NZ Building Code and Entry Door Hardware: What You Need to Know

The NZ Building Code says less about entrance door hardware than most builders assume. The actual mandatory requirements are narrow; a lot of what gets specified is convention or insurance-driven, not code-driven. Here's what's actually required.

Clause D1: Access routes

D1 covers safe and usable access to buildings. For an entrance door it requires:

• An accessible route in commercial and public buildings — residential is largely exempt unless your code of compliance asks for it.
• Door hardware operable with a closed fist where the accessible route applies. No fiddly knobs that need finger pinching. Lever handles and pull handles both comply.
• Minimum 760 mm clear door width.

Clause F4: Safety from falling

F4 mainly affects glazed doors. If your entry door has glass within 800 mm of the floor, the glass needs to be safety glass (toughened or laminated) regardless of what hardware you fit. This is the most commonly missed item on consent inspections.

Clause C: Fire

For most residential entrance doors, fire requirements don't apply. They do apply to:

• Multi-unit dwellings (apartments) — entry doors into common corridors usually need to be FD30 (30-minute fire-rated).
• Doors between an attached garage and the living area — also FD30 in most cases.

Fire-rated doors need specific intumescent hardware. Don't fit a non-rated smart lock to an FD30 door without checking — it will void the rating.

NZS 4220 — the security standard

NZS 4220 is a New Zealand Standard for security of locks. It's not part of the Building Code, but most home insurance policies reference it. All of our locks meet or exceed NZS 4220 Grade 4 (residential).

Egress

The single most important rule for any entrance door: it must be openable from the inside without a key in an emergency. This rules out double-cylinder deadbolts on entry doors in many situations. Smart locks comply because they release the latch from inside via thumbturn, lever, or button.

Accessible thresholds

If you're targeting a Lifemark or Universal Design rating, the threshold height between floor inside and floor outside should be 20 mm or less. This isn't a code requirement on standard residential builds but is increasingly common in council-funded social housing.

What this means for handle selection

For most NZ residential entrance doors, the Building Code doesn't dictate which handle you pick. It dictates that whatever you pick must be operable, must allow internal egress without a key, and must work with the glass and fire ratings of your door assembly. Within that envelope, pick the handle that looks right and lasts.