About Us

Thompson Construction is an excavating and grading general engineering contractor based out of Ukiah CA. Our services include but are not limited to, septic system installation and repairs, land and site development for residential, commercial and agricultural, pond construction and lining, retaining wall construction, hillside grading, drainage systems, underground utilities (water/ gas/ sewer/ electrical/culverts) installation and repairs. OQ certified for PG&E excavation and backfill, swimming pool excavation, concrete flatwork and sub grade, asphalt paving, trucking services, defensible space for fire prevention, fuel management, demolition, bridge and abutment installation, and road construction and maintenance. Proudly Serving the Northern California area.

At Thompson Construction we love what we do. We take the utmost pride in our work and Customer satisfaction. We have great attention to detail. No job is too big or too small!

Site Development

We offer comprehensive Site Development services for all types of projects. Our experienced team of professionals can handle any size project, from small residential developments to large commercial and agricultural sites.

Septic Systems

Our team of experienced septic professionals are equipped with the knowledge and experience to get the job done right. We provide efficient and reliable installation and repair services, ensuring that your septic system is installed properly and safely.

Underground Construction

Our experienced team provides a wide range of underground utility services including excavation and installation of power, gas, water, and sewer lines. We are also OQ certified to dig for PG&E gas and electric services. We strive to provide safe, efficient, and cost-effective solutions that meet all of our client’s needs.

And more!

We are your one-stop shop for all of your construction needs. With years of experience and a commitment to quality, we provide top-notch construction services to our clients. We specialize in both residential and commercial projects, so no matter what your construction project is, we have the skills and expertise to help. Contact us today to discuss how we can make your construction plans come to life.

Our Mission

At Thompson Construction, our mission is to provide honest, quality workmanship and skilled services to our clients in the excavation and grading industry. We strive to exceed our customers expectations and develop long-term relationships built on trust.