Mechanic's Lien
Learn about mechanic’s liens in Canadian real estate — what they are, how they work, and how they protect contractors and suppliers.
August 08, 2025
What is a Mechanic's Lien?
A mechanic’s lien is a legal claim by a contractor, subcontractor, or supplier for unpaid work or materials provided for a property.
Why Mechanic's Liens Matter in Real Estate
In Canadian construction and real estate, mechanic’s liens secure payment for work performed and can delay property sales or financing.
Key points:
- Filed in the land registry by unpaid construction professionals
- Creates an encumbrance on property title
- Must be resolved before transferring clear title
Understanding mechanic’s liens helps property owners, buyers, and lenders manage financial risk.
Example of a Mechanic's Lien in Action
The contractor filed a mechanic’s lien after not being paid for renovations to the building.
Key Takeaways
- Legal claim for unpaid construction work or materials
- Filed in the land registry and clouds title
- Must be cleared before property sale or refinancing
- Protects contractors and suppliers from non-payment
- Requires owners to verify payments to avoid liens
Related Terms
- Lien
- Holdback (Construction Financing)
- Encumbrance
- Title Insurance
- Draw Schedule


Canada residential unit sales by month, actual, 2019 and 2024-2026. Data through June 2026. Source:
Canada residential sales-to-new-listings ratio, actual, January 2025 to June 2026. Source:
Canada residential months of inventory, actual, January 2025 to June 2026. Source: Source:
Year-over-year change in residential average sale price for Canada, Ontario, British Columbia and Alberta, January 2022 to June 2026. Average price is shown here as a regional mix measure, not a substitute for HPI or local comparable sales. Source:
Year-over-year change in residential unit sales for Canada, Ontario, British Columbia and Alberta, January 2024 to June 2026. Source: 






15284-15296 Fleetwood Drive in Surrey. (Flat Architecture, 1098261 BC Ltd.)
Renderings of the tower proposed for 15284-15296 Fleetwood Drive in Surrey. (Flat Architecture, 1098261 BC Ltd.)

Goldberg Group 
10-storey apartment building currently occupying 525 Eglinton Avenue East/WND Associates
Rendering of 525 Eglinton Avenue East/Wallman Architects
The Mayfair West site and its surrounding context. (Grosvenor, Arcadis, Hariri Pontarini Architects)
Renderings of Mayfair West. (Grosvenor, Arcadis, Hariri Pontarini Architects)
