The instinct to buy the biggest kitchen sink available is understandable. A large sink makes washing pots, soaking dishes, and rinsing vegetables easier. But this instinct, when acted on without reference to the total countertop width, produces a kitchen that is genuinely difficult to work in — a vast sink surrounded by barely enough bench space to rest a chopping board. Our lead carpenter with four decades of kitchen renovation experience has one clear piece of advice on this: ask your carpenter what size sink fits before you go shopping.

The Countertop Is a Fixed Resource

The total width of a kitchen countertop is determined by the cabinet layout and the physical dimensions of the kitchen. That width must be shared between the sink area and the food preparation area. Every centimetre gained by the sink is a centimetre lost to the work surface.

A large double-bowl stainless steel sink can run 80 to 90 cm wide. In a kitchen with 150 cm of total counter space, a 90 cm sink leaves only 60 cm for everything else — cutting, plating, resting appliances, and general preparation. In practice, 60 cm of usable preparation space is quite limiting, especially if a dish drying rack or knife block also lives on the counter.

The opposite problem also exists. A sink that is too small may leave ample counter space but frustrates daily cooking: large pots and pans do not fit comfortably, and washing becomes a careful balancing act rather than a straightforward task.

The right answer is not the biggest sink or the smallest sink. It is the sink size that allows the remaining countertop to still function effectively as a workspace.

The Correct Planning Sequence

The order in which decisions are made during a kitchen renovation matters enormously. For the sink, the correct sequence is:

Confirm the cabinet design and total countertop width first — this determines how much space is available for the sink area
Discuss your cooking habits with your carpenter — how many people cook? Do you prepare large quantities of food? Do you need a double bowl or is a single bowl sufficient?
Let your carpenter recommend a size range, then shop for a sink within that range based on your brand and style preferences

The common mistake is to reverse this order: buying a sink first, then asking the carpenter to build the cabinets around it. When this happens, the results are frequently unsatisfactory:

Oversized sink: The countertop becomes so consumed by the sink that there is insufficient preparation space
Undersized sink: Counter space is plentiful but the sink itself is inadequate for daily cooking needs
Non-standard dimensions: A sink with unusual dimensions may not align with standard countertop cutout sizes, adding complexity and cost to the installation

Common Sink Types and Their Typical Dimensions

Understanding the general size ranges for different sink types will help you frame the conversation with your contractor more precisely:

Single Bowl Sink

Typical width: 45 to 60 cm
Best for: Kitchens with limited counter space where preparation area is the priority, or smaller households with modest washing needs
Advantage: More counter space remaining after installation; simpler installation
Limitation: May feel constrained when washing large pots

Double Bowl Sink

Typical width: 75 to 90 cm
Best for: Larger households, frequent cooks, or anyone who benefits from being able to soak dishes in one bowl while rinsing in the other
Advantage: Versatile — can separate washing and rinsing tasks simultaneously
Limitation: Consumes significantly more counter width; only practical if total counter space is generous

Compact Single Bowl

Typical width: 40 cm or less
Best for: Very small kitchens with tight countertop dimensions, or secondary utility kitchens

Top Mount vs Undermount: Which Installation Method Suits Your Kitchen?

The way the sink is installed affects both the visual result and the ease of daily cleaning:

Top Mount (Drop-In) Sink

The sink rim sits on top of the countertop surface, surrounding the cutout
Installation is straightforward and compatible with most countertop materials
The seam between the sink rim and the countertop surface collects debris and moisture; it requires regular cleaning attention
The more economical option

Undermount Sink

The sink is installed beneath the countertop surface, with the stone or solid surface material forming a clean, seamless edge over the sink opening
Countertop cleaning is significantly easier — you can simply wipe debris directly into the sink without the rim being an obstacle
The visual result is cleaner and more contemporary
Requires a countertop material capable of supporting the installation: sintered stone and quartz work well; thin or unsealed materials do not
Higher installation cost, but the improved user experience is consistently appreciated

Sink Materials: What to Know

Stainless Steel

Durable, heat-resistant, and easy to clean
The most widely used sink material in the market; reasonably priced
Will show water spots and fine surface scratches over time, though these do not affect function
When choosing stainless steel, look for a gauge (thickness) of at least 0.8 mm for durability

Granite Composite

A more premium aesthetic with a wide range of colour options
More resistant to visible scratching and water spotting than stainless steel
Higher price point
Well suited to homeowners who prioritise the visual consistency of the kitchen and have budget for the upgrade

Conclusion: Sink Size Is a Layout Decision, Not Just a Product Decision

Choosing a kitchen sink might seem like a simple product purchase — walk into a showroom, pick one you like, and take it home. But in the context of a renovation, the sink size decision is inseparable from the countertop layout decision. Getting it wrong means living with an inconvenient kitchen for as long as you stay in the home.

The most practical approach: before visiting any sink showroom, sit down with your carpenter and ask, “Given my countertop dimensions and how I cook, what size sink do you recommend?” Work within the range they suggest, then choose a sink you like within that range. The result will be a kitchen where both the sink and the preparation area function as they should — because the two were planned together, not against each other.