Why this matters for Melbourne properties
This Pricing article is written for Melbourne owners and managers who need more than a quick blast. Pressure Cleaning jobs in our city require a surface diagnosis before any cleaning starts.
In Melbourne, everything from growth corridor new-build mortar smear to inner-suburb heritage brick has its own cleaning risk profile. The right method, chemistry and pressure keep the surface safe and the result lasting.
Red flag 1: No line-itemised scope
A quote that says "full exterior clean" or "pressure clean as required" without listing specific surfaces, methods and inclusions is not a quote — it is an intention. Without a line-itemised scope, there is no basis for price comparison, no agreed definition of what constitutes completion, and no contractual protection if surfaces are missed or damaged. Every reputable Melbourne pressure cleaning contractor can itemise their scope before they start; a refusal or inability to do so is the earliest and most reliable warning sign.
Red flag 2: No mention of insurance
The minimum insurance for any Melbourne exterior cleaning contractor is public liability (strata and commercial sites usually require a higher level than homes) plus injury cover for any person working on site. A contractor who cannot immediately produce current insurance certificates when asked either does not carry them or carries them at inadequate limits. On strata and commercial properties, the managing agent is obligated to sight insurance certificates before any contractor enters common areas — a contractor who pushes back on this request is not ready for the work.
Red flag 3: No discussion of runoff management
EPA Victoria guidelines are clear: detergent, chemical-loaded water and contaminated runoff cannot enter the stormwater system. A contractor who does not ask about drain locations, does not mention containment and cannot describe how they manage runoff on your site either does not understand the rules or does not intend to follow them. Both are problems — one creates legal exposure for the property owner if a neighbour complains about runoff, and both indicate a contractor whose other site practices are likely equally casual.
Red flag 4: No mention of surface assessment
Different surfaces need different pressure settings, chemistry and technique — render needs soft wash, brick needs diluted acid, exposed aggregate needs specific nozzle selection, and sandstone or limestone cannot tolerate acid at all. A contractor who quotes a flat rate for "all exterior surfaces" without asking about surface types is pricing a generic blast regardless of substrate. This approach damages render, etches stone and can void manufacturer warranties on sealed surfaces. The first question a specialist asks is what surfaces are being cleaned and what is on them.
Red flag 5: Quote turnaround in minutes
An accurate quote for a property that has not been inspected takes time. A contractor who responds with a price within five minutes of receiving a brief message — without asking for photos, surface types, access details or suburb — is guessing or defaulting to a price they will adjust upward on the day. Photo-led quoting is now standard in Melbourne; any operator who cannot quote off photos is either too new or too busy to serve your job well. If the price feels suspiciously low without any surface discussion, it probably is.
Red flag 6: Pressure as the only solution
A contractor who responds to every cleaning problem with higher pressure does not understand that pressure is a rinse step, not a cleaning step for most exterior surfaces. Chemistry, dwell time and the correct nozzle do the cleaning; pressure moves the residue. Contractors who default to turbo nozzles and maximum PSI cause surface damage — etched exposed aggregate, stripped render, lifted paver sealer, eroded mortar joints — that costs more to repair than the cleaning itself. Ask what chemistry and dwell time they plan to use before confirming any booking.
Red flag 7: No photo report at the end
A photo report at the conclusion of a cleaning job is standard practice for reputable Melbourne operators — it documents the result, provides before-and-after evidence, and creates a maintenance baseline for future scheduling. Contractors who do not offer a photo report either do not have a systematic quality process or are not confident the result will stand comparison with the before state. For strata and commercial jobs, a photo report is typically a requirement in the scope of works; for residential jobs, it is a professional standard that indicates the contractor takes quality seriously.