratio (FSR) and floor area ratio (FAR) are both used.

Canada

CanadianCANCanadians
In the United States and Canada, floor space ratio (FSR) and floor area ratio (FAR) are both used.

Empire State Building

The Empire State BuildingEmpire State350 Fifth Avenue
Buildings built before 1961 often have FARs that would be unachievable today, such as the Empire State Building which has an FAR of 25 - meaning that it earns considerably greater rent than a newer building on the same land could hope for.

Building

buildingsedificepublic buildings
An architect can plan for either a single-story building consuming the entire allowable area in one floor, or a multi-story building that rises higher above the plane of the land, but which must consequently result in a smaller footprint than would a single-story building of the same total floor area.

Building design

building designerdesigndesigned
By combining the horizontal and vertical limits into a single figure, some flexibility is permitted in building design, while achieving a hard limit on at least one measure of overall size.

Office

office buildingofficesClass A office space
One advantage to fixing this parameter, as opposed to others such as height, width, or length, is that floor area correlates well with other considerations relevant to zoning regulation, such as total parking that would be required for an office building, total number of units that might be available for residential use, total load on municipal services, etc.

Municipal services

city servicesmunicipal servicemunicipal
One advantage to fixing this parameter, as opposed to others such as height, width, or length, is that floor area correlates well with other considerations relevant to zoning regulation, such as total parking that would be required for an office building, total number of units that might be available for residential use, total load on municipal services, etc.

Chinese architecture

ChinesearchitectureChinese architectural
Moreover, the pressure for urban development throughout contemporary China required higher speed of construction and higher floor area ratio, which means that in the great cities the demand for traditional Chinese buildings, which are normally less than 3 levels, has declined in favor of modern architecture.

Adaptive reuse

convertedadaptively reusedadapted
They felt that there is limited flexibility in the building codes, limited plot ratio bonuses and an overall “lack of encouragement” by state and local governments to implement innovative adaptive reuse designs.

Pavement light

Pavement lightsvault lightVault lights
Historically, landlords took an interest in improving not only the floor area ratio, but the amount of space that was naturally lit, on the grounds that this was profitable.

List of tallest structures in Tokyo

List of tallest buildings and structures in Tokyotallest building in Tokyo17th-tallest building in Tokyo
Due to aesthetic and engineering concerns, Japan's Building Standard Law set an absolute height limit of 31 metres until 1963, when the limit was abolished in favor of a Floor Area Ratio limit.

Central Park (skyscraper)

Central ParkCentral Park Tower
The approval of the tower was controversial due to the plot ratio concessions made by the Perth City Council to the developers.