ArtBuild template ArtBuild template · All of Canada
Construction change order
Record an agreed change: scope, price, schedule and signatures.
- Version
- 2026.1
- Last updated
- October 24, 2026
Prepared by ArtBuild to help you organise your paperwork. It is general information, not legal advice, and it has not been reviewed by a lawyer. Check the rules for your province or territory before you act.
Part of the Change Orders and Extra Work Kit: start with its guide, and download the whole kit there.
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Identify the revision and decision
Use this form to record an expressly agreed change. Until authorization is recorded, mark it proposed. A signature confirming attendance or daily quantities is not automatically authorization of this scope, price or schedule.
- Project address and original contract date
- Owner and contractor legal names
- Change ID revision and issue date
- Status proposed or approved
- Request or instruction reference
- Authorized representatives and authority basis
| Original scope reference | Addition deletion or substitution | Revised scope and limits |
|---|
- Attachments drawings and specification revisions
- Exclusions assumptions and unresolved interfaces
Record price and schedule separately
| Price item | Amount CAD | Basis / attachment |
|---|---|---|
| Net direct cost | [enter] | [labour material equipment subcontract less omissions] |
| Overhead | [enter] | [rate and eligible base] |
| Markup | [enter] | [rate and eligible base] |
| Net change before tax | [enter] | [reconciled subtotal] |
| Tax and gross change | [enter] | [tax basis and amount] |
- Price basis fixed unit rates or time and materials
- Cap allowance or quote validity if applicable
- Payment milestone invoice requirements and holdback basis
- Original completion date and affected activity
- Proposed calendar or working day impact and basis
- Agreed revised milestone or schedule reservation
Separate anticipated duration from an agreed extension. Record overlapping delays and dependencies; do not add every activity delay to the project completion date.
- Current contract value before this change excluding tax
- Revised contract value after this change excluding tax
Authorization and distribution
The parties record agreement only to the described revision and completed terms. List any matter still reserved, including price components or schedule effects. Do not insert broad waivers or releases without qualified review.
- Owner representative name title and authority
- Owner signature and date
- Contractor representative name title and authority
- Contractor signature and date
- Other required consultant or lender approval
- Conditions that must be satisfied before starting
- The approved revision matches the pricing attachment and scope comparison.
- Omissions are credited once and allowances are not duplicated.
- Tax treatment and contract total are reconciled.
- Site supervisor has the approved scope and restrictions.
- Copies sent to authorized parties and register updated.
- Distribution list and date
- Work start instruction and limits
- Internal review and unresolved legal questions
This draft does not determine the effect of an unsigned change or override the governing contract or consumer legislation.
Before you act: this document is general information prepared by ArtBuild to help you organise facts and paperwork. It is not legal advice and has not been reviewed by a lawyer for your situation. Rules differ by province and territory and change over time. Check the official source for your project, and for deadlines, liens, court or insolvency steps, speak with a lawyer licensed where the project is located.