What can I claim against a contractor in small claims court?
You can claim: (1) cost to fix defective work, (2) value of work not completed, (3) materials you paid for but didn't receive, (4) delay damages if the contract had a completion date, and (5) related out-of-pocket costs like temporary accommodation.
Can a contractor sue me if I withhold payment for defective work?
Yes. If you withhold payment, the contractor can sue you for the remaining contract amount. You can then counterclaim for defective work. Courts will set off the competing claims.
Do I need a construction lien before suing?
A construction lien (under provincial Construction Act / Builders Lien Act) is different from a small claims action. Liens attach to the property; small claims is a personal claim against the contractor. You can pursue both, but lien deadlines are strict — often 45–60 days after last work performed.