Patta is a legal document issued by the Government in the name of the actual owner of a particular plot of land. It can also be issued for lands having buildings or individual houses etc. constructed on them.

Patta What Is It? Why It Is Called As?

The government declares the actual name of the owner of the particular plot of land. The land that is purchased for any purpose must have a ‘Patta’ to construct any buildings, bungalows, anything. When a group of owners purchases the same piece of land, then all the owner’s names are mentioned in the patta that is issued for the main person.

Chitta What Is It? Why It Is Called As

This registered patta extract is called as Chitta as it gives the entire ownership details about that specific land. The important details available are

•     Village, Taluk, District, Land Owner’s  name with Father’s name,

•    Patta number,

•    Survey Number with sub-division details.

This is managed and maintained by Village administrative officers and Taluka office.

Field Measurement Book (FMB) sketch is a compilation of map data that is stored in volumes by the Government at the respective Tahsildar office. In FMB’s, the individual survey number sketches are maintained at a scale of 1:1000 or 1:2000. Each survey number is divided into various sub-divisions. Each sub-division number is owned by a property owner. FMB denotes the precise dimensions of the land. Hence, in a property purchase transaction, FMB sketch is used to verify the land measurements and boundaries of the property.

Components of FMB

The following are the various components of FMB:

  1. G-line
  2. F-line
  3. Subdivision lines
  4. Ladder
  5. Extension lines
  6. Neighboring field survey numbers


G-line outlines the making of the entire sketch. It is an imaginary line that converts the sketch into various sizes of triangles to fix the boundary lines and the various points in the sketch.  Errors in G-line will affect all the pertinent calculations.


F-line signifies the actual field boundaries in the outer lines of the sketch. Its points are fixed with reference to its offset distance from the G-line.

Subdivision Lines

Subdivision lines demarcate a small portion of land within a survey number. A sub-divisional extent of a polygon is directly correlated to the extent found for the particular subdivision. The subdivision lines are generally defined through a ladder, or the likes of it; except for the graphical representation in FMB.


The field line points are defined with reference to an offset distance from the G-line. The offset distance may deviate to the left or right side of the G-line. This left or right angle deviation is highlighted by the ladder. Converting the ladder details into electronic data can produce the outline of the FMB sketch.

Extension Lines

Each survey number field forms a crucial part of the village map, and as a result of it, other fields surround each sketch. The precise direction wherein the subject field joins the neighboring field is depicted on the FMB as an extension line.

Neighbouring Field Survey Numbers

The other fields surround each of the survey sketches. These surrounding field numbers are marked around each FMB. This facilitates the conversion of FMB’s into D-sketches, and so on and so forth.

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