Every other city entry in Chapter 10 adjusts a rule. Ulhasnagar's exists because of a statute passed for one city, and all five of its sub-regulations are about buildings that were put up without permission.
Key takeaways
- Regulation 10.8.1 refers unauthorised development in Ulhasnagar to the Regularisation of Unauthorised Development in the City of Ulhasnagar Act, 2006.
- Regulation 10.8.2 caps permissible FSI at 4.00 plus ancillary FSI, and requires anything built above that to be demolished before the structure can be regularised.
- Regulation 10.8.3 creates a protected FSI for structures too unstable or too dilapidated to regularise: the lesser of the consumed FSI measured to the P-line and the 4.00 ceiling, with incentive FSI allowed on top.
- Regulation 10.8.5 sets the minimum Urban Renewal Scheme cluster at 4000 sq m in congested and non-congested areas alike. The general rule in 14.8.1(i) is 10,000 sq m in non-congested areas, so this is a 60 percent cut.
- On ReraGenie's registry copy captured 11 August 2026, all 160 published Ulhasnagar taluka projects file floor counts, with a median tallest building of 8 floors and a 90th percentile of 28.
An entry that starts by pointing at a statute
Chapter 10, Regulation 10.0, UDCPR as updated 30 January 2025 applies city specific regulations notwithstanding anything else in UDCPR. Chapter 10, Regulation 10.8, Ulhasnagar City Municipal Corporation then opens in a way no other city entry does.
Chapter 10, Regulation 10.8.1 provides that regulation for unauthorised development in the Corporation shall be governed by the Regularisation of Unauthorised Development in the City of Ulhasnagar Act, 2006. Everything that follows in 10.8 is the development control side of that statute.
That is why this entry reads differently from its neighbours. Pune's chapter decides how tall a new building may be. Ulhasnagar's decides what happens to buildings that already exist and should not.
The ceiling, and what sits above it
Chapter 10, Regulation 10.8.2 is short and has a sharp edge.
For the purpose of 10.8.1, permissible FSI shall not be more than 4.00 plus the ancillary FSI permissible under these regulations. And where a structure has consumed more than that, the additional construction shall be demolished before regularisation of such structure.
Banded by what the structure consumed, and whether it is sound
- At or below 4.00 plus ancillaryWithin the permissible FSI for regularisation under the 2006 Act
- Above 4.00 plus ancillaryThe additional construction shall be demolished before the structure is regularised
- Cannot be regularised: unstable, or declared Dangerous or Dilapidated by lawful order of the Municipal CommissionerRedevelopment at protected FSI, being the lesser of the consumed FSI measured to the P-line and the figure in 10.8.2. Incentive FSI is allowed over and above it.
- Fits neither routeShall necessarily be developed under Regulation 14.8, Urban Renewal Scheme
Source: Chapter 10, Regulations 10.8.2, 10.8.3 and 10.8.4, UDCPR as updated 30 January 2025
4.00 is the highest FSI figure named anywhere in Chapter 10. It is also the only one attached to a demolition condition, which is the difference between an entitlement and a limit on amnesty. The number is not what may be built; it is how far the 2006 Act will reach backwards.
Protected FSI, and the line it is measured to
Chapter 10, Regulation 10.8.3 handles the structures the ceiling cannot help: those that cannot be regularised for lack of structural stability, or that have been declared Dangerous or Dilapidated by lawful order of the Municipal Commissioner.
For those, FSI for redevelopment is permissible to the extent of the consumed FSI of the existing structure, measured by the method prescribed in these regulations, that is the P-line, or the figure in 10.8.2, whichever is minimum. The regulation names the result: protected FSI.
Then the proviso, which is the part worth reading twice: the incentive FSI permissible for redevelopment under these regulations shall be allowed over and above the protected FSI.
Protected FSI is a floor carried across from the old building, not a budget for the new one. What a redevelopment can actually build is protected FSI plus the incentive FSI the general chapters give the scheme, and reading 10.8.3 as a cap is the mistake it invites.
The measurement is worth attention for the same reason. UDCPR uses the P-line, the periphery line of construction, for area statements, calculating each floor's area to that line and excluding ducts and voids. 10.8.3 adopts it to measure what the existing structure consumed. So the entitlement of an Ulhasnagar redevelopment turns on how that line is drawn over a building that was never drawn properly in the first place.
The cluster threshold, cut by 60 percent
Chapter 10, Regulation 10.8.4 routes what is left. Structures that cannot be dealt with under 10.8.2 or 10.8.3 shall necessarily be developed under Chapter 14, Regulation 14.8, Urban Renewal Scheme*. And structures that can be dealt with under those two shall also have the option of developing under Chapter 14, Regulation 14.8.1, Urban Renewal Scheme (URS) for Municipal Corporation Area, which is a permission rather than a requirement.
Chapter 10, Regulation 10.8.5 then changes the entry ticket for that route, and this is the most consequential line in the entry.
| Minimum area for an Urban Renewal Scheme cluster | Congested area | Non-congested area |
|---|---|---|
| General rule, Regulation 14.8.1(i) | 4000 sq.m. | 10,000 sq.m. |
| Ulhasnagar, Regulation 10.8.5 | 4000 sq.m. | 4000 sq.m. |
In a non-congested area anywhere else in a Municipal Corporation, a cluster scheme needs 10,000 sq m of assembled land. In Ulhasnagar it needs 4,000. That is a 60 percent reduction in the assembly a promoter has to complete before a scheme is possible at all, and assembly is usually the binding constraint on cluster redevelopment rather than FSI.
All other regulations of the Urban Renewal Scheme continue to apply as per 14.8, so the concession is to the threshold alone.
What the register shows
Source: ReraGenie analysis of the MahaRERA project registry, all 160 published Ulhasnagar taluka projects, every one of which files building floor counts, captured 11 August 2026
This is a small register and a complete one: 160 projects, all 160 filing floor counts. The median tallest building is 8 floors, and 75 percent sit at 11 or fewer.
The 90th percentile is 28, which is the number worth pausing on. A market whose median is 8 and whose 90th percentile is 28 is not a uniformly mid-rise market; it is a mid-rise market with a small group of much taller projects in it. Twenty eight of the 160, about 17 percent, file 17 floors or more.
Two cautions before drawing a line from the regulation to the chart. Regulation 10.8 governs Ulhasnagar City Municipal Corporation and MahaRERA records taluka, which is the usual gap in this series, though here it is narrow. And the register records what is registered under RERA: a regularisation under the 2006 Act is not itself a RERA registration, so the projects above are the redevelopment side of this story, not the regularisation side. The Act's own caseload is not visible in this data at all.
What to check for an Ulhasnagar parcel
- Establish the structure's status first, because 10.8 sorts by it: within the ceiling, above it, unfit to regularise, or none of the three.
- Get the P-line measurement done properly, since under Chapter 10, Regulation 10.8.3 it sets one half of the protected FSI and the lower of the two figures wins.
- Add incentive FSI on top of protected FSI, not into it.
- Test the Urban Renewal Scheme route even when regularisation is available, because Chapter 10, Regulation 10.8.4 keeps it open and Chapter 10, Regulation 10.8.5 makes it reachable at 4000 sq m.
- Read Chapter 14, Regulation 14.8* in full before committing to a cluster, then the UDCPR FSI rulebook for everything Chapter 10 leaves alone.
Where the filings come in
The Act decides what an old building is allowed to become. The register shows what the new one actually did. ReraGenie's project analysis, Rs 2,999 for one project, reads an Ulhasnagar project's full MahaRERA filing: the promoter's extension history with their stated reasons, the slip between original and current completion dates against the median for the same pincode, construction progress against the eleven activity checklist building by building, and complaints and litigation with case numbers. That last one matters more than usual on redevelopment, where the people waiting are often the people who were moved out. The area consolidated report covers a whole micro-market at Rs 2,999 for the first project and Rs 1,999 per additional one.
Ulhasnagar's projects sit on the Thane district page, free to browse, alongside Thane's own chapter and Mira-Bhayandar's. The question that comes before all of this is which rulebook governs your plot.
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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