DCPR 2034 Explained for Housing Societies

DCPR 2034 is the official rulebook — its full name is the Development Control and Promotion Regulations 2034 — that decides what can legally be built on any plot in Greater Mumbai, the city governed by the Municipal Corporation of Greater Mumbai (MCGM, also called the BMC). For a housing society planning redevelopment, these regulations quietly control the one number that matters most: how much new construction is allowed on your land. That in turn decides how large a flat each member receives, how much corpus and rent the builder can afford to pay, and how many extra flats the builder gets to sell. This guide explains DCPR 2034 in plain English — what FSI is, what "fungible" area means, the difference between base and premium FSI, what TDR is, and the special "33-series" regulations that make old-building, cluster and slum redevelopment possible. The actual published bands are set out on this page, so you can find your own figure; the FSI calculator then turns that band into square metres for your plot.

What DCPR 2034 actually is

DCPR 2034 is the set of building and development rules notified for Greater Mumbai alongside the city's Development Plan for the horizon year 2034. The "2034" is a planning target year, not a version number. These regulations replaced the older Development Control Regulations of 1991 and now govern every construction and redevelopment permission that the MCGM grants inside the municipal limits of Greater Mumbai — from the Island City in the south to the eastern and western suburbs. Every approval a redevelopment passes through, from the sanction of plans to the final occupation permission, is tested against these rules.

Two points matter most for a society. First, DCPR 2034 applies only to Greater Mumbai. The rest of Maharashtra — Thane, Navi Mumbai, Pune, Nagpur and other municipal areas — follows a separate rulebook called the UDCPR (Unified Development Control and Promotion Regulations). So if your building is inside MCGM limits, DCPR 2034 is your law; just outside those limits, the UDCPR applies, and the numbers differ. Second, the meanings of the key terms are fixed in Regulation 2 ("Definitions") of DCPR 2034. Using those exact meanings — not loose everyday language — is what protects members during negotiations, because a builder's proposal lives or dies on how each of these words is applied.

FSI: the number behind everything

Floor Space Index (FSI) is defined in DCPR 2034 as the ratio of the combined total floor area of all floors of a building to the area of the plot. In plain arithmetic:

FSI = total floor area of all floors ÷ plot area.

If a plot measures 1,000 square metres and the permissible FSI is 2.0, the total floor area allowed is 2,000 square metres. Double the FSI and you roughly double what can be built — more floors, more flats, and therefore more area to share between members and the builder. This is exactly why every extra decimal point of FSI is worth so much in a redevelopment, and why the "extra flats" that fund a project only exist because the FSI allows them.

DCPR 2034 does give you a starting number. The zonal (basic) FSI is 1.33 in the Island City and 1.00 in the suburbs and extended suburbs. On top of that basic figure, Table 12 of the regulation allows premium FSI and TDR according to the width of the road your plot faces. That takes the total permissible FSI to somewhere between 1.00 and 3.00, before any 33-series redevelopment incentive is added. The full band table is set out further down this page. To turn your band into buildable square metres, use the FSI calculator.

Source: DCPR 2034 (sanctioned), Table 12 and Regulation 30(A)(6).

A related term is built-up area — under DCPR 2034 this is the area a building covers on all floors including cantilevered portions, but excluding cladding and anything specifically exempted from FSI computation. Built-up area is not the same as the carpet area you actually live in, which is explained further down. Keeping these two apart is one of the most useful habits a committee can build.

Fungible Compensatory Area (Regulation 31(3))

"Fungible FSI" is the phrase everyone uses; the correct official term in DCPR 2034 is Fungible Compensatory Area. It is built-up area permitted over and above the admissible FSI, granted by special permission of the Municipal Commissioner under Regulation 31(3), generally on payment of a premium to the corporation.

In practical terms, fungible area is extra construction the builder can add on top of the base entitlement. Part of it can be passed on to members as larger flats, and part helps the builder increase the saleable portion. Because it sits above the base FSI and is paid for separately, how much fungible area is used — and who benefits from it — is an important line item to check in any redevelopment proposal. A member's flat can grow meaningfully depending on how this area is allocated, so it should never be left vague in the agreement.

Carpet area: the two meanings you must know

Members care about carpet area — the space you can actually lay a carpet on. Getting this definition right is worth real square feet to every member.

1. What it means. DCPR 2034 states that carpet area carries the same meaning as under the Real Estate (Regulation and Development) Act, 2016 (RERA). Under RERA, carpet area excludes the external walls, the areas under service shafts, the exclusive balcony or verandah area and the exclusive open terrace area — but it includes the internal partition walls of the flat. That last point matters: a builder who quietly deducts your internal walls is giving you less than RERA carpet area.
2. Where it is used. The regulation applies that same meaning to the rehabilitation area and the incentive under Regulations 33(5), 33(7), 33(7)(A), 33(9), 33(9)A, 33(10) and 33(10)A. So the area your society is rehoused in, and the incentive the builder earns, are both measured on this one basis — there is no separate, smaller "redevelopment carpet area".

The lesson for members is simple: always insist that the area promised to you is stated as carpet area, never "built-up" or "saleable", and that the definition used matches DCPR 2034 and RERA. If any term in your offer is unclear, the plain-language FAQ and glossary defines each one.

Base FSI, premium FSI and TDR

The total construction allowed on a plot is usually built up from several layers, not one figure:

• Base FSI — the basic quantum of construction allowed on the plot as of right, without paying anything extra. Under DCPR 2034 this zonal FSI is 1.33 in the Island City and 1.00 in the suburbs and extended suburbs. In the industrial zone it is 1.00 in both areas, and can be taken up to 2.00 using TDR.
• Premium FSI — additional FSI that can be purchased from the planning authority on payment of a premium. How much you may buy is not open-ended: it is fixed by your Table 12 road-width band. In the suburbs it is 0.50 on every road of 9 m and above; in the Island City it runs from 0.50 to 0.84 depending on the band. The premium is charged at 50% of the land rate in the Annual Schedule of Rates (ASR) for FSI 1, under Regulation 30(A)(6). The ASR land rate is notified locality by locality, so the rupee amount is specific to your plot — take the rate for your ward from the ASR and apply the 50% to it. If anyone quotes 60%, that is the draft figure; the sanctioned regulation says 50%, and the difference is a fifth of your premium bill.
• Transferable Development Rights (TDR) — dealt with under DCPR 2034 Regulation 32. TDR is development potential generated on one plot (for example, when land is surrendered for a public purpose such as a road or amenity) that can be "transferred" and loaded onto a different receiving plot instead of being used where it arose. How much TDR your plot can absorb is also capped by the Table 12 band: nil only on a road of less than 9 m, rising to a maximum of 1.00 in the suburbs and 0.83 in the Island City on roads of 27 m and above.

Stacked together — base FSI, fungible area, premium FSI, TDR and any redevelopment incentive — these decide the total buildable area. To see how the base and additional components add up for your plot, use the additional area calculator.

The 33-series: the redevelopment incentive regulations

Old buildings are usually not worth redeveloping on base FSI alone — after rehousing every existing member there would be little or nothing left for the builder to sell. The regulations that fix this sit in the Regulation 33 family. They grant extra FSI or incentive area for specific kinds of redevelopment, so that a builder can rehouse existing members and still have a saleable portion left over. The main ones for Mumbai societies are:

Note: Regulation 33(14) is sometimes quoted for slum schemes. It is not. In the sanctioned DCPR 2034, Regulation 33(14) deals with the shifting of cattle sheds outside Greater Mumbai. Slum rehabilitation is Regulation 33(10).

A "cluster" here uses the DCPR 2034 definition — any defined area with proper access made up of dwelling units, buildings and chawls — which is why 33(9) can combine several societies and structures into one scheme. Cessed buildings are old structures that pay a repair cess, and their redevelopment often involves the Maharashtra Housing and Area Development Authority under the MHADA Act, 1976. Regulations 33(5) (MHADA layouts), 33(9)(A), 33(9)(B) and 33(10)(A) cover further categories of redevelopment scheme; where they apply, the same special rehabilitation carpet-area meaning explained above is used to measure each member's entitlement. One figure to keep straight: the BDD chawl cluster schemes under 33(9)(B) give an eligible slum dweller 25 sq m (269 sq ft), while general SRA schemes under 33(10) give 27.88 sq m (300 sq ft). Both are live — quote the one that matches your regulation.

Under 33(7), the incentive is set by the number of plots — and that is negotiable

Most 33-series numbers depend on your plot. One does not. Under Regulation 33(7), the incentive FSI a cessed-building scheme earns is fixed by how many plots are in the scheme, and so is the extra carpet area every occupier receives. Nothing about land rates enters into it.

Source: DCPR 2034 (sanctioned), Regulation 33(7) clause 5. The draft version showed 65%, "three" plots and 5% / 10% extra carpet — those figures were not sanctioned.

Read that table as a negotiating fact, not trivia. A cessed society that joins five neighbouring plots into one composite scheme moves the incentive from 50% to 60% and adds 8% to every member's rehab carpet. Reach six plots and it becomes 70% and 15%. On a 500 sq ft flat that is 40 sq ft or 75 sq ft, for no money and no extra FSI purchase. Under 33(7) each occupier is also guaranteed the carpet actually occupied, subject to a floor of 27.88 sq m (300 sq ft) and a ceiling of 120 sq m (1,292 sq ft), and the scheme needs the irrevocable written consent of not less than 51% of occupiers, certified by the MBRRB.

For deeper, scheme-specific explanations, see our guides on DCR 33(7) cessed buildings and cluster redevelopment. Confirm the buildable area for your own plot with the FSI calculator.

Table 12: how road width sets your FSI

The single fact that decides your permissible FSI is the width of the road your plot faces. DCPR 2034 sorts every residential and commercial plot into five road-width bands in Table 12, and each band carries a fixed quantum of premium FSI and TDR on top of the basic zonal FSI. The four break points are 9 m, 12.00 m, 18.00 m and 27 m.

Read the first two bands carefully, because a lot of advice gets them the wrong way round. The sanctioned table reads "Less than 9 m" for the basic band and "9 m & above but less than 12.00 m" for the next one. So a road measuring exactly 9.00 m falls in the higher band. It carries permissible FSI 2.00 — not 1.33 and not 1.00. Only a road of less than 9 m is capped at the basic FSI with no premium FSI and no TDR. Nine metres is one of the commonest layout widths in Mumbai, so this one boundary decides real projects: if someone tells your society that a 9 m road caps you at basic FSI, they are reading the draft regulation, not the sanctioned one. Measure your road, find your band, and you have your number.

Island City — basic FSI 1.33

Source: DCPR 2034 (sanctioned), Table 12 — Island City, residential and commercial.

Suburbs and extended suburbs — basic FSI 1.00

Source: DCPR 2034 (sanctioned), Table 12 — suburbs and extended suburbs, residential and commercial.

The same thing in plain words, for anyone who skips the tables. In the Island City, a plot on a road of less than 9 m is stuck at FSI 1.33. Reach 9 m and it jumps to 2.00. From 12.00 m it is 2.40, from 18.00 m it is 2.70, and from 27 m it reaches the maximum of 3.00. In the suburbs, the basic FSI is lower at 1.00, but the same 9 m step doubles it to 2.00; then 2.20 from 12.00 m, 2.40 from 18.00 m and 2.50 from 27 m. Notice that the biggest single jump anywhere in the table is that first step at 9 m — in the suburbs it doubles your FSI. If your society's access road is anywhere near 9 m wide, get it measured properly before you accept anybody's feasibility number.

Remember that the premium FSI column is not free. It is charged at 50% of the ASR land rate for FSI 1 for your locality, under Regulation 30(A)(6). So the cost of the premium component is: premium FSI × plot area × 50% of the ASR land rate. The ASR rate changes from locality to locality, so plug in the rate notified for your ward. Using premium FSI and TDR is optional, and Regulation 30(A)(6) lets you take them in any order, up to the limits in columns 5 and 6 of Table 12.

Source: DCPR 2034 (sanctioned), Table 12 and Regulation 30(A)(6). Figures are before fungible compensatory area and before any 33-series redevelopment incentive. The ASR rate used is an illustration — take the notified rate for your own ward.

One thing to settle before you multiply: which plot area you multiply by. Regulation 30(A)(2) is explicit — permissible FSI is computed on the plot area excluding the area under DP roads, roads for which a sanctioned Regular Line is prescribed under the MMC Act, land covered by Regulation 16, amenity plots under Regulation 14, and any DP reservation to be surrendered to the MCGM under Regulation 17. In other words, the multiplier is your net plot area, not the figure on your property card. A society whose 1,200 sq m plot loses 200 sq m to a DP road computes FSI on 1,000 sq m, not 1,200. If a feasibility note quotes "gross plot area", ask which regulation it is relying on — the draft said gross, the sanctioned regulation reversed it.

The surrendered land is not lost value. Where your society actually hands it over to the MCGM, DCPR 2034 allows TDR for it under Regulation 32, Table 12(A), which can be loaded back on the balance plot within the admissible TDR limit; for road widening or a DP road the equivalent FSI may even be used over and above the column 7 permissible FSI. And if planning constraints stop you from using even the basic zonal FSI, the unused built-up area can be claimed as TDR.

A few pockets of Greater Mumbai sit below the Table 12 bands altogether. The area earmarked for BARC in M Ward is limited to an FSI of 0.75. The villages of Akse and Marve, and the CRZ-affected areas of Erangal in P/North Ward — excepting the gaothan proper — are limited to 0.50. If your society falls in one of these areas, a wide road does not lift you above those limits.

How plot size changes your entitlement

Road width sets the FSI figure. The other physical control is plot size and shape, which decides how much of that FSI you can actually build. Larger plots must set aside statutory open space and, where applicable, amenity space — space reserved for public amenities such as recreational open spaces, welfare centres, markets or schools, as defined in DCPR 2034. Setbacks, marginal open spaces and layout rules all consume part of the plot before FSI is even applied. This is why two societies with the same paper FSI can end up with very different real outcomes. To model how road width and plot area affect the additional area available to you, use the additional area calculator.

How it all becomes your new flat

Every layer above finally converts into two buckets of construction:

• The rehabilitation (rehab) component — the new flats for existing members. Under the 33-series schemes this is measured in carpet area, usually your present carpet area plus an agreed increase.
• The free-sale component — the flats the builder sells in the open market to recover construction cost and earn a profit.

The total buildable area (base FSI + fungible area + premium FSI + TDR + incentive) is split between these two buckets. The larger the incentive your plot qualifies for, the more room there is to give members bigger flats, a healthier corpus and fair rent during construction — while still leaving the builder a viable sale component. This is exactly why understanding DCPR 2034 before you negotiate is worth the effort: the regulations set the size of the pie, and your agreement decides how it is shared. Once you have competing proposals, put them side by side with the offer comparison tool so the promised carpet area, corpus and rent can all be judged on the same basis.