Walk through any showroom from Vancouver to Halifax and the kitchen faucets all look roughly the same size on the shelf. They are not. Overall heights vary by a factor of two, spout reach varies by several inches, and the hole in your countertop only accepts what it accepts. Fit problems, not finish or flow, are behind most faucet regrets, and nearly all of them are avoidable with a tape measure and ten minutes of homework.
The five dimensions that decide whether a faucet fits
Whether it is a Riobel, a Blanco or a Kohler, manufacturers publish the same handful of measurements. Learn these five and spec sheets stop being intimidating.
| Measurement | What it tells you | Why it matters |
|---|---|---|
| Overall height | Countertop to the highest point of the faucet | Clearing a window sill, shelf or cabinet above the sink |
| Spout height | Countertop to where water leaves the spout | Fitting your tallest stockpot underneath |
| Spout reach | Horizontal distance from the centre of the base to the water stream | Where the water lands in the bowl |
| Deck thickness range | The counter thickness the mounting hardware can grip | Thick quartz or butcher block can exceed the maximum |
| Hole size and count | The diameter and number of mounting holes required | Your counter is drilled, or about to be, and stone is unforgiving |
As a general guide, full-size pull-down faucets commonly stand 15 to 18 inches overall, low-profile designs closer to 8 to 12 inches, and spout reach typically falls between 8 and 10 inches. Prep and bar faucets run smaller across the board. The standard mounting hole in North America is about 1-3/8 inches, roughly 35 mm, though some models need a larger opening, so confirm before anyone drills anything.
How to measure your space
Work through five checks with a tape measure before shortlisting models.
- Measure up. Countertop to the lowest obstruction above the faucet: window sill, open shelf or upper cabinet. Overall height needs to come in under that number with a comfortable margin.
- Measure back. Centre of the mounting hole to the backsplash or window frame. Single-handle faucets with a rear-tilting lever need knuckle room behind them, and good spec sheets state the clearance required.
- Measure the sink. Front-to-back bowl width tells you the reach you need. Ideally the stream lands near the centre of the bowl, or over the divide on a double-bowl sink.
- Measure the counter thickness. Include the sink flange if the faucet mounts through the sink deck, then compare against the stated range.
- Check underneath. Pull-down faucets need free drop space below the deck for the hose and its weight. A garburator, water filter or pull-out bin crowding that space is a common surprise.
Clearance rules worth following
Codes do not dictate faucet height, so these are practical rules rather than legal ones. They hold up from the Prairies to the Maritimes.
- Windows first. Canadian kitchens very often put the sink under a window. Check the sill height before anything else, and remember opening the window matters too.
- Respect the swing arc. A spout that rotates 360 degrees is wonderful on an island and a liability against a wall. Some faucets can be limited to a partial swing.
- Match reach to the bowl. A long reach over a shallow bowl splashes; a short reach over a deep workstation sink leaves you washing against the back wall. Aim for the stream to land at or just behind the drain.
- Think about winter. If your sink sits on an exterior wall, keep the under-sink layout open enough that supply lines stay accessible and can be insulated. Not a faucet dimension, but part of the same measuring session.
Hole configuration: count and spacing before you fall in love
Kitchen sinks and counters are typically drilled for one to four holes. Most modern faucets are single-hole designs with the handle integrated into the body. Three-hole kitchen layouts usually place the outer holes on a wide spread, and older setups may add a fourth hole for a side spray or soap dispenser. The compact 4 inch centreset is a bathroom convention, not a kitchen one.
Moving from three holes to a single-hole faucet is usually easy: a deck plate, sometimes called an escutcheon, covers the unused holes, and many faucets include one. Confirm the plate spans your existing spread. Going the other direction means drilling, a job for a pro on stone and quartz. If you are buying the sink at the same time, choose one with the right number of deck holes from the start; most models in our kitchen sink collection list hole count and spacing in the specifications.
How to read a faucet spec sheet
Every reputable brand publishes a dimensioned drawing, and Canadian spec sheets usually show both millimetres and inches. A few habits make them easy to use:
- Distinguish overall height from spout height. The first is for clearance above, the second for pots below, and they can differ by several inches on a high-arc design.
- Reach is measured from the centre of the base, not the front edge of the faucet body.
- Check the maximum deck thickness and required hole diameter, especially with thick counters.
- Look for cUPC or CSA certification marks, showing certification to the plumbing standards used across Canada. The National Plumbing Code sets the baseline, but provinces and municipalities adopt their own versions, so your local plumber or inspector has the final word.
- Confirm the supply connections. Standard 3/8 inch compression fittings are the norm in Canadian homes.
If a listing does not show these numbers, ask before you order. A faucet shipped across Canada should fit the first time, whether it lands in Montreal or Moose Jaw.
Common fit mistakes to avoid
- Buying a tall gooseneck for a sink under a low window sill, then discovering it on installation day.
- Pairing a long-reach commercial-style faucet with a shallow sink and living with splash forever.
- Ignoring the deck thickness limit on a thick quartz or butcher block counter.
- Assuming a deck plate will cover any three-hole layout regardless of spread.
- Forgetting the hose drop space below the counter on pull-down models.
- Drilling the counter before the faucet's hole requirement is confirmed.
Once your measurements are written down, shopping gets fast. Filter by the numbers, not the photos: our full range of kitchen faucets ships Canada-wide, and the pull-down faucet collection is the natural short list for most family kitchens. For everything else in the room, browse our buying guides.
Frequently asked questions
What is the standard hole size for a kitchen faucet?
The common North American mounting hole is about 1-3/8 inches in diameter, roughly 35 mm. Some faucets, particularly larger commercial-style models, need a bigger opening. Check the spec sheet before drilling, since a hole can be enlarged but never shrunk.
How tall should my kitchen faucet be?
There is no single correct height. Work backwards from your constraints: overall height must clear whatever sits above the sink, and spout height should clear your tallest regularly used pot. High-arc models suit open counters and islands; lower-profile designs suit sinks under windows and shelving.
Can I install a single-hole faucet on a three-hole sink?
Usually yes. A deck plate covers the unused holes, provided it is wide enough for your spread, or the spare holes can host a soap dispenser or filtered water tap. Going the other way requires drilling and is best left to a professional on stone.
Are kitchen faucet sizes different in Canada than in the US?
No. Dimensions, hole sizes and supply connections follow the same North American conventions on both sides of the border, and Canadian spec sheets typically show metric and imperial together. What you should confirm for a Canadian installation is certification: look for cUPC or CSA marks.
