Project milestone

Project milestone is one of Demiton's published registers for Australian civil construction. Delivery milestones: planned and actual dates for practical completion, defects liability and other key dates. Demiton keeps it current from the systems a contractor already runs and publishes the record's shape as a versioned JSON Schema, so the same question works whichever system produced the record.

Part of Projects in the register catalog.

Register ID

project_milestoneUse this name to ask for the register. The API calls it a shelf ID.

Each record is

A stateThe current value of something, replaced when it changes.

Status

DeclaredDefined, and fills when a source produces its first record.

Data

OrganisationPrivate to each organisation's own workspace.

Version

v1 (1.0.2)Current version.

Download JSON SchemaSee an example record

Standards

This register's contract was designed against these standards and laws. Holding these records does not by itself certify compliance.

• AS 2124General Conditions of ContractAustralia · 1992 (superseded) · clause Annexure Part A · paywalled, from a secondary description
• AS 4000General Conditions of ContractAustralia · 1997 (superseded edition, still in use) · clause cl 37.1/37.2 (per commentary) · paywalled, from a secondary description
• AS 4000General Conditions of Contract (construct only)Australia · 2025 · clause cl 37.2 (per commentary) · paywalled, from a secondary description
• AS 4902General Conditions of Contract for Design and ConstructAustralia · 2000 (R2005); status unverified · paywalled, from a secondary description
• Security of paymentVic security of payment (2026 reforms)Australia · as amended 15 Apr 2026 · clause s 14C · public summary
• Security of paymentSA security of paymentAustralia · as amended · public summary
• OC4IDSOpen Contracting for Infrastructure Data StandardInternational · 0.9.5 (switcher shows 0.9.4; unverified) · clause project milestones · verified against full text
• Construction Contracts Act 2002 (NZ)Construction Contracts Act 2002 (2002 No 46)New Zealand · as at 5 Oct 2023 · clause s 20(1) · verified against full text
• Housing Grants, Construction and Regeneration Act 1996 Part IIHGCRA 1996 Part II (Payment), as amended by LDEDCA 2009United Kingdom · as amended (2011) · clause ss 110-113 · verified against full text
• SI 1998/649Scheme for Construction Contracts (England and Wales) Regulations 1998United Kingdom · as amended 2011 · clause para 5 · verified against full text

Connectors

Connected today

Demiton keeps this register current from these systems now.

No system fills this register yet.

On the roadmap

Systems in the planned connector rollout that can fill this register. Partial means the system holds only some of its fields.

• MYOB Acumatica
• Oracle Aconex
• PayappsPartial
• Procore

Fields

7 fields: 3 required, 4 optional.

Required

Every record carries these fields.

nameText

The milestone / dated event label the contract is measured against.

Example: Practical Completion

sourceText

Whether the milestone was inferred by extraction or entered by a person.

Example: entered

planned_dateDateYYYY-MM-DDUnit: date

The contractually planned date of the milestone.

Example: 2026-11-30

Optional

Present when the source system records them.

confidenceText

Qualitative extraction confidence.

Example: high

actual_dateDateYYYY-MM-DDUnit: date

The date the milestone actually occurred; null while it is forecast.

descriptionText

Free-text detail about the milestone.

Example: Contractual practical completion date for Emerald Street …

milestone_typeText

Class of event (start, design, construction, practical_completion, milestone)

Example: practical_completion

Example record

A sample from Bridgeworks Group, Demiton's demonstration company. The values are illustrative; the shape is exactly what the contract describes.

project_milestone.example.json

{
  "confidence": "high",
  "description": "Contractual practical completion date for Emerald Street Rejuvenation",
  "milestone_type": "practical_completion",
  "name": "Practical Completion",
  "planned_date": "2026-11-30",
  "source": "entered"
}

Use this contract

The contract is a standard JSON Schema (draft 2020-12) document, so any JSON Schema validator can check a record against it. Keywords starting with x-demiton- add Demiton's own meaning, such as units and requiredness, and validators ignore them.

Schema URL

https://docs.demiton.io/registers/project_milestone/v1.json

Show the full JSON Schema

Loading the schema…