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AEC × AI glossary

What is FAR (floor area ratio) or FSI?

Also called: FAR, FSI, floor space index

Definition

FAR (floor area ratio), also called FSI (floor space index) in many Indian cities, is the total built-up floor area permitted on a plot divided by the plot area. FAR limits set by local building bye-laws decide how much can be built on a site, so it drives feasibility and design.

By Published

Why does FAR (floor area ratio) or FSI matter for architects, engineers and contractors in India?

FAR limits set by local building bye-laws decide how much can be built on a site, so it drives feasibility and design. Rules on what counts towards FAR vary between authorities, so checks must follow the applicable bye-laws.

What is an example of FAR (floor area ratio) or FSI?

On a 500 m² plot with a permitted FAR of 2.0, up to 1,000 m² of countable floor area can be built.

Where does CloudBrain come in?

Our workflow automation service helps architecture, engineering and construction firms put this into practice. See the related terms below, or browse the full AEC × AI glossary.

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