Compensation Survey using QGIS | Buffer Analysis and Select by Location

To use GIS to solve this problem, you can follow these steps:

Data Preparation:
Ensure you have shapefiles for the existing road and the built-up areas.
Make sure the data is in the same coordinate system and projection.

Buffer Analysis:
Use the buffer tool in your GIS software to create a buffer zone around the existing road. This buffer should represent the required 20-meter right-of-way (ROW) for the new road.
Overlay Analysis:

Perform an overlay operation (e.g., intersect) between the buffer and the built-up area shapefiles. This will identify areas within the buffer where the existing built-up areas overlap with the proposed ROW.
Analysis Output:

Examine the output of the overlay analysis to identify the specific areas where there may be conflicts between the new ROW and existing built-up areas.
Decision-Making:

Use the results to make informed decisions about land acquisition, road design modifications, or zoning changes to accommodate the new road design while minimizing conflicts with existing structures.
Visualization:

Create maps and visualizations to communicate the proposed ROW and its impact on the built-up areas to stakeholders.