Trenching and Drainage Preparation in Toowoomba
Trenches and drainage groundwork need to fit the plans, site levels and what is already underground. Send drawings, the site location and relevant service information so excavation and preparation can be discussed, separate from pipe installation or connections.



A trench is not a drainage system.
Trenching, excavation and backfilling are earthworks. Pipework, connections and plumbing are separate work, so say which part you are asking about.
Earthworks to clarify
Is the enquiry for excavation of a trench, preparation around a documented drainage route, backfilling or reinstatement? Tell us which of these you need quoted.
Separate from trenching
Pipe supply, installation, licensed connections, design, approvals and certification are separate from a trenching enquiry. Tell us who is performing each part.
Known constraints
Existing underground services, access to the proposed route, spoil handling and nearby structures all need to be raised before the work can be defined.
Bring the right information to the conversation.
These are the details that help when you enquire.
Plans and service records
Available drawings showing the intended route, levels and the proposed drainage or trench purpose. Include any information you have about existing underground services.
Site and access
The address, photographs, how the proposed work area is reached and any known physical constraints.
Other parties
Who has designed the work, who will undertake pipework or connections, and who is responsible for locating services and approvals?
Define the interface before the excavation.
A drainage route can sit alongside site preparation, but excavation and licensed work are not interchangeable.
Ask who supplies the approved layout and levels, who identifies existing services, who installs or connects the drainage, and what happens to excavated material. Backfill and reinstatement should be expressly included or excluded in the agreed scope.
For broader groundworks context, see the earthmoving overview.
Before you enquire.
Not sure what information you need? Start with what you know about the job.
Can BaseUp install stormwater pipework?+
Start by describing the job. Excavation and preparation can be discussed, while pipe supply, installation, connections and any licensed plumbing work need to be identified and arranged separately.
Who locates existing underground services?+
Supply any plans or service information you already have, and raise this question before any work is scoped. Locating existing services should be settled before anyone excavates.
Is backfilling included?+
Backfilling can be part of a trenching job. Include the reinstatement you expect in your enquiry so the boundary of the work can be discussed.
Can you design the drainage layout?+
Drainage design usually comes from your designer or engineer. Provide the relevant drawings and tell us who is responsible for levels, design, approvals and connections for your particular job.
Start with the details.
Give us the basics first. You can add plans, intended use, timing and site notes in the next step.
