Before You Dig Australia vs a Private Utility Locator: Why You Need Both

Before You Dig Australia and a private utility locator do two different jobs. Before You Dig Australia sends you the asset owners' plans for free. A utility locator in Sydney then finds where those services really are on your site, plus the private ones no plan shows. Treating the plans as the locate is the most common reason people hit a pipe they thought they had avoided.

What Before You Dig Australia gives you

Before You Dig Australia, formerly Dial Before You Dig, is a free national referral service. You enter the address and the type of work, and each registered asset owner in the area sends back plans and conditions for working near its network. In Sydney that typically means the electricity distributor, the gas network, Sydney Water, and the communications carriers.

It is the right first step for every job. It tells you who owns what near your dig, and it brings the asset owners' duty-of-care conditions with it. If a high-pressure gas main or a major electricity feeder is nearby, the response will say so and may require the owner's representative on site.

What the plans do not tell you

The plans are records. They are not a survey of your site, and every asset owner says as much in the cover letter. In practice the gaps are these:

• Position is indicative. Lines are often drawn schematically. A service shown one metre from the boundary can be three.
• Depth is rarely shown. Where it is, it reflects the day of installation, not the ground level after decades of resurfacing.
• Private services are missing. Anything on your side of the meter or connection point is yours and is not recorded.
• Not every owner is a member. Some private networks and older assets do not appear at all.
• Abandoned services stay in the ground. Records may show them, or not.
• Plans expire. Responses are only current for a limited period, so plans from an earlier stage of the project need to be requested again.

In the language of AS 5488, a Before You Dig plan is quality level D: records only, unverified.

Private services are the ones that get hit

On residential and commercial lots, the strike is usually a private service. The sewer line from the house to the boundary. The stormwater running under the driveway. The power feed to the garage or pool. The gas line to the barbecue. Irrigation, data and security cabling. None of it appears on a Before You Dig response, because none of it belongs to an asset owner.

On a commercial site it gets worse. Car parks carry lighting circuits, fire services, private hydrant mains and trade waste lines that were installed by different contractors over different decades, with drawings that may or may not survive.

What a private utility locator adds

A locator takes the plans as the starting point and then checks the ground. Pit lids are lifted. Services are traced with electromagnetic equipment by connecting a signal directly where it is safe to do so, or by induction where it is not. Ground penetrating radar is run across the area to pick up what the electromagnetic method cannot. The results are marked on the surface and, if needed, surveyed.

That is utility locating to QL-B. Where an exact depth matters, the service is exposed by vacuum potholing to reach QL-A.

One caveat belongs here. A locator cannot guarantee that everything has been found either. Non-conductive pipes with no tracer wire, very deep services and poor radar ground all limit detection. What a professional gives you is a far smaller unknown, and a written note of what could not be confirmed.

Who is responsible if a service is hit

The person managing the excavation is. SafeWork NSW guidance on excavation work expects underground services to be identified before digging and current plans to be kept on site. Holding a Before You Dig response shows you asked. It does not show you verified, and asset owners recover repair costs from the party that caused the damage.

For anyone running a business, the practical position is simple: plans plus a documented locate is the defensible standard. Plans alone are not.

When the plans alone might be enough

Restraint is worth stating. If you are digging by hand, shallow, in an area the plans show as clear, and nothing private runs through it, a careful dig after reading the plans is reasonable. Planting a garden bed does not need a locator.

Call one when any of these apply:

1. You are using a machine, auger, bore or driven posts.
2. The plans show any service within a few metres of the work.
3. The property has outbuildings, a pool, or services you did not install.
4. The site is commercial, industrial or in an older suburb.
5. A principal contractor or asset owner requires a certified locate.

What to look for in a locator

Accreditation is a useful filter. A Before You Dig Australia Certified Locator has been assessed against the industry standard. Some asset owners keep their own lists, such as the Telstra Accredited Plant Locator scheme, and government work may require specific accreditation.

LCG Locating is a Before You Dig Certified Locator, is accredited with Transport for NSW and Sydney Water, and reports to AS 5488-2022. For design work the locate can be extended into a utility survey and mapping deliverable. Whoever you use, ask what methods they will run and what you will receive in writing.

Next step

Lodge the Before You Dig enquiry today, since it costs nothing. Then send the plans and a sketch of your work area through our contact page and we will tell you whether the job needs a locate and what level.