Patta, FMB, EC and Land Survey – What Is the Difference?

When dealing with land or property, people often hear terms such as Patta, FMB, Survey Number, Subdivision and Encumbrance Certificate (EC). These records are important, but they do not all provide the same information. A physical land survey is also different from checking property documents. Understanding these differences can help property owners make better decisions.

Property Records and Land Survey Are Not the Same

One of the most common misunderstandings is assuming that having property documents means the exact physical measurements of the property are already clear.

Documents provide recorded information about the property, while a field survey deals with the actual land on the ground.

Both can be important, but they answer different questions.

What Is Patta?

Patta is an important revenue record connected with land. It generally contains information relating to the land and the person recorded in the relevant revenue records.

Depending on the record, information may include:

• Name recorded for the land
• Survey Number
• Subdivision details
• Classification of land
• Recorded extent or area

What Is a Survey Number?

A Survey Number is used to identify a particular land parcel or larger survey block within the revenue survey system.

When a larger survey parcel is divided, additional Subdivision Numbers may be created to distinguish individual portions.

This is why the correct Survey Number and Subdivision details are important when discussing a property.

What Is FMB?

FMB stands for Field Measurement Book. It contains survey-related sketches and measurements associated with surveyed land parcels.

FMB information may help in understanding:

• Recorded land shape
• Survey-side measurements
• Subdivision information
• Relationship with adjoining survey parcels
• Survey reference information

However, an FMB sketch is still a record. A professional field survey may be required to relate available survey information to the present physical condition of the property.

What Is an Encumbrance Certificate?

An Encumbrance Certificate (EC) provides information about registered transactions relating to a property for a selected period.

It is commonly reviewed during property transactions to understand registered dealings relating to the property.

However, an EC does not tell you the actual length, width, boundary position or physical shape of the land.

What Does a Physical Land Survey Tell You?

A professional land survey focuses on the actual site. Depending on the purpose of the survey, field measurements may help determine:

• Actual property dimensions
• Individual side measurements
• Corner positions
• Property shape
• Total measured area
• Coordinates
• Ground elevations
• Existing buildings and structures
• Roads, walls and other physical features

Why Documents Alone May Not Be Enough

A property document may mention the recorded area, but the buyer may still need to understand how that property exists physically on the ground.

For example, knowing that a property contains 2,400 sq.ft does not automatically tell you:

• The length of the front side
• The rear width
• The length of both side boundaries
• The exact corner positions
• Whether the plot is regular or irregular
• Where existing structures are located

Why Field Measurement Alone Is Also Not Enough

The opposite mistake can also happen. Measuring a piece of land physically does not by itself confirm legal ownership.

A surveyor can measure the site and provide field information, but legal ownership, title validity and legal rights should be reviewed using the appropriate records and qualified professionals.

Before Buying Land, What Should You Check?

Property buyers should avoid depending on only one source of information. Depending on the property, it may be useful to review:

• Sale Deed and relevant title documents
• Patta details
• Survey Number and Subdivision
• Available FMB information
• Encumbrance Certificate
• Planning or layout approvals where applicable
• Access to the property
• Actual field dimensions
• Existing physical boundaries and structures

Why Survey Number and Subdivision Matter

When requesting a survey, providing only the owner's name or approximate location may not be enough.

Survey Number and Subdivision information can help identify the relevant land parcel more clearly before field work is planned.

This becomes particularly important in areas where multiple adjoining parcels have similar access or appearance.

Do Old Boundary Stones Prove the Exact Boundary?

Old stones, fences and walls can be useful field references, but they should not automatically be assumed to represent the exact surveyed boundary.

Physical markers may be disturbed, replaced or moved over time. Proper field investigation and measurement may be required when the exact property position needs to be understood.

When Is a Land Survey Useful?

Property owners may consider a professional land survey:

• Before buying a property
• Before selling land
• Before constructing a house
• Before building a compound wall
• Before installing permanent fencing
• Before subdividing land
• When side measurements are unclear
• When planning a development project
• When topographic information is required
• When coordinates or levels are required

Which Survey Technology May Be Used?

The appropriate technology depends on the purpose, size and condition of the site.

Total Station Survey

Total Station equipment is commonly used for detailed measurements, coordinates, angles, elevations and construction setting-out.

DGPS / GNSS Survey

DGPS/GNSS technology can support coordinate establishment, survey control, larger properties and georeferenced survey requirements.

Drone Survey

Drone surveying can support suitable large-area mapping and topographic applications where aerial data is useful for the project.

What Should You Share With a Surveyor?

Before arranging a field visit, provide as much relevant information as possible.

• Property location
• Village or town
• Taluk and district
• Survey Number
• Subdivision Number
• Approximate land area
• Purpose of the survey
• Available FMB or property records
• Google Maps location

The Important Takeaway for Property Owners

Patta, FMB, EC, Survey Number and physical land measurement are all related to property, but they serve different purposes.

A careful property decision should not depend only on one document, one physical marker or one measurement.

Understanding both the available records and the actual condition of the land can provide much better clarity before buying, building or developing property.