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Understanding Floor Space Ratio (FSR)

Floor space ratio (FSR) is a measure of the total gross floor area of a building relative to the total site area, indicating the intended density. FSR sets the theoretical maximum capacity but other development controls may prevent reaching the maximum allowable floor space. FSR does not define the maximum building envelope, which provides overall parameters, and the gross floor area should only fill 70% of the envelope. Building envelopes should be tested before setting FSR controls to ensure development aligns with site capacity and local density goals.

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69 views1 page

Understanding Floor Space Ratio (FSR)

Floor space ratio (FSR) is a measure of the total gross floor area of a building relative to the total site area, indicating the intended density. FSR sets the theoretical maximum capacity but other development controls may prevent reaching the maximum allowable floor space. FSR does not define the maximum building envelope, which provides overall parameters, and the gross floor area should only fill 70% of the envelope. Building envelopes should be tested before setting FSR controls to ensure development aligns with site capacity and local density goals.

Uploaded by

Linda Linda
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Floor space ratio (FSR)

Is the relationship of the total gross floor area (GFA) of a building relative to the total site
area it is built on. It indicates the intended density. FSR is a widely used method for
estimating the development potential of a site. However, it is important to note that FSR
controls set the theoretical maximum capacity. It may not always be possible to reach the
maximum allowable floor space due to other development controls or constraints specific
to the site such as lot size or shape, existing landscape features, neighbouring properties or
heritage considerations.

FSR is not a measure of the maximum capacity of the building envelope. The envelope provides
an overall parameter for the design of the development. The allowable gross floor area
should only ‘fill’ approximately 70% of the building envelope (see section 2B Building
envelopes). In new urban areas or where an existing neighbourhood is undergoing change,
building envelopes should be tested prior to setting FSR controls.

Aims

• Ensure that development aligns with the optimum capacity of the site and the desired
density of the local area
• Provide opportunities for building articulation and creativity within a building
envelope by carefully setting the allowable floor space.

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