Before digging on any property, whether it’s a small residential project or a large commercial job, it’s critical to understand what’s buried underground. Most people know they need to call 811 before digging, but many don’t realize that 811 does not locate everything.
This is where private utility locating becomes important. A large portion of underground utilities are privately owned and are not marked by the state one-call system. If those lines aren’t identified before excavation, the result can be damaged utilities, safety risks, costly repairs, and project delays.
What 811 Does and Doesn’t Cover
Calling 811 is free and often legally required before any excavation. When a ticket is submitted, public utility companies are notified and locators mark the underground utilities they own and maintain. These markings typically stop at the meter, main service connection, or property line. Once a utility continues onto private property, it is considered private and is not included in an 811 locate. This is one of the main reasons that private utility strikes occur, even after an 811 call.
Where 811 Stops Marking Utilities
In most cases, these markings stop at the meter, main service connection, or property line. Once a utility passes that point and serves only a private property or structure, it is no longer considered public. That utility becomes the responsibility of the property owner and is not included in an 811 locate.
This is a common source of confusion and one of the main reasons private utility strikes occur.
What Are Private Utilities?
Private utilities are underground lines that are owned by a homeowner, business, or property manager rather than a public utility provider. These utilities are extremely common and often undocumented, especially on older properties or sites that have been modified over time.
Common Examples of Private Utilities
Private utilities often include gas lines feeding pool heaters or generators, electrical lines serving detached garages or site lighting, private sewer laterals, irrigation systems, fire lines on commercial properties, and private communication or data lines.
Because these utilities are not registered with 811, they remain unmarked unless a private utility locator is hired to identify them.
Why Private Utility Locating Is Important
Even after calling 811, many utility strikes still occur because the damaged line was private. Striking a private utility can cause injuries, service outages, emergency repairs, and unexpected liability for both property owners and contractors. Private utility locating provides a more complete and accurate picture of what lies beneath the surface, helping to prevent costly mistakes and safety hazards.
Who Should Consider Private Utility Locating?
Private utility locating is not limited to large construction projects. It’s useful for anyone planning to dig, regardless of project size.
Homeowners
Home improvement projects such as fencing, decks, pools, landscaping, or outdoor kitchens often cross private utility lines that aren’t visible or documented.
Contractors and Excavators
For contractors, locating private utilities helps prevent job delays, costly damage claims, and safety incidents. Many professional standards and contracts require confirmation that private utilities have been addressed.
Property Managers and Commercial Sites
Multi-unit properties, campuses, and commercial sites often contain complex private utility networks. Accurate locating is essential before maintenance, upgrades, or redevelopment.
How Private Utility Locators Find Underground Lines
Professional locators use specialized equipment to detect underground lines, including both metal and non-metal utilities. Electromagnetic locating traces conductive pipes and cables, while Ground Penetrating Radar (GPR) can detect non-metallic lines, such as PVC or clay pipes. In some cases, sondes or tracing devices are inserted into pipes to map their path beneath the surface. Using multiple detection methods improves accuracy, especially when utility records are missing or unreliable.
A private utility locate is recommended whenever digging extends beyond the area marked by 811, near buildings or paved surfaces, or in areas where utility records are incomplete. When there is any uncertainty about what may lie underground, scheduling a private locate is the safest approach. The cost of locating is minimal compared to the potential expense of repairing a damaged line or dealing with project delays and liability issues.
When Is a Private Utility Locate Recommended?
A private utility locate should be considered whenever digging extends beyond the area marked by 811, near buildings or paved surfaces, or in areas where utility records are incomplete or unknown.
If there is any uncertainty about what may be underground, scheduling a private locate is the safest approach. The cost of locating is minimal compared to the cost of repairing a damaged utility or dealing with delays and liability.
Using 811 and Private Utility Locating Together
Calling 811 is always the first step and an essential part of safe excavation. However, it does not replace private utility locating. The safest and most effective approach is to use both services together to ensure all underground utilities — public and private — are identified before digging begins.
Private utility locating fills the gap that 811 cannot. By identifying underground utilities on private property, homeowners, contractors, and property managers can avoid costly mistakes and keep projects moving safely and efficiently.
Before you dig, call 811 — and if your project goes beyond those markings, professional private utility locating helps complete the picture.
Call 811, But Don’t Stop There
Calling 811 marks public utilities, but private lines — like irrigation, site lighting, and sewer laterals — aren’t included. Safe Site provides professional private utility locating to protect your project, crews, and property from costly strikes.
Dig Smart. Dig Safe.
Contact us!