If there are no lights on in the house, then the light will naturally have to come from outside the house through windows or doorways or whatever. What you want that light to be is up to you. It could be moonlight (usually gelled 1/2 blue), sodium vapor street lights (gelled orange), neon street signs (all sorts of different colors), or whatever you want.
If you want it to feel dark, then you can't be afraid of the dark, meaning backlighting, silhouettes...ect.