How construction stages are defined in contracts, and why it matters
A stage is whatever the contract says it is, and many contracts say very little. Where the definition is vague, the developer's certifier supplies one, and your payment falls due on their reading rather than on a state you could have checked.
Three ways a stage gets defined
Most contracts mix all three, and the mix is not accidental. The stages defined by physical state tend to be the early ones; the later and larger payments more often rest on a name or a signature.
| How it is written | Example | How checkable it is |
|---|---|---|
| By physical state | All floor slabs poured to level 8, block work complete to level 6 | High: somebody can look and say yes or no |
| By named milestone | Structure complete, finishes commenced | Low: the name has no fixed meaning |
| By certificate | As signed off by the supervising engineer | None: the document is the definition |
Why the name is not the definition
'Structure complete' can mean the frame is topped out, or that the frame is topped out and every slab is poured, or that the building is watertight. Three readings, months apart in practice, and the contract may not choose between them.
When it does not, the choice is made later by somebody with an interest in the earlier reading. That is not a hypothetical: stage disputes are one of the most common off-plan disputes, and they almost all start here.
What a good definition looks like
- It names a physical state, not an activity or a phase.
- It is specific about extent: which floors, which elevations, how much.
- It can be answered yes or no by somebody standing on the site.
- It does not depend on a document produced by one party.
What to do with a vague one
- 01Before signing: ask for the definition to be written in, in physical terms. This is a common and often accepted request.
- 02After signing: write down your own reading of each stage and send it, so a difference surfaces before an invoice rather than after.
- 03At each invoice: record the actual state with dates and photographs, whatever the certificate says.
- 04Keep the certificates alongside the record. Where the two diverge, the divergence is the point.
Questions on this
Can a stage be partly complete?
In reality constantly; in most contracts not at all. Payments are usually binary, which is why a vague definition resolves in favour of whoever is issuing the invoice.
Who is the supervising engineer working for?
Normally engaged and paid by the developer, and independent of the contractor. Those are different things and only the second is usually guaranteed.
Is a photograph enough to dispute a stage?
Only alongside the definition it is being measured against. A photograph answers what is there; the contract answers whether that is enough.
Read one before you buy one
The specimen shows the whole structure: status, what each payment was meant to buy, the forecast with its range, the photographic record and the limits of what was checked.