How often should Sydney windows be cleaned?
Waterfront Sydney homes need window cleaning two to three times a year. A street or two back from the water, twice. Inland, once or twice. Salt drives the schedule, not visible dirt — the film rebuilds on glass long before the panes look grubby. Schmick window cleans start at $150; most single-storey homes run $150-$550 by window count.
Salt sets the schedule, not what you can see
Most homeowners clean windows when they look dirty. That is the wrong trigger in Sydney. On the harbour and along the beaches, onshore wind carries salt straight onto your glass, and it starts rebuilding the day after a clean. The film is invisible at first. It attracts moisture, grabs dust and pollen, and slowly turns glass hazy — a dullness you stop noticing because it arrives gradually. By the time the panes look grubby, the salt has been sitting there for months.
This is why coastal cadence differs from inland cadence. Inland, glass mostly collects dust, pollen and spider work — cosmetic, slow, forgiving. Near the water, the load is chemical as well as cosmetic. Salt holds moisture against the glass and the frames, and hardware wears faster under it. A wash resets the clock. So the question is not whether your windows are dirty. It is how fast the salt comes back — and that depends almost entirely on how close you live to the water.
The matrix: waterfront, a street back, inland
Waterfront and direct sea-spray homes — Vaucluse above the harbour, Mosman's foreshore streets, anywhere in Manly that can hear the surf — need two to three cleans a year. The salt rebuild is fast enough that a single annual clean mostly just documents the decline. A street or two back, the spray load drops sharply but does not disappear. Twice a year keeps that glass genuinely clear, rather than merely cleaner than last year.
Inland — the upper North Shore, anywhere the sea breeze arrives without the salt — once or twice a year is honest. Tree-heavy suburbs like St Ives swap salt for sap, pollen and dust, which move slower and treat glass more kindly. One clean a year is defensible for a shaded, protected house. Two is better if you have big glass, a pool, or a view you actually paid for. Past that, you are polishing for its own sake.
What a clean cannot fix
A window clean removes what sits on the glass. It does not remove what has become part of it. Hard-water spotting baked on over years, mineral etching from a sprinkler hitting the same pane every morning, scratches left by a previous cleaner's blade — none of that washes off. Fogging between the panes of a double-glazed unit is a failed seal, not dirt, and no cleaner on earth can reach it.
The cadence matters precisely because of this. Glass cleaned on schedule rarely develops permanent marking — deposits come off before they bond. Glass that waits years between cleans sometimes comes back most of the way and stops there, and no amount of extra scrubbing changes that. If a pane will not fully recover, we say so before we start, not after. Regular cleaning is cheaper than glass replacement, and considerably cheaper than pretending.
Put it on the calendar, not the to-do list
Cadence only works if it happens. The usual pattern: one enthusiastic clean, then eighteen months of meaning to book another. On the coast, that gap undoes the benefit entirely — the glass is back to a salt-loaded baseline long before the second visit ever happens. Book the year's cleans in advance, spaced evenly. Waterfront: roughly every four months. A street back: autumn and spring. Inland: pick a season and keep it.
Timing within the year matters less than the interval, but there are sensible anchors. A spring clean lifts winter grime and pollen before the entertaining season. An autumn clean clears summer's salt and storm residue before winter's low sun starts pointing out every streak. If windows are one line in a bigger exterior routine, our maintenance calendar lays out the full year — and bundling windows with gutters or a house wash on the same visit saves 5-15 per cent.
The number for your house
Window cleaning starts at $150. Most single-storey Sydney homes land between $150 and $550, priced by window count, and a second storey adds about 40 per cent. Multiply by your tier — two or three visits on the waterfront, two a street back, one or two inland — and you have your real annual number for glass you can actually see through. No mystery, no inspection theatre.
If you would rather not do the arithmetic, the instant quote does it for you — answer a few questions about your place and it returns a firm, bookable price in about 60 seconds, straight from the live price book. That price holds unless the house is materially different from what you told us. And if you want the cadence handled without thinking about it again, the Schmick Plan starts at $89 a month and keeps the schedule for you.