For single floor homes with a basement the basement may be the best path.
Cat5 attic to basement.
Cat 5 6 ethernet cables this type of security camera wires transmits the video image data and power via a single cable.
Lets find out if you re lucky.
My cable tv is distributed through the attic so it seemed like a good solution to run my home network through there as well.
These methods will work for any cable.
Security camera wire types usually include 3 main kinds.
Install coaxial cable cable tv or satellite tv cables concealed in wall spaces from non living spaces above or below.
You should have a plumbing vent stack that goes from the basement all the way up through the roof take a look in the basement see if the hole in the first floor.