I just bought the land near Falkreach, and Lydia and I went out to go survey it. Looks pretty good, until I come to that small drop off, and there's a necromancer over there. So I shot him with the cross bow, so satisfying to watch him fly back over his little altar. I took the body down to the river, waded out, let the body go, where the current picked him up and I watched his body go sailing on its way.

Will he never spawn there again? Hopefully?

edit oops move this please?

He will respawn if you don't visit the house within 10 days.