Chemistry kills the mould. Pressure just moves it.
Soft washing applies detergent at low pressure, kills mould, algae and lichen at the root, then rinses gently. It is the standard for weatherboard, cedar and stucco, and the only safe method for Auckland's monolithic plaster stock. Published fixed pricing runs $399 to $649+ incl. GST by floor area, windows included at the transparent end of the market.
Is this your stream?
Mould, algae or lichen on cladding, a pre-paint or pre-sale exterior reset, or the annual wash that keeps Auckland's humidity from winning. Any cladding type: weatherboard, cedar, stucco, brick, and especially plaster.
Moss on the roof is roof treatment, a spray-and-leave chemical job. Driveways, paths and patios are water blasting, the one place high pressure belongs.
What soft washing costs in Auckland
Auckland has genuine price transparency here: multiple operators publish fixed menus. Storeys and access move the quote.
$399–$649+
The SoftWash Company publishes incl.-GST rates with windows included: under 150m² $399, 150–240m² $499, 240–325m² $599, over 325m² from $649.
$200–$600
MoneyHub's Auckland guide puts a typical house wash at $200–$600, usually a one-day job. EPS publishes $220–$450+GST; Spruce advertises from $249.
+$110–$220+
CleaningPro's itemised list adds $110+ for double-storey and $220+ for triple-storey. Height access and rigging are the real cost drivers after floor area. State storeys when quoting.
Auckland soft wash providers, compared
Fixed-price menus, review-heavy locals and the long-running nationals. Hover a row for the detail that matters.
Choose by situation
The SoftWash Company publishes its full incl.-GST menu by floor area with windows included. Spruce advertises from $249 and EPS from $220–$450+GST. Budget before anyone visits.
Say so when you quote, and accept only soft wash. High pressure on plaster drives water into vulnerable junctions: Auckland's leaky-home history makes this a genuine risk, not a preference. Ask about cladding-damage insurance explicitly.
Maximum Wash (Onehunga, 4.7 stars across 115 Google reviews) is noted for careful paintwork on old villas and difficult sites. House Wash New Zealand holds a 5.0 Google rating across 320 reviews and does pre-paint prep.
Bundle: DNA Housewash covers soft wash, roof treatment and gutters on the North Shore; Chemwash brings 40+ years of systems. Bundling one crew beats booking separate trades.
Common mistakes
Water blasting monolithic plaster cladding: Auckland's leaky-home legacy makes this genuinely dangerous. High pressure drives water into already-vulnerable junctions. If your home is plaster-clad, soft wash is the only safe method, and say so when you quote.
Assuming the house wash includes the roof: a standard wash runs gutter-line to ground. Roof treatment is a separate add-on at $200–$500. Ask explicitly what the quote covers.
Letting mould go for years: Auckland's humid climate grows mould, algae and lichen fast, especially on shaded southern walls. Annual washing prevents the buildup that turns a $399 soft wash into a restoration job.
Comparing quotes without stating storeys: double-storey adds $110+ at CleaningPro, triple-storey $220+. Height access and rigging change the price significantly. State it upfront.
Ignoring runoff rules: Auckland Council has rules about chemical runoff reaching stormwater. Reputable crews carry containment gear and liability cover. Ask how runoff is managed, especially near waterways.
Booking the cheapest quote without checking what chemistry is used: soft washing is a chemical process. Ask what is being applied, whether it is plant and pet safe, and how the operator protects gardens.
FAQ
How much does soft washing cost in Auckland?
MoneyHub's Auckland guide puts a typical house wash at $200–$600, usually a one-day job. The SoftWash Company publishes fixed rates incl. GST with windows included: $399 under 150m², $499 for 150–240m², $599 for 240–325m², from $649 over 325m². EPS runs $220–$450+GST; Spruce advertises from $249.
Soft wash or water blasting for the house?
Soft wash, always, for cladding. Low pressure plus chemistry kills mould, algae and lichen at the root and is safe on weatherboard, cedar, stucco and plaster. High pressure belongs on driveways and concrete only: it strips paint and can force water behind cladding, a serious risk on Auckland's monolithic plaster stock.
How often should an Auckland house be washed?
Annually is the standard recommendation. Auckland's humidity drives fast mould and algae growth, especially on shaded southern walls and bush-adjacent sections. Coastal suburbs may need more frequent cycles due to salt air.
Is soft washing safe for gardens and pets?
The chemistry is applied diluted and rinsed, and reputable operators pre-wet and protect planting, but it is still a chemical process. Ask what is being applied, how gardens are protected, and keep pets inside during application. Operators who cannot answer the chemistry question clearly are a flag.
What should I ask before booking?
State cladding type, storeys, access and any leak history. Ask whether the price includes GST and windows, what chemistry is used and how runoff is contained, whether they carry insurance for cladding damage, and whether the roof, driveway or gutters are extras or can be bundled.
Price transparency goes to The SoftWash Company ($399–$649+ incl. GST, windows in), reputation-led booking to House Wash New Zealand, villas and tricky sites to Maximum Wash, the North and West to Mr House Wash, brand history to Chemwash, North Shore bundles to DNA Housewash. Never put high pressure on cladding, declare plaster construction when you quote, ask about the chemistry and runoff containment, and treat the annual wash as prevention in Auckland's humidity.