15x15 Kitchen Floor Plans & Costs: Organizing and Renovating

A 15x15 kitchen gives you something most homeowners only dream about: 225 square feet of real room to work with. That's more than double the industry-standard 10x10 benchmark, and it opens the door to features that simply aren't possible in smaller footprints — a full-size island with seating for four, dedicated zones for cooking and dining in the same room, a pantry wall, double ovens, or a layout where two people can cook simultaneously without bumping elbows.

These kitchens are most often found in newer suburban builds, colonial and farmhouse-style homes, large condos, and houses where a previous renovation knocked out a wall between the kitchen and an adjacent room. The space is generous. The challenge is making sure it stays organized, efficient, and worth the investment — because a large kitchen that's poorly planned can feel just as frustrating as a cramped one, only more expensive.

This guide covers what it costs to renovate a 15x15 kitchen at different budget levels, how to organize a kitchen this size so it works as well on a Tuesday night as it does when you're hosting, and layout configurations that show how the same 225 square feet can serve very different lifestyles.

Preparing for the renovation costs for a 15x15 kitchen

At 225 square feet, a kitchen renovation involves significantly more material, more labor hours, and more design complexity than a standard-size project. The total square footage is roughly 125% larger than a 10x10, and costs scale accordingly — though not always linearly. Certain fixed costs (permits, appliance hookups, design fees) don't change much with room size, while variable costs (cabinetry, countertops, flooring, tile) increase proportionally or more.

Here's what homeowners can generally expect:

Basic refresh: $40,000–$60,000. Stock or semi-custom cabinetry, mid-range appliances, laminate or entry-level quartz countertops, and updated lighting. The layout stays mostly intact. This level works when the bones of the kitchen are solid — the cabinet boxes are in good shape, the plumbing and electrical don't need relocating — and you're primarily updating surfaces and fixtures.

Mid-range renovation: $60,000–$100,000. Semi-custom to custom cabinetry, quartz or natural stone countertops, a dedicated backsplash, upgraded appliances (slide-in range, counter-depth refrigerator, quiet dishwasher), and layout modifications. This is where most homeowners are renovating a kitchen this size. You might add an island, relocate the sink, improve the lighting plan, or reconfigure the work zones. Plumbing and electrical modifications at this level typically add $5,000–$12,000 depending on scope and local rates.

High-end renovation: $100,000–$150,000+. Fully custom cabinetry, professional-grade appliances, premium stone countertops (marble, quartzite), full layout reconfiguration, architectural lighting, and finish details like waterfall edges, integrated paneling, or custom range hoods. At this budget you're likely gutting the studs, potentially moving walls or adding windows, and investing in structural and mechanical upgrades that will last decades. Permit and design fees alone at this level can run $3,000–$8,000.

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Where the budget goes in a large kitchen

A 15x15 kitchen amplifies every line item. Understanding how costs distribute helps you prioritize the upgrades that matter most to your daily life.

Cabinetry: 30–35% of total budget. A 15x15 kitchen can accommodate 30–50+ linear feet of cabinetry depending on layout. At semi-custom pricing ($200–$400 per linear foot installed), that's $6,000–$20,000 for cabinets alone. Custom cabinetry pushes that to $24,000–$60,000. In a kitchen this size, cabinetry is also where organization lives — pull-out pantry shelves, deep drawer inserts, corner carousels, and built-in dividers make the difference between a kitchen that stores things and one that keeps them accessible.

Countertops: 10–15%. You may have 50–80 square feet of countertop surface, especially if you're including an island. Quartz at $50–$100 per square foot installed means $2,500–$8,000. Marble or quartzite can push that to $5,000–$12,000+. An island with an overhang for seating adds both material cost and the structural support needed to cantilever the stone without cracking.

Appliances: 12–18%. A mid-range package runs $6,000–$12,000. A professional-grade setup — 36- or 48-inch range, built-in refrigerator, panel-ready dishwasher, dedicated ventilation hood — can reach $20,000–$40,000. The 15x15 footprint is one of the few residential sizes where a 48-inch range and a full-height side-by-side refrigerator fit comfortably without dominating the room.

Labor: 25–35%. Expect $15,000–$35,000 for mid-range and $30,000–$55,000+ for high-end. The larger footprint means more demolition, more tile to lay, more cabinets to install, and longer runs for plumbing and electrical — all of which translate to more trade hours on site.

Flooring: 4–7%. You're covering roughly 140–170 square feet of visible floor (after subtracting cabinet and appliance footprints). Luxury vinyl plank at $4–$8 per square foot installed runs $560–$1,360. Hardwood at $10–$20+ brings it to $1,400–$3,400. Large-format porcelain tile — popular in kitchens this size because fewer grout lines make the floor feel more expansive — typically runs $10–$18 installed.

Island construction: 5–10%. A basic island with cabinetry and countertop starts at $4,000–$7,000. Add a prep sink ($1,500–$3,000 for plumbing), electrical outlets ($800–$1,500), and seating overhang ($500–$1,500 for countertop extension and supports), and a fully equipped island can run $8,000–$18,000. In a 15x15 kitchen, the island often becomes the most-used surface in the room — it's worth investing here.

How to organize a 15x15 kitchen so the space earns its keep

More square footage doesn't automatically mean a more organized kitchen. In fact, large kitchen layouts are some of the hardest to keep functional because the extra room tempts you to spread things out, creating long distances between related items and dead zones where things accumulate without purpose. The key is thinking in zones — and making sure every zone has the storage it needs within arm's reach.

• Build around work zones, not just the work triangle. In a kitchen this size, the classic three-point triangle between stove, sink, and refrigerator still matters, but it's no longer enough to organize the whole room. Think instead about four or five distinct zones: a cooking zone (stove, ventilation, oils, spices, pots), a prep zone (counter space, knives, cutting boards, mixing bowls), a cleaning zone (sink, dishwasher, drying rack, cleaning supplies), a storage zone (pantry, dry goods, small appliances), and a serving zone (dishes, glasses, flatware, near the dining area or island). When each zone has its own storage and counter space, the kitchen runs itself.
• Use the island as command central. In most 15x15 layouts, the island is the geographic center of the room. Organize it accordingly — prep tools and cutting boards in the drawers closest to the countertop, serving dishes in base cabinets near the seating side, and everyday items (napkins, utensils, salt and pepper) within easy reach of where people actually sit. If your island has a sink, store dish soap, sponges, and cleaning supplies directly below it so the cleaning zone doesn't split across the room.
• Keep pantry storage vertical and visible. A 15x15 kitchen has room for a full pantry cabinet, a pull-out pantry column, or even a dedicated pantry wall. Whichever format you choose, organize by frequency of use: everyday items (oils, grains, canned goods, snacks) at eye level, bulk and backup supplies on higher or lower shelves. Clear containers or labeled bins keep things visible, which is the single most effective way to prevent a large pantry from becoming a forgotten storage closet.
• Designate a landing zone near each entry. If your kitchen has two doorways — common in a room this size — create a small landing surface near each one. This is where keys, mail, bags, and school papers naturally pile up. Building that into the design (a narrow counter, a shallow shelf, or even a dedicated drop zone with hooks and a tray) keeps the mess contained instead of spreading across the island or main countertops.
• Don't let the perimeter go passive. In large kitchens, it's common for the walls furthest from the main cooking area to become underused — a long stretch of bare wall or base cabinets filled with items you never reach for. Instead, dedicate that real estate to a beverage station (coffee maker, mugs, kettle), a baking zone (stand mixer, baking sheets, flour canisters), or a tech station (charging cords, tablet stand for recipes). Give every section of wall a job, and the kitchen stays active across its full footprint.

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15x15 layout idea: L-shaped kitchen with stove on the peninsula and dining

The refrigerator, dishwasher, and sink line the upper wall, with tall cabinetry extending down the left side. The stove is positioned on a peninsula that juts out from the upper-left corner, separating the cooking zone from the rest of the room. A large dining table with seating for eight occupies the lower-right portion of the room, and a base cabinet run along the left wall adds additional storage.

This is the most complete layout in the set. It dedicates serious real estate to both cooking and dining, creates clear separation between the two zones via the peninsula, and still delivers generous storage along the upper and left walls. The peninsula stove placement keeps the cook facing the room rather than a wall.

The peninsula with a stove requires dedicated ventilation — either a ceiling-mounted hood or a downdraft system — plus gas or electrical rough-in to the peninsula location. That adds $3,000–$7,000 compared to a wall-mounted stove. But the functional payoff is significant: a defined cooking station with counter space on three sides and sightlines to the dining area and doorways.

15x15 layout idea: L-shaped kitchen with center island cooktop and dining

The dishwasher and double sink line the upper wall with cabinetry extending down both sides. The refrigerator sits on the right-hand wall. A center island houses a four-burner cooktop, positioned so the cook faces the dining table in the lower half of the room. Seating for six surrounds the table.

This layout puts the cooktop on the island rather than the perimeter — a configuration that fundamentally changes how the kitchen feels. The cook becomes part of the room rather than facing away from it, and the island cooktop creates a natural gathering point. The perimeter walls handle all the wet work (sink, dishwasher) and cold storage (fridge), keeping the infrastructure costs along existing utility lines.

The island cooktop requires running either a gas line or a dedicated 240-volt circuit to the island, plus ventilation — either an overhead hood or a pop-up downdraft system. Budget $4,000–$9,000 for the combined utility and ventilation work beyond the cooktop itself.

15x15 layout idea: L-shaped kitchen with fridge, dining, and freestanding storage

The stove, double sink, and dishwasher run along the upper wall. The refrigerator is positioned on the left-hand wall with a tall cabinet beside it. A dining table with seating for six sits in the center of the room. The lower-right area includes a freestanding piece of furniture — a buffet, sideboard, or additional base cabinet — for supplementary storage or serving.

This layout balances cooking, dining, and storage without the cost or complexity of an island cooktop or peninsula stove. The cooking zone stays along the upper wall where plumbing and electrical are most straightforward, and the dining table occupies the center of the room as the natural gathering point.

Cost-wise, this is one of the more budget-friendly configurations for a 15x15 kitchen. No island plumbing, no relocated gas lines, no ceiling-mounted ventilation. The sideboard in the lower-right corner is a furnishing expense you can add later — it doesn't need to be part of the renovation budget.

15x15 layout idea: Single-wall kitchen with island bar and large-scale dining

The dishwasher, double sink, and stove line the upper wall. The refrigerator sits on the right-hand wall. A long rectangular island with bar seating for four runs horizontally across the middle of the room, creating a visual and functional divider between the cooking perimeter and the dining zone. A large table with additional seating fills the lower portion.

The long island is the defining feature here. It acts as a buffer between the cooking zone and the dining area, and its horizontal orientation provides the longest continuous prep surface of any layout in this set — useful for meal prep, baking projects, or buffet-style serving.

The cost falls in the mid-range. The island adds cabinetry and countertop material, but since it doesn't include plumbing or a cooktop, the utility work stays simple. The main cost variables are the island's length (which determines countertop material) and whether you add electrical outlets — a useful addition that typically runs $800–$1,500.

15x15 layout idea: L-shaped kitchen with full right-wall cooking station and dining

The stove and fridge share the upper wall. The right-hand wall houses a full cooking and cleanup station — double sink, double oven, and dishwasher — with extensive cabinetry running the full 15-foot length. A dining table with seating for eight fills the center of the room, and the left-hand wall has tall cabinetry for full pantry storage.

This is the most storage-dense and appliance-heavy layout in the set. The right-hand wall essentially functions as a secondary kitchen — two banks of ovens, a dedicated sink, and a dishwasher — and the separation between the stove (upper wall) and the ovens (right wall) creates two distinct cooking zones that can operate simultaneously.

The cost reflects the ambition. Double ovens add $2,000–$6,000 over a single unit. The full 15-foot right-wall run is one of the largest single-wall installations in residential kitchen design. Plumbing for a second sink plus electrical for two oven circuits pushes the utility budget higher than any other layout here. Budget accordingly and make sure you'll use the capacity before committing.

Making 225 square feet worth the investment with Block

A large kitchen is a privilege — and a responsibility. With this much room, the difference between a renovation that works and one that doesn't usually isn't about spending more. It's about spending in the right places: a layout that fits how you actually cook and gather, an island that earns its place in the center of the room, storage that keeps things accessible rather than just hidden, and finishes that hold up to daily life.

With Block Renovation, you can visualize different layouts and see how each choice affects your budget through the free Renovation Studio. When you're ready to build, Block connects you with vetted contractors who provide detailed proposals you can compare side by side — backed by progress-based payments and a one-year workmanship warranty.

The best large kitchens aren't defined by how much they cost. They're defined by how well they fit the people who use them.

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