CCDC 17: trade contracts under a CM

When an owner hires a construction manager under CCDC 5A-2025, nobody holds a single price for the building. The owner signs a separate contract with every trade, and CCDC 17-2025 is the standard form for those contracts. Each one carries a stipulated price, its own payment cycle, its own holdback and, for some trades, its own Ready-for-Takeover test. This lesson shows how the pieces fit and where the owner's risk sits.

Learning outcomes

• Explain where CCDC 17-2025 fits beside CCDC 5A-2025 and CCDC 5B-2025, and who the parties are.
• Describe the roles of the owner, the construction manager and the Consultant on a CCDC 17 trade contract.
• Apply the 2025 payment, holdback, Ready-for-Takeover and early occupancy rules to a package of trade contracts.
• Plan trade packages for a construction management version of Northgate so that gaps and overlaps are caught before award.

The lesson

Where CCDC 17 fits

The Canadian Construction Documents Committee (CCDC) published three updated construction management forms in June 2025, the first revision of the suite since 2010: CCDC 5A for services, CCDC 5B for services and construction, and CCDC 17 for trade contracts. CCDC describes CCDC 17-2025 as a stipulated price contract between an Owner and a Trade Contractor, for projects delivered under the CCDC 5A method. The trade contractor gets a fixed price for its scope, whatever its actual costs turn out to be.

That pairing matters. Under CCDC 5A, which lesson 11 covers, the construction manager is a limited agent of the owner. It advises, plans, tenders and administers, but it does not build. The owner contracts directly with each trade, so the owner, not the construction manager, carries the trade contractors' credit, performance and coordination risk. Under CCDC 5B, covered in lesson 12, the construction manager holds the trade contracts itself as subcontracts, often on a CCA 1 form, so CCDC 17 is not the usual document there.

Who does what on a trade contract

Three parties touch every CCDC 17 contract, but only two sign it. The owner is the contracting party: it pays the trade, holds the holdback and has the remedies if the trade defaults. The construction manager administers the contract for the owner under its CCDC 5A duties: it runs the tender, manages the schedule, reviews progress, processes changes and coordinates the trades with each other. The Consultant stays responsible for the design and interprets the design requirements.

The split between the construction manager and the Consultant needs care. The Ontario Association of Architects' practice tip on the CM forms, written around the 2010 editions, says that under the CCDC 5A and CCDC 17 pairing the construction manager makes findings on performance of the Work except for design matters, and handles certification of trade payments, while the Consultant still takes part in certifying substantial performance. The OAA notes the 2025 forms exist, and BRC has not found a public source that sets out the 2025 split clause by clause. Read the 2025 General Conditions and your Supplementary Conditions together before you assume who certifies what, and make the Consultant's agreement match.

What changed in the 2025 edition

Law-firm commentary from Gowling WLG, Clark Wilson, BLG and Pallett Valo describes the main 2025 changes that reach CCDC 17:

• Ready-for-Takeover. CCDC 17 now uses the Ready-for-Takeover milestone from CCDC 2-2020 (GC 12.1), with Substantial Performance kept for lien and holdback purposes. Gowling reports that only trade contractors whose work affects occupancy must meet the Ready-for-Takeover prerequisites.
• Early occupancy. GC 12.2 lets the owner occupy part or all of the Work before Ready-for-Takeover, with the affected trade contractor's consent and any required approvals from authorities. The occupied part is treated as taken over.
• Prompt payment. GC 5.2 to 5.4 provide for monthly applications and payment by the owner within 28 calendar days of receipt of a proper invoice, which lines up with Ontario's Construction Act.
• Progressive holdback release. Holdback can be released progressively on completed portions of work where the law allows it.
• Limitation of liability. GC 13.2 caps uninsured liability at the greater of the Contract Price and $2 million, to a maximum of $20 million, with a mutual waiver of consequential damages except for fraud, criminal acts and wilful misconduct.
• No termination for convenience. CCDC 5A and 5B gave the owner a new right to terminate for convenience. Gowling notes that CCDC 17 did not, on the view that an owner should be committed to the project before it signs trades. Lesson 14 covers this in detail.

Dentons adds a practical point: the 2025 CCDC 17 carries early occupancy, insurance and takeover concepts that match CCDC 5A-2025. Pair the 2025 trade form with the 2025 CM form. Mixing a 2010 CCDC 17 with a 2025 CCDC 5A leaves the milestones, payment timing and liability caps out of step.

Many contracts means many holdbacks and many milestones

In Ontario, each CCDC 17 trade contract is a separate contract between the owner and a contractor under the Construction Act. That has three effects owners often miss. First, the owner keeps a 10% holdback on each trade contract and must track each one separately. Second, each trade contract has its own substantial performance or completion, and its own lien period, so an early trade such as sitework may be ready for holdback release long before the building is finished. Third, prompt payment timelines run for each trade's proper invoice, so a slow review by the construction manager is the owner's late payment. Lesson 7 explains the statutory tests and the 2026 annual holdback release, which applies to each contract entered into on or after January 1, 2026.

Packaging is the owner's design risk

Under a single stipulated price contract the general contractor closes the gaps between trades. Under CCDC 17 nobody does unless the package scopes say so. If the steel package assumes the roofing trade supplies roof-opening framing, and the roofing package assumes the opposite, the owner pays for the gap as a change. The construction manager writes the scopes, but under CCDC 5A it is an adviser, not a guarantor. The owner's protection is a scope matrix: every specification section and every interface assigned to exactly one package before tender.

Northgate worked example

Northgate Distribution Centre (fictional) is a 12,000 m² tilt-up warehouse in Vaughan for Northgate Logistics Inc. (fictional). In the real case it is design-bid-build under CCDC 2-2020 with Halvorsen Builders Ltd. (fictional); see the Northgate fact sheet. For this lesson, consider a hypothetical.

The package plan

The main reason to use CM is to start before the design is complete. Figure 2 shows how the construction manager might split Northgate into nine packages and release them in order. Sitework and foundations are awarded in February 2027 so they can start at mobilization (M3, March 1), right after the permit (M2, February 26). Tilt-up, steel, roofing and the mechanical and electrical packages follow in March and April, while design finishes. Dock equipment and office interiors go last.

The plan creates nine contracts, nine holdback ledgers and nine sets of insurance and bonding requirements for the owner to administer. It also means Northgate Logistics commits to the foundations before it knows the price of the roof.

Which trades must meet Ready-for-Takeover?

Under CCDC 17-2025, only trades whose work affects occupancy have to meet the Ready-for-Takeover prerequisites. Figure 3 shows how the owner's representative might sort Northgate's packages. Write that judgement into each package's Supplementary Conditions.

Payment in practice

Each trade submits a monthly proper invoice. The owner has 28 calendar days from receipt to pay, so the construction manager's review and any Consultant input have to fit inside that window, with time left for any notice of non-payment the Construction Act requires. With nine trades, run one payment calendar with the same submission day for all of them.

Owner's move

• Use the 2025 forms as a set. Sign trades on CCDC 17-2025 when the construction manager is on CCDC 5A-2025, so milestones, payment and liability terms line up.
• Build a scope matrix before the first tender. Assign every specification section and every interface to exactly one package, and make the construction manager responsible for keeping it current.
• Decide which trades carry Ready-for-Takeover. List them in the Supplementary Conditions of each package, with the prerequisites each must deliver.
• Write down who certifies. State in the Supplementary Conditions who reviews and certifies each trade's payment and substantial performance, and match the Consultant's and the construction manager's agreements to it.
• Run one holdback ledger per trade. Track each trade's holdback, lien period and release date separately, including the annual release for 2026 and later contracts.

Common mistakes

1. Treating the construction manager as the contractor. Under CCDC 5A it is the owner's agent. The owner holds the trade contracts and the trade risk.
2. Mixing editions. A 2010 CCDC 17 under a 2025 CCDC 5A leaves two completion milestones and two payment clocks.
3. Leaving scope gaps between packages. Every interface not assigned becomes a change order.
4. Assuming you can walk away from a trade. CCDC 17 has no termination for convenience; adding one is a Supplementary Condition the trades will price.
5. Paying late through the CM. The 28-day clock runs from the trade's invoice, not from the construction manager's recommendation.

Quick quiz

1. Under CCDC 5A-2025 with CCDC 17-2025 trade contracts, who are the parties to each trade contract?

   1. The construction manager and the trade
   2. The owner and the trade
   3. The Consultant and the trade
   4. The owner, the construction manager and the trade

2. Which trade contractors must meet the Ready-for-Takeover prerequisites under CCDC 17-2025, according to Gowling WLG?

   1. All of them
   2. Only the last trade on site
   3. Only those whose work affects occupancy
   4. None; only the construction manager

3. How long does the owner have to pay a trade contractor's proper invoice under CCDC 17-2025?

   1. 10 days
   2. 20 days
   3. 28 calendar days from receipt
   4. 28 days from the construction manager's recommendation

4. Which statement about termination for convenience is correct for the 2025 CM suite?

   1. CCDC 17 has it; CCDC 5A does not
   2. CCDC 5A and 5B have it; CCDC 17 does not
   3. All three forms have it
   4. None of the forms has it

5. On an Ontario CM project with nine CCDC 17 trade contracts, how many holdbacks does the owner track?

   1. One, on the construction manager's fee
   2. One, on the total of all trades
   3. Nine, one per trade contract
   4. None, because the construction manager holds them

Key terms

CCDC 17-2025

The CCDC stipulated price contract between an owner and a trade contractor on a construction management project, used with CCDC 5A.

Construction manager as agent

A CM, under CCDC 5A, that advises and administers for the owner but does not hold the trade contracts.

Trade package

A defined scope of work tendered and awarded as one trade contract.

Scope matrix

A table that assigns every specification section and interface to exactly one package.

Proper invoice

A payment application that meets the Construction Act's requirements and starts the owner's 28-day payment clock.

Early occupancy

The owner taking over part or all of the Work before Ready-for-Takeover, with consent and approvals, under GC 12.2.

References

1. CCDC, CCDC 17-2025 Stipulated Price Contract for Trade Contractors on Construction Management Projects (document page).
2. CCDC, CCDC 5A-2025 Construction Management Contract for Services (document page).
3. Gowling WLG, Updates to the 2025 CCDC construction management contracts (July 2025).
4. Clark Wilson LLP, Key updates to the 2025 CCDC 5A, 5B and 17 (August 2025).
5. BLG, 2025 CCDC construction contract updates (2025).
6. Pallett Valo LLP, 2025 CCDC contract updates: what construction professionals need to know (January 2026).
7. Dentons, via Legal 500, Modernization of the CCDC contracts (September 2025).
8. Ontario Association of Architects, Practice Tip PT.23.2, CCDC construction management contracts (v2.1, May 2026).

Verified on November 6, 2026.