There are a number of Waterman's in Staplehurst 1841 census.
There is only one James as follows.
Reference H07/475/22 folio 32a
James Waterman, age 20, agricultural labourer, born Kent.
Sarah Waterman, age 20, born Kent.
You will be aware that the 1841 census does not give place of birth, just whether in or out of county. Also ages are rounded to the nearest 5.
Most of Staplehurst has no addresses - only the larger buildings do. But from this information, I can tell you that the about James (whether yours or not) lived in The Quarter. St that time there were only a couple of houses there and they are what we now call 17 - 19 The Quarter.
I have transcribe the parish register but only up to 1795, I hope to start the next batch shortly so if I come across your James I will let you know.
Regards
Cathy