What is the F-line in a survey? Meaning, sketch & F-line application
'F-line' means two different things. On an FMB sketch it is the field boundary of a survey number. In Andhra Pradesh and Telangana an 'F-line application' is a petition to re-fix that boundary on the ground. Here's both, explained.
Search for 'F-line' and you'll find two quite different answers, because the term is used two ways in Indian land survey. On a map, the F-line is a boundary drawn on the FMB sketch. In Andhra Pradesh and Telangana, an 'F-line application' (or F-line petition) is a formal request to the survey department to mark that boundary out on the ground. This guide covers both so you know which one you actually need.
Meaning 1: the F-line on an FMB sketch
F-line stands for Field line. On a Field Measurement Book (FMB) sketch or a village survey map, the F-line is the boundary of a single field — one survey number or subdivision. Every parcel on the sheet is enclosed by its own F-line, so a sheet has many F-lines. This is the line you trace to see the exact shape and extent of your plot.
- F-line (Field line)
- The boundary of one field / survey number inside the village. Many per sheet — one around each parcel.
- G-line (Gramam line)
- The single outer boundary of the whole revenue village. One per village.
Meaning 2: the F-line survey / F-line application
In Andhra Pradesh and Telangana, landowners frequently talk about applying for an 'F-line' — sometimes written F-Line survey, F-line petition, or 'F line application online'. This is a request to the Mandal Surveyor (through the Tahsildar / revenue office) to physically re-lay the field boundaries of a survey number on the ground, exactly as recorded in the FMB. People file it when a neighbour has encroached, when boundaries are unclear before a sale or construction, or when a plot is being sub-divided.
When you need an F-line survey
- A neighbour's fence, wall or crop appears to cross into your survey number.
- You are buying or selling and want the recorded boundary pegged on the ground first.
- You are splitting a survey number and need each subdivision marked.
- A bank, court or panchayat has asked for a surveyor-certified boundary.
How to apply for an F-line survey (AP & Telangana)
- Collect your record of rights (Adangal / Pahani or 1-B) and the FMB / cadastral sketch for the survey number.
- File the F-line application with your Mandal Revenue Office / Tahsildar addressed to the Mandal Surveyor; many mandals also accept it through the Meebhoomi (AP) or Dharani (Telangana) grievance / land-services channels.
- Pay the prescribed survey fee and note the acknowledgement number.
- The surveyor visits, lays out the F-lines against the FMB and marks the corners; you receive a demarcation / survey report.
Frequently asked questions
What is the full form of F-line?+
On a survey map, F-line stands for Field line — the boundary of one field or survey number on the FMB sketch. It is different from the G-line (Gramam line), which is the outer boundary of the whole village.
What is an F-line application in Andhra Pradesh or Telangana?+
It is a petition to the Mandal Surveyor, filed through the Tahsildar / revenue office, asking them to physically re-mark the field boundaries of a survey number on the ground as recorded in the FMB. It is commonly used to settle encroachment or boundary disputes.
How do I apply for an F-line survey online?+
Keep your Adangal/1-B and the FMB sketch ready, then file the F-line application at your Mandal Revenue Office; many mandals also accept it through the Meebhoomi (AP) or Dharani (Telangana) land-services / grievance channels. Pay the survey fee and note the acknowledgement number for follow-up.
What is the difference between the F-line and the G-line?+
The F-line is the boundary of a single field or survey number, and there are many on a sheet. The G-line is the single outer boundary of the entire revenue village.