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A Quick Guide to Mechanic's Lien Rights in Canada

Kristin Alford February 25, 2026

Mechanics Lien Mechanic's Liens & Bond Claims Preliminary Notices & Construction Credit

A Quick Guide to Mechanic's Lien Rights in Canada

Key Aspects and Process Steps

Overview of mechanic’s lien rights across all 10 provinces and 3 territories in Canada
Explanation of project types: Private vs. Provincial Crown vs. Federal Crown
Provincial law differences, including Quebec’s required preliminary notice
Suit deadlines and enforcement requirements after filing

Process Steps

Determine project type and confirm lien eligibility.
Verify provincial requirements, including notice obligations.
File the lien within statutory time limits.
Discharge the lien properly once payment is resolved.

Let’s Talk Mechanic’s Lien Rights in Canada

Over the last few years, several provinces in Canada have modernized or proposed amendments to their mechanic’s lien laws. Notably, Ontario paved the way for longer lien deadlines and prompt pay statutes, with its changes in 2018. Like lien rights in the U.S., each of Canada’s provinces has its own statute, which dictates when/if a notice should be served, when a lien should be recorded, and when a suit action must be initiated. So, let’s travel north and review the steps for securing mechanic’s lien rights in Canada.

Project Types: Private, Provincial Crown, Federal Crown

Although today’s post is primarily about mechanic’s lien rights in Canada, it’s worth noting that projects in Canada will fall into one of three categories:

Private: improvement contracted by a private entity, e.g., a person, company, or corporation
Provincial Crown: improvement of public works or building under formal contract made by Provincial government
Federal Crown: a contract for construction, alteration, or repair of any public building or public work of the Canadian government

Provincial and Federal Crown projects are generally not lienable, and any remedy available to claimants will likely be under a Labour & Material Bond. The Labour & Material Bond is a surety bond issued as assurance of payment to certain parties should the principal of the bond breach their construction contract.

10 Provinces, 3 Territories, 1 Requires a Preliminary Notice

Canada is comprised of 10 provinces: Alberta, British Columbia, Manitoba, New Brunswick, Newfoundland / Labrador, Nova Scotia, Ontario, Prince Edward Island, Quebec, Saskatchewan, and 3 territories: Northwest Territories, Nunavut and Yukon. Only one requires a preliminary notice to preserve mechanic’s lien rights: Quebec.

For those familiar with securing lien rights in the U.S., it may seem odd to not have a preliminary notice requirement. After all, most states require a preliminary notice and NCS’ research shows 97% of the time serving a notice will prompt payment, reducing the likelihood of a mechanic’s lien.

Preliminary Notice Provincinal Laws

Though most Canadian provinces do not have preliminary notice requirements, you could serve a non-statutory notice. This gently worded notice alerts parties on the ladder of supply that you are (or will be) furnishing to the project.

Is 1 the loneliest number? If you are furnishing to a project in Quebec, you should serve notice (Declaration of Contract) upon the owner prior to furnishing or prior to the fabrication of specially fabricated materials. The lien (aka legal hypothec), when later filed, will be limited to the materials or services provided after the notice has been served.

I did say only 1 province has a notice requirement, and while that is technically the case, both Ontario and Nova Scotia provide claimants an opportunity to serve a written request upon the owner, prime contractor, or subcontractor for project information and a copy of any payment bond.

Notice of Lien

Also, Ontario, Prince Edward Island, and Saskatchewan have a Notice of Lien which may be served upon the payer (the owner, prime contractor, and subcontractor), requiring them to retain, in addition to the holdback, an amount sufficient to satisfy a lien.

Monitor Strict Deadlines and Time Limits

When you review the chart below, you may notice two things right away: the lien deadlines are often calculated from your last furnishing, and the deadlines happen quite quickly. In the U.S., we frequently see lien deadlines within 90-120 days from last furnishing (even 8 months in New York!). The same is not true for Canada, where lien deadlines are generally within 30-60 days from last furnishing.

Canadian Mechanic's Lien Timeline

The National Lien Digest provides greater detail, but here are the general lien deadlines for all 13 provinces/territories:

Province	Notice	Mechanic's Lien	Suit
Alberta	Non-statutory notice recommended *May serve notice for tenant improvements	Within 60 days from last furnishing	Within 180 days from filing lien
British Columbia	Non-statutory notice recommended	Within 45 days from certificate of completion or completion	Within 1 year from filing lien
Manitoba	Non-statutory notice recommended	Within 40 days from last furnishing	Within 2 years from filing lien
New Brunswick	Non-statutory notice recommended *May serve notice for tenant improvements	Within 60 days from last furnishing (materials & services) Within 30 days from last furnishing (services only)	Within 90 days from filing lien or expiry of credit period
Newfoundland / Labrador	Non-statutory notice recommended *May serve notice for tenant improvements	Within 30 days from last furnishing	Within 90 days from last furnishing
Northwest Territories	Non-statutory notice recommended	Within 45 days from last furnishing	Within 45 days from lien deadline or within 90 days from expiry of credit period
Nova Scotia	Non-statutory notice recommended	Within 60 days from last furnishing	Within 90 days from last furnishing (105 days if expiry of credit period is stated within lien)
Nunavut	Non-statutory notice recommended	Within 45 days from last furnishing	Within 45 days from lien deadline or within 90 days from expiry of credit period
Ontario	Optional (Written Request)	Within 60 days from last furnishing	Within 90 days from the lien deadline
Prince Edward Island	Non-statutory notice recommended *May serve notice for tenant improvements	Within 60 days from last furnishing	Within 90 days from filing lien
Quebec	Serve prior to furnishing or prior to special fabrication	Within 30 days from date work was completed	Within 6 months form date work was completed
Saskatchewan	Non-statutory notice recommended *May serve notice for tenant improvements	Within 40 days from certificate of substantial performance or completion	Trial must be set within 2 years from filing suit
Yukon Territory	Non-statutory notice recommended	Within 30 days from last furnishing	Within 90 days from last furnishing

Earlier I mentioned Ontario recently modernized their mechanic’s lien statute. Part of the modernization included the implementation of a longer lien filing period, giving would be claimants an additional 15 days to file their liens. (Lien deadline used to be 45 days from last furnishing.)

Advice on How to File a Mechanic’s Lien

Because deadlines are short, carefully track your deadlines, monitor open invoices, and maintain an open line of communication with your customer.

If you have questions about securing lien rights in Canada or need assistance with filing a lien, please contact us! In addition to our network of attorneys in the U.S., NCS has a well-established network of attorneys in Canada who are prepared to assist with your claim.

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