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About Us – Traditional Craftsmanship incorporating innovative building techniques

Danielsen Construction & Energy Management specializes in home comfort and efficiency.

For 25 years, Thomas Danielsen has worked in energy efficient construction. By constantly observing and practicing new techniques in the green building industry, he has optimized his workflow and become an experienced home performance specialist.

It’s not only one thing that makes your house energy efficient. It’s important to consider all tasks beforehand in order to get the best results and keeping costs to a minimum.

We at Danielsen Construction not only look at ourselves as contractors, we are project managers for energy efficiency.

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Contractor Energy Efficiency - Calaveras County

Tom Danielsen

Quality construction incorporating durable energy efficiency building techniques with high attention to detail.

Thomas Danielsen has been a licensed contractor since 1990. During this time we have been providing durable solutions for structures, HVAC systems, and high performance insulation. This naturally brought us into the green building movement.


Call us: (209) 728-4921

Schedule a consultation

Our Work

Finished green building projects


  • Durable Construction with high attention to detail in homes and office buildings
  • High Performance HVAC
  • High Performance Insulation Solutions
  • Using state of the art equipment for energy efficiency measurement
  • Moisture and Drainage Solution and Water Damage Repair
  • Green building techniques
  • Well established team of specialists for any possible aspect of construction like pools, landscaping, luxury homes, etc.
  • Licensed General Building Contractor, HVAC Contractor, and Insulation Contrator

We are specialists in every step that is needed to build a truly energy efficient and comfortable home.


Have a look at some of our finished projects.

Efficiency First - Founding Member Build It Green Member Energy Star Home Performance cbpca - California Building Performance Contractors Association BPI - Building Performance Institute AirScape - Energy Efficient Natural Cooling DOE Zero Energy Ready Home

Where we operate

Proudly serving the Sierra Foothills in California

Angels Camp



Big Trees

Valley Springs


Forest Meadows



Calaveras County

Gold Country

Highway 4