Theresa
Hope you got the photos of the high street houses.
Ivy Villas, as pharmakon says is a modern development. As best as I can find out from "locals" these houses were built in the 1970's.
They used to be in Station road but the improvement to the station and new roads cut station road in half. The old houses that were Ivy Villas were all pulled down and eventually replaced with these current houses. The road name was changed to Ivy Villas.
Just thought, it might be worth trying to contact the Dartford museum. They might have something on the Everard family.
Adrian