This article appeared in its original form in the December 18, 2025 edition of the OAA News and continues to be updated with new information.
Following a 2024 review, significant amendments to the Construction Act and its associated regulations were brought about via Bill 216, the Building Ontario for You Act and by Bill 60, Fighting Delays, Buiding Faster Act and came into force on January 1, 2026. The amendments introduced:
- mandatory annual release of holdback;
- broadened access to adjudication;
- deemed lien for supply of design services where an “improvement” is not yet started;
- invoices becoming deemed proper invoices; and
- changes to definitions of proper (versus improper) invoices and price (versus contract price).
To read the OAA’s statement on Bill 60, click here.
Impacts on the Design and Construction Industry: Consult Legal Counsel
OAA Practices, design professionals, clients and construction teams should meet with their legal counsel to assess impacts on both professional services contracts currently in place, as well as construction delivery contracts.
Updates to OAA Resources
The Association is working to update guidance documents and resources pertaining to the Construction Act, including the Practice Tip 10 Series, as well as the OAA Contract Suite 2021 and associated guides, to reflect the legislative changes.
With the support of legal counsel, the following resources are being updated:
- Practice Tip PT.10.0, Construction Act / Construction Lien Act;
- Practice Tip PT.10.2, Construction Act– Procedures for the Release of Statutory Lien Holdbacks;
- Practice Tip PT.10.3, Construction Act–Prompt Payment;
- Practice Tip PT.10.4, Construction Act–OAA Members Acting as Adjudicators; and
- Practice Tip PT. 10.5, Construction Act–Interim Adjudication.
The OAA and the Ontario General Contractors Association (OGCA) jointly issued an updated version of the OAA-OGCA Take-Over Procedures document. This updated resource is also known as “Document 100-2026.”
Members are encouraged to check back regularly for additional updates as they become available.
Other Third-Party Resources
Various groups are offering resources that explore the new Construction Act. These are shared below for informational purposes and may not necessarily reflect the views of the OAA or its governing Council.
Webinars
In-person and virtual learning opportunities like webinars related to the new Construction Act may be eligible for Structured Learning hours under the OAA's Continuing Education (ConEd) Program. To see a list of currently available opportunities, click here.
As part of the OAA Continuing Education (ConEd) Webinar Series,
experts from Glaholt Bowles hosted a January 2026 session that examined
aspects of the Act. You can watch it on the Association's YouTube channel.
Other webinars that you can watch on-demand include:
"Amendments to Ontario's Construction Act" (Osler)
"Construction Act Amendments: What You Need To Know Now" (McMillan LP)
Articles
Many construction law firms are authoring pieces that explore the changes brought about by the Construction Act. Click the links below to be brought to external sites to learn more:
“Ontario Passes Amendments to Construction Act Following Independent Review” (McMillan LLP) November 12, 2024
“Holdback Release Decoupled from Lien Expiry: What Bill 60 Means for Industry Stakeholders” (Glaholt Bowles LLP) December 2, 2025
“Ontario announces January 1, 2026, effective date for Construction Act changes” (Gowling WLG) December 4, 2025
“New Year, New Rules: Ontario’s Construction Act Amendments Are Here!” (McMillan LLP) December 9, 2025
“Ontario’s Bill 60: Key Changes to the Construction Act Arriving in 2026” (Aird & Berlis LLP) December 9, 2025
Ontario Scraps Annual Expiration of Lien Rights (Torkin Manes LLP) December 9, 2025
“Bill 60 Becomes Law: Updated on Fighting Delays, Building Faster Act, 2025” (McMillan LLP) December 10, 2025
"Major Amendments to Ontario's Construction Act Coming Jan 1: What Industry Stakeholders Need to Know" (Glaholt Bowles LLP) December 17, 2025
"Ontario's Amendments to the Construction Act Takes Effect January 1, 2026" (Fasken) December 18, 2025
"Construction Act Changes in Ontario are (Finally) Here: Annual Holdback Release and How Will it Impact Your Project" (Norton Rose Fulbright) December 30, 2025
"Welcome to 2026: Critical Amendments to Ontario’s Construction Act Have Arrived" (DLA Piper) January 6, 2026
"Changes to Ontario’s Construction Act Effective January 1, 2026" (BLG) January 7, 2026
"Ontario's Construction Act" (Beale & Co.) January 23, 2026
"Construction Act Makeover, Continued" (Norton Rose Fulbright) January 23, 2026
"Amendments to Ontario's Construction Act Now in Force" (Blakes) January 23, 2026
"Ontario’s Construction Act Amendments Now in Force: Key Changes to the Annual Holdback Regime and Related Updates" (Dentons) February 17, 2026
"Updates to Prompt Payment Legislation in Ontario, British Columbia, and Alberta" (Bennett Jones) February 20, 2026
"Ontario Construction Act Amendments Now in Effect" (Osler) March 2, 2026
"Adjudication in Ontario: Striking the Right Balance Between Process and Substance" (Beale & Co) April 20, 2026
"Recent Amendments to the Construction Act: A Guide for Design Professionals and their Insurers" (Singleton Urquhart Reynolds Vogel LLP ) June 2, 2026
"The Facts, the Facts and the Facts: An Analysis of the Construction Act’s Transition Provisions" (Dentons) August 6, 2026