Based on what I understand, the charging is based on the points, be it light or power socket. E.g. one light point is between RM 90 - RM140 (recent quotation I received). For 13A socket, RM 120 per point. 15A socket (for owen, washing machine, fridge), it is about RM 230 per point.

Have you checked the condition of the wiring?

I recently rebuild a new house. The wireman proposed 1.5m2 wire for the light. Out of curiosity, I checked my existing condo (which is 30 years old). The wire is much biger diameter. So, I think old propoerties used better quality materials. Of course, that also depends who was the developer.