KA Dual Engineering Contractor

Heavy-Civil Site Work, Infrastructure, Utilities, Excavation, & Grading

Valleywide Dig and Haul is a KA Dual Engineering licensed contractor serving Phoenix and communities throughout Arizona. Our expanded licensing allows us to perform both commercial heavy-civil engineering work and residential engineering projects under one license classification.

From site preparation and excavation to utility infrastructure, road improvements, and large-scale development support, our team delivers dependable field execution for projects that require the right equipment, experience, and licensing.

Whether you are developing a residential community, commercial property, industrial facility, or major infrastructure project, Valleywide Dig and Haul can help move the project forward safely and efficiently.

For a 100% free estimate, give us a call at 602-529-5526 or send us an email.

Worker finishing concrete surface during deceleration lane installation for commercial property in Arizona

What Does a KA Dual Engineering License Cover?

A KA Dual Engineering license combines the scope of Arizona’s commercial A-General Engineering license with the residential B-4 General Residential Engineering license.

This combined authority allows Valleywide Dig and Haul to perform qualifying engineering contractor work for both commercial and residential projects, including heavy-civil construction, site infrastructure, grading, excavation, utility improvements, and related development work.

Our KA Dual Engineering capabilities include:

Commercial Heavy Engineering Services

Commercial development projects often require extensive site work before vertical construction can begin. Valleywide Dig and Haul provides the excavation, grading, utility, and infrastructure support needed to prepare commercial sites for the next phase of construction.

Our commercial engineering contractor services can support:

We work with developers, general contractors, property owners, and construction teams to help keep site work organized, productive, and aligned with project requirements.

Subgrade preparation and curb layout in progress for MAG-standard deceleration lane construction

Residential Engineering and Development Work

The KA Dual Engineering license also expands our ability to assist with residential engineering projects. This is especially valuable for homebuilders, developers, and property owners who need a contractor equipped to handle site infrastructure and heavy-civil work connected to residential development.

Our residential engineering and development work services may include:

By serving both residential and commercial markets, Valleywide Dig and Haul can support projects as they grow from early site development through larger infrastructure needs.

Infrastructure and Offsite Improvement Contractors

Infrastructure work is a critical part of many Arizona development projects. Valleywide Dig and Haul can assist with the on-site and offsite improvements needed to support safe access, utility connections, drainage, and long-term property use.

Our team can support infrastructure development involving:

We understand that infrastructure work must coordinate with project schedules, engineering plans, utility requirements, and the work of other trades. Our goal is to provide dependable site execution that helps keep the broader project moving.

Why Choose Valleywide Dig & Haul?

Valleywide Dig and Haul brings hands-on Arizona construction experience to projects that demand careful planning, capable equipment, and reliable field crews. Our KA Dual Engineering license adds important flexibility for clients who need qualified support across both commercial and residential engineering scopes.

Clients choose Valleywide Dig and Haul for:

Request an Estimate for Engineering Contractor Services

If you need a KA Dual Engineering contractor for commercial site development, residential infrastructure, excavation, grading, utilities, road improvements, or other heavy-civil work, contact Valleywide Dig and Haul by calling 602-529-5526 or send us an email

Frequently Asked Questions

A KA Dual Engineering license allows a contractor to perform the work permitted under Arizona’s commercial A-General Engineering classification and residential B-4 General Residential Engineering classification.

Yes. Valleywide Dig and Haul can support commercial heavy-engineering and site-development projects, including infrastructure, utilities, excavation, grading, road improvements, industrial facilities, hospitals, hotels, and data centers.

Yes. The KA Dual Engineering license allows Valleywide Dig and Haul to perform qualifying residential engineering and site-infrastructure work, including grading, excavation, utility improvements, drainage-related site work, and development support.

Yes. Valleywide Dig and Haul can assist with offsite utility improvements and related site-infrastructure work as part of commercial or residential development projects.

Valleywide Dig and Haul supports a wide range of civil construction projects, including site development, earthwork, excavation, grading, drainage, concrete, road improvements, utility infrastructure, and building pad preparation. We work on commercial, industrial, residential, and custom construction projects throughout the Phoenix area.

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