Ottawa Construction Association

Founded in 1889, the Ottawa Construction Association is one of the largest regional construction associations in Canada with more than 1,100 firms active in all sectors of the region's $5-billion construction market. The OCA serves its members in four major ways –Construction Project Information, Education, Networking and Advocacy.

Learn more about the OCA

Need to schedule Commissioner of Oath services?

This is a free service for OCA Members. Contact one of the commissioners by email during business hours (8:30am - 4:00pm) stephanie@oca.ca, mjroy@oca.ca or kathy@oca.ca Please call ahead for in person service.
Non-members would need to purchase Virtual Witnessing at $17.70 + HST for each document witnessed.

Schedule a Virtual Witness
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Looking for a location to host your next meeting?

Meeting room rentals are for sessions which do not involve an admission or training fee. If you would like to rent a room to conduct training or any type of event for which a fee will be charged, please contact the Ottawa Construction Association directly at: oca@oca.ca and provide us with the details of the event.

Meeting Room Rentals
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Publish your Certificates with OCA!

Construction purchasers, owners’ representatives and prime contractors can publish Ontario legal notices on Link2Build.ca including; Certificates of Substantial Performance, Notices of Non-Payment of Holdback, Notices of Termination, Certificates of Completion of Subcontract, Notices of Intention to Register a Condominium Link2Build charges a flat fee of just $199 per notice.

Publish your Certificates
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OCA Membership

Membership in OCA is your investment to growing your business! Explore our website to learn more about accessing thousands of bid opportunities, marketing your firm’s services or products, growing your business network, professional development opportunities in OCA’s Education program or the numerous cost saving OCA Affinity programs.

Discover Member Services
Membership Pricing
Become a Member
Member Affinity Program

Highlighted Project

MacOdrum Library – ML 345 Data Centre Expansion
1125 Colonel By Drive , Ottawa ON,
Closing Date: Tuesday, Oct. 26, 2021 at 3:00PM
Ottawa, Ontario

See all upcoming projects

Latest News/Press releasesSee all news/press Releases

June 28, 2021

Dealing with Price Volatility & Supply Chain Issues

Watch the recording of Link2Build Webinar of June 10th, 2021

March 12, 2021

OCA Elects Ray Shannon 2021 Chair

The Ottawa Construction Association is pleased to announce that the members of its Board of Directors have elected Ray Shannon of BrokerLink as its 2021 Chair.

See all upcoming courses

  • Upcoming courses

    28 October 2021
    From $260.00 excl. Tax

    CST: Human Resource Practices

    This course will be held virtually, in a morning and afternoon session.

    Ottawa Construction Association

    28 October 2021
    From $300.00 excl. Tax

    Online Bluebeam Certified Training: Revu Basics

    This two-day instructor-led series will provide you with the knowledge and skills to create, edit, markup, and collaborate on AEC documents using Bluebeam Revu.

    Online