What is a Class 9a building?
The health-care classification, what triggers it, and why it should be settled before you sign a lease rather than during documentation.
The short answer
Most people meet this term when somebody tells them their project "might be 9a", usually without explaining what that means for the building or the budget.
Key points
- Class 9a is the health-care building classification under the National Construction Code.
- The trigger is patients who may be unable to evacuate without assistance, not the word 'medical'.
- It brings fire separation, construction, egress, alarm and detection requirements.
- Consulting alone rarely triggers it; procedures and sedation frequently do.
- It is a certifier's determination, and it belongs before the lease.
Most people meet this term when somebody tells them their project "might be 9a", usually without explaining what that means for the building or the budget.
What a Class 9a building is, and what triggers it
Class 9a is the health-care building classification under the National Construction Code. It covers buildings, or parts of buildings, used to provide treatment to occupants who may be unable to evacuate themselves without physical assistance.
That last clause is the whole test, and it is the part people miss. The trigger is not the word "medical" and it’s not whether you call yourself a clinic. It’s whether the people in your building can get themselves out.
Which is why a GP clinic full of ambulant patients generally is not 9a, and a facility performing procedures under sedation generally is. Somebody recovering from sedation cannot self-evacuate, and the building has to account for that.
What it requires
Class 9a is a substantially heavier construction standard than an office or a shop.
- Fire-resisting construction and separation, including to walls, floors and ceilings that in a Class 5 or 6 tenancy would be ordinary plasterboard
- Egress provisions with different travel distances and exit widths, sized on the basis that occupants may need assistance
- Alarm and detection, sometimes reaching beyond your tenancy into the base building
- Structural fire resistance appropriate to the classification
- Smoke hazard management, which interacts with the mechanical design
Several of these are base building issues rather than tenancy issues, which is exactly why they can be unsolvable. A fitout contractor can’t add a second fire stair to somebody else's building.
The grey zone
Between "consulting rooms" and "day hospital" sits a wide band where reasonable people disagree, and it is populated by real practices: minor surgery in a GP clinic, dermatology excisions, endoscopy, oral and maxillofacial surgery, cosmetic procedures under sedation, certain ophthalmology.
The variables a certifier will weigh include the procedures performed, whether sedation or anaesthesia is used and to what depth, whether patients recover on site, how long they stay, and their capacity to self-evacuate at any point in that journey.
Which means this is a determination on your specific scope of practice, not a lookup. Take the scope, not the building, to the certifier.
Why it belongs before the lease
Because the answer can be that this tenancy cannot be Class 9a.
Fire separation may not be achievable without works to the base building the landlord will not permit. Egress may be inadequate and unfixable within the tenancy. There may be nowhere with the structural capacity and the acoustic separation to house the mechanical plant that a procedure room needs.
A certifier can usually give a view within days, and it costs a fraction of one month's rent. Signing first and asking later is how projects end up abandoned with a lease still running.
What it means for the budget
Day procedure work runs at an indicative $2,400 to $3,600 per square metre on a warm shell, excluding equipment and GST, against $1,400 to $2,200 for general practice. Licensed day hospital work runs higher again.
The gap is mechanical services first, then the construction the classification requires. Finishes barely feature. More detail on hospital and day surgery fitouts and on day procedure at a smaller scale.
And licensing is separate again
Classification is a building question, assessed by a certifier under the NCC. Whether you need a licence to operate a day procedure service is a health question, assessed under state legislation, and the requirements differ between states. Licensing can dictate rooms the Code doesn’t.
Both need establishing before design. Neither substitutes for the other, and neither is the planning approval.
Sources and further reading
Classification is determined by a registered certifier or building surveyor on your specific scope. Nothing on this page substitutes for that determination.
The National Construction Code: building classification, fire separation, egress, sanitary provisions and access.
Source for AS/NZS 4815 and 4187 reprocessing, AS 1428.1 access and AS 1668.2 ventilation. The standards themselves are purchased, not free.
Room-by-room design guidance and standard components used across Australian health projects, including consulting, treatment and sterilising rooms.
Questions
What is a Class 9a building?
The health-care building classification under the National Construction Code. It covers buildings, or parts of buildings, used to provide treatment to occupants who may be unable to evacuate themselves without physical assistance.
What triggers Class 9a?
Whether occupants can self-evacuate, rather than whether the use is described as medical. A GP clinic of ambulant patients generally isn’t Class 9a; a facility where patients are sedated and recover on site generally is. It is a determination made on your specific scope of practice.
What does Class 9a require?
Fire-resisting construction and separation, egress provisions with different travel distances and exit widths, alarm and detection that can extend beyond your tenancy, structural fire resistance and smoke hazard management. Several are base building issues rather than tenancy ones.
Can any tenancy be made Class 9a?
No. Fire separation may not be achievable without base building works the landlord won’t permit, egress may be inadequate and unfixable within a tenancy, and there may be nowhere to house the mechanical plant. A certifier can usually give a view within days, and it should happen before you sign.
Is Class 9a the same as being a licensed day hospital?
No. Classification is a building question assessed by a certifier under the NCC. Licensing is a health question assessed under state legislation, and it can require rooms the Code does not. Both need establishing before design.
How much more does a Class 9a fitout cost?
Day procedure work runs at an indicative $2,400 to $3,600 per square metre on a warm shell, excluding equipment and GST, against $1,400 to $2,200 for general practice. The gap is mechanical services first, then the construction the classification requires.
Send us the floor plan
A site assessment tells you what the tenancy can take and what it will cost to get there, ideally before you have signed for it.