Baby-proofing by milestone: when to do what

Baby-proofing the whole house before your baby arrives is mostly premature. Newborns stay where you put them. The hazards that injure and kill children appear in sequence, unlocked by each new stage of mobility. Match your preparation to the developmental milestone, and you'll act on time without wasting effort on hazards that are months away.

Always-on, from day one

Before any milestone-specific work, two things need to be in place from the day you bring your baby home:

Working smoke alarms on every level of the home, tested monthly. A carbon monoxide detector near any gas appliance, boiler, or attached garage.¹

These are relevant at every age. Check them now if you haven't.

Rolling (around 3–5 months)

Rolling often arrives without warning. A baby who could not roll yesterday can roll off a changing table today. The typical age range is 3–5 months, but some babies roll earlier.

Never leave a baby unattended on any elevated surface — changing table, bed, sofa, or any raised surface — once rolling is developmentally plausible. Put your hand on them at all times, or do nappy changes on a mat on the floor. The floor is always the safest surface.

Sleep environment: confirm the cot is completely bare (no loose items, bumpers, or soft objects) before rolling begins. A rolling baby in a cluttered sleep space is an active hazard. See setting up the nursery for details on the safe sleep environment.

Sitting (around 6–8 months)

A baby who can sit can also topple, and the direction of the fall is unpredictable.

High chair safety: fit and use the full five-point harness every time, even for brief meal attempts. A topple forward onto the tray or floor can cause a serious head injury.

Tip-over inventory: standing-height lamps, fragile items on low shelves, and anything that could be pulled over by a baby grabbing for support. Move or secure before this stage.

Crawling (around 8–10 months)

A crawling baby covers ground quickly and has no concept of danger. This is the stage where the majority of targeted baby-proofing becomes urgent.

Stair gates

Fit gates at both the top and bottom of every staircase. The top gate must be wall-mounted — pressure-mounted gates are not considered safe at the top of stairs and should only be used at the bottom.¹ Install before your baby begins crawling; by the time they reach the stairs, it is too late to be fitting gates.

Cabinet and drawer locks

Prioritise: cleaning products and medicines (move to high locked storage if possible), sharp utensils, heavy items that could fall, and anything toxic. Child-resistant packaging is not childproof — assume a crawling child can open containers given enough time.

Small object audit

Anything that fits through a toilet roll tube is a choking hazard. This includes coins, batteries, small fridge magnets, watch straps, pen caps, and small parts of toys belonging to older siblings.

Electrical outlets

Cover unused electrical outlets. The greater risk at this stage is a baby inserting an object, so outlet covers that require adult hand size to remove are more effective than simple plug-in caps, which small children can sometimes pull out.

Pulling to stand (around 9–12 months)

A baby learning to pull themselves up grabs anything within reach and applies significant lateral and downward force. This changes the risk profile of all nearby furniture.

Anchor tall furniture

Dressers, bookshelves, wardrobes, freestanding TV units, and chest freezers must be secured to the wall.² Furniture tip-over injuries send thousands of children to emergency departments each year — and the deaths they cause are preventable entirely by wall-anchoring.

Most flat-pack furniture is sold with anchoring straps or L-brackets. Many families never fit them. Fit them before your baby begins pulling to stand. This applies to furniture in every room your baby accesses — not just the nursery.

Blind and curtain cords

Looped blind and curtain cords are a strangulation hazard. A child can become entangled in seconds and cannot free themselves.¹ Options:

• Tie cords up high, out of reach, permanently
• Cut looped cords into two separate cords
• Replace with cordless or remote-controlled blinds

This is one of the leading causes of accidental strangulation in children under 5. It is entirely preventable.

Water hazards

Drowning occurs in less than 2cm of water and can happen in under two minutes, silently.³ A baby or toddler who can pull to stand can reach into a toilet, tip over a bucket of water, or fall face-forward into a low container.

• Fit a toilet lid lock
• Never leave buckets, bowls, or containers of water at floor level
• Empty paddling pools immediately after use

Bath supervision: never leave a baby or toddler unattended in the bath for any reason — not to answer the door, not to take a call, not for a moment.³ If you need to leave, take them with you in a towel. Drowning is silent; a child in distress in water typically cannot call out.

Walking (12–18 months onward)

A walking toddler reaches higher, moves faster, and pushes through doors.

Kitchen hazards: pan handles always face inward over the hob; stove knob covers prevent accidental gas or heat activation; keep hot drinks well out of reach. Scalds from pulled-down mugs of tea are one of the most common burn injuries in this age group.

Door finger guards: door pinch guards prevent fingers being caught in the hinge or closing edge of doors.

Drawers: extend your cabinet-lock audit upward — a walking child reaches kitchen drawers and can access knives.

Ongoing supervision: what no product replaces

Baby-proofing reduces risk. It does not replace supervision.

Medications should be locked away at all ages — paracetamol, iron tablets, and antihistamines are among the most common causes of childhood poisoning. Child-resistant caps are not child-proof.

Garden ponds, pools, and any open water require four-sided fencing with a self-closing gate as the baseline.³ Fencing around pools is the single most effective drowning prevention measure.

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Also in this cluster: Setting up the nursery · Car seat basics and rear-facing

Sources

1. NHS. "Keeping Your Baby Safe." NHS, 2024. https://www.nhs.uk/conditions/baby/caring-for-a-newborn/keeping-your-baby-safe/
2. American Academy of Pediatrics. "Home Safety: Here's How to Keep Your Child Safe." HealthyChildren.org, 2024. https://www.healthychildren.org/English/safety-prevention/at-home/Pages/Home-Safety-Heres-How-to-Keep-Your-Child-Safe.aspx
3. Centers for Disease Control and Prevention. "Drowning Prevention." CDC, 2024. https://www.cdc.gov/drowning/prevention/index.html