An honest, no-spin guide to what damp work actually costs in Sydney — damp-proof course injection, salt-resistant replastering, subfloor ventilation and more — plus the factors that move the price. Then get your own exact, fixed figure with a free inspection.
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The honest answer to "how much does rising damp treatment cost in Sydney?" is that it depends on your specific wall — its length, its condition, and how much plaster has to come off. Anyone who quotes a flat price over the phone is guessing. What we can do is be completely clear about what goes into the price, so you understand exactly what you're paying for — and then give you a fixed quote after a free inspection. Here's what shapes the cost of each part of the job.
| Work | What's involved | What drives the cost |
|---|---|---|
| Damp inspection | On-site moisture testing & diagnosis | Always free with us — no charge to diagnose |
| Damp-proof course (DPC) injection | New chemical DPC through the wall | Length of wall, single vs double brick, access |
| Salt-resistant replastering | Strip salt-damaged plaster & re-render | Area to replaster, salt damage, heritage finish |
| Subfloor ventilation | Fans, ducting & vents to dry the subfloor | Subfloor size, number of fans/vents, access |
| Mould remediation | Safe removal + fixing the moisture source | Varies by extent |
| Waterproofing | Basements, walls, balconies, retaining walls | Varies by area & method |
Plenty of Sydney specialists charge just to look. We don't, because we'd rather earn your trust with an honest diagnosis and a fixed-price quote you're under no obligation to accept. If it turns out you don't have rising damp at all — maybe it's a leak, condensation or a subfloor issue — we'll tell you that too. Start with a free damp inspection.
Rising damp never improves on its own. Left alone it keeps wicking up the wall, destroying more plaster, skirting and structural timber and feeding mould — so the longer you wait, the bigger the bill. Treating it early, properly, and with the right breathable render is almost always the cheaper path in the long run, and it protects your home's value.
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Read our Google reviews →It depends on your specific wall — its length, whether it's single or double brick, how far the salt has spread, and how much replastering is needed. Because those vary so much between homes, a flat phone quote is guesswork. We give you a fixed price upfront after a free on-site inspection, so you know the exact figure for your home before any work begins.
Many Sydney damp specialists charge for an inspection or report. Ours is free — you get an honest diagnosis and a fixed-price quote with no obligation.
The main factors are the length of wall affected, whether the wall is single or double brick, how far the salt damage has spread, how much plaster needs replacing, access to the area, and whether it's a heritage building needing lime render.
No. Rising damp gets worse and more expensive over time as it destroys more plaster, skirting and structural timber and feeds mould. Treating it early is almost always cheaper than waiting.
It depends on the size of the subfloor, how many fans and vents are needed and the system design. We give a fixed price after a free assessment.
A free inspection gives you the exact fixed figure for your home, with no obligation.
From the Inner West to the Northern Beaches, the Eastern Suburbs to Penrith and the Blue Mountains — Rising Damp Sydney treats rising damp, mould, subfloor moisture and waterproofing problems right across the greater Sydney region. Free inspection, fixed price, same team from first call to final coat.
Sydney's trusted rising damp, mould & subfloor specialists — licensed, insured and lifetime guaranteed.