New Plymouth's high rainfall and westerly salt air from the Tasman Sea accelerates algae and mould growth on home exteriors. Regular house washing extends exterior paint life significantly. Here's what house washing costs in New Plymouth in 2026.
New Plymouth House Washing Costs 2026
| Service | New Plymouth typical cost |
|---|---|
| Standard house wash (3-bed) | $280–$580 |
| Large house wash (4–5 bed) | $380–$750 |
| Roof treatment (moss / lichen) | $280–$680 |
| Driveway / path pressure wash | $120–$280 |
| Deck wash (per m²) | $4–$12/m² |
| Gutter clean (per linear metre) | $6–$15/m |
| Window clean (exterior, per window) | $8–$20 |
| Full exterior package (house + roof + drive) | $650–$1,400 |
All prices GST inclusive. Broadly regional.
New Plymouth House Washing Market
New Plymouth's high rainfall and westerly salt air from the Tasman Sea accelerates algae and mould growth on home exteriors. Regular house washing extends exterior paint life significantly.
Soft Wash vs Pressure Wash
Soft wash (low pressure + chemical treatment): Preferred for most NZ homes. A biocide kills mould, algae, and lichen at the root — prevents quick regrowth. Safe on weatherboards, painted surfaces, and roofs. Results last 2–4 years.
High pressure wash: Good for concrete driveways, paths, decks. Too aggressive for most painted or clad surfaces — can force water behind cladding or strip paint. Not recommended for roof washing.
Which to use: Soft wash for the house exterior and roof. High pressure for concrete and hard surfaces.
How Often Should You Wash Your House in New Plymouth?
New Plymouth's high rainfall and westerly salt air from the Tasman Sea accelerates algae and mould growth on home exteriors. Regular house washing extends exterior paint life significantly. For most New Plymouth homes: every 2–3 years minimum. Annual washing recommended if you have a lot of shading (overhanging trees) or if south-facing walls are affected by persistent mould.
Pre-paint: Always wash before repainting — paint won't adhere properly to mould or dirt.
Find New Plymouth house washers: House Washers New Plymouth | Post a Job Free
How much does house washing cost in New Plymouth? Standard 3-bed house: $280–$580. Large house: $380–$750. Full exterior package (house + roof + driveway): $650–$1,400.
Related: House Washing Cost NZ | Painters New Plymouth