Neptune is a very slow-moving planet. It is considered generational. That is to say people of the same age will generally have Neptune in the same sign. Therefore its house placement and its relationship to personal planets are what personalize its impact. My own Neptune is in Scorpio which places me within a certain age range; all you have to do to figure that out is consult an ephemeris. My Neptune falls into my 4th house, moon-ruled and concerned with matters of home, hearth, housing and parental issues.
Neptune has a foggy effect. It rules magic and illusion, confusion and the divine. With Neptune in my 4th house my concept and the reality of my home is not static; it is changeable, illusory. At the age of 38 I counted up all of my moves and figured I had changed homes 38 times. Granted, some were back and forth between the same houses but not most were unique. That’s a lot of moving around. My base was elusive/illusive. I’ve lived in the same house for seven years now, by far the longest I’ve lived anywhere. However, much about my living situation has changed over that time and I know better than to consider it permanent.
I’ve lived in fine homes with pillars and servants quarters and I have also been homeless. I’ve stayed in suites at the Four Seasons and sat awake in fear in 2-bit rooms when someone rattled the flimsy, hollow-core door secured only by simple hinges, a doorknob and a dime-store slidebolt. Neptune spiritually elevates over time, promotes the acceptance of the divine instability in life. Stability for me has nominally asserted itself since I realized there is none. Neptune assists one in the shedding of duality.
Where is Neptune in your chart? Do you see its influence?