Dowds Pipe and Cable | Underground Utility Locating Services
The Trusted Choice for 25 Years in Utility Locating Services
Why Customers Choose Dowds Pipe and Cable Locating Services
Over 25 Years of Experience
Advanced Technology Solutions
100% Certified Accredited & Insured
Free No Obligation Quotes
Responsive Technology Solutions
Detailed Comprehensive Reporting
Welcome to Dowd’s Pipe and Cable Locating
At Dowd’s Pipe and Cable Locating, we specialise in accurate, professional utility locating services across Wollongong, Sydney, the Illawarra, the South Coast, and the Southern Highlands — including Nowra, Campbelltown, Moss Vale, Bowral, Vincentia, and Ulladulla. As a family-owned and locally operated business, we’ve been helping builders, contractors, and homeowners protect underground assets for more than 25 years.
Digging without accurate knowledge of what lies beneath can lead to costly damage or injury. That’s why our utility locating specialists use the latest ground penetrating radar (GPR), electromagnetic detection, and CCTV inspection technology to pinpoint underground services before you break ground. Whether it’s electrical cables, water mains, stormwater pipes, or communication conduits, we locate it safely and efficiently.
Precision. Safety. Reliability.
We hold current industry accreditations, follow strict safety protocols, and maintain up-to-date training to ensure every project meets Australian standards. Our reputation for quality workmanship, integrity, and genuine customer service is what sets us apart — we never cut corners and always prioritise your site’s safety.
Our mission is simple: to raise awareness of underground asset safety and deliver the most accurate utility locating services available. By identifying what’s below the surface before excavation, we help protect your people, your project, and the wider community from unnecessary risks and costly repairs.
Our Services
Don’t start blindly digging during your next residential or commercial project without knowing exactly where your pipes are located. Let our team of experts use their pipe locating technology to identify any pipework that lies below the surface.
Our thermal imaging specialist, Declan, is a certified and accredited Thermographer. If you’re worried that your residential or commercial property has a problem which is hard to identify, check out our thermal imaging page to learn more about how we can help you.
If you’re about to commence any digging or construction work on your residential or commercial property, don’t risk accidentally cutting into cable and being left with an expensive repair bill. Our team will locate all cables so you can enjoy an incident free build.
For any project, it’s vital to plan ahead; for coring, drilling or cutting, even more so! Rely on our ground penetrating radar to map out your underground utilities. Whether it’s a concrete slab or asphalt road in the way, we’ll see through it! This advanced, non-invasive technology uses radio waves to create an image of the subsurface. We can identify conduits, steel reinforcing, cables and more. Carry out your work confidently.
Detecting what’s beneath the surface is critical before drilling or cutting. Concrete scanning identifies embedded objects such as rebar, conduits, post-tension cables and voids using non-destructive ground-penetrating radar to prevent structural damage.
Left unchecked, leaky pipes can cause structural damage to your home or business, as well as high water bills. However, not all leaks are a straightforward fix—some occur under concrete slabs, paving and foundations. If you suspect an inaccessible leak, contact our professionals! We’re equipped with advanced technology and the right tools to carefully detect and repair leaks.
Got a blocked pipe? Our qualified plumbers accurately detect and diagnose blockages/breaks using CCTV technology. During a CCTV pipe inspection, we’ll feed a camera down your pipelines and capture images inside. This will help us determine the best course of action to remedy the situation. Gain peace of mind regarding the integrity of your plumbing systems.
Underground Utility Locating Services: Complete Guide
As the owner of Dowd’s Pipe and Cable Locating, I’ve seen firsthand how critical underground utility locating services are for keeping projects across Wollongong, Sydney and the Southern Highlands safe and on schedule. Every year, countless property owners, builders, and civil contractors face costly delays and safety hazards because underground services weren’t properly identified before digging began.
Our job is simple — we help you avoid that risk. Using advanced technology like Ground Penetrating Radar (GPR), electromagnetic detection, and thermal imaging, we locate and map underground utilities with precision. Whether it’s power cables in Campbelltown’s industrial zones or water mains beneath Nowra’s residential estates, we make sure your excavation work proceeds safely, efficiently, and fully compliant with Australian Standard AS 5488.
What This Guide Covers
In this guide, I’ll explain what professional underground utility locating involves, the technologies we use, and why working with certified locators like us matters. You’ll also find:
- An overview of the main underground utilities we locate
- A step-by-step look at our professional locating process
- Common risks and real-world challenges we solve
- A local cost guide to help you budget your project
- A Sydney commercial case study showing our process in action
Why Underground Utility Locating Services Matter
Digging without proper knowledge of what’s below the surface isn’t just risky — it’s expensive. Striking an electrical conduit or gas main can cause serious injury, disrupt essential services, and create legal or financial liabilities for contractors and property owners.
Across regions like Wollongong, Sydney, and the Southern Highlands, where older infrastructure often intersects with new developments, the risk of utility strikes is particularly high. By investing in professional locating services, you safeguard your project, meet compliance obligations, and avoid costly downtime.
Understanding Underground Utility Locating
Underground utility locating involves detecting, mapping, and marking buried infrastructure before any excavation or construction work begins. This includes identifying:
- Electrical cables
- Gas pipelines
- Telecommunications lines
- Water and sewer mains
- Fibre optic networks
At Dowd’s Pipe and Cable Locating, we use a combination of GPR scanning, electromagnetic tracing, and thermal imaging, to pinpoint these utilities accurately — even in complex or congested areas. We then mark them with colour codes, GPS coordinates, and detailed reports to ensure your team knows exactly what’s beneath the surface before you dig.
In Australia, it’s not just good practice — it’s the law. Contractors must take reasonable steps to locate underground services before excavation, which includes consulting plans, using professional locators, and complying with AS 5488 Subsurface Utility Information standards.
Types of Underground Utilities We Locate
Our work spans a wide range of sites — from residential builds in Nowra to major civil infrastructure projects in Sydney. Using advanced detection equipment, we locate and map:
We trace electrical cables and high-voltage systems using electromagnetic locators, ensuring accurate identification of buried power lines to prevent electrocution and service disruption.
Electrical Cables & Power Infrastructure
Striking a gas line poses serious safety hazards. Our equipment detects buried gas infrastructure with precision, protecting workers and nearby communities.
Gas Pipelines
With fibre and NBN installations expanding across the Illawarra and Southern Highlands, accurate mapping of communications cables helps avoid costly breakages.
Telecommunications & Fibre Networks
We use GPR (Ground Penetrating Radar) to locate water mains, stormwater pipes, and sewer lines — essential for both residential excavation and council works.
Water & Sewer Pipes
The Risks of Unlocated Utilities
Failing to locate underground utilities before excavation can lead to:
- Injury or death from contact with live electrical cables or ruptured gas mains
- Project delays from emergency repairs and safety investigations
- Legal liability and fines for non-compliance with safety standards
- Increased costs far exceeding the price of professional locating
In areas like Wollongong and Sydney, where mixed-use developments and older infrastructure overlap, even a small excavation can uncover complex underground networks. That’s why we combine multiple detection methods and physical verification to ensure total accuracy.
Benefits of Professional Utility Locating
Working with experienced professionals like our team at Dowd’s delivers a range of benefits:
- Enhanced safety – Prevents accidents and keeps workers and communities safe
- Reduced project costs – Avoids emergency repairs and costly delays
- Legal compliance – Meets AS 5488 and duty-of-care obligations
- Data accuracy – Provides verified mapping for confident project planning
In short, utility locating isn’t an expense — it’s an investment that saves time, money, and lives.
The Importance of Hiring A Utility Service Locator
The dangers of cutting into live power cables are very real and not to be taken lightly. That’s why it’s crucial to determine where the cables are located before beginning any excavation work.
We use innovative technology to establish where electricity cables lie and will provide you with a report of their direction and depth to give to your contractor.
The cost to repair the damage is expensive and it will bring your project to a halt. That can be avoided by hiring us to locate your pipes and cables before breaking ground.
We’ll determine where cables, lines and pipes are, what direction they run, and how deep they are.
This knowledge will allow you to plan your project around this information to minimise or eliminate the risks altogether. If you’d like to speak to a utility locating expert, give us a call on 0434 635 134 today to speak to a member of our friendly staff!
Using State-of-the-Art Technology
Our knowledgeable team will locate a variety of electrical, telecommunication, gas and water lines. We’ll provide you with a report stating the directional path and depths to give to your contractor.
Our innovative equipment also allows us to discover hidden leaks or damage. That could end up saving you time and money because repairmen would know exactly where to work.
For your peace of mind, we’re accredited and certified with Dial Before You Dig (DBYD), Telstra accredited, National Utility Locating Contractors Association and JB Hunter Technology.
To ensure complete accuracy, we combine several industry-leading technologies tailored to the conditions of each site.
GPR uses radar pulses to detect metallic and non-metallic utilities, including PVC and concrete pipes. It’s ideal for identifying complex subsurface networks in clay soils and in coastal sands.
Ground Penetrating Radar (GPR)
Using transmitters and receivers, this method traces metallic utilities like power cables, telecommunication lines, and metal pipes with high precision. It’s especially effective where underground congestion is common.
Electromagnetic Locating
This non-destructive digging technique confirms exact locations by safely exposing buried utilities. It’s the final verification step before large-scale excavation, ensuring safety and accuracy.
Vacuum Excavation & Potholing
Step-by-Step Process for Underground Utility Locating
Our proven process ensures every project meets AS 5488 compliance and achieves safe excavation outcomes.
1. Site Assessment & Records Review
We begin by reviewing utility plans, liaising with asset owners, and identifying known underground services.
2. Electronic Detection
Using GPR and electromagnetic locators, we scan the area to detect all metallic and non-metallic utilities.
3. Physical Verification
We expose critical utilities for visual confirmation where necessary.
4. Marking & Documentation
Utilities are clearly marked using standard colour codes and GPS coordinates. We supply detailed maps and reports for your records.
5. Final Report & Compliance
We classify utility data according to AS 5488 Quality Levels, providing you with the information required for safe excavation and full regulatory compliance.
Cost Guide for Underground Utility Locating Services
The cost of professional utility locating services varies depending on project size, terrain, and detection complexity. Below is a general guide for our service areas:
| Service Type | Typical Cost (excl. GST) | Inclusions |
|---|---|---|
| Residential utility locating | $350 – $550+ | Basic scan using GPR or electromagnetic detection |
| Commercial & civil locating | $700 – $1,500+ | Multi-technology detection, mapping & reporting |
| Large-scale infrastructure locating | $1,500 – $3,000+ | Full AS 5488 compliance, GPS mapping, vacuum excavation |
These prices are indicative and vary based on access, site conditions, and reporting requirements. We’re always upfront about costs and happy to provide tailored quotes after a brief site discussion.
Case Study: Commercial Project in Sydney
A civil construction company in Sydney contacted us before commencing trenching for a new industrial complex. The site contained decades-old underground infrastructure with limited documentation — a high-risk scenario for excavation work.
Project Overview
We began with a comprehensive GPR and electromagnetic scan, identifying multiple overlapping utilities, including power conduits, fibre optic lines, and stormwater pipes. Due to conflicting data, we performed potholing to physically verify key service locations.
Our Process
Within two days, we delivered a detailed subsurface utility map compliant with AS 5488 standards. This allowed the contractor to modify trench alignments, avoiding three major utilities and saving potential repair and downtime costs.
Outcome
The project proceeded safely, without a single utility strike — a perfect example of how proactive locating prevents expensive setbacks.
Certified Locators You Can Trust
Our team of certified utility locators brings decades of experience in underground service detection across the Illawarra, Southern Highlands and Sydney. We maintain current certifications, use regularly calibrated equipment, and stay up to date with the latest technologies and safety standards.
When you choose Dowd’s Pipe and Cable Locating, you’re working with professionals who take pride in doing the job right — safely, accurately, and on time.
Safety Protocols We Follow
Safety is at the core of everything we do. From initial site assessment to final reporting, we follow strict procedures to protect workers, clients, and the public.
- All technicians wear full PPE and operate within exclusion zones
- Only calibrated, well-maintained equipment is used
- Ongoing communication ensures every stakeholder is informed of potential risks
By maintaining these standards, we help clients meet legal obligations under NSW Work Health and Safety regulations while ensuring the success of every project.
Common Challenges & How We Solve Them
Challenge: Congested Urban Infrastructure
In areas like Sydney and Wollongong CBD, multiple services overlap.
Solution: We perform grid-based GPR scans and multi-frequency electromagnetic detection to separate utilities with precision.
Challenge: Non-Metallic Pipes
Plastic water or gas pipes can be difficult to trace.
Solution: We use sondes, tracer wires, and acoustic detection combined with GPR scanning for accurate mapping.
Areas We Service
At Dowd’s Pipe & Cable Locating we proudly serve a wide area across Sydney, the Illawarra, South Coast and Southern Highlands. Whether you’re a homeowner, builder or project manager, we bring 25+ years of underground locating experience right to your site.
Sydney Metropolitan Area
- We cover the greater Sydney metro area including:
- Sydney CBD & inner suburbs
- Penrith & Western Sydney
- Bondi, Manly & Northern Beaches
- Campbelltown & Macarthur region
- Western Sydney growth corridors
Southern Highlands
For projects in the cooler climes and elevated terrain of the Southern Highlands, we service:
- Moss Vale
- Bowral
- Goulburn
- Nearby villages and surrounds
Illawarra & South Coast
Our home base is the Illawarra region, and we extend our utility-locating services across the South Coast, including:
- Wollongong, Unanderra, Shellharbour
- Nowra & the Shoalhaven region
- Ulladulla & South Coast towns
Conclusion: Protect Your Project with Professional Utility Locating
Professional underground utility locating services are essential for anyone planning to excavate — whether it’s a backyard project in Wollongong or a large commercial development in Sydney. At Dowd’s Pipe and Cable Locating, we combine advanced technology, certified expertise, and local experience to deliver accurate, compliant, and safe results every time.
Next Steps
Before you dig, contact Dowd’s Pipe and Cable Locating for a site assessment and free quote.
Real Customer Reviews
Declan moved things around to fit me in at short notice for an urgent water leak. He located the leak through concrete within minutes. He provides a highly efficient and professional service. I will be using Dowds Pipe and Cable Utility Locating for all of my future work.
Declan came out to scan our concrete slab at our new premises ahead of drilling into the concrete, his findings totally put our mind at ease for the job ahead. Declan is professional, friendly and always a pleasure to deal with. Highly recommended for Utility Services Locating!
Great service and value for money, highly recommended Dowds Pipe and Cable Utility Locating.
Very friendly and helpful utility locating service. Declan took the time explaining things over the phone to me in a very clear, informative, and professional way. Thanks
Utility Locating Services FAQs
What are underground utility locating services?
Underground utility locating services identify hidden pipes, cables and conduits beneath the ground using advanced technologies like Ground Penetrating Radar (GPR) and electromagnetic detection. Dowds Pipe and Cable Locating helps prevent costly damage and ensure excavation safety.
Why is underground utility locating important before digging?
Locating underground services before digging helps avoid striking live utilities such as gas, water or electrical lines. Dowds Pipe and Cable Locating ensures your site is safe and compliant with Australian Standard AS5488.
How accurate are professional utility locating services?
Professional utility locating is highly accurate when done with GPR and EM technology. Dowds Pipe and Cable Locating provides centimetre-level precision and detailed mapping to prevent excavation errors.
What is the difference between utility locating and Dial Before You Dig?
Dial Before You Dig provides utility plans, but those are only indicative. Dowds Pipe and Cable Locating physically verifies and pinpoints exact utility locations on-site using specialist locating equipment.
What technology does Dowds Pipe and Cable Locating use?
Dowds Pipe and Cable Locating uses Ground Penetrating Radar (GPR), electromagnetic induction and radio frequency tracing to locate underground assets without excavation or damage.
Can GPR detect both metallic and non-metallic utilities?
Yes. GPR detects both metallic and non-metallic utilities including PVC, concrete, and fibre optic conduits. It provides a complete picture of what's underground, not just metal objects.
What depth can utility locators detect underground services?
Most GPR systems can detect utilities from surface level to depths of up to 3 metres depending on soil conditions. Dowds Pipe and Cable Locating assesses each site to determine optimal scan depth and clarity.
Can utility locating detect voids or buried structures?
Yes. Advanced radar imaging can identify underground voids, foundations, tanks and other anomalies in addition to pipes and cables, giving a comprehensive subsurface map.
Is underground utility locating required by law in Australia?
While not always mandated, Australian Standard AS5488 recommends locating all underground utilities before excavation. Hiring Dowds Pipe and Cable Locating helps you stay compliant and avoid liability.
What happens if you hit an underground service?
Striking a buried service can cause serious injury, property damage and project delays. Using Dowds Pipe and Cable Locating before digging eliminates this risk through verified on-site mapping.
Does utility locating help meet WHS requirements?
Yes. Conducting underground utility scans supports workplace health and safety obligations under Australian law by minimising excavation hazards.
How much does underground utility locating cost?
The average cost of underground utility locating ranges from $350 to $1,500+ per site depending on area size, depth and access. Dowds Pipe and Cable Locating provides upfront, no-obligation quotes.
What factors affect the cost of a locating job?
Pricing depends on factors like terrain, soil type, site access, and number of utilities to be mapped. Dowds Pipe and Cable Locating offers tailored pricing based on site complexity.
How long does a utility locating job take?
Most residential jobs take 1-2 hours, while commercial sites may require half a day or more. Dowds Pipe and Cable Locating provides same-day reporting and clear utility maps.
Do you provide maps or digital reports after scanning?
Yes. Dowds Pipe and Cable Locating supplies clear digital maps and marked site plans showing all located utilities for future reference and compliance documentation.
What types of properties need utility locating?
Utility locating is essential for construction sites, residential developments, roadworks, landscaping and plumbing projects. Dowds Pipe and Cable Locating works with builders, councils and homeowners alike.
Can you locate utilities under concrete or asphalt?
Yes. Using GPR technology, Dowds Pipe and Cable Locating can scan beneath concrete slabs, driveways and asphalt surfaces without causing any damage.
Do you locate stormwater and sewer pipes?
Absolutely. Dowds Pipe and Cable Locating identifies stormwater, sewer and drainage lines quickly and accurately before any excavation or repair work.
Can you locate telecommunications and electrical cables?
Yes. Our accredited team locates live and decommissioned electrical cables, Telstra lines and fibre optic conduits using EM and GPR equipment.
Why should I hire Dowds Pipe and Cable Locating instead of doing it myself?
Professional locators use certified equipment and training to guarantee accurate, compliant results. Dowds Pipe and Cable Locating prevents costly mistakes that DIY methods can't detect.
Are your technicians accredited or insured?
Yes. All technicians at Dowds Pipe and Cable Locating are fully insured, accredited and trained to industry standards, ensuring professional results and safety compliance.
Do you service residential and commercial clients?
Yes. Dowds Pipe and Cable Locating handles projects of all sizesâ from small backyard jobs to large commercial and infrastructure developments.
How can I book a utility locating service?
You can call Dowds Pipe and Cable Locating on 0434 635 134 to book a service or request a free quote. We respond quickly and can often schedule same-week appointments.
