Welcome To Theis Engineering

For over 20 years, Theis Engineering, Inc., has been a leader in general site engineering in the Northern California area. Whether your needs are grading, excavating, and demolition for site preparation, or underground infrastructure service and asphalt paving, Theis Engineering is ready to work with you to assure the finest quality workmanship for your residential or commercial project.

Why choose Us?

Skilled Professionals.Can handle the big things

Theis Engineering’s experienced heavy-equipment operators can handle even the toughest structural excavation project.

Effective Planning

Effective Planning.Construction Process Organized.

Using GPS technology, we can achieve the most accurate results for your grading needs. We guarantee the site is properly engineered for proper water drainage and erosion reduction.

Why choose Us?

Risk Management.Enviromentally Friendly

Theis Engineering uses the most environmentally responsible techniques for demolishing and removing existing materials for site preparation.