Two buyers looked at two apartment projects on the same Bengaluru arterial road in 2026. One tower had wide corridors, generous open space and a comfortable ratio of flats to lifts. The other, on a similar sized plot, had squeezed in nearly twice as many units, and the residents already complained about crowded parking and slow lifts. The plots were alike; the difference was how much building each developer was allowed to pack onto the land. That allowance has a name most buyers never learn until they are living with its consequences: FAR.

Floor Area Ratio, or FAR, and its twin term FSI, quietly decide how dense your future home will be. Understanding it is the difference between choosing a project on a glossy render and choosing one on how it will actually feel to live in.

The short answer. FAR, also called FSI, is the ratio of a building's total floor area to its plot area, so an FAR of 2.0 lets a developer build twice the plot area, as explained in guides like Brigade's FAR explainer. In Bengaluru it is set by the BDA and BBMP and typically ranges from roughly 1.75 on narrow roads to well above 3 on wide ones. Karnataka has also introduced a premium FAR policy letting builders add floors for a fee, reported at about 28 percent of the guidance value. The trade-off for a buyer: a higher FAR means more homes and often a lower price per unit, but also more density, more pressure on parking, lifts and open space, and a less spacious feel.

What do FSI and FAR actually mean?

FAR and FSI are the same thing, expressed as a ratio between how much a developer can build and the size of the plot. If a plot is 10,000 square feet and the permitted FAR is 2.0, the developer can build up to 20,000 square feet of floor area across all floors. A higher number means more construction on the same land.

This single ratio shapes almost everything about how a project feels. It decides how many flats fit on the plot, how tall the towers go, and how much of the land is left as open space, driveways and greenery. Two developers with identical plots but different FAR allowances will deliver very different living experiences, even if the brochures look similar. That is why FAR is not a dry planning term but a direct predictor of your daily quality of life in the building.

A worked example makes it concrete. Imagine a one acre plot, roughly 43,500 square feet. At an FAR of 2.0 the developer can build about 87,000 square feet of floor area, which might translate into around 70 flats of 1,250 square feet each. Raise the FAR to 3.0, whether by a wider road allowance or by buying premium FAR, and the same plot can carry roughly 130,000 square feet, or over 100 flats. That is 30 or more extra families sharing the same land, lifts, gates and open space. Nothing about the plot changed; only the permission did.

What are the FSI limits in Bengaluru?

Bengaluru sets FAR under the BDA and BBMP master plan, and the permitted figure rises with the width of the road your plot faces. Wider roads can carry more traffic and infrastructure, so they are allowed denser buildings. As a rough guide, plots on roads up to about 30 feet get lower FARs in the region of 1.75 to 2.25, roads around 40 feet a little more, and plots on wide roads above 60 feet can reach FARs in the 3.25 to 4 range.

Two useful details for buyers sit alongside the headline number. Basements used purely for parking and utilities are generally not counted within FAR, which is why most projects put parking below ground rather than losing saleable floors to it. And the exact FAR for any given plot depends on its zone and road, so the only reliable figure is the one on the project's sanctioned plan, not a general range. Always ask to see that sanctioned FAR.

Why does the sanctioned figure matter so much? Because a developer who builds beyond the FAR the plan allows has, in effect, put up unauthorised floor area. That can surface later as a hurdle to the occupancy certificate, a demand to regularise the excess, or a discount you are forced to accept when you try to resell. A project that has used exactly the FAR it was sanctioned, and no more, is a far safer purchase than one where the built area quietly exceeds the approval. This is why the sanctioned plan, not the sales pitch, is the document to trust.

What is premium FAR and why are buyers concerned?

Premium FAR lets a developer build beyond the base FAR by paying the government a premium, effectively buying the right to add floors. Karnataka introduced such a policy, under which builders can pay a fee, reported at about 28 percent of the guidance value, to increase the permitted floor area, as covered in reporting on the new premium FAR fee.

The concern that planners and residents have raised is straightforward: more floors on the same plot mean more people, cars and demand on water, sewage and roads that were designed for a lower density. For an individual buyer, premium FAR is not automatically bad, but it does mean the project you are buying into may be denser than the neighbourhood around it was built to handle. It is worth asking a developer directly whether the project uses premium FAR, and how the extra load on lifts, parking and amenities has been planned for.

How does FAR affect me as an apartment buyer?

It affects almost everything you will feel day to day. The table below compares what a higher FAR project and a lower FAR project on a similar plot tend to deliver.

Neither column is simply better; it is a trade-off. A higher FAR can make a home more affordable, and a lower FAR can make it more pleasant but pricier. What matters is that you choose it knowingly, rather than discovering the density only after you move in.

How do I check a project's FAR before buying?

You do not need to be a planner to sanity check density. Work through this sequence before you commit:

1. Ask the developer for the sanctioned plan and note the approved FAR for the project.
2. Check the plot area and the total number of flats, and get a feel for how tightly the land is used.
3. Ask whether the project uses premium FAR to add floors beyond the base allowance.
4. Look at the open space, setbacks and greenery on the actual site, not just the brochure render.
5. Count the lifts per tower and the parking slots per flat against the number of homes.
6. Confirm the built area matches the sanctioned FAR, since building beyond it can create legal and occupancy problems.
7. Visit at a busy hour to see how parking, lifts and entry roads cope with the real density.

FAR ties directly to whether a building was constructed within its approvals, which is exactly what the occupancy certificate confirms. Read this alongside our guides on the occupancy certificate for an apartment and on Karnataka stamp duty and guidance value, since premium FAR is priced off the same guidance value your duty is. If you are evaluating a specific project such as Brigade El Dorado near Aerospace Park, ask for its sanctioned FAR and count the units against the plot before you decide.

What mistakes do buyers make with FAR?

The first mistake is ignoring density entirely and judging a project only on the flat's interior. A beautiful flat in an overloaded tower still means daily fights for parking and lifts. The second is not asking whether the builder has used premium FAR, then being surprised when extra floors and residents arrive.

The third mistake is assuming the sales render reflects the real open space, when the built density can be far higher than the marketing suggests. And the fourth, and most serious, is not confirming that the actual construction stays within the sanctioned FAR. Building beyond the approved FAR can lead to trouble with the occupancy certificate and even regularisation demands later. Ask for the sanctioned FAR, walk the site at a busy time, and choose your density with open eyes.

Frequently asked questions

What is FAR or FSI in simple terms?

FAR, also called FSI, is the ratio of a building's total floor area to its plot area. An FAR of 2.0 means a developer can build twice the plot area across all floors. A higher FAR means more construction on the same land, which usually means more flats, more density and less open space.

What is the FSI limit in Bengaluru?

Bengaluru sets FAR under the BDA and BBMP master plan, and it rises with road width. Narrow roads up to about 30 feet carry lower FARs of roughly 1.75 to 2.25, while wide roads above 60 feet can reach 3.25 to 4. The exact figure depends on the zone and road, so always check the project's sanctioned plan.

What is premium FAR in Karnataka?

Premium FAR lets a developer build beyond the base FAR by paying the government a premium, reported at about 28 percent of the guidance value, to add floors. It can make a project denser than the surrounding area was planned for, so ask directly whether a project uses premium FAR before you buy.

Does basement parking count in FAR?

Generally no. Basements used purely for parking and utilities are usually excluded from the FAR calculation, which is why most Bengaluru projects put parking below ground. This lets developers use their permitted FAR for saleable floors rather than parking, but always confirm the specifics against the project's sanctioned plan.

Last updated 2026-08-22. PropNewz Team.