We have a similar issue in our 12 apartment building (in inner Melbourne). The house lights were initially on all night. Some apartments have frosted glass windows (including some bedrooms) to the building's stairwell, which is also a light well. This gives those apartments extra light in daylight hours but some residents didn't want the light from the house lights at night. Some (myself included) fitted blackout blinds on these windows. Some residents didn't like the waste of electricity.
We decided to adjust the house lights timer to be on from dusk to 10pm. There are some emergency lights too that are on 24/7 that give a reasonable light level after 10pm.
One concern was the liability issue – if the OC could be sued if someone tripped in the stairwell after 10pm. Does the OC have a legal responsibility to keep the stairwells illuminated? We have about 18 house lights and to put proximity sensors on all of them would be quite expensive – and possibly even more annoying to the residents with the frosted glass windows – because lights would be going on and off at any hour during the night.