How much does a kitchen island countertop cost?

The island itself is priced per square foot like any counter. A mitred waterfall edge adds about CAD $48 per square foot, typically $2,000–$3,000.

How much overhang can a stone countertop have?

Up to about 10 inches unsupported. Beyond that, steel flat-bar or concealed brackets are required.

What is bookmatching?

Mirroring two slabs cut from the same block so the veining opens symmetrically across the island.

Should flooring go down before a waterfall island?

Yes. The waterfall panel lands on the finished floor.

Application

Kitchen Islands & Waterfall Edges

Where a countertop stops being a work surface and becomes furniture.

Quick answer

A kitchen island countertop with a mitred waterfall edge costs about CAD $48 per square foot more than a standard eased edge, typically $2,000–$3,000 on a normal island. Seating overhangs beyond 10 inches require steel flat-bar support.

Reviewed by Daniel Roy, Lead Fabricator (18 years) Last reviewed 2026-08-14

Ready for a countertop quote you can actually trust?

Send us your measurements or a photo. We will come back with a fixed, line-item price — no showroom visit required.

Get My Free Quote

Itemised, transparent quotes
No showroom visit required
Reply within one business day