What are typical damp proofing prices in Australia?

Single affected wall: $900 to $2,200. Chemical DPC injection along one damp wall (~5 metres) of a single-skin brick room. Several walls plus re-plastering: $3,500 to $7,500. Injecting around 12 metres of double-brick wall and replacing the salt-damaged plaster afterwards. Whole-home treatment: $8,000 to $16,000. Full perimeter injection of an older double-brick home with extensive re-rendering and improved subfloor ventilation.

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How much does damp proofing cost?

Q: What affects the cost of damp proofing in Australia?

Metres of wall affected: Treatment is priced per linear metre, so the length of damp wall is the core driver. Wall construction: Double-brick and stone walls take longer to drill and use more injection cream than single-skin brick. Re-plastering scope: Hacking off and replacing salt-damaged plaster can double the total cost. Cause of the damp: If the real problem is drainage, leaking pipes or bridged damp courses, that fix comes first. Access & finishes: Working around kitchens, built-ins or external paving that hides the wall base adds labour.

Rising damp treatment in Australia typically costs $180–$380 per linear metre of wall, with most jobs landing between $3,500 and $7,500.

Typical price band

$3,500typical

standard job $3.5k–$7.5k

$500 low$16,000 high

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Real-world examples

Single affected wall$900 – $2,200

Several walls plus re-plastering$3,500 – $7,500

Whole-home treatment$8,000 – $16,000

What affects the price

— Metres of wall affected. Treatment is priced per linear metre, so the length of damp wall is the core driver.

— Wall construction. Double-brick and stone walls take longer to drill and use more injection cream than single-skin brick.

— Re-plastering scope. Hacking off and replacing salt-damaged plaster can double the total cost.

— Cause of the damp. If the real problem is drainage, leaking pipes or bridged damp courses, that fix comes first.

— Access & finishes. Working around kitchens, built-ins or external paving that hides the wall base adds labour.

Tips before you post

— Get an independent diagnosis before committing — condensation and leaks are often misdiagnosed as rising damp.

— Ask for a written warranty on the new damp course; 10–20 years is standard for quality systems.

— Don't re-plaster too soon — walls need weeks to months to dry out after treatment.

Beyond the price: Fixing rising damp: finding the right specialist for the job

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Find damp proofing near you

Damp Proofing in Sydney, NSW Damp Proofing in Melbourne, VIC Damp Proofing in Brisbane City, QLD Damp Proofing in Perth, WA Damp Proofing in Adelaide, SA Damp Proofing in Canberra Central, ACT Damp Proofing in Hobart, TAS Browse all areas →

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Indicative range only, not a quote. Get quotes from local tradies for an exact price. Last updated 13 July 2026.

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