If you’re thinking about booking exterior cleaning for your home, one of the first questions you’ll have is:
“How much does it cost?”
The answer depends on the service, property size, access, and condition — but this guide breaks down what influences pricing and what homeowners across New Zealand can expect in 2026.
What Affects the Cost of Exterior Cleaning?
Exterior cleaning pricing isn’t random. It’s based on several key factors:
1. Property Size
Larger homes naturally require more time, solution, labour, and setup.
2. Height & Access
Single-storey homes are generally quicker and easier.
Multi-level homes or steep access areas require additional safety measures.
3. Surface Type
Timber, plaster, brick, metal roofing, concrete, and composite decking all require different methods.
4. Level of Contamination
Light surface dirt costs less to clean than heavy moss, mould, lichen, or long-term staining.
5. Bundled Services
Combining services (house + gutters + roof, for example) often improves overall value.
Typical Exterior Cleaning Services & What Impacts Pricing
House Washing (Soft Wash)
House washing is one of the most requested services.
Pricing depends on:
- Square metre size
- Cladding type
- Level of mould and algae
- Access around the property
Professional soft washing protects paint and cladding while delivering longer-lasting results.
Roof Cleaning & Moss Treatment
Roof cleaning pricing varies depending on:
- Roof material (tile vs metal)
- Pitch and safety requirements
- Extent of moss, mould, and lichen
Heavily contaminated roofs require treatment solutions that neutralise growth at the root.
Gutter Cleaning
Gutter cleaning cost is influenced by:
- Length of gutters
- Height of the home
- Blockage severity
- Whether debris removal is required
Regular gutter cleaning prevents overflow staining and moisture damage.
Deck Cleaning
Deck cleaning pricing depends on:
- Timber vs composite
- Size of deck
- Level of algae or mould buildup
- Whether prep for staining is required
Using the correct low-pressure method is critical to avoid surface damage.
Concrete Cleaning & Water Blasting
Driveways, patios, and paths vary widely in condition.
Pricing factors include:
- Square metre area
- Oil stains or rust marks
- Degree of surface wear
- Need for specialised treatment
Heavily stained concrete requires additional treatment compared to light surface grime.
Why Cheap Exterior Cleaning Can Cost More Long-Term
Choosing the cheapest quote can sometimes lead to:
- High-pressure damage
- Stripped paint
- Splintered decks
- Water forced into wall cavities
- Faster regrowth of mould and algae
Professional exterior cleaning focuses on correct methods, not just speed.
How Often Should Exterior Cleaning Be Done?
Most homes benefit from:
- House washing: Every 12–18 months
- Roof treatment: Every 2–3 years
- Gutter cleaning: Annually
- Deck cleaning: Every 12–18 months
- Concrete cleaning: As required
Regular maintenance reduces long-term costs significantly.
Is Exterior Cleaning Worth It?
In most cases, yes.
Professional exterior cleaning:
- Protects your largest asset
- Extends paint and surface lifespan
- Improves street appeal
- Prevents costly repairs
- Maintains property value
When compared to repainting, deck replacement, or roof repairs, preventative cleaning is far more affordable.
Getting an Accurate Quote
The best way to get accurate pricing is through a property-specific assessment.
Most professional companies will:
- Review photos or visit the property
- Assess access and surface type
- Provide a clear written quote
- Outline exactly what is included
Transparent quoting ensures no surprises.
Final Thoughts: Exterior Cleaning in 2026
With rising labour and material costs across New Zealand, preventative exterior maintenance is more important than ever.
Regular professional cleaning helps:
- Avoid expensive repairs
- Extend the life of surfaces
- Maintain property appearance
- Protect your investment
If you’re unsure which services your property needs, requesting a no-obligation quote is the easiest place to start.