Sump Pump Installation Cost Calculator
Estimate the cost of a sump pump installation. The scale of the job and how easy the site is to access are the main cost drivers, along with any making-good afterwards.
Your sump pump installation details
Your estimate sits within the typical range.
A new sump pit means digging the pit, setting the pump and running a discharge line and power, far more than swapping a pump into an existing pit where everything is already there.
If a pump failure would flood something valuable, a battery backup or twin-pump setup is cheap insurance, mains-only pumps fail in the storms that cause the blackouts. Make sure the discharge runs to legal stormwater, not back into the ground.
💰 Ways to save
- Get at least two or three quotes, trade rates and mark-ups vary widely.
- Clear and prepare the area yourself where you safely can, you are paying tradie rates for any time spent shifting your gear.
- Bundle related jobs into one visit so you pay the call-out and setup once.
How we estimate this
A sump pump installation in Australia typically costs around $700 to $1,200 in 2026 to replace an existing pump, rising to $1,500 to $4,000 for a new pit and pump or a twin-pump backup system, plus battery backup and discharge line.
Pricing reviewed: November 2026.
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Pricing reviewed November 2026. Indicative Australian costs, not a quote.
Understanding sump pump installation costs in Australia
A sump pump installation in Australia typically costs around $700 to $1,200 in 2026 to replace an existing pump, rising to $1,500 to $4,000 for a new pit and pump or a twin-pump backup system, plus battery backup and discharge line.
A sump pump removes water that collects in a pit under or beside a building. Replacing a pump is cheap, a new pit needs digging plus a discharge line and power. Backup systems cost more but protect against failure during storms.
Frequently asked questions
How much does a sump pump installation cost in Australia?
Roughly $700 to $1,200 in 2026 to replace a pump, and $1,500 to $4,000 for a new pit or a twin-pump backup system, plus battery backup and a discharge line.
Do I need a backup sump pump?
If a failure would flood something valuable, yes, a battery backup or twin-pump setup is worthwhile, because mains-only pumps fail during the storm-driven blackouts when you need them most.
Are you a tradesperson / contractor?
Everyone on this page is working out what sump pump installation costs because they are ready to hire. Put your business right beneath the calculator, in your state, so you are who they find. From $50/mo.