How much does pressure washing cost in Darwin?
A standard driveway clean in Darwin costs $150–$400, and washing the outside of a single-storey house $250–$700, or $450–$1,100 over two storeys. Operators who charge by the hour ask $40–$100. In the Top End heat and humidity, mould and algae never stay away for long, and a full exterior mould treatment with the wash is $300–$900. Painted and rendered walls get a gentler soft wash, $300–$650 for a single-storey home. All prices include GST.
Comparing cities, or after the Australia-wide picture? See the national guide: Pressure washing cost in Australia.
Detailed Pricing — Pressure Washing Cost in Darwin 2026
| Service | Low | Typical | High |
|---|---|---|---|
| Pressure washing (hourly rate) | $40/hr | $65 | $100 |
| Driveway cleaning (standard) | $150total | $250 | $400 |
| Full house exterior wash (single storey) | $250total | $420 | $700 |
| Full house exterior wash (double storey) | $450total | $750 | $1,100 |
| Deck / patio cleaning | $150total | $280 | $450 |
| Fence cleaning (per lm, one side, up to 1.8 m) | $5/lm | $10 | $18 |
| Roof cleaning (standard home) | $300total | $700 | $1,300 |
| Pool surrounds / paving | $150total | $280 | $380 |
| Concrete path / footpath | $100total | $140 | $220 |
| Brick, block or rendered wall clean (single wall, up to ~30 m²) | $120total | $160 | $300 |
| Soft wash, house exterior (single storey, walls + eaves) | $300total | $480 | $650 |
| Commercial building wash (low-rise, up to 3 storeys) | $400total | $800 | $2,000 |
| Mould treatment & wash (full exterior) | $300total | $550 | $900 |
| Mould-inhibitor treatment (add-on) | $50per job | $70 | $150 |
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Get Darwin quotes →Prices include GST. Based on Darwin metro area, October 2026. Outer suburbs may vary.
What Affects Pressure Washing Costs in Darwin
The wet grows it back
Darwin's wet season runs from November to April, the same months as the cyclone season (BOM), and at Darwin Airport January alone averages 432.1 mm of rain while nights stay near 25 °C (BOM averages). That warm damp grows black mould and green algae quickly on shaded walls, eaves and slabs. A wash in the dry, when June and July each average under 2 mm, plus the $50–$150 inhibitor, slows the regrowth.
Soft wash or full pressure
Painted block, render and fibre-cement sheeting should be cleaned at low pressure with a mould-killing solution, not blasted. A single block or rendered wall comes to $120–$300. Bare concrete takes full pressure: a path is $100–$220. Ask the operator to name which method goes on which surface; one rate for everything usually means one method for everything.
Units, renters and the body corporate
A quarter of Greater Darwin dwellings are flats, 25% against 14.2% nationally, and 43.8% of households rent (ABS 2021 Census). Balconies, walkways and car parks in a unit block can be done on one booking through the body corporate, priced as a low-rise job at $400–$2,000. NT tenancy law asks for a rental back in a reasonably clean condition, allowing for reasonable wear and tear.
Roofs and working at height
A roof clean on a standard home is $300–$1,300. NT WorkSafe regulates work at height, so ask what harness or anchor system the operator uses and whether the gutters are cleared on the same visit. The best time is after the wet ends in April, once the storms have dropped their leaf litter, and well before the build-up to the next wet.
Decks, pools and fences
Timber decking needs a lighter touch than concrete, and a deck or patio clean is $150–$450. Pool surrounds and paving run $150–$380; algae on wet paving is a slip risk as much as an eyesore. Fences are priced by the metre, $5–$18 for one side, so measure the run before asking for a figure.
Before a repaint or a sale
Paint will not hold on a mouldy wall, so a wash is the first step of any exterior repaint, and a painter may ask for it to be done a few days ahead so the walls dry out. For a sale or a new tenancy, a driveway and front path are the cheapest lines for street appeal: the path alone is $100–$220.
How to Save Money on Pressure Washing Cost in Darwin
Pressure Washing Cost in Darwin by Job Size
Say a block has two rendered walls, each within the row's roughly 30 square metres, and a concrete path to clean. Two walls at $120–$300 each plus the path at $100–$220 come to $340–$820.
In Darwin the wet season sets the pace. Black mould and green algae spread over shaded walls, eaves and slabs, so a job of that size can add the mould row at $300–$900 and the inhibitor at $50–$150. A unit block books balconies, walkways and car parks together at $400–$2,000, and a two-storey house moves from $250–$700 to $450–$1,100.
Pressure Washing Cost in Darwin: What the Quote Should Include
A Darwin quote is shaped by the wet season, which runs from November to April and grows black mould and green algae on shaded walls, eaves and slabs. It should show which surface gets a soft wash, which gets full pressure, and what is added to slow regrowth.
- Painted block, render and fibre-cement sheeting named for a low-pressure wash with a mould-killing solution, with the single-storey house line at $300–$650.
- Bare concrete slabs and paths marked for full pressure, with the path line at $100–$220 and the area in metres.
- The method written beside each surface, so one rate is not applied across everything on the property.
- The mould treatment and exterior wash on one line at $300–$900, with the inhibitor at $50–$150 to slow regrowth in the wet.
- For a repaint, the painter's timing request for the wash recorded, as a mouldy wall is a poor base for new paint.
- A unit block's balconies, walkways and car parks booked together through the body corporate, read against $400–$2,000.
- The roof at $300–$1,300, booked for after the wet season ends in April, with the harness or anchor system named and the gutters said to be in or out.
- Decks at $150–$450 cleaned with a lighter touch than concrete, and pool surrounds at $150–$380 with algae on wet paving treated.
- Fence runs measured in metres, one side, against $5–$18 a metre.
Frequently Asked Questions — Pressure Washing Cost in Darwin
Our Methodology
These are independent estimates from public cost guides, marketplaces and industry rate data, and no tradesperson can influence them, so always get a few quotes. Last reviewed October 2026. Read our full methodology →