Private Locating vs. 811: What Each Covers and Where the Work Is
If you're considering starting a utility locating business, or adding locating services to an excavation company, you've probably heard people talk about "811 work" and "private locating" as if they're the same thing. They aren't.
Understanding private locating vs. 811 work is important because the customers, revenue sources, equipment needs, and business opportunities are often very different. The good news is that both segments can provide opportunities for contractors who understand where the work comes from and how customers buy these services.
The Short Answer: What Is the Difference Between Private Locating and 811?
The biggest difference between private locating and 811 locating is ownership. An 811 locate generally covers public utility-owned lines that participate in the state's one-call system, while private locating focuses on privately owned underground utilities that are typically not marked through an 811 request.
Most private locating companies work directly for contractors, property owners, engineers, municipalities, and facility managers who need a more complete picture of what's underground before excavation begins.
Understanding How the 811 System Works
Before most excavation begins, contractors are required to notify their state's one-call system.
The national 811 system exists to help prevent damage to underground infrastructure.
When an excavator submits a locate request, participating utility owners are notified so they can mark their underground facilities before digging begins.
Contractors can learn more about the process through the national 811 program:
In a typical scenario:
An excavation contractor submits an 811 ticket.
Utility owners receive notification.
Utility representatives or contract locators mark their facilities.
Excavation proceeds after required waiting periods.
From an excavation perspective, 811 is usually the first step before digging.
What 811 Usually Covers
The specific utilities included vary by location and participating utility owners, but 811 marks commonly involve infrastructure such as:
Electric distribution lines
Natural gas lines
Telecommunications facilities
Fiber optic networks
Water systems
Sewer systems
However, the exact facilities marked depend on ownership.
This is where many contractors become confused.
Just because a utility exists underground does not automatically mean it will be marked through an 811 request.
What Private Utility Locating Covers
Private utility locating fills the gaps.
Many underground utilities exist beyond the utility owner's connection point. Those lines may belong to:
Commercial property owners
Industrial facilities
Schools
Hospitals
Apartment complexes
Universities
Manufacturing plants
Municipal campuses
Private developments
Examples often include:
Private electric systems
Parking lot lighting circuits
Irrigation wiring
Facility-owned water lines
Private gas systems
Campus utility networks
Communication infrastructure
Drainage systems
These utilities may not be identified through a standard one-call locate request.
As a result, contractors frequently hire private utility locating companies to reduce risk before excavation.
Learn more in our blog: Pricing Utility Locating Services: Per-Ticket and Contract Models
Why Private Locating Demand Continues to Grow
One reason many contractors enter private locating is the growing complexity of underground infrastructure.
Modern properties frequently contain:
Multiple electrical systems
Fiber optic networks
Security systems
Lighting circuits
Water infrastructure
Storm drainage systems
Many property owners lack accurate records.
A facility may have undergone decades of renovations, additions, and repairs without maintaining complete utility maps.
As a result, contractors often need additional locating beyond what an 811 ticket provides.
Where the Work Is for Private Utility Locators
For entrepreneurs looking at the locating business, private locating often creates opportunities in several markets.
Commercial Construction
General contractors regularly request private utility locating before projects begin.
Common examples include:
Office renovations
Retail developments
Industrial expansions
Parking lot reconstruction
Building additions
Before trenching or excavating, project teams often want a complete understanding of underground conditions.
Excavation Contractors
Excavators are among the largest users of private locating services.
Whether installing utilities, performing grading work, or excavating foundations, many contractors want additional information before digging.
This is particularly true on older sites where records may be incomplete.
Municipal Projects
Cities and municipalities frequently manage properties with aging infrastructure.
Private locating may be used for:
Parks
Public works facilities
Water treatment sites
Government campuses
Sports complexes
These properties often contain decades of undocumented underground utilities.
Educational and Healthcare Facilities
Schools, universities, and hospitals commonly operate extensive underground utility systems.
Locating services help support:
Facility expansions
Utility repairs
Maintenance projects
New construction
These clients often value documentation and ongoing relationships.
Learn more in our blog: How to Start a Utility Line Locating Business
Where the Work Is for 811 Contract Locators
811-related work operates differently.
Most contract locators performing one-call work provide services through agreements with utility owners or their locating contractors.
The customer is generally not the homeowner or excavator.
Instead, the work may come through:
Electric utilities
Gas utilities
Telecommunications providers
Water providers
Contract locating firms
Locators in this space often handle high ticket volumes and work within established response-time requirements.
The business model may prioritize efficiency and volume over project-specific consulting.
Equipment and Skills Needed for Both Markets
Whether serving private locating clients or performing 811 work, common equipment may include:
Electromagnetic locators
Ground penetrating radar (GPR)
GPS mapping systems
Field tablets
Utility marking supplies
However, private locating often involves more investigative work.
Customers may request:
Utility mapping
Record development
Subsurface utility engineering support
Utility verification
Organizations such as the Common Ground Alliance provide resources focused on underground damage prevention and utility locating best practices:
Many private locating projects require a higher level of problem-solving than routine locate tickets.
Learn more in our blog: How to Start a Utility Line Locating Business
Which Business Model Is Better?
There is no universally better option.
Both have advantages.
Advantages of Private Utility Locating
Private locating may offer:
Direct relationships with customers
Project-based opportunities
Specialized services
Recurring commercial clients
Potential consulting opportunities
Many contractors appreciate the flexibility and variety.
Advantages of 811 Locating
811-related locating may offer:
Consistent ticket volume
Structured workflows
Established systems
Large service territories
Long-term utility relationships
Some operators prefer the predictability of this type of work.
Success depends heavily on the local market, customer relationships, staffing, competition, service quality, and operational efficiency.
How Excavation Contractors Use Both Services
Many excavation contractors rely on both 811 and private locating.
A common workflow may look like this:
Submit an 811 ticket.
Receive utility owner markings.
Identify areas of concern.
Hire a private locator for additional investigation.
Use potholing or hydro excavation to verify utility locations where necessary.
This layered approach can help reduce risk before digging begins.
It also creates opportunities for locating businesses that understand how contractors actually work in the field.
What Most People Get Wrong
The biggest misconception is that calling 811 identifies everything underground.
It doesn't.
Experienced excavation contractors know that an 811 ticket is often only part of the investigation process. Private utilities, abandoned infrastructure, undocumented installations, and facility-owned systems may still exist underground after utility owner markings are completed.
That's why many professional excavators, GCs, municipalities, and engineers continue to use private utility locating services even after contacting 811.
Building a Business Around Private Locating
For contractors interested in entering the utility locating industry, private locating can provide a practical entry point.
Potential referral sources include:
Excavation contractors
Sitework contractors
Engineers
Surveyors
Municipal agencies
Facility managers
General contractors
Building long-term relationships often matters more than advertising.
Many locating companies generate repeat work by consistently:
Communicating clearly
Delivering accurate information
Providing thorough documentation
Meeting deadlines
Understanding excavation risks
Like many contractor services, reputation compounds over time.
Insurance and Licensing Reality Check
Utility locating businesses operate around underground infrastructure where mistakes can have serious consequences.
Coverage commonly considered by utility locating companies may include:
Commercial auto insurance
Tools and equipment coverage
Professional liability coverage where appropriate
Umbrella liability insurance
Customers may also require certificates of insurance (COIs), additional insured endorsements, and contract-specific coverage requirements before work begins.
Licensing, certification, and registration requirements vary by state, municipality, utility owner, and project type. Some jurisdictions or contracts may require specific locator qualifications or training credentials.
Always verify current requirements with the appropriate state agencies, local authorities, and project owners before performing work.
Frequently Asked Questions
Does 811 locate private utilities?
Generally, no. An 811 request typically covers participating utility owner facilities. Private utility systems often require separate locating services.
Who hires private utility locating companies?
Common clients include excavation contractors, general contractors, engineers, municipalities, facility managers, schools, hospitals, and commercial property owners.
Can I excavate after the 811 utilities are marked?
Excavation requirements vary by state and project. Many contractors still perform additional investigation when private utilities may be present.
Is there demand for private utility locating services?
Many markets continue to generate demand due to aging infrastructure, increased construction activity, and limited underground utility documentation.
Do utility locating businesses need insurance?
Yes. Most locating companies carry insurance to address liability exposures related to locating operations, vehicles, employees, and equipment.
Final Thoughts
Understanding private locating vs. 811 work is essential for contractors, excavators, and business owners considering opportunities in the utility locating industry.
The 811 system plays a critical role in protecting underground utility infrastructure, but it does not necessarily identify every underground line on a property. Private utility locating helps fill those gaps and has become an important service for commercial construction, municipal projects, industrial facilities, and excavation contractors across the country.
Whether you're building a dedicated locating company or adding locating services to an existing excavation operation, the greatest opportunities often come from understanding where underground risk exists and helping customers manage it effectively.
Request a Free Insurance Quote
As your utility locating business grows, insurance requirements often become more important. Contractors, engineers, municipalities, utility owners, and facility managers frequently require proof of coverage before awarding work.
Excavating Insurance Partners specializes in insurance solutions for utility locating businesses, excavation contractors, hydro excavation companies, drilling contractors, sitework firms, and other dirt-world professionals across the United States.
When you're ready to launch a business, evaluate your current coverage, or compare insurance options, request a free quote from Excavating Insurance Partners today:
Or call 317-942-0549 to speak with a team that understands underground utility work, excavation risks, and contractor operations.
The right insurance won't locate a utility, but it can help protect the business you've worked hard to build.
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