Shelter · Home Security
The layer no hardware replaces.
A $300 deadbolt on a door left unlocked one time in five provides four-fifths coverage. A $20 deadbolt locked every single time provides all of it. Habits are the cheapest layer in the whole framework, and the one most households underweight.
The behavioral layer
Hardware is a ceiling. Habits decide how close you get to it.
FBI Uniform Crime Reports data shows roughly 4 in 10 residential burglaries involve no forced entry at all. The offender walked in through a door or window that was simply left unlocked.1 No lock upgrade, no camera, and no alarm system addresses that pattern, because the barrier was never engaged in the first place.
This page covers the five daily habits that close that gap: the locking routine, spare key rules, garage discipline, visitor and delivery protocols, and what to keep quiet about a household's resources and schedule. Each one costs nothing and takes less time to do than to explain.
Five habits
Build each one until it's automatic.
The locking routine
Run the same check, in the same order, every time you leave the house or go to bed. Consistency is what turns a lock into actual protection instead of a hardware upgrade that sometimes gets used.
Spare keys and access control
A hidden key defeats its own purpose if it's hidden somewhere obvious, and under the mat, in a flowerpot, and above the door frame are the first three places anyone would check.
Garage discipline
The garage is the most commonly forgotten entry point in the routine above, and it's frequently the door people are least careful about because it doesn't feel like the front of the house.
Visitor and delivery protocols
Most people who come to the door are exactly who they say they are. The habit here is a small, consistent verification step, not suspicion of every visitor.
What to keep quiet
The same research behind every layer on this site points the same direction here: visible signs of resources, activity, and absence shape whether a property draws attention.2 A quiet, unremarkable household is a less noticeable one. None of this is about hiding a normal life. It's about not doing the noticing for anyone.
1 Federal Bureau of Investigation. Uniform Crime Reports, "Crime in the United States," Property Crime, Method of Entry tables (multiple years). 2 Cozens, Paul, Greg Saville, and David Hillier. "Crime Prevention Through Environmental Design (CPTED): A Review and Modern Bibliography." Property Management, vol. 23, no. 5, 2005. 3 Consumer Product Safety Commission. "Portable Generator Hazards" safety alert; CDC guidance on generator placement. See the full protocol at Generator and Backup Power Safety.
A calibration note
This is ordinary discretion, not secrecy.
Every habit on this page has a plain-language version: lock the door, don't hide a key somewhere obvious, close the garage, verify who's at the door, don't post your travel itinerary to strangers. None of it requires treating neighbors, guests, or the wider world with suspicion.
The same logic that says don't announce you'll be gone next week also says the four neighbors nearest to you are worth knowing by name and telling directly when you travel. Quiet about a public feed and open with the people who'd actually notice something wrong are the same habit, not opposites.
See also: Home Security Without Paranoia covers the research and reasoning behind this framing in full.
Getting started
One habit this week.
Write your locking sequence down. Same order, every time. Tape it inside a cabinet door for the first few weeks.
Check where every spare key actually is right now. Move anything hidden outside to a person instead.
Look at your own social media from a stranger's view. Remove or hold any post naming a future travel date.
Related guides
Home Security Without Paranoia
The research and reasoning behind an evidence-based approach.
The Layers of Home Security
The complete seven-layer framework, of which habits are Layer 7.
Generator and Backup Power Safety
The full carbon monoxide protocol and placement rules.
A Reasonable Privacy Baseline
The digital-world version of this same discretion habit.
"We are what we repeatedly do."
Will Durant, paraphrasing Aristotle
Go deeper
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