Pull the official Field Measurement Book or Town Survey Land Record sketch for any Tamil Nadu survey number. Rural, Natham, and Urban modes — free, instant, no signup.
The FMB confirms what the land looks like, not who owns it. Reconcile every line on the sketch against the deed and revenue records.
Number on the FMB matches the patta and sale deed exactly.
Sub-divisions in the FMB align with the deed schedule and any partition.
FMB extent matches the deed; large gaps need a re-survey.
North/south/east/west match the deed schedule, not just the survey.
FMB orientation and shape match the layout drawing or site plan.
Wetland/dryland/natham classification matches the chitta record.
FMB shows a road/access path; landlocked plots need an easement.
No overlap into adjacent surveys or government poramboke land.
If any of the patterns below show up on the sketch, pause the deal and get a licensed surveyor or advocate to reconcile before paying advance.
FMB survey/subdivision number does not match the patta or chitta record — the holder on revenue records is not the surveyed parcel.
FMB shows the parcel overlapping into adjacent surveys or government poramboke land — title transfer will be challenged.
Sub-divisions in the deed schedule do not appear on the FMB, or vice versa — a partition or re-survey was never registered.
FMB extent is materially different from the deed extent — common when partitions or government acquisitions were not reflected.
Neighbours on the FMB do not match the schedule of the sale deed — the property surveyed is not the property being sold.
Confirm survey number, subdivision, village/town, taluk, and district against the seller-supplied patta or latest sale deed before requesting the sketch.
Use Rural FMB for villages, Natham FMB for house-site (natham) parcels with the same upstream as rural, and Urban TSLR Sketch for properties inside town or city limits.
For rural and natham parcels we pull from CollabLand-TN. For urban parcels we use UrbanTamilnilam to resolve ward/block/survey/subdivision before fetching the TSLR sketch.
Official PortalMatch the sketch boundaries, neighbours, and extent against the sale-deed schedule. Mismatches between the FMB and deed are a leading source of land-purchase disputes.
Sketches must be reconciled with the Encumbrance Certificate, patta/chitta, and field-level Adangal record before token advance.
The sketch is one essential check in a multi-step diligence — never the only one.
| Document | What it tells you |
|---|---|
| FMB / TSLR sketch | Survey-level boundary diagram of a parcel — what the land looks like and where the boundaries sit. |
| Patta / chitta | Revenue holder record showing who is taxed for the land — useful but not proof of marketable title. |
| Adangal / Field-level register | Field-level cropping/land-use register maintained at the village office. |
| Encumbrance Certificate | Registered transactions against the property at the SRO — separate document, complementary check. |
Sources: CollabLand-TN, UrbanTamilnilam, and Proquiro Due Diligence.
FMB stands for Field Measurement Book. It is the official survey-level boundary diagram of a parcel maintained by the Tamil Nadu Survey Department. The FMB shows the exact dimensions, shape, and adjoining survey numbers of a particular survey/subdivision.
For urban properties inside a town survey area, the equivalent document is the TSLR sketch (Town Survey Land Record).
Pull the FMB or TSLR before any land-purchase token advance, before approaching a bank for a property loan, when there is a dispute about boundaries with a neighbour, or when sub-dividing a parcel.
It is also useful when a sale deed schedule looks ambiguous — the FMB is the authoritative reference for what the boundaries actually are.
Rural FMB and Natham FMB share the same upstream data source — CollabLand-TN — and are pulled the same way. The only difference is the land classification: natham parcels are house-site land inside revenue villages.
Urban TSLR sketches come from UrbanTamilnilam and require ward, block, survey, and subdivision codes. They cover town-survey areas inside municipalities and corporations.
No. The FMB confirms what the land looks like on the survey map, not who owns it or whether there are encumbrances. Clear title still requires patta/chitta verification, original sale deed review, the Encumbrance Certificate, and an advocate title opinion.
Treat the FMB as one essential check in a multi-step diligence — not a standalone proof of title.
The sketch is fetched live from the official government portal at the time you click search. It reflects the latest map the Survey Department has published for that survey/subdivision.
If the parcel was recently sub-divided and the Survey Department has not yet updated CollabLand or UrbanTamilnilam, the new sub-divisions may not appear yet.
Urban survey numbers in Tamil Nadu are scoped within a specific ward and block of a town survey area, not at the village level. Without ward/block we cannot disambiguate, since the same survey number can exist in multiple blocks of the same town.
The cascade dropdown above pulls the ward, block, and survey list for your selected town directly from UrbanTamilnilam.
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