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Charlotte Dalton, Security and standards specialist··11 min read·
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What Burglars Look for Front Door | Read Yours Now

Walk your own front path and see what a burglar sees. Cylinder depth, gate latches, porch lighting, door flex. Specific checks, no filler.

Most burglars don't knock. They walk past, they look, and they've made a decision before they reach your gate. The whole assessment takes about four seconds. What they're reading isn't your alarm box or your neighbourhood watch sticker. It's your door, your cylinder, your porch, and the half-dozen physical clues that tell them whether this one is worth stopping for.

This is a field guide. Walk your own front path while you read it.

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The Cylinder: The First Thing They Clock

Stand at the pavement and look at your front door. If you've got a euro cylinder lock (the oval barrel that operates your uPVC or composite door), two things are immediately visible: how far it protrudes from the faceplate, and what brand it is.

Protruding cylinders are snap targets. The attack is simple: a pair of pliers or a screwdriver levered against the cylinder breaks it at the shear line, the cam drops, and the door opens. Takes under a minute. Any cylinder that sticks out more than 3 mm beyond the door furniture is giving that leverage away for free. The fix is a cylinder the right length for your door, fitted flush or just shy of flush, with an anti-snap guard covering the break point.

Brand recognition matters more than people think. A generic brass cylinder with no markings is a green light. An Avocet ABS, an Ultion, a Mul-T-Lock MT5+, or a Yale Platinum reads differently. Not because burglars carry a catalogue, but because they've tried enough cylinders to know which ones take time and which ones don't. If yours is one of the unbranded ones that came with the door nine years ago, it almost certainly has no anti-snap feature, no anti-pick pins, and no anti-drill hardening.

What to actually check

  • Grip your cylinder and try to rotate it with your fingers (door locked, no key). If it moves more than a millimetre or two, the set screw is loose. A loose cylinder is an easy-pull cylinder.
  • Measure how much of the cylinder sits proud of the door furniture. Over 3 mm: replace or fit a protector.
  • Look for a rating mark. TS007 3-star is the current standard for cylinder and furniture combined. SS312 Diamond is the police-preferred spec. No mark visible means no test was passed.

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The Door Itself: Flex, Frame, and the Letterbox Rule

A good cylinder in a bad door is money wasted. Composite and solid timber doors are generally fine. Older uPVC doors, particularly anything installed before 2010, can flex enough at the top corner that a burglar can force the hook bolts out of the keep with a short, sharp shoulder. You can test this yourself: with the door locked, push firmly at the top corner. If you can see or feel it move, that's the attack point.

The frame matters as much as the door. Screws that hold the keep (the metal plate the bolt or hooks engage with) are often only 25 mm long, screwing into plastic rather than masonry. Longer screws, 70 mm or more, going into the actual frame substrate make a real difference. This is an unglamorous fix that costs almost nothing and almost nobody does.

Letterboxes are a separate problem. A standard letterbox opening is large enough for a burglar to pass a tool through and either fish for keys hanging inside, or in the worst cases manipulate a thumb-turn on a deadlock. You can buy a letterbox cage for about £15 to £25 that attaches inside and blocks any reach-through. If your keys hang on a hook in the hall, move them.

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Lighting and the Porch: You're Creating a Stage, Not a Shadow

A dark porch is the burglar's friend. They can stand there, work on the lock, and nobody walking past sees anything unusual. A lit porch inverts that entirely. Good lighting means any attempt at the door is visible from the street, from a neighbour's window, from a camera. Most people understand this in principle and then fit a 40-watt bulb that throws a weak pool of yellow light and goes out at 11 pm on a timer.

Sensor lighting is better than timer lighting. A porch light that trips at any movement is harder to work around than one with predictable hours. Position matters too. A light mounted directly above the door throws a lot of light onto the step and not much outward. A wall-mounted sensor light slightly to the side and angled forward will illuminate someone standing at the door from the street's point of view.

The porch architecture itself is worth a look. Deep porches, particularly those common in Victorian and Edwardian terraces around the Cliffe and Southover, can create a recess that's functionally invisible from the street even with lighting. If your porch is deeper than about a metre, one overhead light isn't enough.

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The Gate, the Bins, and the Route Around Back

Front door attacks happen. Rear door attacks happen more often, and the front door is frequently how they get to the back. Look at your side gate: can someone reach over it and lift the latch? A latch that opens from the outside by simple reach-over is no gate at all. Fit a bolt on the inside, or replace the hardware with a thumb-turn latch that requires a key from outside.

Bins left at the side of the house are steps. Recycling boxes stacked near a side gate or fence give enough height to clear a 6-foot fence without any real effort. This sounds almost absurd until you've seen the footage from a door camera in Malling or Landport showing exactly that. Move the bins after collection, or at minimum don't leave them against a boundary wall.

The garden furniture on the front lawn, the decorative stone planter, the heavy ceramic pot: they're all potential missiles for a side window or weapons of convenience at the door. Not saying move everything, but low-effort projectiles left at the front of the house are worth a thought.

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Signage, Social Media, and the Empty House Signal

Physical signals first. A pile of post behind the letterbox panel is visible from outside if the letterbox is at waist height and you can see the light change when you look through. Uncollected parcels on the step. A recycling bin left out two days after collection day. Drawn curtains at 3 pm. None of these are definitive, but they're all data points in an assessment that takes four seconds.

The "we're away" social media post is almost a cliché now, but the behaviour persists. The real issue isn't always a public post: it's a friends-list that's larger than it should be, or a tagged location post from the airport that a mutual connection can see. If you're away from a Ringmer or Kingston property for two weeks, it doesn't take a sophisticated criminal to triangulate an empty house from a feed.

A time-switched light or two (not the same light, not the same hours every night) is cheap and effective. Radio on a timer in the kitchen costs nothing.

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The Specsaving Inventory: What Your Lock Hardware Actually Is

This is where most people draw a blank. They know they have a lock. They don't know what kind.

Here's a quick identification guide:

What you seeWhat it probably isRisk level
Oval barrel on uPVC/composite, no visible markUnrated euro cylinderHigh
Oval barrel, flush-fit, marked ABS/Ultion/MT5Anti-snap cylinderLower
Mortice lock (keyhole in door body), key both sidesBS3621 mortice deadlock if 5-leverLow if fitted correctly
Mortice lock, only 2 or 3 leversSub-BS3621, insurer may not acceptHigh
Night latch only (Yale-type, one-sided)Latch only, no deadbolt functionHigh on its own
Digital keypad, no physical deadbolt backupDepends entirely on motor bolt qualityVariable

BS3621 is the standard for mortice deadlocks: it specifies at least 1,000 key differs, bolt throw of at least 13 mm, and attack resistance tested to a defined cycle. BS8621 is the same for key-egress locks (where you need a key to get out, relevant if there's a fire risk to consider). If you're on a uPVC door with multi-point locking, PAS24 is the standard the door itself should meet for attack resistance.

If you're a landlord with properties in Newhaven or Seaford, check your tenancy agreements and your insurance schedule. Many policies require BS3621 as a minimum. Fitting a digital lock or an unrated cylinder without checking that first is a claim waiting to be refused.

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The 60-Second Walk-Past Check

Do this now, from the pavement:

  • Cylinder: Does it protrude? Can you see a brand or rating mark? If no to both, it needs attention.
  • Door furniture: Is there an anti-snap guard around the cylinder? Escutcheons (the surround) should be hardened, not cosmetic.
  • Letterbox: Is it in the door (not the frame)? Is it positioned at lock height? Both increase the fish-for-keys risk.
  • Porch light: Is there one? Does it reach the gate? Sensor or timer?
  • Side access: Gate visible from the front? Latch reachable from outside? What's next to the gate?
  • Glazing near the lock: Any glass panel within arm's reach of the inside handle or thumb-turn? Toughened, laminated, or neither?
  • Door flex: Push the top corner hard with the door locked. Any visible movement?
  • Post/parcels: Anything visible that signals unoccupied?

Eight checks. You can do them in under a minute. Most people have never done any of them.

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A Few Numbers Worth Keeping in Mind

Anti-snap cylinders from a decent brand (Avocet ABS, Ultion, ERA Fortress) cost £30 to £80 supplied and fitted depending on size and hardware needed. A TS007 3-star cylinder and handle set, which is what insurers increasingly want to see, runs £80 to £150 fitted for a standard uPVC door.

A mortice deadlock upgrade on a timber door in Wallands or Nevill, where there are a lot of 1970s and 1980s builds with original hardware, is usually £120 to £180 fitted, depending on whether the door needs prep work for the new case size.

A letterbox cage is a tenner to twenty-five pounds, self-fitted in about fifteen minutes.

A PIR porch light: £25 to £60 for the fitting plus an hour of an electrician's time if hardwired, or a mains-plug equivalent with no wiring at all.

None of these are large numbers. The average burglary costs around £3,000 in losses plus the psychological cost and the insurance premium consequence, which tends to last three to five years on renewal. The maths isn't complicated.

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Checklist

60-Second Front Door Check: Read It Like a Burglar

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If you've done the walk-past check and you're not certain what you're looking at, or you want a second opinion on what your cylinder actually is, Fort Secure covers Lewes and the BN7 and BN8 postcodes and gets to most addresses within about 30 minutes. Call and we'll tell you on the phone what's likely needed and what it'll cost, before you commit to anything.

Charlotte Dalton, Security and standards specialist

Charlotte is the one who reads the test reports, and handles the survey work, the insurance questions and anything where the British Standard actually matters. Will happily explain why the number on the box is not the number that counts.

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Questions people actually ask

Look at the end of the cylinder (the part you can see from outside). Genuine anti-snap cylinders from brands like Avocet ABS, Ultion, or Mul-T-Lock MT5+ have the brand name moulded or stamped into the body. The other tell is a sacrificial break zone: on a properly rated cylinder, you'll see a slight groove or neck at the shear point designed to snap there rather than at the cam. If yours is plain brass with no markings and came with the door, assume it has no anti-snap protection. A TS007 3-star rating means it's been tested to resist snap, pick, drill, and bump.

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