Nelson's sunny climate slows mould growth compared to wetter cities, but lichen on roofs and decks is still common. Pre-paint house washing is a routine preparation step for Nelson homes. Here's what house washing costs in Nelson in 2026.
Nelson House Washing Costs 2026
| Service | Nelson 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.
Nelson House Washing Market
Nelson's sunny climate slows mould growth compared to wetter cities, but lichen on roofs and decks is still common. Pre-paint house washing is a routine preparation step for Nelson homes.
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 Nelson?
Nelson's sunny climate slows mould growth compared to wetter cities, but lichen on roofs and decks is still common. Pre-paint house washing is a routine preparation step for Nelson homes. For most Nelson 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 Nelson house washers: House Washers Nelson | Post a Job Free
How much does house washing cost in Nelson? 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 Nelson