How often should a shopfront, trolley bays and a car park be cleaned?
Treat the store as several surfaces, not one job. A busy entry and the trolley bays in front of it pick up gum, drink spills and tyre dust every trading day. A first floor facade mostly collects dust and, in wet months, mould. A loading dock and the bin pad collect oil and food waste. A car park collects that plus leaves if there are trees.
The entry and trolley bays therefore need more visits than the facade. The dock and bin pad often need a different method as well as a different interval, because oil does not rinse off with the same pass that lifts leaf stain.
Set the interval per surface, per store, after a walk. Review it after a season, not after a complaint. A store under trees in summer, or next to a takeaway, will not keep the same look on the same cycle as a clean internal mall tenancy.
Why is there no one interval that fits every store?
Nobody publishes a national frequency for retail exteriors. Centre manuals, where they exist, are private to that landlord. A number copied from another brand's contract is a guess at your traffic, your trees and your weather.
Things that actually change how fast a surface looks dirty:
- Foot traffic at the doors and in the trolley bays
- Trees, especially figs and gums that drop sap and leaves
- Bin rooms, compactors and the path the contractor takes to empty them
- Oil from car parks, drive thru lanes and loading docks
- Chewing gum, which sets hard if it is left
- Climate: mould and algae on shaded masonry in humid months
- The surface itself. Open concrete holds stain. Dense tile rinses cleaner
A fleet schedule is a table of those surfaces, not a single monthly date for every store.
Where is wash water allowed to go?
Stormwater drains take rain to creeks, rivers and the harbour untreated. That is the point of the NSW EPA line, still current in 2026: the drain is just for rain. Water that has run across a shopfront, a car park or a dock carries detergent, oil, gum residue, silt and whatever was on the ground. That mix is not rain.
On a store visit the water has to be kept out of pits, kerb inlets and the road gutter. Typical controls are drain covers or a portable bund, a recovery vacuum or pump, and a lawful place to put what was collected. Dry methods first for oil, then water, so the volume to manage is smaller.
Putting the recovered water to sewer is not automatic. In NSW the EPA says a wash area that discharges to sewer needs approval as trade waste. The same idea applies in other states: the water authority decides, not the cleaner.
What do NSW, Victoria and Queensland actually require?
NSW. The EPA's wash down guidance is blunt: runoff from washing must not enter stormwater. Discharge to sewer, where it is allowed at all, is through a collection pit and a trade waste agreement. The legal hook is water pollution under the Protection of the Environment Operations Act 1997.
Victoria. The general environmental duty requires everyone to prevent waste, including wastewater, entering stormwater so far as reasonably practicable. EPA Victoria has already fined a builder, in March 2025, after high pressure cleaner wash water from a driveway went into stormwater at Maddingley.
Queensland. The Environmental Protection Regulation 2019, Schedule 10 item 21, lists waste and waste water from outdoor cleaning, including high pressure water blasting of commercial premises, as a prescribed water contaminant. Section 440ZG of the Environmental Protection Act 1994 makes it an offence to put that into stormwater, a roadside gutter or a waterway, or to leave it where it can wash there.
Other states follow the same idea even where the section numbers differ: rain in the stormwater system, wash water managed. Council local laws can add conditions on the footpath itself. Check the site, do not assume last month's job in another suburb is the rule here.
What should happen on a store visit?
- Walk the drains, kerb inlets and falls before the washer starts
- Cover or bund the inlets that wash water would reach
- Treat gum and oil as their own jobs, not as a side effect of rinsing
- Recover the water. Do not blow it to the next tenancy or the road
- Dispose of it the way that site's water authority and council allow
- Photograph before and after, including the drain protection in place
Windows, painted render and asbestos containing material are not a generic blast. Pressure that is fine on a dock slab will mark a facade. Safe Work Australia publishes a separate guide on high pressure water jetting risks. The person on the lance needs to know which surface they are on.
How do you set a schedule across a store fleet?
Walk a sample of stores that includes the dirtiest entries, the car parks under trees, and a clean internal tenancy. Write one method per surface type. Price per store, or per visit, so finance can see the year. Run it after hours so customers are not walking through wet ground.
That is how Nextage runs pressure cleaning across retail fleets: a schedule per store, wash water managed where the rules require it, and photos every visit. The interval is not a slogan. It is whatever keeps that entry looking like the rest of the brand.
