The safest grow house is one that in every way shape or form looks like every other house in the neighborhood. Neighbors get suspicious quick, especially in older neighborhoods where everyone knows everyone else.
If you want to avoid that then rent in a new area. But really there is no better security than living in the place you are growing in.
Do not rent from a real estate agency. They will do regular inspections which will mean u will have to pack everything down every so many months.
If you rent privately see if the landlord will take cash, if so pay him or her a couple of months in advance. The less you see of them the better, and with cash there is no paper trail back to you.
Other security tips, take them or leave them:
When you move in, move furnature in and make sure the neighbors see it.
Hang tools on the wall in your garage. Run light timers in your house to simulate life. Put a small tv by the window with the curtains pulled and have that on a timer too.
Mow the lawn regularly, on a saturday morning. Have an alibi ready to explain your odd working hours.
Wash your car in the driveway like everyone else in your neighborhood, also on a saturday morning.
Remember someone will be coming around periodically to read the power meter. If youre running 5000 watts an hour they will see the little power disk, digital readout spinning at a million cycles a second raising suspicion.
Learn when the meter reader is coming and cut back your lights on that day. Even better run your lights overnight, so that the day cycle is using the least amount of power.
Never put grow trash out with your garbage. Buy a mulcher and put it in your basement. Mulch up your stripped plant matter. Grind up any dried leaves in a coffee grinder and stealthily walk across the road and down a bit and drop the grinds into the grass verge. If the police dogs turn up for some random reason, they will be so consumed with the odor down the other side of the road they wont show any interest in your side.
Other than that, install a stealth security system with DV recorder, that looks down the road. No use looking across the road, undercovers only sit there in Hollywood movies.
Look for movement down your street within 30 minutes of you leaving. That means cars slowly cruising past in that time period, or cars that shift away several minutes after you leave.
You can have the fastest car in the world and you will can still get followed. You cannot outrun a police helicopter watching you from 5 miles away directing a crew of tail cops where you just turned into.
Lastly, leave your flash car at your other house, buy a normal boring plain as fuck car with nothing on it that is going to make anyone ever give a fuck about it or who is driving it, and use that one as the car that you drive in to and from your grow house.