Ask ten people whether a single or double bowl kitchen sink is "better" and you'll get ten confident answers, mostly based on whatever they grew up with. In truth, neither wins outright — the right choice comes down to how you actually cook and clean up. Here are the real trade-offs.
Start with your dishwashing reality
This is the single most useful question in the whole decision: what percentage of your dishes go through a dishwasher?
If the dishwasher handles almost everything, the sink's real jobs are rinsing, washing produce, filling pots, and scrubbing the items that never go in the machine — stockpots, roasting pans, sheet pans, cast iron. Every one of those tasks is easier in one big, uninterrupted basin.
If your household handwashes daily — no dishwasher, lots of cookware, or a habit of washing as you go — a second bowl earns its keep. A dedicated wash side and rinse side is a genuinely efficient workflow, and it's why double bowls dominated Canadian kitchens for decades.
The case for a single bowl
There's a reason most new builds and renovations now default to a large single bowl, and it isn't just fashion.
- Big items fit flat. A roasting pan or baking sheet lies down in the basin and soaks properly instead of leaning against a divider, dripping onto the counter.
- Stockpots fill and empty easily. A large pot goes fully under the faucet and tips out without being wrestled over a centre wall.
- More usable width in the same cabinet. A divider eats real space; two cramped bowls often feel smaller than one generous basin in the same footprint.
- One basin to clean. Fewer corners, no divider top collecting grime, one strainer.
The modern workaround for "but where does the drying rack go?" is accessories rather than a second bowl. Brands like Blanco and Franke build many singles to accept roll-up racks, colanders and cutting boards over the basin, and a full workstation sink takes the idea further with an integrated ledge system — a second work zone when you need it, a clear basin when you don't. If you like the farmhouse look, fireclay apron-front singles from Shaws and ROHL follow the same one-big-basin logic; browse our apron-front sink collection to see the format.
The case for a double bowl
None of that matters much if your sink is primarily a dishwashing station.
- Separate wash and rinse zones. Hot soapy water on one side, clean rinse water on the other — faster and thriftier with water than washing everything under a running tap.
- A soak side that doesn't shut down the sink. A burnt pot soaks in one bowl while the other stays free for prep and rinsing. With a single bowl, one soaking pot occupies the entire sink.
- Task separation. Thaw meat or rinse messy produce on one side while the other stays clean.
- Dirty dishes stay corralled. Stacking the mess in one bowl keeps the other presentable in an open-concept kitchen.
The honest downsides: each bowl is narrower, so the sheet-pan problem never fully goes away, and equal-sized double bowls generally want a wider base cabinet than a compact single.
Quick comparison
| Consideration | Single bowl | Double bowl |
|---|---|---|
| Large pots and sheet pans | Fit flat, easy to fill and soak | Awkward; must angle over the divider |
| Handwashing full loads | Workable, but no rinse zone | Excellent wash/rinse workflow |
| Soaking while cooking | Occupies the whole sink | One bowl soaks, one stays usable |
| Space efficiency | Maximum basin in minimum cabinet | Divider costs usable width |
| Cleaning the sink itself | One basin, fewer corners | Two basins plus divider |
| Typical pairing | Dishwasher-first households | Handwash-heavy households |
Low-divide sinks: the genuine compromise
If you're torn, look at low-divide designs. Instead of running to the rim, the centre wall stops a few inches up from the bottom. Fill past the divider and it behaves like one big basin — a sheet pan lies across both bowls and soaks flat. Keep the water below it and you have two distinct zones for washing and rinsing. Kohler, Blanco and Franke all offer versions of the idea.
The compromise is modest but real: you can only fill one side independently to the height of the divider, so a deep, isolated soak isn't possible, and the low wall is one more edge to wipe. For households that occasionally handwash but regularly roast, it's the configuration that annoys them least.
Bowl depth: deeper isn't automatically better
Depth gets sold as a pure upgrade, and it isn't. A deep basin hides a stack of dirty dishes, splashes less, and swallows tall stockpots. But it also means more bending and reaching — a difference you feel in your lower back after a long cleanup, especially for shorter users. An undermount installation adds the counter's thickness on top of the bowl depth, so the basin bottom sits lower than the spec sheet suggests, and deep bowls steal storage from the cabinet below.
Go deep if you cook in big pots often or hate seeing dishes; stay moderate if you handwash for long stretches or are on the shorter side. If you're leaning undermount for easy counter wipe-downs, our undermount kitchen sinks cover both configurations.
Where the garburator fits in
If a garburator is part of the plan, configuration matters.
- Single bowl: the disposal sits under the one drain, which is simple — but combined with a deep basin, the unit consumes a big share of the cabinet. A rear-offset drain helps preserve storage.
- Double bowl: mounting the garburator under the smaller or secondary bowl is the classic setup. Scraping and grinding stay on one side while the main bowl remains clear for washing.
- Check the rules first. Some Canadian municipalities and many condo buildings restrict or discourage garburators, so confirm you can install one before you plan the sink around it.
The bottom line
Buy for your habits, not the showroom. Dishwasher-first household that cooks in big pans? A large single bowl — ideally with workstation accessories — will serve you better every day. Handwash-heavy home? A double bowl remains the more efficient tool. Genuinely split? A low-divide design is the rare compromise that mostly works. Compare all three formats in our kitchen sink collection, and if your renovation extends beyond the kitchen, our buying guides cover the rest of the house — including basics like measuring a toilet rough-in before you buy.
Frequently asked questions
Is a single or double bowl kitchen sink better for resale?
Neither reliably moves a sale price. Large single bowls currently read as more contemporary, but a clean, well-installed sink of either type is what buyers actually notice. Choose for how you'll live with it.
Can I replace my double bowl sink with a single bowl?
Usually, yes — a single bowl of similar overall dimensions typically fits the same base cabinet, and plumbing can be adapted to the new drain position. The details that matter are the countertop cutout (reshaping stone is a fabricator's job), drain location and the new sink's minimum cabinet requirement, so measure carefully before ordering.
Which side of a double sink should the garburator go on?
Convention puts it under the smaller bowl, keeping scraping on one side while the main basin stays free for washing. If both bowls are equal, choose the side closest to where you scrape plates — usually nearest the dishwasher — so the mess travels the shortest distance.
Do low-divide sinks actually let you soak dishes?
Yes, with one caveat. Fill above the divider and the whole sink becomes one soaking basin, big enough for sheet pans to lie flat. What you can't do is fill only one side to full depth, since independent water levels stop at the divider. If deep single-side soaking is central to your routine, a true double bowl does it better.