Civil plumbing questions, answered directly

Every answer below reflects how the work runs in South East Queensland: who owns which pipe, which authority approves what, and what decides the price of a job before anyone quotes it.

The basics Approvals Cost & timing Trade & site

The basics

What is a civil plumber?

A civil plumber installs and maintains the underground water, sewer, drainage and stormwater infrastructure that connects buildings to public networks. The work sits between a domestic plumber's fixtures and a civil contractor's earthworks, and it carries its own licensing, testing and inspection requirements.

What is the difference between a civil plumber and a regular plumber?

A domestic plumber handles fixtures, hot water systems and pipework in and around a building. A civil plumber handles what is buried outside it — mains, sewers, house drains and stormwater networks — which means excavation plant, authority approvals and testing regimes come with the job.

Who owns the sewer pipe on my property?

The property owner maintains the sanitary drain from the building's fixtures to the connection point on the authority's main. The main and its connection branch belong to the water authority. A camera inspection establishes which side of that line a defect sits on, which decides who pays for the repair.

What is a lawful point of discharge?

It is the location council accepts stormwater leaving a property, usually the kerb, a council drainage pipe or an inter-allotment drainage easement. Discharging onto a neighbouring property instead is the most common cause of drainage complaints and council enforcement. Stormwater detail.

Are you QBCC licensed?

Yes. Plumbing and drainage work is carried out under QBCC occupational licence PD21658, held by Jamie Gary Moore in both the plumber and drainer classes and current to 1 September 2027. The number can be checked on the QBCC licence register before you engage us.

Do I need a civil plumber or an excavation contractor?

Any job where the trench exists to carry water, sewer or stormwater needs a licensed plumber to install and certify the pipework. Engaging one contractor for both removes the gap where an excavator digs to the wrong depth or grade for the pipe that follows.

Approvals & compliance

Do you handle council and water authority approvals?

Yes. Connection applications, plumbing approvals, road opening permits and inspection bookings are lodged with the relevant authority — Urban Utilities, Logan Water, Redland City Council or City of Gold Coast — as part of the scope. Which authority applies where.

Does drainage work need council approval in Queensland?

Plumbing and drainage work falls into permit-exempt, notifiable or compliance-assessable categories under Queensland legislation. Altering, extending or installing sanitary drainage generally requires approval before work starts and a compliance certificate at completion. We identify the category and lodge the paperwork.

What testing is done before a trench is backfilled?

Water mains are hydrostatically pressure tested, disinfected and flushed. Sewer and drainage lines are tested and CCTV recorded with invert levels picked up. Compaction testing follows where the surface above carries traffic. Records are issued with the handover documentation.

Do you contact Before You Dig Australia?

Every excavation starts with a Before You Dig Australia enquiry, then the plans are verified on the ground with locating equipment. Live services crossing the alignment are exposed by hand or vacuum excavation before any machine work near them.

Cost & timing

How much does civil plumbing work cost?

Trench depth, ground conditions, existing services in the alignment, surface reinstatement, site access and authority requirements set the price — not pipe length. Two identical runs on different sites carry different costs for those reasons, so we quote after a site inspection with inclusions and exclusions written down. See the cost drivers.

Why does depth change the price so much?

Deeper trenches need support systems, larger plant and more spoil handling, and entry becomes a controlled activity with its own permits and crew requirements. The volume of material removed also grows faster than the depth itself.

How long does a connection or repair take?

Construction of a single connection or a section repair is typically one to three days on site. Authority approvals, inspection bookings and traffic management permits take longer than the digging, which is why we lodge them before booking plant.

Is rock included in your quote?

Rock is either included to a nominated depth or priced as a measured rate, and the quote says which. Redland and western Brisbane sites make this the most common variation in our work, so it is settled before the machine arrives.

Will my insurance cover a collapsed drain?

That depends on your policy and the cause of failure. Insurers generally want camera footage, the location and depth of the defect and a written scope of repair, which we provide as standard so your claim rests on evidence.

Trade & site

Do you work as a subcontractor for builders and civil contractors?

Yes, and it is the majority of our work. Wet services under a head contract cover trenching, water mains, sewer, stormwater and reinstatement. Insurance details, SWMS and plant records go across before mobilisation so inductions are not held up.

Can other plumbers hire you for the machine work?

Plumbing businesses engage us for deep trenching, mains connections and excavation while keeping the client relationship. Scope, hold points and site access are agreed in writing first, and we stay off your client's radar unless you want us in front of them.

What do you need from me to quote?

The site address, approved hydraulic or civil drawings if they exist, the surfaces along the alignment and any access restrictions. For repairs, a description of the symptom and when it started is enough to arrange an inspection.

Do you restore driveways, paths and turf?

Reinstatement is quoted with the works and the finish is named in writing, whether that is concrete, asphalt, pavers or turf. Backfill is compacted in layers so the surface holds its level rather than sinking a season later.

Which areas do you service?

Brisbane, the Redlands and Bayside, Logan, Ipswich, the Gold Coast, the Sunshine Coast and Toowoomba, worked from Capalaba. Projects beyond that radius are assessed on scope and duration. Full service area detail.

Question not covered here?

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