Module 1 · Entry point
Building classifier
Answer in plain English. The tool returns the NCC class, whether QDC MP 6.1 applies, the fire safety installations you should expect to find, and what to ask on site.
The questions
What mainly happens in this building?
Pick the dominant use. Mixed-use buildings get classified part by part — you can run the wizard again for each part.
Do people sleep there?
How is the living space arranged?
Only relevant where people sleep there.
Could occupants evacuate themselves unaided?
Is there a carpark, basement or separate storey with a different use?
This decides whether you are quoting one line or several.
Result
The two rules that decide real jobs
Mixed classification
Every part of a building is separately classified. A single tower can be Class 7a carpark + Class 6 retail + Class 5 offices + Class 2 apartments, all at once — each part carries its own installations and its own passive door frequency.
BDM flag: A mixed-use building is a multi-line quote, not one line. Walk each part separately and price each part separately.
NCC Part A6 — Building classificationThe 10% ancillary rule
Where a part of a building has a different purpose and is not more than 10% of the floor area of the storey it is on, it may adopt the classification of the major use of that storey.
Example: An 8% office inside a single-storey warehouse makes the whole building Class 7b.
BDM flag: Measure it. If the office creeps past 10% of the storey, you have a second classification and a second set of obligations.
NCC Part A6 — Building classificationAll NCC classes
Tap any class to load it into the result panel above.