Hiring a pressure washing service: what to ask, what to avoid
Two pressure washing quotes for the “same” job often aren't the same job at all — the gap is usually scope: what's included, what's billed as an extra, and what you confirmed before you booked. Here's how to tell a fair deal from an expensive one, grounded in real pricing data.
The one that catches most people out
Too much pressure on timber
Damages softwood. Ask about soft-wash.
Questions to ask a pressure washing service
Most overcharging hides in the scope, not the headline price. These pin it down before you commit.
- 1
Does your quote include sealing/coating, or is that extra?
If it's extra, expect around $5–15/sqm.
- 2
Is chemical treatments part of the price, or charged separately?
- 3
Will I be charged extra for roof cleaning?
- 4
Can you put the full scope and the final price in writing before any work starts?
Scope disputes are the single most common complaint. A written list is what protects you.
- 5
Is GST included in the price you have quoted?
A sole trader under $75k turnover can legally leave GST off, which makes a quote look about 10% cheaper than a registered business for the same work.
Three checks that take five minutes
Check the licence
For licensed trades, ask for the licence number and confirm it on your state's fair-trading or licensing site before you book. Unlicensed work can void your insurance.
Confirm they're insured
Public liability cover protects you if something gets damaged on the job. If an operator can't confirm it, that's a red flag.
Insist on a written quote
A fair quote itemises the scope, names what's excluded, and states whether GST is included. Verbal quotes are where disputes start.
Other mistakes worth avoiding
Not sealing after
Freshly cleaned concrete stains faster.
What's usually included, and what costs extra
Usually included
- ✓Pressure clean specified areas
- ✓Basic mould removal
Usually charged extra
- +Sealing/coating · $5–15/sqm
- +Chemical treatments
- +Roof cleaning
What pushes the price up: large area, heavy mould/algae, sealing after, multi-storey.
Pressure Washing questions, answered
How often?+
Seal after?+
Already have a quote?
Check it against real pressure washing prices in 30 seconds, then walk in knowing exactly what to ask.