PSS is pretty much spot on. $30-$40 per wire is the going rate unless the house is very large and spread out. Our price goes up a bit in that case. That's only for the pre-wire. Does not include contacts, switches, or PIRs.

Ernie, I believe that we have liability risks even with the AV stuff. A receiver can overheat, catch fire. A flat panel can fall off the wall, etc. We now live in a very litigious world.

As for the security risks, it helps to have comprehensive and thorough contracts prepared by expert attorneys such as Kirschenbaum & Kirschenbaum PC. That law office specializes on the security industry. Thanks for that great tip Julie!