How much does damp proofing cost?

Rising damp treatment in Australia typically costs $180–$380 per linear metre of wall, with most jobs landing between $2,000 and $6,000.

Typical price band

$3,500typical

$500 low$12,000 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

— 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.

— 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.

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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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