Overview
In Tamil Nadu, a plot's survey number ties together your Patta, Chitta and Adangal on the state's e-Services (Land Records) portal. Zoom to your land on the map above and its survey-number boundary appears — you don't need to know the number to start.
Below: what the survey number is actually called in Tamil Nadu, which official portal to use for what, and how to find any plot's number by location.
One plot, many names — which one is the ‘survey number’?
1. Survey Number / Subdivision (சர்வே எண்):
The parcel ID; a subdivision number identifies a split of the survey number.
2. Patta (பட்டா):
The ownership / title record issued by the Tahsildar, keyed to the survey number.
3. Chitta (சிட்டா):
The land account — classification (wet/dry / nanjai-punjai), extent and pattadar.
4. Adangal / A-Register (அடங்கல்):
The holdings register listing land by survey number.
5. FMB (Field Measurement Book):
The boundary sketch for a survey number.
6. e-Services vs TNREGINET:
e-Services = revenue records (Patta, Chitta, survey number). TNREGINET = registration and the Encumbrance Certificate. Don't confuse them.
Which record, which portal — for what
Different tasks need different records and portals. Here is the map.
What you want to do
Record / term
Where — official & free
Find a survey number by location
—
The 1acre map on this page
View Patta / Chitta by survey no.
Patta · Chitta
TN e-Services: eservices.tn.gov.in
Holdings by survey no.
Adangal / A-Register
TN e-Services
Boundary sketch
FMB
TN e-Services
Encumbrance Certificate (title history)
EC
TNREGINET: tnreginet.gov.in
What you want to do
Record / term
Where — official & free
Find a survey number by location
—
The 1acre map on this page
View Patta / Chitta by survey no.
Patta · Chitta
TN e-Services: eservices.tn.gov.in
Holdings by survey no.
Adangal / A-Register
TN e-Services
Boundary sketch
FMB
TN e-Services
Encumbrance Certificate (title history)
EC
TNREGINET: tnreginet.gov.in
Don't confuse the two portals: TN e-Services gives revenue records (Patta, Chitta, survey number); TNREGINET gives the Encumbrance Certificate and registration history. A Patta is not the same as an EC.
The one thing the government portal can't do
TN e-Services asks for the survey number, owner name or account before it shows you anything. 1acre works the other way round: start from the land. Search a village or drop a pin on the plot and the survey-number boundary appears on the map. Then take that number to the official portal for the certified record. Map-first is the search a land buyer actually needs — and no state portal offers it.
Go deeper — free Tamil Nadu record guides
Get supportPrimary reference
Tamil Nadu e-Services, Land Records (Patta, Chitta, Adangal, FMB) — eservices.tn.gov.in
Registration / EC
TNREGINET — tnreginet.gov.in
Survey & settlement
TN Survey and Settlement Dept — tnlandsurvey.tn.gov.in
Coverage
All revenue villages, Tamil Nadu
Data format
Vector (GeoJSON) + Raster Tiles
Last verified
July 2026
Note
The official portal is free. Avoid look-alike sites that charge a fee to check land records.
Need Help?Get support from our team regarding any issues with the survey number
