We live in condo on the first floor of a 3 floor building. At night we hear knoching/tapping noise in our ceiling right above our bedrooms.The noise lasts a couple of seconds, but comes back every few minutes. Our neighbors above us hear it on their floor, but not as loud as we are. The people on top of us or we do not use water/air conditioner or heater at night. What makes this noise? We are frustrated. Do we need to call a plumber, electrician or who? Our association just said that there are no pipes on our ceiling and said that we need to talk to our neighbors. Please help if you know anything about it.Thanks.

You might want to talk to the association there and ask about an exterminator. Have them out for a look.

Thanks but it's not an animal noise, more like mechanical noise;shaking and tapping.

You may need an exterminater for little varmets