The Free (or Nearly Free) Home Security Upgrades That Take Under an Hour

A lot of home security starts with free habits, like locking up, moving spare keys, and keeping the garage closed. This is the next layer: small physical fixes that make common entry points stronger.

These easy home security upgrades do not require a contractor, a full weekend, or a major budget. Most take under an hour, and several cost less than lunch. They work as layers, not guarantees.

The easiest home security improvements are the ones that add resistance where someone would most likely try to get in.

Start with longer strike plate screws, a door security bar, window pin locks, a sliding door bar, and motion lighting near dark entrances. If you want an under an hour home security fix, do not start with the biggest project. Start with the small part that would fail first: a loose latch, a short screw, a weak window lock, or a dark doorway.

These quick home security improvements are simple, but they make common entry points harder to use.

Start with the strike plate. Cost: under $5. Time: about 10 minutes. The strike plate is the metal plate on the frame where the latch or deadbolt enters. Many are installed with short screws that bite into thin trim or jamb material instead of the wall stud.

The St. Petersburg Police Department recommends a heavy-duty strike plate secured with 3-inch wood screws that reach into the door frame stud.

Remove one screw at a time, replace it with a longer wood screw, and make sure the door still closes smoothly.

Add a door security bar. Cost: usually $20 to $30. Time: about 5 minutes. A door security bar braces an inward-opening door from the inside, which can help at night or in apartments where you do not want to drill. It only works when someone is inside to set it in place.

Check exposed hinges. Cost: usually under $15. Time: about 20 minutes. Most exterior doors have hinges on the inside.

If yours has hinges exposed outside, hinge bolts, sometimes called security studs, can help keep the door seated even if someone removes the hinge pins. This is not the first fix every home needs, but it is worth checking.

Reinforce the frame if it already feels weak. Cost: about $30 to $60. Time: around 45 minutes. A door frame reinforcement kit adds metal plates around the strike area, hinges, or jamb so force spreads across more of the frame. It is one of the more hands-on home security DIY improvements here, but still realistic for a careful DIYer with a drill.

You can make your door more secure without replacing it by starting with longer strike plate screws, then adding a door bar, hinge bolts, or frame reinforcement based on what your door actually needs. That is why door hardware is one of the best cheap home security upgrades to do first.

Cost: $5 to $15. Time: 10 to 20 minutes.

Seattle Police Department guidance recommends pins or extra locks for double-hung windows to discourage prying. Window pin locks usually place a pin through the sash so the window cannot open more than a few inches. Clip-on or screw-on sash locks can help older windows with worn latches.

Keep fire safety in mind. Do not block the only easy exit from a bedroom or make a window so hard to open that someone could not use it in an emergency.

Cost: Free to $20. Time: about 5 minutes.

A sliding glass door often relies on a latch, not a strong lock. A dowel, broom handle, or dedicated security bar in the inside track can help stop the door from sliding open.

Baltimore Police Department recommends using a blocking device on sliding windows and doors, and notes that a broomstick or dowel in the track can be enough. Measure the track with the door closed, cut the bar so it fits snugly, and test that it stays in place. It is one of the most inexpensive home security fixes you can make in a few minutes.

Cost: $15 to $30 for many plug-in or battery options. Time: about 20 to 40 minutes.

Motion lighting works best when it is aimed at entry points, not blasting the whole yard. Think side doors, back doors, basement steps, detached garage doors, and dark paths near windows.

The Seattle Police Department recommends lighting entrances at night and focusing motion sensor lighting on entry points and vulnerable areas. If wiring is involved, skip the DIY route unless you know what you are doing.

If you later add connected cameras, locks, or sensors, SafeWise's smart home safety guidance is a useful next step. But first, light the dark approach points.

Cost: usually under $15. Time: about 20 minutes.

A wide-angle peephole helps you see more of the porch before you open the door. It is most useful on doors where you cannot clearly see the walkway, porch, or someone standing slightly off to the side.

Seattle Police recommend a 180-degree viewer for the main entrance door.

Cost: about $25 to $50. Time: 30 to 45 minutes if the door is already prepped.

A knob lock by itself is not enough for an exterior door. The Baltimore Police Department recommends deadbolts on exterior doors and says key-in-the-knob locks are insufficient on their own.

The cheapest way to improve home security is still the long-screw strike plate upgrade. But if your main door has no deadbolt at all, this should move near the top of your list.

If you later want monitoring, sensors, or cameras too, treat these hardware fixes as the base layer before comparing home security systems.

A stronger door screw, a better window lock, or a brighter side door will not guarantee anything. It can, however, make the easiest path into your home less convenient.

Start with the weak spot you already know about, then move outward from there. A hardware store run and a careful hour can close more gaps than you might expect.