How to certify a construction lien action (Form 10) — and autofill cla-10 with my-id.ca
Certify that a lien action has commenced without retyping claimant and court details
Lien claimants certifying that an action to enforce a lien has been commenced repeat their business name, project address, court file number, and defendant identities on every Construction Act Form 10 certificate. This guide is an example of storing them once in my-id.ca.
Official form and source
Start from the official source and always use the current version — form numbers and links can change:
- Service page: Construction Act — ontario.ca
- Form (Central Forms Repository): Form 10 - Certificate of Action Under Section 36 of the Act Construction Lien Act — cla-10
What this form is about
Form cla-10 is Form 10 — Certificate of Action under section 36 of the Construction Act, certifying that a lien claimant has commenced an action to enforce a preserved lien — confirm timing and registration rules on ontario.ca.
Before you start: what to gather
- Claimant's legal name and business address.
- Court name, action number, and date action commenced.
- Premises or project address subject to the lien.
- Defendant names as named in the action.
Confirm the current process on ontario.ca.
How my-id.ca makes it faster
- Save it once. Store your claimant and defendant names, addresses, and court file references in your my-id.ca profile.
- Keep documents ready. Upload supporting documents to my-id.ca Files so you are not searching at form time.
- Autofill the form. Use the my-id.ca Chrome extension on a web form, or fill a PDF from your saved profile inside my-id.ca.
- Review and submit yourself through the official channel.
Why do it in my-id.ca
Related Ontario forms repeat the same personal details. Captured once in my-id.ca — stored in Canada, with AI on its own servers — every form starts mostly complete.
Frequently asked questions
- When must Form 10 be filed?
- Confirm certificate timing relative to lien preservation on ontario.ca.
- How does my-id.ca help?
- It autofills business names and project addresses across Construction Act forms.
- Does Form 10 replace preserving the lien?
- No — confirm preservation and perfection steps separately.
Fill it once. Reuse it everywhere.
Save your information in my-id.ca once, then autofill this form and the next one — web forms with the Chrome extension, PDFs right in the app. Your data is stored in Canada and AI runs on my-id.ca's own servers, never sent to third-party AI providers.