Should You Pressure Wash Your House Before Selling?

For most homes, yes. If the exterior has visible mould, streaking, stained concrete or green growth, a professional clean before listing is usually worth doing. It is relatively quick, it costs far less than repainting or resurfacing, and it improves the first thing buyers see in photos and in person. The exception is a home that is already clean, or one with problems that cleaning cannot fix.

What exterior cleaning actually does for a sale

Cleaning does not change what a house is. It changes how clearly buyers can see it. A few specific things tend to improve:

• Listing photos: Clean render, bright glass and an even driveway look better in the hero shot that decides whether someone clicks.
• First impressions at inspections: Buyers walking up a clean path to a clean front door start the inspection in a better frame of mind.
• Perceived maintenance: Grime and mould read as neglect, and buyers who think a home has been neglected tend to look harder for other problems.
• Safety on the day: Slippery, algae-covered steps and pool surrounds are a real hazard during a crowded open home.

You will see pre-sale cleaning marketed with specific dollar figures for how much it adds to a sale price. Treat those with caution. Sale prices depend on location, the market and the property itself, and nobody can honestly promise a number. What a good clean reliably does is remove a reason for buyers to mark a home down in their heads.

When pressure washing before selling is worth it

• Walls or eaves have dark streaks, mould or cobwebs, common on shaded sides of Sydney homes.
• The driveway or front path has tyre marks, oil stains or general grime.
• Pavers, sandstone or pool surrounds have gone green or black.
• The roof has moss or lichen that is visible from the street.
• The home has not had an exterior clean in several years.

Before

After

Before

After

When it is not the answer

Be realistic about what cleaning can do. It will not fix peeling or chalky paint, cracked concrete, rotten timber or broken roof tiles. On old, failing paint, washing can make flaking more obvious rather than less. If paint is the main problem, talk to your agent about whether a repaint of the most visible areas is the better spend, and clean the surfaces around it.

It is also worth skipping surfaces that are already clean. A good pre-sale clean is targeted at what buyers will notice, not every square metre of the property.

Pressure washing versus soft washing

"Pressure washing" gets used for all exterior cleaning, but the method should change with the surface. Hard surfaces like concrete driveways can take controlled pressure. House walls, painted surfaces and roofs should be soft washed, which uses low pressure and a cleaning solution to kill and lift mould without damaging the surface. Sandstone and timber need a gentle approach too. Using high pressure on the wrong surface right before a sale can leave wand marks or damage that is harder to hide than the dirt was.

DIY or hire a professional?

A hired pressure washer can handle a small concrete area, but a full pre-sale exterior is a different job. Walls, second storeys and roofs involve ladders and heights, delicate surfaces are easy to mark, and uneven technique can leave stripes on a driveway that show up clearly in photos. With a listing date approaching, most sellers would rather have it done once, properly, with a fixed price.

Our approach

AW Pressure Washing scopes pre-sale exterior cleaning around what your buyers will actually see and your listing timeline. We will tell you if a surface is not worth cleaning, or if a stain is likely to fade rather than disappear, before we start. Every job comes with a free, fixed quote. See our pre-sale exterior cleaning checklist for what to include and when to book.

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