Building Arizona’s
Infrastructure from the Ground Up
Turnkey dry utility solutions for general contractors, developers, and municipalities. our services get a quote
Precision Trenching
Boring & Excavation Services
Serving Phoenix and beyond with safe, efficient underground utility construction.
About Us
See Our Work in Action Explore real projects that showcase our trenching, boring, and utility installation expertise across Arizona. Gallery
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Years of Experience

Delivering reliable underground utility services since 1986.

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Homes Serviced Annually

Providing early construction power and utility trenching across Arizona.

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Cities Served

Extensive reach across Maricopa, Pinal, and Yavapai counties.

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OSHA Compliant

Protecting people and infrastructure from day one – Every project, every crew, every time.

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Years of Expeience

Early Construction Power & Utility Trenching Across Arizona

Windsor Underground LLC is a family-owned and operated underground utility contractor based in Phoenix, AZ. With a legacy dating back to 1986, we specialize in providing turnkey dry utility services, including trenching, hydrovac  excavation, horizontal directional drilling, and more. Our commitment to safety, efficiency, and client satisfaction has made us a trusted partner for projects of all sizes.

Our team brings decades of experience working with electrical contractors, general contractors, utility companies, and municipalities. We pride ourselves on our ability to deliver projects on time and within budget, all while maintaining the highest standards of quality and safety.

Comprehensive Dry Utility Solutions

Trenching, Boring & Utility Experts

At Windsor Underground, we offer a full suite of services tailored to meet the diverse needs of our clients. Our team is equipped to handle projects ranging from residential developments to large-scale municipal infrastructure.

Trusted Partner in Underground Construction

Trusted For Experience & Reliability

Choosing Windsor Underground means partnering with a company that values excellence and client satisfaction. Our comprehensive services, skilled team, and commitment to safety set us apart in the industry.

Project Management
Experienced Team
Safety Compliance
Advanced Technology
Service Driven
Licensed & Insured
Decades of Excellence in Utility Construction

Building Infrastructure Since 1986

Our rich history and extensive portfolio reflect our dedication to quality and client satisfaction. We have successfully completed numerous projects, earning the trust of contractors and municipalities alike.

  • Proven track record across residential, commercial & municipal projects
  • Trusted by top contractors, developers, and Arizona utility providers
  • Legacy built on safety, reliability, and performance since 1986

Exceptional Service and Quality

“Windsor Underground exceeded our expectations with their professionalism and attention to detail. Our project was completed on time and within budget.”

Reliable and Efficient

“Their team was knowledgeable and responsive throughout the project. We highly recommend Windsor Underground for any utility construction needs.”

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Consultation and Planning
We begin by understanding your project's unique requirements and developing a tailored plan.
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Design and Coordination
Our team collaborates with stakeholders to ensure seamless integration of utility systems.
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Execution and Installation
Utilizing advanced equipment, we carry out the installation with precision and efficiency.
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Inspection and Completion
Final inspections are conducted to ensure compliance and quality before project handover.

Ready to Start Your Project?

Contact Windsor Underground today to discuss your utility construction needs and discover how we can support your next project.

What our Clients Say

Understanding Our Services and Processes

Your Questions Answered

We address common inquiries to help you better understand our offerings and how we can assist with your projects.

What areas do you serve?
We primarily serve Phoenix and surrounding cities in Maricopa, Pinal, and Yavapai counties.
What services do you offer?
We provide full dry utility construction services from trenching to energization.
Who are your typical clients?
We work with general contractors, developers, electricians, and municipalities.
How does your process work?
We follow a streamlined, start-to-finish project model, ensuring efficiency and quality at every stage.