An old pattern returns

Something very strange happened this morning , a light switched its self on in a building I was in on the farm . When I checked the light switch it had been pushed down . This happened when I was about 4 metres away . Something had the material force to move that switch . This also happened last summer when I was even closer to another light switch . Again this was a large insulated plastic switch which could not move by itself . Both times this has happened building work was going on or been done recently . In fact other times door handles have rattled themselves in the past in the farm house . The common denominator ( one of my favourite words ) is always structural building changes . For some reason this triggers actual physical events , not sounds but things actually moving . Maybe something is annoyed ? This has gone on for years and if the manor next door sell I dont know what will happen . It will be eventful if the growing noises the water pipes have made this summer is anything to go off...