In a previous episode, the Drysdale estate sits left of the Clampett estate (as you face their front doors), yet Granny and Elly head right to visit the Drysdales.
Jed makes the same hand motions to raise Granny by rope as he did to lower her.
At 16:28 when Elly and Granny walk towards the door, the shadow of the boom mic can be seen in the upper right corner just above the window.