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

OCA Summer Hours

Please note the OCA is officially working on summer hours. The office will be open from 8:00 a.m. - 4:00 p.m. Monday - Thursday and from 8:00 a.m. to 3:00 p.m. on Friday's from May 30, 2025 to August 29, 2025.

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OCA Construction Comment Magazine - June issue

OCA Construction Comment Magazine - June issue Construction Comment is the official publication of the Ottawa Construction Association that is digitally distributed to key decision makers and purchasers in eastern Ontario’s construction industry.

Read the June issue
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Publish your next CSP image – Title Publish your Certificates with OCA!

Publish your Certificates with OCA! Link2Build is 100% Canadian owned, operated and based. Every dollar you spend stays in Canada, supporting a Canadian business and Canadian jobs. 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 Certificate with OCA
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Need to schedule Commissioner of Oath services?

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 (8:00am - 4:00pm) stephanie@oca.ca, kaitlyn@oca.ca alex@oca.ca or mjroy@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.

Commissioner of Oaths - Statutory Declarations
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Looking for a location to host your next meeting?

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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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

Name: Lansdowne 2.0 – Event Centre, North Side Stands and Public Realm
Enhancements
Project Number: 2025-007990

Address: 1015 Bank Street, Ottawa ON, KIS 3W7 & 945 Bank Street, Ottawa ON, KIS 3W7

Closing Date: Wednesday, July 23 2025, 3:00 PM EST

See all project opportunities

Latest News/Press releasesSee all news/press Releases

March 24, 2025

OCA Elects Ken Crawford 2025 Chair

The Ottawa Construction Association is pleased to announce that the members of its Board of Directors have elected Ken Crawford, President of C&M Electric as its 2025 Chair.

March 24, 2025

2024 OCA AGM Report

See all upcoming courses

  • Upcoming courses

    22 July 2025
    From $315.00 excl. Tax

    Online Bluebeam 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

    23 July 2025
    From $300.00 excl. Tax

    Field Scheduling 101

    Who does what when in the field?

    Online