You can set your watch on Sunday to the start of construction work at 525 Union Avenue in Williamsburg. It as reliable as the church bells ringing at Our Lady of Mount Carmel church next door. We will give the construction workers credit for being more quiet than usual this weekend, but they were out there again. Needless to say, 525 Union does not have a permit for after-hours work. Also, needless to say, the Department of Buildings had shown absolutely no interest in stopping Sunday work at the building. At least one local resident has told us multiple times that calls to DOB officials about the problem have been ignored and messages have not been returned. Hint to DOB inspectors: Go to 525 Union Avenue on any Sunday morning. Go after 1030AM. It is like shooting fish in a barrel. On the other hand, we don’t know why the Department would show interest in this particular building as it seems to have utterly no interest in the problem of illegal Sunday construction work anywhere in Williamsburg or Greenpoint. The problem is widespread. For instance, like the work going on at the Roebling Oil Building, a couple of blocks away.