Commercial Door Hardware & Egress Compliance Guide

Navigating commercial door hardware specifications in New Zealand requires a strict understanding of fire safety, egress paths, and accessibility regulations. This guide is drawn directly from C/AS2 (Second Edition, effective 28 July 2025), NZS 4520:2010 (Fire-resistant doorsets), NZS 4121:2001 (Design for Access and Mobility), G1/AS1 (Personal Hygiene), the Building Act 2004, and the specified-system compliance schedule documentation published by Territorial Authorities, with clause references given throughout so you can verify them yourself. Standards are periodically revised, so always confirm current clause numbers with your fire engineer, IQP, or Territorial Authority before relying on any figure below for a specific building.

1. The Core Principle: Single-Action Egress

The absolute foundation of New Zealand commercial door compliance is safe escape. Under C/AS2, locking devices on escape routes must be clearly visible, located where a person would expect to find them, and able to be unlocked and unlatched from the exit side without a key. In the event of fire, they must be operable without a key or any other security device, opening in the normal manner. A locking device can never override or block a panic fastening fitted to the same door [C/AS2 §3.9.2.2–3.9.2.3].

The Single-Action Rule

• The Law: Unlocking and unlatching a door from the exit side must happen via a single mechanical action on a single device (e.g., pulling a lever handle or pushing a panic bar).
• Electromechanical Locks: If a locking device is electromechanical, it must either fail-safe (unlock automatically on power loss) or provide an alternative method that still meets the same “no key, clearly operable” test [C/AS2 §3.9.2.4].
• Door Handle Forces: Hardware on escape routes must also meet Acceptable Solution D1/AS1’s accessibility requirements, and be operable within the force an ordinary person can apply: a single hand to release the latch, two hands to set the door in motion, and a single hand to open it to the required width [C/AS2 §3.9.1.6–3.9.1.7].
• The “After-Hours” Principle: This requirement applies whenever the building is occupied. If a cleaner, manager, or stock-taker is inside after hours with a secondary bolt thrown, they are illegally trapped.
• The Violation: Installing a separate deadbolt, thumb-turn, hook-bolt, or pad-bolt in addition to a standard latch lever creates a two-action exit and is an automatic compliance failure.

Note: C/AS2 does not itself state a specific force figure (in Newtons) for escape-route doors — it requires the door to be operable within ordinary human capability and defers to D1/AS1. NZS 4121 separately sets opening-force limits for non-fire doors generally (38N exterior, 22N interior [NZS 4121:2001 §7.3.5(a)-(b)] — see Section 10); don’t assume that figure is what C/AS2 requires for a given escape door without checking which standard actually governs that door.

2. Panic Fastenings: Occupant Thresholds

The current C/AS2 (Second Edition, effective 28 July 2025) does not use a flat occupant-number cut-off across all building types. Panic fastenings are mandatory on escape-route doors — including exitways and final exits — in:

• Retail areas serving more than 500 occupants; and
• Crowd activities (risk group CA — theatres, entertainment venues, churches, and similar) of more than 100 people [C/AS2 §3.9.8.2].

Outside those two categories, standard single-action lever handles (configured for single-action egress) remain fully compliant for office spaces, small retail shops, and single-use rooms.

Panic Fastening Specification

• Must have a horizontal actuating bar or panel spanning at least half the width of the door leaf.
• Mounted 800–1200mm above floor level.
• Must release with a one-handed horizontal push — no gripping or turning required [C/AS2 §3.9.8.3].

3. Delayed-Egress Locking

Retail loss-prevention delay locks come up often in this trade, and they are permitted — but only under tightly defined conditions. A door on an escape route may only use a delay-action unlocking device where all of the following are met:

• The fire cell is protected by a Type 4 or Type 7 fire system;
• A fire alarm instantly overrides the delay;
• The delay does not exceed 15 seconds; and
• Signage complying with F8/AS1 is provided [C/AS2 §3.9.8.1].

If any one of these conditions isn’t met, the delay device is non-compliant, regardless of how it’s marketed.

4. Escape Route Doors: Width & Swing

The layout of doors on an exit route is directly governed by clear opening width and swing direction requirements.

• Minimum clear opening width: 760mm, increasing to 950mm where beds need to pass [C/AS2 §3.9.4.2; NZS 4121:2001 §7.3.1].
• Minimum swing: doors must open no less than 90°.
• Direction of swing: any door serving a room or area with more than 50 occupants must swing in the direction of escape [C/AS2 §3.9.3.1, §3.9.4.5].
• Revolving doors, automatic doors, and access-control systems are never permitted across an escape route inside an exitway. They are allowed on an open path or at a final exit, provided they fail safely open in an emergency [C/AS2 §3.9.6.1].

Note: a final exit door is likely its own Specified System — SS15.2, “Final exits” — separate from any electronic hardware fitted to it. Worth keeping in mind alongside the SS3.x categories covered in Section 5.

5. Access Control, Electronic Locks & Smart Locking Systems

Two separate questions apply to any electronically locked or interfaced door: does the hardware satisfy the escape-route rule, and is it a recognised Specified System requiring inclusion in the building’s compliance schedule? These are independent tests — a door can pass the first and still be subject to the second.

The Escape-Route Test: Fail-Safe vs. Fail-Secure

• Fail-Safe (Power Off = Unlocked): Required for an electromechanical locking device on an escape route, unless an alternative method meets the same “no key, clearly operable” test [C/AS2 §3.9.2.4].
• Fail-Secure (Power Off = Locked): Only acceptable where a mechanical, single-action override on the inside guarantees escape regardless of power state — the fail-secure behaviour must never actually block the single-action exit path.
• In many commercial smart-locking platforms (such as SALTO or Schlage commercial ranges), the electronics sit inside the lock furniture or cylinder rather than in a separate maglock or wired strike, and the mechanical connection between the interior lever and the latch bolt remains fully intact regardless of power state. That satisfies this test by design.

The Specified System Test: A Two-Part Test, Not a Blanket Rule

Three distinct specified systems apply to doors, each with its own compliance-schedule and inspection obligations:

• SS3.1 — Automatic Doors: powered door operators (automatic sliding or revolving doors).
• SS3/2 — Access Controlled Doors: keypad access, swipe card access, proximity sensor access, and delayed egress locking.
• SS3/3 — Interfaced Fire or Smoke Doors or Windows: electromagnetic door holders — devices that hold a fire or smoke door open during normal use and release it to self-close on an alarm signal. This is a different device from a security maglock (which holds a door closed) and is governed by NZS 4520:2010 §7 and AS 4178:1994.

MBIE’s own Compliance Schedule Handbook (Amendment 3, effective 14 February 2014 — the current version) sets out exactly what triggers SS3/2 listing, and it’s a two-part test, not “any door with electronic access control”:

• the door “has a security control measure installed on or as part of it,” and
• the door “could trap occupants in a building, should it fail to operate as required” [Compliance Schedule Handbook, Amendment 3, SS 3/2, cl A.1–A.2].

Both conditions have to be met. Where the interior lever stays mechanically linked to the latch independent of the electronics — a permanent mechanical connection that a power loss, firmware fault, or control board failure cannot interrupt — that kind of failure simply cannot trap anyone, so the second condition isn’t satisfied. On MBIE’s own wording, that door does not need to be listed as SS3/2.

Keep the manufacturer’s mechanical specification on file for any product this claim is based on. It’s what turns “this hardware provides mechanical egress” into a documented, defensible position if a BCA or IQP ever questions a specific installation — the classification follows directly from the product’s engineering, not from a judgment call made on-site. Doors that don’t have this kind of permanent mechanical independence — maglocks, or any release that depends on a solenoid or motor that could itself jam — remain SS3/2 and need compliance-schedule engagement, per the Building Act 2004 Schedule 1 exclusions covered above [Building Act 2004, Schedule 1, cl 1(3)(a), cl 10(b)].

Where a door is confirmed as SS3/2 (or SS3/3, for an interfaced fire/smoke door holder), expect ongoing obligations: periodic inspection that the door isn’t locked, barred, or blocked; testing of fail-safe operation during a power outage or alarm signal; testing of the connection to the alarm/emergency warning system; emergency power backup checks; and battery replacement on a set cycle. Records need to be kept for at least 24 months, with an annual declaration (Form 12A) provided by the IQP.

What This Means in Practice

A genuine mechanical-egress lock — the kind we generally propose — does not necessarily trigger the SS3/2 requirement, for the reasons above. It’s still the property owner’s responsibility to confirm this against their own Specified Systems Compliance Schedule with their Council (Building Consent Authority), not the IQP, since classification is a compliance-schedule content decision that only Council can make or confirm. In many cases this is a straightforward step rather than a hurdle: if the door has never carried a specified system, or you’re replacing existing mechanical-egress hardware with an equivalent product, there’s often nothing for Council to add. Where the door currently has an existing specified system on the schedule — for example, replacing an old maglock — Council will need to formally update the schedule to reflect the change, which is a routine amendment rather than a fresh consent process.

Common Scenario: Upgrading an Existing Mechanical Lever to a Smart Lock

The most common version of this job is replacing an existing standard mechanical lever or lock with an electronic smart lock (such as a SALTO-type lever) that keeps a return-action lever and a fully mechanical interior egress path, with the electronics controlling entry from the outside only. Two separate questions apply, and they usually both come back favourably:

• Compliance schedule (SS3/2): Not triggered. Because the interior lever stays mechanically connected to the latch independent of the electronics, the hardware cannot trap an occupant if the electronics fail — so it doesn’t meet the second half of MBIE’s own test, and isn’t a Specified System.
• Building consent: Typically exempt. Since the new hardware isn’t a specified system, doesn’t touch the building’s structure, and doesn’t involve a fire door or fire separation, this kind of lever swap usually qualifies as exempt interior alteration work [Building Act 2004, Schedule 1, cl 10].

What we can state as fact on a quote: the proposed lever is fitted with a compliant return-action handle [NZS 4121:2001 §7.3.7(b)] and provides true mechanical egress, with the access-control electronics affecting entry only. What still needs a sign-off, and from whom: if the door already carries an existing specified system (most commonly, if it’s replacing an older maglock or electric strike that was on the compliance schedule), the property owner needs Council to formally update the schedule to reflect the change — not the IQP, and typically a routine amendment rather than a new consent application. If the door has never had a specified system, there’s usually nothing further required.

Common Scenario: Repairing or Replacing a Failed Maglock

This is a different case from the smart-lock upgrade above, because a maglock has no independent mechanical path — it clearly meets both halves of MBIE’s test and is a Specified System regardless of what replaces it. The question here isn’t classification, it’s whether the swap itself is ordinary maintenance or a reportable change.

• Like-for-like replacement — swapping a failed maglock for an equivalent unit, same type, same position, same performance — is corrective maintenance under an existing compliance schedule entry, not a new classification event. This is covered by Building Act 2004, Schedule 1, clause 1(1)–(2) (“repair and maintenance… provided that a comparable building product… is used”), and matches how the industry itself treats it: the NZSA Good Practice Guideline classifies fault rectification as “Corrective Maintenance,” to be logged and retested, not resubmitted to Council.
• An actual change in design is different, and pulls the work back into needing Council engagement. This includes: the door wasn’t properly on the compliance schedule to begin with (so this is really a first-time classification, not a repair); the replacement isn’t genuinely comparable (different holding force, added delayed egress, new monitoring or interfacing capability); or the whole system is being substantially replaced rather than one component [Building Act 2004, Schedule 1, cl 1(3)(a)]. Swapping a maglock for a mechanical-egress smart lock is squarely this second category — that’s a genuine change from an SS3/2 door to a non-SS3/2 door, and Council needs to formally update the schedule to reflect the removal, exactly as covered in the scenario above.

Either way, the repair or replacement needs to be logged in the building’s maintenance records under the existing compliance schedule’s inspection and maintenance requirements — “doesn’t need Council sign-off” for a like-for-like swap isn’t the same as “no paperwork at all.”

6. Hidden Risks: The “Highest Level of Compliance” Assumption

A common and dangerous mistake is looking at an isolated room — such as an office, storeroom, server room, or bathroom — and automatically assuming it is not part of the building’s designated escape route or accessible path.

• Interconnected Spaces: In many New Zealand commercial properties (especially older buildings or structures that have undergone successive retail fit-outs), a rear office or staff storeroom might contain a designated exit path leading to external fire stairs, a back alleyway, or an adjacent fire cell.
• The Danger of Modification: Installing a non-compliant lock or a restrictive electronic access control system on what looks like a simple “internal door” can accidentally block a legally mandated escape route for an entire section of the building.
• The Golden Rule for Installers and Owners: Without direct access to the council-approved, signed-off architectural and fire safety plans of the building, you must assume the highest level of compliance. Unless a Fire Engineer or local Council documentation explicitly states otherwise, treat every door as a critical compliance path to prevent catastrophic liability.

7. Fire Engineers: Designing Outside the Standard Code

There are times when a building’s unique architectural design or complex security requirements mean it cannot realistically meet the standard “Acceptable Solutions” (C/AS2) framework. This is where a Fire Engineer steps in.

• The “Alternative Solution” Pathway: A qualified Fire Engineer can design a custom Alternative Solution for a property, using computer modelling, smoke extraction calculations, and specific occupancy profiles to justify hardware configurations that would otherwise fail a standard inspection.
• Where the Liability Sits: When a Fire Engineer designs an Alternative Solution, they assume the legal and professional liability for that specific configuration. Their design must be formally submitted to the local Council and added to the building’s official compliance documentation.
• The Rule for Modifications: If an owner or tenant requests a hardware setup that sits outside standard code parameters, it must be signed off by a Fire Engineer first. As hardware installers, we cannot invent custom compliance workarounds — without a signed, council-approved fire engineering report in your building records, any non-standard installation is an automatic failure.

8. Dedicated Fire Doors

Fire-resistant doorsets are tested as a complete system — leaf, frame, and hardware together — and NZS 4520:2010 governs how they must be installed and maintained.

• Tested Specimen Clearances: Clearances between leaf and frame, and leaf and floor, must be in accordance with the tested specimen. There is no single, universal millimetre figure that applies to every fire door — it depends on what that specific doorset was tested to [NZS 4520:2010 §5.3]. Always confirm the exact clearance tolerance for your doorset from the manufacturer’s tested specimen documentation rather than relying on a generic figure.
• Hardware Substitution: Swapping hardware on an already-installed fire door — a different lockset, closer, or panic device — is only permitted without further fire testing in narrow, defined circumstances: same manufacturer, no increase in material removed from the leaf, and materials of equal or greater melting point than what was tested. Anything outside that needs a full-scale fire-resistance test or a formal engineering assessment before it can be treated as compliant [NZS 4520:2010 §4.3.1, §4.4.3(a)].
• Self-Closing & Self-Latching: Every fire-resistant doorset must be self-closing (or automatic, reverting to self-closing on power loss), must not incorporate any bolt or function that could leave it non-self-latching, and electrically operated bolts must self-latch on power failure [NZS 4520:2010 §2.1.2–2.1.3].
• Required Signage Wording: Doorset signage must read exactly “FIRE DOOR, PLEASE KEEP CLOSED,” or “FIRE DOOR, KEEP CLEAR” where a hold-open device is fitted — that is the exact required wording, not a paraphrase [NZS 4520:2010 §6.5.1].
• Labelling: Every fire-resistant doorset needs a permanently fixed, non-combustible label at approximately 1.5m above floor level, on the hinge stile edge of the leaf and on the frame, stating the standard, manufacturer, doorset ID number, fire-resistance rating in minutes, and date of manufacture. The manufacturer keeps a register and must supply a signed installer’s declaration before labels are issued [NZS 4520:2010 §6.1–6.4].
• No Unlatching Holds: You cannot install hold-open arms on door closers or use manual “passage mode” functions that keep the latch bolt retracted on a fire door.

Note: a fire door forming part of a fire separation is very likely already its own Specified System — SS15.3, “Fire separations” — independent of any door hardware fitted to it. That’s a separate category from SS3.3 (“Interfaced Fire or Smoke Doors or Windows,” which specifically covers electromagnetic door holders). Don’t assume a fire door is outside the specified-systems framework just because it has no holder or interface — the separation itself is likely already on the building’s compliance schedule.

9. Toilet and Bathroom Doors

Bathroom doors across New Zealand commercial and retail spaces carry specific privacy and emergency-access obligations — though exactly which doors they reach is not fully settled by the standards themselves.

Indicator Bolts: A Confirmed Requirement, With an Open Question on Scope

• NZS 4121:2001 §10.5.5 (“Toilet doors”) requires: (a) a suitable indicator bolt, simple enough to operate for someone with limited hand movement; (b) the door must be able to be opened from the outside in an emergency; and (c) pull rails and kick plates must be fitted.
• The broad reading: §10.1 (“General”) defines a “toilet facility” as a combined space containing standard WC cubicles and/or urinals alongside the accessible unit. On that definition, “all doors serving toilet facilities” in §10.5.5 could reasonably extend to every cubicle door in the facility, not just the accessible one.
• The narrow reading: the standard’s own commentary for this clause (C10.5.5) justifies the requirement in wheelchair-specific terms — the need for a 1500mm turning circle behind an inward-opening door — a concern that doesn’t apply to an ordinary WC cubicle. That points toward the requirement being intended for the accessible cubicle’s door specifically.
• We can’t resolve this from the standard’s text alone, and we’d rather say so than pick a side. Confirm the intended scope with an accessibility consultant or your Council’s Building Consent Authority before finalising a hardware schedule for standard (non-accessible) cubicles.

G1/AS1’s Privacy Bolt Clause — Also Accessible-Specific

G1/AS1 clause 4.2.6 requires “easily operable privacy bolts (to indicate whether the toilet is occupied),” mounted no higher than 1200mm above floor level. This clause sits inside G1/AS1’s Section 4.0, “People with Disabilities” — confirmed by its position in that section, and by clause 4.2.7 immediately after it, which states outright that “NZS 4121 Section 10 is also an acceptable solution for people with disabilities.” On the document itself, this is an accessible-facility requirement, not a general mandate for every commercial WC — we could not confirm a broader G1/AS1 requirement from this source. A standard cubicle only needs a secure latch to satisfy basic privacy performance. Fitting an indicator bolt there anyway is common, sensible trade practice rather than a legal requirement — it improves user experience and reduces the wear that comes from people shaking or forcing a door to check if it’s occupied.

Emergency Access

For a door serving an accessible toilet facility, the standard’s wording is that it must be able to be opened from the outside in an emergency — it does not mandate a specific mechanism. A coin-slot or screwdriver release is one common way installers achieve this outcome, not the only compliant method.

A Configuration We Can’t Yet Confirm

Whether a shared lobby door serving several stalls — including an accessible one — needs the same indicator bolt and emergency-access provisions as the accessible cubicle’s own door isn’t something the clause spells out directly. Until it’s confirmed, treat this configuration on a case-by-case basis with an accessibility consultant rather than as a fixed rule.

10. Accessible Doorways (General)

The legal basis for all of this sits in the Building Act 2004 itself, not just the Building Code: §118 requires reasonable and adequate access and sanitary facilities for people with disabilities on the construction or alteration of any building the public is admitted to, and §119 states that NZS 4121:2001 “is to be taken as an acceptable solution” for that duty [Building Act 2004, §118–§119]. That’s why the clause references throughout this guide carry statutory weight, not just Building Code Acceptable Solution status.

• Minimum clear doorway width on an accessible route: 760mm [NZS 4121:2001 §7.3.1].
• Door handle mounting height: 900–1200mm above finished floor level, optimum 1000mm [NZS 4121:2001 §7.3.7(a)].
• Maximum force to push or pull open a non-fire door shall not exceed: 38N for an exterior hinged door; 22N for an interior hinged door; 22N for a sliding or folding door [NZS 4121:2001 §7.3.5(a)-(c)].

Lever Handle Returns

Handles operating locks and latches on accessible, fire, and egress routes must have a lever action, and the end of the handle must be returned towards the door face [NZS 4121:2001 §7.3.7(b)]. A straight, unreturned “finger” lever does not meet this requirement. In practice, a returned lever end also avoids a snag point during an evacuation and stays operable with a closed fist or forearm — the standard’s own reasoning for the requirement is that a twist, turn, or unreturned action doesn’t give people with limited hand function an adequate grip.

Quick Reference: What’s Confirmed

We’ve presented this information in prose rather than a summary table, since compliance thresholds and dimensions vary by room type, occupancy, and building classification — a flattened table risks misrepresenting the specific figure that applies to your premises. The points below are confirmed against the standards cited throughout this guide:

• Panic fastening thresholds: 500 occupants (retail) / 100 occupants (crowd activities) — not a flat 250-person rule.
• Locking devices on escape routes must be visible, operable without a key in a fire, and fail-safe (or an equivalent alternative) if electromechanical.
• The fire door hardware substitution exemption is narrow: same manufacturer, no extra material removed, equal-or-greater melting point.
• Fire door clearances are specimen-specific — there is no universal millimetre figure.
• Fire doors must self-close, self-latch, and carry the exact required signage wording.
• Indicator bolts, pull rails, kick plates, and outside emergency-access are confirmed for doors serving an accessible toilet facility (NZS 4121 §10.5.5); G1/AS1 §4.2.6’s privacy bolt requirement is likewise scoped to accessible facilities under that document’s “People with Disabilities” section. Whether §10.5.5 extends to every standard cubicle door within a facility, or only the accessible one, is a genuine open question — see Section 9.
• Accessible doorway width is 760mm; handle height is 900–1200mm; non-fire door opening force is 38N (exterior hinged), 22N (interior hinged or sliding/folding).
• Lever handles operating locks and latches on accessible, fire, and egress routes must have their ends returned towards the door face — a straight, unreturned lever does not comply.
• Access-controlled doors (keypad, swipe card, proximity, or delayed egress) fall under Specified System SS3/2 — separate from automatic doors (SS3.1) and interfaced fire/smoke door holders (SS3/3) — only where the door also “could trap occupants… should it fail to operate as required” [Compliance Schedule Handbook, Amendment 3, SS 3/2]. Hardware with a documented, permanent mechanical interior release — independent of the electronics — does not meet that test and is not SS3/2.

A few specifics are still open pending further confirmation with a fire engineer, accessibility consultant, or your Territorial Authority: the scope of the indicator-bolt/pull-rail requirement across standard vs. accessible cubicle doors, and the lobby-door-to-accessible-toilet locking question. Treat these as items to confirm for your specific building rather than settled rules.

Before You Book Installation: Who’s Responsible for What

Responsibility for building code compliance sits with the building owner, not the hardware installer. Under the Building Act 2004, carrying out building work without a required consent is not something an installer can authorise on your behalf — it’s the owner’s obligation to establish whether a consent, an exemption under Schedule 1, or an update to the building’s Specified Systems Compliance Schedule applies before work begins [Building Act 2004, §40, §42A, §112, Schedule 1].

• If the work is a straightforward like-for-like hardware replacement that doesn’t touch a fire door or a specified system, it’s likely exempt from consent — see Section 8’s fire-door caveat and Section 5’s specified-system breakdown.
• If it adds or changes electronic access control (keypad, swipe, proximity, delayed egress): hardware with a documented, permanent mechanical interior release isn’t SS3/2 (see Section 5), and this is usually a simple confirmation with your Council rather than a lengthy process — particularly if the door has never carried a specified system before. Anything else — maglocks, or a release that depends on a solenoid or motor — should be treated as SS3/2 and confirmed with your Council. If it touches a fire door or fire separation, assume consent/compliance-schedule engagement is needed regardless.
• We price and install based on the hardware specification you or your consultant provide. Securing any required building consent, exemption confirmation, or compliance schedule amendment is the property owner’s responsibility, and should be arranged before installation work begins.