Boundary line :
Definition of boundary line :
A boundary line is defined as a boundary presumed to exist between two buildings on the same site.
- The boundary of the land which belongs to a building or where the land abuts a road, Railway, Canal, river and Centre Line of road, railway, canal and river.
- A relevant boundary is a boundary or National boundary that one side of the building faces and that is parallel or at an angle of a maximum of 80 degrees on that side of the building
- A national boundary is a boundary presumes to exist between two buildings on the same site
(Above image of boundary line will definitely clear your doubt.)