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Kitchen Design for a Custom Home: The Five Layouts, the Five Styles, and the Decisions That Have to Be Made Before the Permit
Plans and design Kitchen From a builder
Kitchen Design for a Custom Home: The Five Layouts, the Five Styles, and the Decisions That Have to Be Made Before the Permit
The kitchen is the room that sells the house, breaks the budget and generates the change orders. It is also the one room where the decisions have an order, and the order is not the one the showroom uses. Layout before style, rough-in before finishes, and the island before anything.
Short version: Decide the layout first: a galley for a narrow plan, an L with an island for most open plans, a U for serious cooks, a peninsula where there is no room for an island, a single wall with an island in a loft or cottage. Keep the sink, range and fridge in a loose triangle with 4 to 9 feet between them, 42 inches of aisle (48 with two cooks), 36 inches of landing counter beside the range and fridge, and the dishwasher next to the sink. Then style: shaker is the one that keeps selling, contemporary flat-panel for modern plans, farmhouse and transitional for most Ontario custom homes, traditional for the people who want it. Before the permit: the plan, the window and door positions, the island size, the range location (gas line or 40 amp circuit) and the hood vent route. Before the rough-in: every appliance model. A custom kitchen in 2026 runs $40,000 to $120,000 with cabinets about half.
The five layouts
| Layout | Best for | Watch for |
|---|---|---|
| Galley (two parallel runs) | Narrow plans, cottages, efficient cooks | Traffic through the middle; needs 48 in between runs |
| L-shape | Open plans; the counter wraps two walls and the room opens to the family room | Corner cabinets waste space; use a lazy susan or a blind-corner pull-out |
| L with island | The default in a custom house; prep on the island, sink or cooktop on it if plumbing and venting allow | Island needs 42 in of aisle all round; 48 where two people pass or a dishwasher opens |
| U-shape | Serious cooks; the most counter and storage per square foot | Can feel closed; open one leg as a peninsula or leave the fourth side to the room |
| Single wall with island | Lofts, cottages, small plans | Everything on one wall is a long walk; the island does the work |
Rules of thumb the Code does not set but every good kitchen follows: the sink-range-fridge triangle totals 12 to 26 feet with no leg under 4 or over 9; 36 inches of counter on at least one side of the range and the fridge; 24 inches on one side of the sink and 18 on the other; the dishwasher within 36 inches of the sink; a 36-inch clear path from the garage or the mudroom to the fridge for groceries. Choosing house plans starts with that path.
The island
Decide the island first because it sets the room. A working island is at least 24 inches deep plus a 12-inch seating overhang, 6 to 10 feet long, with 42 inches of aisle on every side. Put the prep sink or the cooktop in it only if you accept a plumbing stack in the floor (plan it before the basement slab is poured) and a ceiling hood or a downdraft; most families are happier with a clear island, the range on the wall and a proper hood over it. Outlets on the island are required by the Electrical Safety Code; pop-ups and end-panel receptacles keep them out of sight. Lighting and outlet planning puts three pendants over it.
The five styles that keep selling
| Style | What it looks like | Where it fits |
|---|---|---|
| Shaker | Flat recessed panel doors, simple rails, painted or stained, plain hardware | Everywhere; the style that has not dated in 150 years |
| Contemporary | Flat slab doors, handleless or linear pulls, lacquer or laminate, horizontal grain | Modern plans, lofts, big glass |
| Farmhouse | Shaker doors, apron sink, open shelves, wood tones with painted islands | Rural lots, cottages, most of our custom houses |
| Transitional | Shaker bones with cleaner lines and mixed materials | The safe answer for resale |
| Traditional | Raised panels, mouldings, glazed finishes, furniture details | Formal houses; costs the most in millwork |
Style is paint and door profile on the same boxes; the layout and the box quality are what you live with. Choosing kitchen cabinets covers boxes, doors and hardware; kitchen countertops covers the surface.
What has to be decided when
- Before the permit: the plan and the layout, window and door positions, the island footprint, where the range goes (gas line or a 40 to 50 amp circuit), where the hood vents outside (a duct through an ICF wall is a sleeve set before the pour), the fridge width, and whether the basement needs a stack for an island sink.
- Before the rough-in: every appliance make and model, because the electrician and plumber rough in to the spec sheets; the cabinet layout drawing, so outlets land above the counter and not behind the fridge; under-cabinet lighting wire.
- Before the drywall: blocking for the hood, the upper cabinets and the floating shelves. The before-drywall checklist.
- Before the cabinets are ordered: door style, colour, hardware, counter material, backsplash, sink and faucet.
- After the cabinets are in: the counter template, then nothing else changes.
What a kitchen costs in 2026
A custom kitchen in a new Ontario house runs $40,000 to $120,000 and up: cabinets 40 to 55 percent, counters 10 to 20, appliances 15 to 30, plumbing and electrical rough-in and fixtures, lighting, backsplash and hood the rest. The allowance in a builder’s contract is the line most likely to be blown; a $25,000 kitchen allowance is a laminate-and-stock-cabinet kitchen, and the showroom will not tell you that. The real cost of upgrades and designing to a target budget are the honest conversation; the selections schedule is the calendar.
Related guides on this site
Sources and further reading
Questions people ask
What kitchen layout works best for a family?
An L-shaped kitchen with an island in an open plan, for most houses: prep and seating on the island, the range on the wall under a proper hood, 42-inch aisles, and a straight path from the mudroom to the fridge. A U-shape for serious cooks; a galley for a narrow plan.
What kitchen decisions have to be made before the building permit?
The layout, window and door positions, the island footprint, the range location and fuel, where the hood vents outside, the fridge width, and any plumbing stack for an island sink that has to go under the basement slab.
How much of the kitchen budget is cabinets?
About 40 to 55 percent. Counters take 10 to 20, appliances 15 to 30, and the rest is plumbing, electrical, lighting, backsplash and the hood. A custom kitchen in a new Ontario house runs $40,000 to $120,000 in 2026.
What kitchen style holds its value?
Shaker and transitional: simple doors, quiet colours, good hardware. Contemporary flat-panel suits modern houses; traditional raised-panel costs the most and dates fastest.
Have a plan already?
Send it to ICFhome.ca and we will tell you what it costs to build and where the drawing is spending money you may not want to spend.
Reviewed and updated October 2026. Costs are Ontario ranges, not quotes; code references are to the Ontario Building Code in force at that date.
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