Water tank and stormwater detention costs in Perth
Start by separating a rainwater tank for reuse from a stormwater detention system. The model below is for a detention-tank job; it is not a quote for every drainage design or for a soakwell.
Stormwater detention tank — modelled job scope: $3,280–$9,840. Modelled estimate, not a measured local market range.
$3,280–$9,840
Midpoint estimate: $6,560 per job
Perth · Stormwater Detention Tank
Modelled estimate, not calculated from consumer submissions. GST included; city, suburb and materials differences are assumptions rather than observed prices. Confirm scope and inclusions with the provider.
How this figure is put together
Modelled estimate; verified submission count unavailable. These figures are not calculated from consumer submissions.
Modelled estimate. City, suburb and materials factors are assumptions, not observed price differences. Confirm GST, units and inclusions with the provider.
GST is included in this price basis.
No verified observation date for this model.
Existing guide assumptions; not a measured market sample or verified rate card.
Price the job you actually need
These are separate modelled job estimates for Perth. They are not additional charges to sum together, and are not substituted for the evidence record above.
$3,280–$9,840 / job
Modelled estimate. Confirm the exact scope, inclusions and any applicable licence or contract requirements with the provider and the official authority before booking. See the official guidance links on this page.
GST included in this model.
$1,476–$3,690 / job
Modelled estimate. Supply and install a 5,000 litre tank on a prepared base with tap and overflow
GST included in this model.
$2,050–$5,330 / job
Modelled estimate. Connect a rainwater tank to household fixtures with pump, changeover valve and backflow device
GST included in this model.
Ask before accepting a quote
- Is the objective rainwater reuse, temporary stormwater detention, or another drainage solution?
- What tank capacity, outlet arrangement, excavation, base and access does the design require?
- Who is responsible for checking the site requirements with the relevant local authority?
Keep these scopes separate
- Do not compare a tank-only supply price with a complete installed drainage system.
- Ask whether excavation, spoil removal, reinstatement, pipework, electrical work and design are included.
Primary guidance for the scope
These sources explain the work; they do not validate FairCost’s modelled prices or approve your property’s design.
Qualifications and local requirements
Use the official regulator links for the exact work and location. FairCost does not assert that one general rule covers every job.
Who licenses this work
Plumbing and drainage, state by state
On a small screen, scroll across to see every column.
| State | Regulator |
|---|---|
| NSW | NSW Government – contractor qualificationsConfirm the licence, registration, contract and certificate requirements for this exact job with the official authority for NSW. This guide does not assert a dollar threshold or an exemption. For permits, ask the relevant council; for consumer-contract questions, consult the ACCC guidance. |
| VIC | Building and Plumbing CommissionIn Victoria, a plumbing compliance certificate is required when the total work value exceeds $750, including materials, appliances, labour and GST. Specified gas, below-ground drainage and cooling-tower work requires one regardless of value. Check the BPC list for the exact scope and exceptions. |
| QLD | Queensland Building and Construction CommissionConfirm the licence, registration, contract and certificate requirements for this exact job with the official authority for QLD. This guide does not assert a dollar threshold or an exemption. For permits, ask the relevant council; for consumer-contract questions, consult the ACCC guidance. |
| WA | Building and EnergyConfirm the licence, registration, contract and certificate requirements for this exact job with the official authority for WA. This guide does not assert a dollar threshold or an exemption. For permits, ask the relevant council; for consumer-contract questions, consult the ACCC guidance. |
| SA | Consumer and Business ServicesConfirm the licence, registration, contract and certificate requirements for this exact job with the official authority for SA. This guide does not assert a dollar threshold or an exemption. For permits, ask the relevant council; for consumer-contract questions, consult the ACCC guidance. |
| TAS | Consumer, Building and Occupational ServicesConfirm the licence, registration, contract and certificate requirements for this exact job with the official authority for TAS. This guide does not assert a dollar threshold or an exemption. For permits, ask the relevant council; for consumer-contract questions, consult the ACCC guidance. |
| ACT | Access CanberraConfirm the licence, registration, contract and certificate requirements for this exact job with the official authority for ACT. This guide does not assert a dollar threshold or an exemption. For permits, ask the relevant council; for consumer-contract questions, consult the ACCC guidance. |
| NT | Plumbers and Drainers Licensing BoardConfirm the licence, registration, contract and certificate requirements for this exact job with the official authority for NT. This guide does not assert a dollar threshold or an exemption. For permits, ask the relevant council; for consumer-contract questions, consult the ACCC guidance. |
Rules without a checked source have been replaced with official pointers. Qualified trade review is pending; no universal licence exemption is asserted.
How much confidence should you place in the number?
A model is a planning aid. A matched observed cohort describes the submissions or bookings it contains, not a random sample of everyone in your city. A higher or lower quote may reflect a different scope.
More services in Perth
This service in other cities
- Water Tanks & Stormwater in Sydney$3,000–$15,000Modelled estimate
- Water Tanks & Stormwater in Melbourne$2,760–$13,800Modelled estimate
- Water Tanks & Stormwater in Brisbane$2,550–$12,750Modelled estimate
- Water Tanks & Stormwater in Adelaide$2,340–$11,700Modelled estimate
- Water Tanks & Stormwater in Canberra$2,790–$13,950Modelled estimate
- Water Tanks & Stormwater in Hobart$2,460–$12,300Modelled estimate
- Water Tanks & Stormwater in Darwin$2,640–$13,200Modelled estimate
- Water Tanks & Stormwater in Gold Coast$2,490–$12,450Modelled estimate
- Water Tanks & Stormwater in Toowoomba$2,340–$11,700Modelled estimate
- Water Tanks & Stormwater in Ballarat$2,520–$12,600Modelled estimate
- Water Tanks & Stormwater in Bendigo$2,490–$12,450Modelled estimate
- Water Tanks & Stormwater in Townsville$2,550–$12,750Modelled estimate
- Water Tanks & Stormwater in Mackay$2,760–$13,800Modelled estimate
- Water Tanks & Stormwater in Albury-Wodonga$2,400–$12,000Modelled estimate