Anatomy of a CCDC contract

A CCDC contract is not one document. It is a short Agreement, a page of defined terms, thirteen Parts of General Conditions, the owner's Supplementary Conditions and a list of every specification, drawing and addendum that forms the deal. Owners who know how those parts fit, and which one wins when they disagree, can find any answer in the contract in minutes.

Learning outcomes

• Describe the parts of a CCDC contract: the Agreement, the Definitions, the General Conditions and the Supplementary Conditions, using CCDC 2-2020 as the example.
• Explain how Article A-3 lists the Contract Documents, and why a document that is not listed is not part of the contract.
• Apply the order of priority in GC 1.1.5 to resolve a conflict between documents.
• Assemble and check the Contract Documents list for a real project, using Northgate.

The lesson

One contract, several documents

Most CCDC forms share the same architecture. The parties fill in a short Agreement, which incorporates a set of Definitions and a long set of General Conditions published by CCDC. The owner then adds project-specific documents: Supplementary Conditions that amend the standard text, and the specifications and drawings that describe the building. Article A-3 of the Agreement ties all of it together by listing what counts as a Contract Document. Figure 1 shows the package for CCDC 2-2020, the stipulated price form introduced in Lesson 2.

The Agreement: the deal on a few pages

The Agreement between Owner and Contractor is the part the parties actually fill in and sign. In CCDC 2-2020 it has eight Articles:

• A-1 The Work. Names the project and the Consultant, and sets the dates. In the 2020 edition, Article A-1 is where the parties write the date the contractor must reach Ready-for-Takeover, the new completion milestone covered in Lesson 7.
• A-2 Agreements and Amendments. Confirms that the Contract is the whole agreement and replaces earlier negotiations, and that it can only be changed in the ways the contract allows.
• A-3 Contract Documents. Lists the Contract Documents. The Agreement, Definitions and General Conditions are named in the form; the parties list everything else.
• A-4 Contract Price. States the stipulated price. The price excludes value added taxes, which are shown separately.
• A-5 Payment. Sets how and when progress payments, holdback and final payment are made, by reference to the applicable Payment Legislation, which in Ontario is the Construction Act.
• A-6 Receipt of and Addresses for Notices in Writing. Says how a formal notice is delivered and when it is treated as received. The 2020 edition changed these rules, so check them against your notice procedures.
• A-7 Language of the Contract and A-8 Succession. Short administrative Articles on language and on the contract binding the parties' successors.

The Agreement sits at the top of the order of priority, so a typo in Article A-1 beats a correct date anywhere else.

The Definitions: capital letters carry meaning

The Definitions section in CCDC 2-2020 defines 28 terms, from Change Directive to Working Day. Whenever a defined term appears with capital letters in the contract, it carries that defined meaning, not its everyday one. "Work" with a capital W is the total construction the contract requires; "Product" covers the materials, machinery, equipment and fixtures that become part of the Work; "Working Day" excludes weekends and statutory holidays. The 2020 edition added Payment Legislation and Ready-for-Takeover and simplified Substantial Performance of the Work. Owners who write their own documents, such as specifications or the Supplementary Conditions, should use the defined terms exactly and avoid inventing near-synonyms like "the Project Works" that the contract never defines.

The General Conditions: the rulebook

The General Conditions (GCs) are the bulk of the form. CCDC 2-2020 organizes them into 13 Parts, each with numbered GCs, which is why people cite the contract by GC number. Figure 2 maps the Parts with one or two GCs an owner will use often.

Two GCs in Part 1 explain how the whole package is read. GC 1.1.2 says the documents are complementary: what one requires, the contract requires, even if it is shown in only one place. GC 1.1.4 says the contractor is not responsible for errors in the Contract Documents but must report any it finds before carrying on with the affected work. Part 2 then makes the Consultant the first interpreter of the documents (GC 2.2.6), so a question about what the documents mean goes to the Consultant before it goes anywhere else.

The GCs are standard text, and they should stay that way. CCDC forms are licensed, and the convention across the industry is that changes go into Supplementary Conditions, not into the printed form, so that everyone can see exactly what was changed.

The Supplementary Conditions: the owner's amendments

Supplementary Conditions amend named clauses of the standard form: delete paragraph X, add paragraph Y, replace a definition. They are where the owner's risk decisions from Lesson 1 are written in. Typical topics include payment and holdback mechanics, the schedule requirements, insurance limits, concealed conditions, warranty and dispute resolution. Industry groups also publish recommended sets; in Ontario, the OAA and the Ontario General Contractors Association issued joint recommended Supplementary Conditions for CCDC 2-2020, first in 2021 and revised in 2024.

One drafting point trips up many owners. Supplementary Conditions rank third in the order of priority, below the Agreement and the Definitions. The OAA points out that amendments to Articles or Definitions buried inside the Supplementary Conditions carry only Supplementary Conditions priority. Issue them in their own sections, as amendments to the Agreement and to the Definitions, ahead of the Supplementary Conditions proper. Lesson 10 covers how to write Supplementary Conditions in detail.

The rest of the Contract Documents

Below the contract text sit the documents that describe the building: Division 01 (General Requirements), the technical specifications, material and finishing schedules, and drawings, plus addenda issued during tender. Since 2020, CCDC publishes its own master Division 01, and several provisions that used to be in CCDC 2-2008, such as rules on documents kept at the site, moved into it. That means a Division 01 section can now carry obligations owners once found in the GCs, so it deserves the same review.

Article A-3 is the gatekeeper. A document is part of the contract only if A-3 lists it, ideally with its date, revision and page count or drawing number. A geotechnical report issued "for information", a bid form, a meeting minute or a Letter of Intent is not a Contract Document unless it is listed.

Order of priority: who wins a conflict

Documents written by different people at different times will sometimes disagree. GC 1.1.5 sets the order of priority, from highest to lowest, shown in Figure 3. The owner's Supplementary Conditions rank above the GCs, which is what lets them amend the standard text.

Three cautions apply. First, the ladder is a tie-breaker, not a design tool. Because the documents are complementary, it applies only when two requirements genuinely cannot both be met; a requirement shown only on the drawings is still required. Second, the parties can change the order through the Supplementary Conditions, but it was set by CCDC with industry input as part of a balanced risk allocation, so change it only for a reason. Third, do not assume a project-specific document outranks the CCDC text. In a 2024 Ontario case, Knox Presbyterian Church v. Oakwood Designers & Builders (2024 ONSC 3131), the court held that a project-specific contract document under CCDC 14 ranked below the CCDC form's arbitration provisions.

Northgate worked example

The Northgate Distribution Centre (fictional) is under a CCDC 2-2020 stipulated price contract between Northgate Logistics Inc. (fictional) and Halvorsen Builders Ltd. (fictional), executed on January 11, 2027 for $34,950,000 excluding HST (Lesson 4 explains why stipulated price fits). Before execution, the owner's representative checked the Article A-3 list line by line.

Now test the order of priority. Suppose a Division 01 schedule section copied from an older project told the contractor to submit its baseline schedule within 15 working days, while the Supplementary Conditions say 30 days after execution. The Supplementary Conditions rank above Division 01, so the 30-day requirement governs, and the baseline is due on Wednesday, February 10, 2027. The owner's representative should still fix the Division 01 text by addendum before tender, because a conflict the order of priority resolves is still a conflict someone will argue about.

A second test: suppose the dock door schedule in the drawings showed one leveller capacity and the technical specification section another. Specifications rank above drawings, so the specification governs, but GC 1.1.4 also obliges Halvorsen to report the discrepancy, and the Consultant interprets it under GC 2.2.6. Ridgeline's answer, issued as a Supplemental Instruction, would close the question on the record.

Owner's move

• Read the Agreement first, slowly. Dates, price and the A-3 list carry the highest priority in the contract. Have a second person check every number.
• Control the A-3 list. List every document with its date, revision and page or sheet count. Decide on purpose which reports are Contract Documents and which are for information only.
• Issue amendments in the right place. Put changes to Articles and Definitions in their own sections ahead of the Supplementary Conditions.
• Review Division 01 with the Supplementary Conditions. Both are written for the project, and they often contradict each other when one is copied from a past job.
• Get legal advice on the package. A construction lawyer should review the Agreement entries, the amendments and the Supplementary Conditions together.

Common mistakes

1. Burying Article changes in the Supplementary Conditions. They then rank below the Articles they were meant to change.
2. Leaving documents off A-3, or listing them loosely. "Drawings as issued" does not say which revision. Disputes start with which version was the contract.
3. Using the order of priority to ignore requirements. The documents are complementary. A requirement shown in only one place is still required.
4. Editing the printed GCs. Silent edits hide changes from bidders and can breach the CCDC licence.
5. Using lower-case lookalikes for defined terms. "Substantial completion" in a specification is not the defined Substantial Performance of the Work, and the gap invites argument.

Quick quiz

1. Which Article of the CCDC 2-2020 Agreement lists the Contract Documents?

   1. A-1
   2. A-3
   3. A-5
   4. A-8

2. Under the CCDC 2-2020 order of priority, which ranks highest?

   1. General Conditions
   2. Supplementary Conditions
   3. Division 01
   4. Drawings

3. An owner puts a change to Article A-5 inside its Supplementary Conditions. What priority does that change carry?

   1. Agreement priority
   2. Supplementary Conditions priority
   3. General Conditions priority
   4. None; it is void

4. The technical specification and the drawings disagree on a product. What happens first?

   1. The contractor picks the cheaper option
   2. The drawings govern because they are newer
   3. The contractor reports the discrepancy and the Consultant interprets; the specification ranks above the drawings
   4. The dispute goes straight to adjudication

5. Northgate's geotechnical report was issued with the tender for information and is not listed in Article A-3. Is it a Contract Document?

   1. Yes, because it was issued with the tender
   2. No, because it is not listed in A-3
   3. Yes, because Division 01 mentions it
   4. Only if the contractor relied on it

Show answers and explanations

1. B. Article A-3 names the Agreement, Definitions and General Conditions and has space for the parties to list every other Contract Document.
2. B. The order runs Agreement, Definitions, Supplementary Conditions, General Conditions, Division 01, technical Specifications, schedules and Drawings.
3. B. A change placed inside the Supplementary Conditions takes their rank. Issue amendments to the Agreement separately to keep Agreement priority.
4. C. GC 1.1.4 requires the contractor to report errors it finds, and GC 2.2.6 makes the Consultant the first interpreter. If the conflict is real, specifications rank above drawings.
5. B. Only documents listed in A-3 form part of the contract. Whether the contractor can rely on an information-only report is a separate legal question; get advice.

Key terms

Agreement

The signed front section of a CCDC form, with Articles A-1 to A-8 in CCDC 2-2020.

Article A-3

The Article of CCDC 2-2020 that lists the Contract Documents.

Definitions

The defined terms of the contract, which apply wherever the term appears with capital letters.

General Conditions (GCs)

The standard terms of the form, arranged in Parts and cited by number, such as GC 6.4.

Supplementary Conditions

The owner's project-specific amendments to named clauses of the standard form.

Division 01

The General Requirements section of the specifications; CCDC publishes a master version for use with its 2020-era forms.

Order of priority

The ranking in GC 1.1.5 that decides which Contract Document governs when two genuinely conflict.

Complementary documents

The rule in GC 1.1.2 that a requirement in any Contract Document binds as if it were in all of them.

References

1. Jennifer Sokal, MLT Aikins LLP, The interplay between CCDC documents and other construction documents (November 6, 2024; Article A-3, GC 1.1.5, Knox Presbyterian Church v. Oakwood Designers & Builders, 2024 ONSC 3131).
2. Ontario Association of Architects, Practice Advisory: Priority of Documents (amendments to Articles and Definitions).
3. Toronto District School Board, Supplementary Conditions for use with CCDC 2 (2020) (Part titles of the General Conditions; paragraph 1.1.5.1).
4. Ontario Association of Architects and Ontario General Contractors Association, Recommended Supplementary Conditions for CCDC 2-2020 (September 2021, revised March 2024).
5. Ontario Association of Architects, Practice Tip PT.23.11: CCDC 2-2020 Overview of Changes (new Definitions, Division 01, notices in A-6).
6. Andrew Wong, Ethan McCarthy and Jagriti Singh, Osler, Introducing CCDC 2 (2020) (Ready-for-Takeover date in Article A-1; Division 01).
7. Canadian Construction Documents Committee, CCDC 2-2020 Stipulated Price Contract (purchase the form from CCDC or an authorized distributor).

Verified on November 4, 2026.

Next lesson in this trackCCDC 2-2020 walkthrough: what changed from 2008