Ben,
Thankfully, there are a few things you can do if you are considering working in a room that is located in the proximity an elevator shaft. First you must determine the source of the actual the noise. Yes, it’s coming from the elevator - but why?
Is the nhoise coming from the cable system or motor attached to the elevator itself or are you next to the operator room? Answering this question will help you to determine if you are trying to treat operating noise (or flanking noise) or against the sound made by the impact of the elevator reaching the top floor.
If the noise is coming from the elevator shaft itself, from the movement of the cables and motor, you should be able to solve your problem by installing a layer of mass loaded vinyl over the offending wall.
The project may become a bit more complex if you find that the noise is caused by the impact of the elevator itself or the switch used to control the elevator. In this case you might need a composite material like our acousti curtain. Call or email me I'll come take a look.
Pretty soon you’ll be able to enjoy a good night’s sleep without wondering which neighbor just got home!