Environmental Firm

We partner with Environmental Firms to execute projects that stay on schedule, with minimal delays and added costs.

Preston Companies represents the fusion of Preston Pipelines, Preston Electric and Dirt Market. Together, these businesses represent the finest in wet and dry utilities, soils testing and management, and fill site management.

Our Promise

Maximize Value, Minimize Risk

Preston Companies’ provides cost effective solutions for soil to permitted sites with acceptance criteria, protecting owners and contractors from risk. Maximize clean soil by delineating and minimize contamination.

Fill the Need

Managing your material needs with our large network and skilled staff to find the best solutions whether it be import or export of soil

Solving Underground Obstacles

To relieve miscommunication and stress, Preston Companies’ combined our wet and dry utility installation services for both onsite and offsite projects.

Puzzle Solving, Perfected

By analyzing all of the pieces of a project, we are able to create a picture perfect solution that best suits your needs and your budget.

Quality, Integrity, Service.

It’s the way we do business.

We Understand Your Needs

Our services include, but are not limited to, design consultation, budgeting for future projects, excavating and installing underground wet and dry utilities, soils testing and management, fill site management. Preston Companies can complete the task for you safely, efficiently, with minimum risk and site disruption.

Our work is driven by extensive knowledge of landfill options, including our own clean fill sites and similar projects in the market. We also tap into a broad network of soils market insights to find the most cost-effective sources of clean soil, which meets a variety of environmental screening levels and geotechnical properties.

Off haul
Sampling approach
Isolation destination
Class-1 & Class-2

Frequently Asked Questions

What services can Preston Companies’ provide for my project?

Preston Companies delivers consolidated site utility solutions. For onsite and offsite instances, we provide wet and dry utility installation, and installation of specialty equipment such as pump stations, traffic signalization, grease interceptors, etc. We also provide supply dirt management solutions, such as the legal import, export, and/or disposal of native soils.

Why should I choose Preston Companies to serve my project needs?

With over 50 foremen and crews, Preston Companies is one of the largest underground utility and dirt management contractors in California. Our large, expertly trained team gives us the flexibility to serve our clients quickly and efficiently.

What are Preston Companies’ design-build capabilities?

Preston Companies takes a collaborative approach to design-build. We partner directly with leading engineering firms to deliver design-build projects to our clients.

I need help with budgets for my upcoming project. Can Preston Companies help?

Yes, Preston Companies has extensive estimating resources across all of our disciplines, and can help you define a project scope and related budget.

My company does mostly interior improvements, but we are being asked to include site electrical scope in an upcoming bid package. How can Preston Companies help me win this job?

We understand that some Electrical companies are not equipped to self-perform excavation work, or other scopes that require the use of heavy equipment. We can help you complete your bid package, and leverage our extensive fleet of equipment to execute trenching, backfilling, compaction, hoisting and setting of special equipment.

Is Preston Electric signatory to the IBEW?

Yes, Preston Electric is a union electrical contractor, capable of handling all C-10 licensed work.

We are beginning the soils analytics portion of our project. What can Preston Companies do to help this process?

You can leverage a variety of services provided by Dirt Market, a Preston Company. Our drilling machines are equipped with Shelby Tube technology to provide comprehensive dirt sampling that identifies your site’s unique soil characteristics. Samples are then taken to a lab for analysis, reviewed by our expert team, and matched up with a proper and legal disposal site.

When should we engage Dirt Market for these services?

The sooner the better. Often, customers wait until the construction phase of work to get soil analysis done. This can adversely affect the overall site schedule and logistics, as stockpiles continue to grow while sampling and analysis are being done. Executing soil sampling and analysis in the preconstruction phase allows you to move dirt as soon as construction begins.