Draw a polygon around points to select points in another shp that have similar value

Guys,

I have two point shapefiles:
1. Railway stations
2. Household locations
I know which station each household has chosen. I have this as an attribute in the household table.

I want to draw a polygon around each railway station that encloses all households that have chosen this location.

I tried "Minimum Boundary Geometry" and it did work but I want the polygon to be drawn similar to the a buffer around the station points.


Any ideas?

Thanks!
Mohamed