Look at their past projects. Photos of interlock, patios and gardens they’ve actually built tell you more than any promise.
Know what a seasonal contract includes. Number of cuts, cleanups, fertilizing and snow removal vary a lot. Compare line by line.
Ask about hardscape warranties. Patios and interlock can shift. Ask how long they stand behind the base and installation.
Locates before digging. Before any digging, underground utilities should be located through Ontario One Call. It’s free, and a good landscaper handles it.