Yes, in most situations a New Zealand homeowner can install a door barricade bar on their front door as a DIY project — no building consent is required for this type of security hardware in the vast majority of cases. That said, there are a few important things to check before you grab the drill, including your door type, floor material, and whether you're a tenant or owner-occupier.
What Is a Door Barricade Bar?
A door barricade bar (sometimes called a door security bar or floor brace) is a steel or aluminium bar that wedges between the door handle and the floor — or mounts to the floor with brackets — to physically prevent a door from being forced open. They're a popular secondary security measure alongside deadbolts, particularly for doors that open inward.
They are different from door chains or deadbolts in that they don't require any lock mechanism — they work purely through mechanical resistance. Most models are adjustable in length and suit a range of door heights.
Do You Need a Building Consent?
Installing a door barricade bar is generally considered routine maintenance or minor repair and falls under Schedule 1 of the Building Act 2004, which lists work exempt from building consent. Fitting security hardware to an existing door does not alter the structure of your home.
However, always confirm with your local council before starting, as interpretations can vary. You can find guidance on consent exemptions at MBIE Building Performance.
If you're a tenant, you'll need written permission from your landlord before making any modifications, even minor ones. Check your rights and obligations at Tenancy Services.
Choosing the Right Barricade Bar
Not all barricade bars suit every door. Consider the following:
- Door swing direction: Barricade bars only work on inward-opening doors. Most NZ front doors open inward, but check yours first.
- Floor type: Hardwood, concrete, and tile floors all require different fixing methods. Some bars use a rubber foot and need no fixing at all; others require floor-mounted brackets screwed into the substrate.
- Door handle height: Most bars are adjustable, but measure from your handle to the floor before purchasing.
- Bar material: Steel bars offer the most resistance; aluminium bars are lighter but still effective for most residential applications.
Tools and Materials You'll Need
- Tape measure
- Power drill with appropriate drill bits (timber, masonry, or tile bits depending on your floor)
- Screwdriver
- Spirit level
- Pencil for marking
- Appropriate fixings (usually supplied, but check they suit your floor type)
- Safety glasses
Step-by-Step Installation Guide
1. Measure and adjust the bar
Measure the distance from your door handle to the floor. Adjust the bar to the correct length according to the manufacturer's instructions — most bars telescope and lock with a pin or bolt.
2. Position the floor bracket (if required)
With the bar resting against the door handle, mark the position of the floor bracket. Use a spirit level to ensure the bar sits at the correct angle — typically around 45 degrees for maximum resistance.
3. Drill and fix the bracket
Drill pilot holes at your marked positions. For timber floors, use the supplied timber screws. For concrete or tile floors, use masonry anchors. Take care when drilling into tiles to avoid cracking — use a tile-specific drill bit at low speed.
4. Attach and test the bar
Fit the bar into the bracket and test it by applying firm pressure to the door from the inside. The bar should hold firmly without slipping. Adjust the length if needed.
5. Check for trip hazards
A barricade bar left across a doorway is a trip hazard. Most bars are designed to be removed when not in use — make sure everyone in the household knows how to disengage it quickly in an emergency.
Important Safety Considerations
- Emergency egress: A barricade bar must never compromise your ability to exit quickly in a fire or emergency. Ensure all household members — including children and elderly residents — can remove the bar easily and quickly.
- Healthy Homes compliance: If you're a landlord, any security additions must not impede the safe exit of tenants. See Tenancy Services for Healthy Homes obligations.
- WorkSafe guidance: For general home safety awareness, WorkSafe NZ has useful resources.
When to Call a Professional
While fitting a barricade bar is well within most DIYers' abilities, consider calling a licensed locksmith if:
- Your door frame or floor is damaged, rotten, or uneven — fixings may not hold securely without remedial work first.
- You want a more comprehensive security assessment of your home's entry points.
- You're unsure about drilling into your floor type (particularly if you have underfloor heating or a suspended timber floor with services beneath).
- You'd like the bar integrated with other security hardware such as a multi-point locking system.
A qualified locksmith can also advise on whether a barricade bar is the best solution for your specific door and situation, or whether a high-security deadbolt or door reinforcement kit might serve you better. You can find a trusted local locksmith on tradedirectory.co.nz.
