Is there any specific rules to be followed while constructing compound walls in curves or corners? The KERALA MUNICIPALITY BUILDING RULES 1999 shall apply. Refer S.62
62. Conditions regarding set back.- (1) The minimum distance between the plot boundary abutting any street other than
National Highways, State Highways, district roads and other roads notified by the
municipality and the building other than a compound wall or fence or outdoor display
structure, shall be 2 metres:Provided that any restriction under street alignment or
building line or both, if any fixed for the area and any development plan or any detailed
town planning scheme or approved road widening proposal or any other rules or byelaws
shall also apply simultaneously to all buildings
As per the above provision, you need to check the approved plan for that location and find out if there is a deviation as per the rules so that the encroachment will be removed by the town panchayat.