Quick answer
Villa and bungalow window sills commonly sit at 750–850 mm, below the standard 900 mm kitchen bench. Four fixes, in order: run the bench past at 900 mm and cap into the reveal; drop that section to about 835 mm; stop the run short; or raise the sill when the window is being replaced anyway.
Key points
- The clash is built in: NZ benches finish at 900 mm (150 kick + 720 carcass + top) while pre-1940s sills sit at 750–850 mm.
- Most common and usually best: run the bench through at 900 mm and let it pass in front of the bottom rail, capped into the reveal. You lose 50–150 mm of glass and keep a straight benchtop.
- A dropped section, about 835 mm under an 850 mm sill, keeps the glass clear but buys you two benchtop joins and a step people put wet boards across.
- Stopping the run short of the window wastes prime bench where the light is; treat it as the last resort inside the room.
- Raising the sill is the clean structural fix, but it only stacks up when the window is being replaced or rebuilt anyway.
- Whatever you pick, the sill junction detail and its sealant line matter more than the option itself; that is where water gets in.
The pencil line tells the story before anyone says a word. New kitchen going into a 1910s villa; on the freshly lined wall someone has struck the finished bench line at 900 mm, dead level. The line reaches the window over the future sink and passes 120 mm above the sill, cutting across the bottom rail of a kauri double-hung older than anyone alive. The line is right. The window is right. They are simply not right together, and someone has to decide who wins.
This clash is standard issue in villas and bungalows from Devonport to Sandringham, and it catches people because both numbers feel fixed. The bench height is: 150 mm toe kick plus a 720 mm carcass plus the benchtop lands you at 900 mm, and there are good reasons NZ benches sit at 900 mm. The sill is where a joiner put it a century ago, commonly 750–850 mm off the floor, set for a house that had a freestanding scullery bench at 800 mm and no concept of a dishwasher. Here is every way through, ranked the way we rank them when we measure these houses, junction details included.
What do you do when the bench line hits the window?
You have four real options. Run the bench past at full height and cap into the reveal. Drop the bench at the window. Stop the run before the window. Or move the sill. Everything else you will see online is a variation of one of these. The right pick depends on three measurements you should take before any design work: sill height off the floor, width of the window, and how much of the run the window occupies. A 600 mm wide window in a 3,600 mm run is a detail. A 1,800 mm bank of casements over the only possible sink position is the whole design problem.
The three in-room answers to a 900 mm bench meeting a 780 mm sill: run past, drop the section, or stop short.
Option 1: run the bench past at 900 mm
It is what we recommend on most villas, and what you see in most well-done renovations from Herne Bay to Mt Eden. The bench holds its 900 mm line and runs straight past the window. The benchtop passes in front of the bottom rail, and the gap between the back edge of the top and the glass gets closed with a capping piece scribed into the window reveal, usually the benchtop material itself returned into the opening, or a painted timber infill on a heritage job. With a sill at 780 mm and a 40 mm thick top, you are covering roughly the bottom 120 mm of the window, which on a tall double-hung is a small fraction of the glass and sits below your natural sightline at the sink anyway.
What you gain is everything that matters day to day: one continuous benchtop with no joins at the window, a straight line for the dishwasher and underbench cabinets to run under, and a sink that can sit exactly where the light is. What you lose is that strip of glass and the ability to fully open a casement stay that folds inward, worth checking before you commit. Sashes that slide vertically keep working fine. The mixer will stand in front of the glass, so line the sink up with a fixed pane or check the tap clears the sash swing before the cut-out is set. The one non-negotiable is the junction: the capping must fall toward the bench, not back toward the timber, and the joint between capping and reveal gets a neutral-cure sealant bead, because that shelf is where dish water lands forever after.
Option 2: drop the run to 835 mm at the window
Where the window is wide, or the bottom rail carries something worth keeping in full view, the run can step down through the window bay, commonly to about 835 mm, which tucks a standard top under a sill in the 850 mm range while keeping usable working height. The carcasses in that bay get built 65 mm shorter, which is a straightforward workshop job, and the benchtop steps with them.
Be clear-eyed about the costs. You now have two extra benchtop joins, one at each step, sitting in the wettest part of the kitchen if the sink lives in the bay. Laminate tops handle a step with an end cap well enough; stone wants each level as its own piece with a polished edge, which adds fabrication cost. The step itself collects leaning chopping boards, and anything cylindrical rolls off the high side. A dishwasher cannot go under the 835 mm section, since it needs the full 900 mm stack even on adjustable feet, so plan the appliances onto the full-height runs either side. Dropped runs photograph beautifully. Live with the joins knowingly.
Options 3 and 4: stop short, or move the sill
Stopping the run before the window sounds respectful of the house and is usually the worst of the four for the kitchen. The window is where the light and the outlook are, which is exactly where you want bench, and stopping short strands 600–900 mm of the best wall doing nothing. It earns its place only where the window comes nearly to the floor, as some villa casement banks do, or where the run has length to spare elsewhere. If you are stopping short just to dodge a hard junction detail, price the junction first; it is cheaper than losing a metre of bench.
Raising the sill is the clean fix: lift the sill clear of the 900 mm bench line, 950 mm or higher, and the bench slides under with a sealed upstand running up to the new sill. But it means rebuilding the bottom of the window, new sill, shortened sashes or new joinery, exterior weatherboard patching and flashings, so it only makes sense bundled into work you were doing anyway. When the windows are shot and being replaced anyway, raise the kitchen window's sill as part of that job and the problem dissolves. In special character areas, note that changes visible from the street can need consent and matching profiles; the villa-specific rules of thumb are covered in our Devonport heritage villa guide, and your architect or council confirms what applies to your street. Interior changes like capping a sill behind a bench are not usually the contentious part.
| Option | Glass lost | Joins added | Best when |
|---|---|---|---|
| Run past at 900 mm, cap into reveal | Bottom 50–150 mm | None | Default for most villas and bungalows |
| Drop section to 835 mm | None | Two | Wide window bay, no dishwasher in the bay |
| Stop the run short | None | None | Window near floor level, or run length to spare |
| Raise the sill | None (reframed) | None | Windows being replaced or rebuilt anyway |
Splashbacks, sealant and the wet edge
The splashback conversation changes at a window wall. On a standard wall you have a 600 mm splashback zone between the 900 mm bench and the underside of the uppers. At the window, the glass itself occupies most of that zone, so the splashback becomes the strips beside the window and the capping below it. Take whatever splashback material you are using right to the reveal edge and seal the junction; tiled strips need their perimeter siliconed, not grouted, because grout cracks where old timber moves seasonally, and villa walls move. If the sink sits under the window, upgrade the capping material: benchtop-matched laminate with sealed edges at minimum, or a solid surface strip, because that 100–150 mm shelf catches more water than any other horizontal in the kitchen. These houses also punish assumptions; walls out of square by 20 mm over a run are normal, which is why nothing being square in a villa kitchen is required reading, and why a site measure before manufacture is non-negotiable on our jobs.
Decide it at measure, not at install
The sill decision has to be made before cabinets are ordered, because it sets carcass heights, benchtop lengths and where the joins fall. Measure three things this week: floor to sill at each window on the kitchen walls, window width including architraves, and floor levels across the room, since a 20 mm floor slope changes where the bench line really lands. Photograph the windows straight-on with a tape held beside them. That is enough for a designer, or for us, to rank your options and price them; the surprises that blow out villa kitchen budgets are mostly discoverable this way, as the replacement surprises guide sets out. Bring the sill measurement to the first conversation and the window stops being a problem and becomes a detail.
Frequently asked questions
What height is a kitchen bench compared to a villa window sill?
A standard NZ kitchen bench finishes at 900 mm: a 150 mm toe kick, a 720 mm carcass and the benchtop. Villa and bungalow sills were commonly set at 750–850 mm, so a new bench line typically lands 50–150 mm above the sill. That overlap is the standard clash in pre-1940s Auckland renovations, and it has four established solutions.
Can you run a kitchen bench in front of a window?
Yes, and it is the most common solution. The bench holds its 900 mm height and passes in front of the window's bottom rail, with the gap to the glass closed by a capping scribed into the reveal, sealed and falling toward the bench. You lose the bottom 50–150 mm of glass. Check that any inward-opening casement hardware still clears the benchtop before committing.
Can you lower part of the kitchen bench under a window?
Yes. The run can step down so the top sits just under your sill — about 835 mm under an 850 mm sill, deeper for lower sills — with the carcasses in that bay built shorter to suit. The trade-offs are two extra benchtop joins in a wet area, a step that interrupts the work surface, and no dishwasher under the lowered section, because a dishwasher needs the full 900 mm bench height. It suits wide window bays where keeping the whole sash visible matters.
Is it worth raising a window sill for a new kitchen?
Only when the window is being replaced or rebuilt anyway. Raising a sill means new sill timber, shortened sashes or new joinery, exterior cladding patches and flashings, which is disproportionate for the kitchen alone. Bundled into planned window replacement it is the cleanest fix of all, giving the bench a clean, sealed junction under the new sill height.
What happens to the splashback around a kitchen window?
The glass occupies most of the 600 mm splashback zone, so the splashback reduces to the strips beside the window and the capping beneath it. Run the material to the reveal edge and seal that junction with sealant rather than grout, since older timber walls move seasonally. If the sink is under the window, use a sealed, water-tolerant capping, because that ledge catches more water than any other surface in the kitchen.
Do heritage rules stop you changing a villa kitchen window?
Sometimes, for changes visible from the street in special character areas, where altering joinery can need consent and matching profiles. Interior work such as running a bench past the sill or capping into the reveal is generally not the contentious part. The rules vary by suburb and by what your street is zoned, so confirm with council or your designer before pricing a sill raise on a character frontage.
Why does the bench always swell at the window in old kitchens?
Because the junction between benchtop and sill was never sealed properly. Condensation runs down the glass every winter and dish water splashes the capping daily, and any raw particleboard edge within reach absorbs it. Once the edge swells it cannot be shrunk back, only stabilised or replaced. A capping with a fall toward the bench and a sealed perimeter prevents the whole failure outright.
Which option is best if the sink has to go under the window?
Run the bench past at 900 mm with a sealed capping into the reveal. It keeps one continuous top with no joins in the wettest zone, puts the sink in the light, and leaves the underbench clear for a dishwasher beside the sink cabinet. A dropped section under a sink adds two joins exactly where water sits, and stopping short moves the sink away from the window, which defeats the point.