Water blasting is a highly effective and eco-friendly cleaning method widely used in New Zealand for house exteriors, driveways, and more.
It uses high-pressure water to remove dirt, grime, and moss, making properties look like new. The water blasting house cleaning cost varies depending on factors like house size, the number of storeys, and additional services like driveway or roof cleaning.
This guide will walk you through the typical pricing for house washing, driveway cleaning, and other water blasting services, helping you estimate the costs for your property.
What is Water Blasting?
Water blasting, also known as pressure washing, is a cleaning technique that uses high-pressure water to remove dirt, grime, moss, mould, and other debris from exterior surfaces. The powerful stream of water is directed at the surface, effectively loosening and washing away contaminants without the need for harsh chemicals.
Water blasting is suitable for a wide range of surfaces, including house walls, roofs, driveways, decks, fences, and even windows. It’s particularly effective for cleaning tough surfaces that accumulate dirt or mould over time.
Compared to other cleaning methods, water blasting offers several benefits. It’s faster and more thorough than traditional scrubbing, especially for large surfaces.
Unlike soft washing, which uses low-pressure water and chemicals, water blasting relies on high-pressure water alone, making it an ideal option for removing stubborn stains and built-up grime.
Water Blasting Costs by Number of Storeys (House Wash)
The cost of water blasting increases with the number of storeys on a house due to factors like height, accessibility, and safety requirements. Two-storey homes and larger properties require more time and effort, as the added height poses challenges for both the cleaning process and equipment setup.
For single-storey homes, the water blasting is relatively straightforward and less time-consuming, making it the most affordable option.
However, two-storey and multi-level homes involve additional planning, equipment, and potentially higher safety measures, which increase the cost.
Pricing Chart – Water Blasting Costs by Number of Storeys (House Wash):
| House Type | Typical Price Range (NZD) |
|---|---|
| Single-storey house | $249 – $320 + GST |
| Two-storey house | $299 – $399 + GST |
| Large or multi-level homes | $399 – $550 + GST |
Two-storey homes typically cost more due to the need for extra equipment, such as ladders or scaffolding, and longer access time for hard-to-reach areas. The pricing also reflects the additional labor involved in safely completing the job.
Water Blasting Cost Per Square Metre (House Washing)
In New Zealand, water blasting services for house washing are often priced by the square metre of the property. This method allows for a more accurate estimate based on the actual surface area to be cleaned, rather than time spent on the job.
Larger homes typically cost less per square metre, as they may involve simpler surface area calculations, despite the increased total area.
Average Rates:
- $1.50 – $2.50 per sqm + GST (for house washing)
House Washing Cost Examples
| House Size | Estimated Cost (NZD) |
|---|---|
| 120 sqm | $249 – $269 + GST |
| 180 sqm | $279 – $299 + GST |
| 250 sqm | $320 – $350 + GST |
| 350 sqm | $399 – $430 + GST |
| 450+ sqm | $430 – $550 + GST |
The cost per square metre varies depending on the size of the house and the condition of the surfaces being cleaned. Larger houses tend to sit at the lower end of the pricing scale, while smaller properties may cost more per square metre due to the time required to clean every surface.
Water Blasting Driveway Cleaning Cost
Driveways are often subjected to heavy dirt, oil stains, tyre marks, and even moss, making them an ideal candidate for water blasting.
Driveway cleaning requires higher pressure than house washing to remove tough stains and restore the surface’s appearance. The cost for driveway water blasting depends on the size of the driveway and the condition of the surface.
Driveway Size and Typical Cost:
| Driveway Size | Typical Cost (NZD) |
|---|---|
| Small (20–30 sqm) | $120 – $180 + GST |
| Medium (30–50 sqm) | $180 – $300 + GST |
| Large (50–80 sqm) | $300 – $500 + GST |
Per Square Metre Rate (Driveways): $3 – $6 per sqm + GST
Driveways that are heavily stained or have accumulated grime may fall toward the higher end of the pricing range, especially if the cleaning requires additional treatment, such as oil stain removal.
Average Water Blasting Costs in New Zealand (2026)
The cost of water blasting varies depending on several factors, including house size, number of storeys, and the specific areas being cleaned. Below is a breakdown of average pricing for water blasting services based on property size and the number of storeys.
By House Size:
| House Size | Estimated Cost (NZD) |
|---|---|
| 120 sqm | $249 – $269 + GST |
| 180 sqm | $279 – $299 + GST |
| 250 sqm | $320 – $350 + GST |
| 350 sqm | $399 – $430 + GST |
| 450+ sqm | $430 – $550 + GST |
By Number of Storeys:
| House Type | Typical Price Range (NZD) |
|---|---|
| Single-storey house | $249 – $320 + GST |
| Two-storey house | $299 – $399 + GST |
| Large or multi-level homes | $399 – $550 + GST |
For larger houses or properties with more than one storey, the cost tends to increase. This is due to the extra equipment and time needed to access higher areas, along with the additional safety measures involved.
By Specific Areas (Optional Services):
Water blasting prices can also vary depending on the specific areas that require cleaning. Optional services like roof washing, gutter cleaning, and driveway cleaning can increase the overall cost.
For example, driveway cleaning typically costs between $3 – $6 per sqm + GST, while roof washing may be priced separately.
Factors That Affect Water Blasting House Cleaning Costs
Several factors influence the cost of water blasting services in New Zealand. Understanding these factors can help you better estimate the price for your property and make informed decisions when hiring a service provider.
1. Surface Type
Different surfaces (e.g., brick, wood, painted walls, concrete) require different pressure levels and cleaning techniques. Harder surfaces may need more intense water pressure, which could increase the cost.
2. Property Condition
Properties with heavy build-up of grime, moss, or mould will require more time and effort to clean. If your house has not been cleaned in a while, expect to pay more for additional treatments.
3. Size of the Property
Larger homes or areas to be cleaned (such as driveways or decks) will cost more due to the increased surface area. This is typically calculated on a per-square-metre basis.
4. Number of Storeys
Multi-storey homes or properties with difficult access require more complex equipment (e.g., scaffolding or ladders) and additional safety measures, which raises the cost.
5. Additional Services
Optional add-ons like roof cleaning, gutter cleaning, and driveway washing will increase the total cost. These services may be priced separately or offered as part of a package deal.
6. Accessibility
If your property is difficult to access, such as narrow driveways or steep terrain, the cost may increase due to the extra time and equipment required to reach certain areas.
7. Location
The cost of water blasting may vary by region due to differences in labour rates, travel time, and the cost of living. In major cities like Auckland, prices may be higher due to increased demand and operational costs.
Understanding these factors can help you get an accurate quote and make sure you’re receiving the best value for your water blasting services.
Benefits of Regular Water Blasting
Regular water blasting offers several advantages for homeowners and property owners in New Zealand, keeping surfaces clean and well-maintained while preventing long-term damage. Here are some key benefits:
1. Maintains Property Value
Regular water blasting helps maintain the curb appeal of your property, which is essential for preserving its value. Clean exteriors create a positive first impression and can boost resale value.
2. Prevents Damage
Over time, dirt, moss, and mould can cause significant damage to exterior surfaces. Regular cleaning prevents these elements from deteriorating the condition of your walls, roof, driveway, and other surfaces.
3. Eco-Friendly
Water blasting uses only water under high pressure to clean surfaces, making it an environmentally friendly option. It minimizes the use of harmful chemicals, which is better for your family, pets, and garden.
4. Improves Hygiene
Water blasting eliminates dirt, mould, and allergens that can affect the air quality around your home. It’s a great way to keep your outdoor environment clean and safe, especially for people with allergies.
5. Saves Time and Effort
Compared to traditional scrubbing and cleaning methods, water blasting is much faster and more efficient. Professional services can complete large areas in a fraction of the time it would take with manual cleaning.
6. Enhances Aesthetic Appeal
Water blasting restores the original look of your property, bringing out vibrant colours and textures. Whether it’s your house, driveway, or deck, regular water blasting ensures your outdoor spaces look fresh and welcoming.
Common Mistakes About Water Blasting
Despite its effectiveness, there are several misconceptions and common mistakes people make when it comes to water blasting. Understanding these can help you avoid potential issues and ensure your property is properly cared for.
1. Assuming Water Blasting is Safe for All Surfaces
Not all surfaces are suitable for high-pressure cleaning. Water blasting can damage delicate materials like wood or older painted surfaces if the pressure is too high. Always ensure that the right pressure setting is used for each type of surface.
2. Underestimating DIY Water Blasting
While it may seem like an easy task, DIY water blasting can lead to uneven cleaning, surface damage, or even personal injury. Professional water blasting services use high-quality equipment and expertise to achieve the best results safely.
3. Ignoring the Need for Professional Services
Many homeowners attempt to save money by doing the job themselves or hiring cheap services. However, improper water blasting can lead to permanent damage or incomplete cleaning. Hiring a professional ensures the job is done right the first time, avoiding costly repairs in the future.
4. Not Checking for Hidden Damage
Water blasting is excellent for cleaning, but it can also reveal hidden damage, like cracks in walls or gutters. It’s important to address these issues before proceeding with the cleaning, as they can get worse when exposed to high-pressure water.
5. Expecting Immediate Results
While water blasting can quickly improve the appearance of your property, some stains or dirt may require additional treatments, especially if the buildup has been there for years. Patience and follow-up treatments might be necessary for stubborn areas.
How Often Should You Get Your House Water Blasted?
The frequency of water blasting depends on several factors, including the environment, the condition of your property, and your aesthetic preferences. Here’s a general guide on how often you should consider getting your home water blasted:
1. General Recommendation
For most homes, a bi-annual or annual water blasting is sufficient. This helps maintain clean exteriors and prevent build-up of dirt, mould, and moss, which can cause damage over time. Regular cleaning also helps to maintain curb appeal.
2. High-Humidity Areas (e.g., coastal regions)
If your home is located in a high-humidity or coastal area, you might need more frequent water blasting—around every 6 to 9 months. These regions tend to have higher mould and moss growth due to the moist environment.
3. Surfaces Exposed to Heavy Dirt and Grime
Areas like driveways, decks, and walkways that experience heavy foot traffic or exposure to oil, dirt, or rust may require more frequent water blasting—every 6 months to 1 year—to maintain their appearance and prevent staining.
4. After Major Weather Events
Following a storm or heavy rainfall, it’s a good idea to have your property water blasted. Heavy rain can wash dirt and debris onto surfaces, and water blasting will remove this build-up before it causes long-term stains or damage.
5. Roofs and Gutters
Roofs and gutters should be cleaned at least once a year to avoid moss and debris build-up that could lead to leaks or structural damage. If you notice moss or lichen growth earlier, an additional clean might be necessary.
Choosing the Right Water Blasting Service in New Zealand
When selecting a water blasting service, focus on the following factors to ensure quality results:
1. Experience
Choose a company with experience handling various surfaces and conditions. They should know how to adjust pressure to avoid damage while achieving effective cleaning.
2. Eco-Friendly Methods
Ensure the company uses environmentally safe practices, especially when handling waste and chemicals during the cleaning process.
3. Transparent Pricing
Look for clear, upfront pricing based on your property size and any additional services needed. Avoid companies with hidden fees.
4. Safety
The provider should follow safety protocols to prevent accidents and ensure proper handling of equipment.
5. Service Guarantee
A reliable provider will offer a satisfaction guarantee, ensuring the work is done correctly or rectified if needed.
Why Choose Sun SoftWash?
Sun SoftWash offers expert water blasting with eco-friendly methods, transparent pricing, and a satisfaction guarantee, ensuring top-quality service across New Zealand.
FAQs About Water Blasting
Is water blasting safe for my house?
Yes, when done correctly, water blasting is safe for most exterior surfaces. However, it’s essential to use the right pressure to avoid damaging delicate materials like wood or older paint.
Can water blasting damage my property?
Water blasting can damage surfaces if the pressure is too high or if used improperly. Hiring an experienced professional ensures that the right settings are used for your specific surfaces.
How do I know if my property is suitable for water blasting?
Most properties can benefit from water blasting, but it’s essential to assess the condition of your surfaces. If your home has delicate materials or old paint, consult a professional before proceeding.
How long does a water blasting session take?
The duration depends on the size of your property. A standard house wash can take anywhere from 1 to 3 hours, while larger properties or driveways may require more time.
Do you offer a guarantee for water blasting services?
Yes, reputable services like Sun SoftWash typically offer a satisfaction guarantee, ensuring the job is completed to your expectations or revisiting the site to correct any issues.
