OSR fee calculator for a layout or site in Tamil Nadu
Enter the site area and the guideline value of the land. You get whether open space must be reserved, how much land that is, whether you may pay a fee instead or must gift the land to the local body, and the fee in rupees, under the CMDA and DTCP rules.
Free. Sign in once with your phone to run it.
- Or reserve as land
- 500 sq.m, by gift deed
- Fee worked out on
- 200 sq.m
- Maintained by
- Local body
Freeevery run
What we need
One thing at a time. Fill it in and press Run.
The answer
Worked out from the figures you gave, with the rule behind each number.
Nothing run yet. The answer appears here with everything this mini adds:
- Gift or pay decided by the site size and jurisdiction
- The rupee figure from the guideline value
- Free
OSR, briefly
OSR is the share of a layout or large site that the Tamil Nadu building rules set aside as open space for parks and play areas. Above 3,000 sq.m it is 10% of the area, given as land or, in some cases, paid for as a fee in lieu.
- Up to 3,000 sq.m
- Nil
The first 3,000 sq.m of any site owes no open space and no fee, whatever the use or the date of sub-division.
- 3,000 to 10,000 sq.m
- 10% or a fee
Reserve 10% of the area as open space, or pay the guideline value of a tenth of the area above the first 3,000 sq.m.
- Above 10,000 sq.m
- Land only
10% must be reserved as land and handed over. The fee is not accepted, except for an addition to an existing development.
How to calculate the OSR fee
- 1
Enter the site area
In sq.m, sq.ft or acres, and pick CMDA, DTCP urban or DTCP rural.
- 2
Add the guideline value
The registration department's value for the land, per sq.m or per sq.ft. Without it you get the rule but no rupee figure.
- 3
Read gift or pay
The answer says whether land must be given, whether the fee is an option, and the fee in rupees.
When it helps with land
Costing a layout
Put the OSR fee, or the land you lose to open space, into the numbers before you buy land to plot.
Gift or pay
Between 3,000 and 10,000 sq.m you can choose. See what the fee would be against the land you would give up.
Industrial and institutional sites
These keep the open space instead of gifting it, and maintain it under the local body. The answer changes with the development type.
This is an estimate from the rules for planning, not a demand. The authority measures the 10% net of layout roads and fixes the final figure, so confirm with CMDA, DTCP or the local body before budgeting.
Questions people ask
How is the OSR fee calculated?
For a site between 3,000 and 10,000 sq.m, the fee is the guideline value of a tenth of the area above the first 3,000 sq.m. For a 5,000 sq.m site at ₹4,000 per sq.m, that is 200 sq.m, or ₹8,00,000, against 500 sq.m of land if you reserve it instead.
Is OSR needed for a small plot?
No. The first 3,000 sq.m of any site owes no open space and no fee, so a site of 3,000 sq.m or less owes nothing.
Can I pay instead of leaving land?
Between 3,000 and 10,000 sq.m, yes. Above 10,000 sq.m the land must be reserved and handed over, and a fee is accepted only for an addition to an existing development.
No rupee figure?
Give the guideline value of the land. Without it only the rule applies. The guideline value mini finds it for your village or street.
Is this the OSR land record?
No. OSR here means open space reservation under the building rules. Searches for an OSR land record are after a different document.
Does the sub-division date change the answer?
No. It is shown against the master plan cut-off, but the first 3,000 sq.m of any site owes nothing whatever the date.
Is this free?
Yes.