The short answer: the plot does not decide. The road does. UDCPR separates Residential Zone R-1 from Residential Zone R-2 by the width of the road the plot abuts, and by nothing else.
Key takeaways
- R-1 covers residential plots on roads below 9.0 m in a congested area, and below 12.0 m outside one.
- R-2 covers plots on roads of 9.0 m and above in a congested area, and 12.0 m and above outside one.
- In C Class Municipal Councils, Nagar Panchayats and Regional Plan areas, the 12.0 m figure becomes 9.0 m.
- The R-2 definition counts an existing or proposed width, so a Development Plan widening can change the zone before it is built.
- Neither plot size nor plot shape enters the test.
The test
Banded by width of the road the plot abuts
- Congested area, below 9.0 mResidential Zone R-1, under Regulation 4.3
- Congested area, 9.0 m and aboveResidential Zone R-2, under Regulation 4.4
- Non-congested area, below 12.0 mResidential Zone R-1
- Non-congested area, 12.0 m and aboveResidential Zone R-2
- C Class Councils, Nagar Panchayats and Regional Plan areasThe 12.0 m figure above is replaced by 9.0 m for non-congested areas
Source: Chapter 4, Regulations 4.3 and 4.4, UDCPR as updated 30 January 2025
Chapter 4, Regulation 4.3, UDCPR as updated 30 January 2025 describes R-1 as including residential plots abutting on roads below 9.0 m in width in a congested area shown on the Development Plan, and on roads below 12.0 m in width outside a congested area.
Chapter 4, Regulation 4.4, Residential Zone - R-2* describes R-2 as including residential plots abutting on roads having an existing or proposed width of 9.0 m and above in a congested area, and 12.0 m and above in a non-congested area.
What changes the answer
Three things move a plot across the line, and none of them is a change to the plot.
A proposed widening. R-2 counts an existing or proposed width, so a road shown wider on the Development Plan can place a plot in R-2 before any widening is executed. The prescribed width on the plan is therefore the figure to obtain, not the width you can measure today.
The authority's class. In C Class Municipal Councils, Nagar Panchayats and Regional Plan areas the non-congested threshold drops from 12.0 m to 9.0 m, so the same road places a plot in different zones in different places.
Congested status. The threshold itself changes with it, and congested status comes from the Development Plan rather than from how built up an area looks.
Why it matters beyond the label
Road width is the most repeated variable in this code, and the zone test is only its first appearance. Table 6-A in the congested area rules sets basic FSI at 1.50 below a 9.0 m road with no premium and no TDR, against 2.00 with both at 9.0 m and above. Regulation 6.10 caps height at 24.0 m below a 12.0 m road. Table 8-B and Table 8-C then set parking by use and authority.
So the same measurement that decides whether a plot is R-1 or R-2 is also deciding, separately, how much may be built on it and how tall it may go.
Related rule cards
- The congested area regime and its 9 m cliff
- Height by authority, and the 24 m road gate
- The reserved plot next to you, and zone equivalency
Where the filings come in
MahaRERA does not record a project's zone or the width of its road, so this is answered from the Development Plan and the prescribed road width. What the register does carry, on essentially every project, is the filed land area and the buildings and floors actually declared, which is a useful cross-check on what a plot of that size in that location has supported.
Every filing is free to read at reragenie.com. ReraGenie's project analysis, Rs 2,999 for one project, reads the full filing and the documents behind it.
Source: Unified Development Control and Promotion Regulations for Maharashtra, UDCPR as updated 30 January 2025. Sanctioned under the Maharashtra Regional and Town Planning Act, 1966.
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