How much does a kitchen island cost in Toronto?

There is no single answer, and that is the point of splitting it. The cabinet box runs $150 to $400 per linear foot for stock, $300 to $500 semi-custom and $500 to $800 for mid-range custom, all published by a Toronto contractor. The stone on top runs $85 to $105 per square foot for B-grade quartz and $90 to $110 for entry Carrara marble. An eight-foot island with semi-custom cabinets and a quartz top is therefore roughly $2,400 to $4,000 of cabinetry and, at around 22 square feet of top, $1,870 to $2,310 of stone before any waterfall, cut-outs or tax.

Why does a waterfall end cost so much?

Because it is not a decorative panel, it is a second and third piece of the same slab, mitred at 45 degrees so the vein carries around the corner with no visible joint. That mitre is the hardest cut in the shop, it has to be done on stone that is already cut to size with no second chance, and the panel eats slab area that would otherwise have been counter. A single side runs $900 to $1,800 on Stone Valley Countertops' published figure, so two ends can add more than the entire top did.

Is the island top priced the same as the rest of the counter?

Per square foot, usually yes, from the same slab at the same rate. What differs is that an island is a single large piece with four finished edges and no wall to hide against, so it is more likely to need a seam, more likely to expose a bad one, and much harder to carry in. A shop quoting a whole kitchen will often price the island run at the same rate and then add for access, which is a line worth asking about on a condo job.

Does this include installing the cabinets?

No, and it says so on the result. Cabinet installation labour is published at $2,000 to $6,000 per kitchen in Ontario, not per island, and cutting a whole-kitchen figure down to one island would be inventing a number rather than reporting one. If the island is the only cabinetry going in, a fitter will usually quote against a call-out minimum instead of that range, so ask for it as its own line.

How deep should a kitchen island be?

Deep enough for whatever it has to do, and every extra inch is stone you buy. A working island with no seating can be as shallow as the 25 inch counter depth it inherits. Add seating and you are adding an overhang on top of that, which is where 36 and 42 inch islands come from. The calculator asks for total depth including the overhang deliberately, because the fabricator prices the whole footprint and does not care which part of it people sit at.

Can I put a sink or a cooktop in the island?

Yes, and both are priced here as separate cut-outs because that is how a fabricator bills them. What the calculator cannot price is the plumbing and the electrical, which is where an island sink gets expensive: the drain and the supply have to come up through the floor rather than along a wall, and on a concrete condo slab that is a very different job than on a joisted floor. Ask about it before you commit to the layout, not after. Countertop Installers does not publish a figure for it because no Canadian source separates it out cleanly.

Kitchen island cost calculator: the box and the stone, priced apart

Last updated: August 28, 2026By The Slab Desk

A kitchen island is two purchases wearing one name. Every page that answers "kitchen island cost" with one number has quietly picked one of them: the cabinet box, sold by the linear foot, or the slab on top, sold by the square foot. They come from different companies and they are nowhere near the same size. This prices both and shows you the split.

Describe the island

Length (feet)This also sets the run of base cabinetry, which is billed by the linear foot.Depth (inches)Include the seating overhang. It is stone you pay for whether anyone sits at it or not.

The top

$85 to $105 per sq ft installed, as published by Stone Valley Countertops (Mississauga, GTA quartz pricing guide)

The base cabinetry

Modified sizes, better boxes and finishes.

Waterfall ends

The single most expensive optional thing you can do to an island: $900 to $1,800 a side.

Sink cut-outs in the islandCooktop cut-outs in the island

8 ft by 40 in, which is 26.7 sq ft of top, before tax

$4,817 to $7,300

$5,443 to $8,249 with 13% HST on top.

The cabinet box

$2,400 to $4,000

Roughly 53% of the island, bought from a cabinet shop.

The stone on top

$2,417 to $3,300

Roughly 47%, bought from a fabricator.

Island base cabinetry, supplied$300 to $500 per linear foot (CAD) x 8, as published by Toronto General Contractors (Toronto, Dec 2025): $2,400 to $4,000
Island top, supplied, fabricated and installed$85 to $105 per sq ft installed (CAD) x 26.7, as published by Stone Valley Countertops (Mississauga, GTA quartz pricing guide): $2,267 to $2,800
Undermount sink cut-out in the island$150 to $500 per cut-out (CAD) x 1, as published by Natural Stone City (Ontario countertop cost guide): $150 to $500
13% HST: $626 to $949

One line is missing on purpose: fitting the cabinets

Professional cabinet installation is published at $2,000 to $6,000 per KITCHEN by Alliance Millwork (Vaughan / GTA, Feb 2026), not per island. There is no honest way to cut a whole-kitchen labour figure down to one island, so rather than invent a fraction of it, this leaves it out and tells you it is out. If the island is the only cabinetry going in, expect a fitter to quote against a minimum rather than against that range.

An island also needs a floor that can hold it, and a power feed if anything plugs in on it. A stone top with two waterfall ends puts several hundred kilograms onto a footprint the size of a dining table, which is a conversation with whoever is doing the framing rather than with the fabricator.

Reading an island quote

The cabinet half is billed by the linear foot of run, which for an island is its length. Three tiers are published for the GTA by Toronto General Contractors (Toronto, Dec 2025): stock boxes at $150 to $400, semi-custom at $300 to $500, and mid-range custom at $500 to $800. Those are cabinetry only, supplied.

The stone half is billed by the square foot of the island's footprint, at the same rate the fabricator would charge for the perimeter counters. The four material rates here come from four different guides, which is deliberate: quartz from a brand table, granite from a Toronto contractor, porcelain and marble from GTA fabricators. They were not normalised against each other, so read each as that company's advertised range rather than as a market rate.

Waterfall panels are the line worth understanding before you agree to one. A waterfall is a mitred 45 degree joint that carries the vein around the corner with no visible seam, cut on stone that is already sized with no second chance, and the panel consumes slab that would otherwise have been counter. At $900 to $1,800 a side, two ends on a small island can cost more than the entire top. Two Canadian sources disagreed on the range and it was widened rather than split.

Three things sit outside this estimate and all three are real. Fitting the cabinets, as above. Plumbing and electrical for an island sink or cooktop, where services have to come up through the floor rather than along a wall, which is a very different job on a concrete condo slab than on joists. And getting the slab into the room at all, which on a downtown job is a line item rather than an afterthought. Collected August 2026.

Sources

Toronto General Contractors (Toronto, Dec 2025) - Stock / box-store cabinets (IKEA, Home Depot, Costco), cabinetry only: $150 to $400 per linear foot (CAD)
Toronto General Contractors (Toronto, Dec 2025) - Semi-custom cabinets (modified sizes, better boxes and finishes): $300 to $500 per linear foot (CAD)
Toronto General Contractors (Toronto, Dec 2025) - Mid-range custom cabinets (custom sizing, plywood boxes, soft-close standard): $500 to $800 per linear foot (CAD)
Stone Valley Countertops (Mississauga, GTA quartz pricing guide) - B-grade quartz, fabricated and installed: $85 to $105 per sq ft installed (CAD)
Tec Corp Stone (Toronto, Level 1-3 guide, January 2026) - Level 2 granite, installed (wider colour choice, more visible movement): $75 to $110 per sq ft installed (CAD)
TecCorp Stone, Kitchen Countertop Cost in Toronto (2026) - Porcelain / sintered stone countertop, installed (Toronto and GTA planning range): $90 to $160 per sq ft installed (CAD, before HST)
Better Marble (North York showroom, June 2025 Toronto price guide) - Carrara marble countertop, installed (entry level, GTA): $90 to $110 per sq ft installed (CAD)
Stone Valley Countertops (Mississauga, GTA pricing guide) - Mitred waterfall panel, per island side: $900 to $1,800 per waterfall panel (CAD)
Natural Stone City (Ontario countertop cost guide) - Undermount sink cut-out (Ontario): $150 to $500 per cut-out (CAD)
Stone Valley Countertops (Mississauga, GTA pricing guide) - Cooktop cut-out (GTA fabricator): $250 to $450 per cut-out (CAD)
Alliance Millwork (Vaughan / GTA, Feb 2026) - Cabinet installation labour, professional install of a kitchen's cabinets: $2,000 to $6,000 per kitchen, Ontario (CAD)

Frequently asked questions

How much does a kitchen island cost in Toronto?: There is no single answer, and that is the point of splitting it. The cabinet box runs $150 to $400 per linear foot for stock, $300 to $500 semi-custom and $500 to $800 for mid-range custom, all published by a Toronto contractor. The stone on top runs $85 to $105 per square foot for B-grade quartz and $90 to $110 for entry Carrara marble. An eight-foot island with semi-custom cabinets and a quartz top is therefore roughly $2,400 to $4,000 of cabinetry and, at around 22 square feet of top, $1,870 to $2,310 of stone before any waterfall, cut-outs or tax.
Why does a waterfall end cost so much?: Because it is not a decorative panel, it is a second and third piece of the same slab, mitred at 45 degrees so the vein carries around the corner with no visible joint. That mitre is the hardest cut in the shop, it has to be done on stone that is already cut to size with no second chance, and the panel eats slab area that would otherwise have been counter. A single side runs $900 to $1,800 on Stone Valley Countertops' published figure, so two ends can add more than the entire top did.
Is the island top priced the same as the rest of the counter?: Per square foot, usually yes, from the same slab at the same rate. What differs is that an island is a single large piece with four finished edges and no wall to hide against, so it is more likely to need a seam, more likely to expose a bad one, and much harder to carry in. A shop quoting a whole kitchen will often price the island run at the same rate and then add for access, which is a line worth asking about on a condo job.
Does this include installing the cabinets?: No, and it says so on the result. Cabinet installation labour is published at $2,000 to $6,000 per kitchen in Ontario, not per island, and cutting a whole-kitchen figure down to one island would be inventing a number rather than reporting one. If the island is the only cabinetry going in, a fitter will usually quote against a call-out minimum instead of that range, so ask for it as its own line.
How deep should a kitchen island be?: Deep enough for whatever it has to do, and every extra inch is stone you buy. A working island with no seating can be as shallow as the 25 inch counter depth it inherits. Add seating and you are adding an overhang on top of that, which is where 36 and 42 inch islands come from. The calculator asks for total depth including the overhang deliberately, because the fabricator prices the whole footprint and does not care which part of it people sit at.
Can I put a sink or a cooktop in the island?: Yes, and both are priced here as separate cut-outs because that is how a fabricator bills them. What the calculator cannot price is the plumbing and the electrical, which is where an island sink gets expensive: the drain and the supply have to come up through the floor rather than along a wall, and on a concrete condo slab that is a very different job than on a joisted floor. Ask about it before you commit to the layout, not after. Countertop Installers does not publish a figure for it because no Canadian source separates it out cleanly.