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sparkyspike
It is possible to rewire a lighting circuit by only lifting floorboards. In a 1960s installation, it is possible that the lightswitch drops are all in conduit, making it easy to pull new cables through on the old. So no chasing and no drilling.
However you are then limited to having switches and lights in the same position. This is more limiting with regards to socket outlets, which in old houses are usually in the wrong place.
However you are then limited to having switches and lights in the same position. This is more limiting with regards to socket outlets, which in old houses are usually in the wrong place.