[Skip to content](#main-content)

Features

[Land Lead Management](/features/land-lead-management)[Field Execution](/features/field-execution)[Pricing Intelligence](/features/ai-pricing)[Document Verification](/features/document-verification)[Task Management](/features/task-management)[Competitor Intelligence](/features/competitor-intelligence)[Location Intelligence](/features/location-intelligence)[Smart Dashboard](/features/smart-dashboard)[Audit Trail](/features/audit-trail)[View all features](/features)

Solutions

For your business

[Real Estate Developers](/solutions/real-estate-developers)[Banks & NBFCs](/solutions/banks-nbfcs)[Land Valuation Teams](/solutions/land-valuation-teams)[Legal Teams](/solutions/legal-teams)

For your team

[Decision Maker](/roles/decision-maker)[Team Lead](/roles/team-lead)[Field Team](/roles/field-team)

By Use Case

[Land Acquisition](/solutions/land-acquisition)[Site Analysis](/solutions/site-analysis)[Portfolio Management](/solutions/portfolio)[View all roles](/roles)

Compare

[Proquiro vs Excel](/vs/excel)[Proquiro vs Google Sheets](/vs/google-sheets)[Proquiro vs WhatsApp](/vs/whatsapp-tracking)[Proquiro vs Manual Process](/vs/manual-process)[Proquiro vs LAMS](/vs/lams)[Proquiro vs ERP](/vs/erp)

Resources

[Land Area Converter](/tools/land-area-converter)[Price Per Sq Ft](/tools/price-per-sqft-calculator)[ROI Calculator](/tools/land-roi-calculator)[OSR Calculator](/tools/osr-calculator-india)[Due-Diligence](/tools/land-due-diligence-checklist)[Site Visit](/tools/site-visit-checklist)[Legal Documents](/tools/document-readiness-checker)[Excel Template](/tools/excel-template)[All tools](/tools)

[Pricing](/pricing)

[ Sign in ](https://app.proquiro.com)[Request a Demo](/contact/sales)[Start at ₹639/mo](https://app.proquiro.com/users/sign%5Fup?plan=solo)

Glossary

# Survey Number

A unique numeric identifier assigned to each land parcel by the Revenue Department during the original land survey.

## What is a Survey Number?

A survey number is the unique identifier assigned to every land parcel in revenue records during the original land survey conducted by the government. It remains constant unless the land is formally subdivided. The format varies by state — in Tamil Nadu, survey numbers are typically numeric with optional subdivision indicators like 123/2A, where 123 is the parent survey number and 2A is a subdivision. Every revenue document — Patta, Chitta, EC, FMB — references this survey number.

## Survey number in land acquisition workflows

The survey number is the primary key for all land records. During due diligence, every document must be cross-referenced using the survey number to confirm consistency — the Patta, Chitta, EC, and FMB should all reference the same survey number with the same extent. GPS coordinates from a site visit should map to the correct survey number boundaries. Any inconsistency in survey numbers across documents is a serious red flag that requires immediate investigation.

## Sub-divisions and re-surveys

When land is subdivided — through sale of a portion, family partition, or development — new sub-survey numbers are created under the parent survey number. The Revenue Department records this subdivision in the A-Register and issues new Pattas for each sub-divided parcel. Periodic re-surveys by the government may reassign survey numbers entirely. Always verify the latest survey number with the Taluk office, especially for properties that have been subdivided multiple times.

## Related Terms

[Patta (Land Ownership Certificate)A revenue document issued by the Tamil Nadu government that records the current owner of a land parcel.](/glossary/patta)[Chitta (Land Revenue Record)A revenue extract maintained by the Tamil Nadu government showing land classification, extent, and tax details for a survey number.](/glossary/chitta)[Field Measurement Book (FMB)A parcel-level survey record that can show recorded geometry, measurements, subdivision, and adjoining survey references where those details appear.](/glossary/field-measurement-book)[A-Register (Village Land Register)The primary land register maintained at the village level by the Revenue Department, recording ownership, classification, and extent of every survey number.](/states/tamil-nadu/a-register)

## Keep exploring

Connect your land intelligence workflow with these powerful tools.

[Tamil Nadu Land Record GuidesChoose the official record workflow after confirming the current survey identifier.](/states/tamil-nadu)[Land Lead ManagementOrganize and track land leads by survey number across your portfolio.](/features/land-lead-management)[Location IntelligenceMap survey numbers to geographic coordinates for spatial analysis.](/features/location-intelligence)

Last verified 30 September 2026

## The land acquisition software your team  
 needs to close with confidence.

Start with Solo from ₹639/mo · Cancel anytime.

[Request a Demo](/contact/sales)[Start Solo — ₹639/mo](https://app.proquiro.com/users/sign%5Fup?plan=solo)