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Custom Eco-Friendly Updates and Extra Space for Your Colorado Home

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We’ve been building custom Colorado homes for more than 30 years. We have the experience to know what works, and how to make the most of your current space.


We specialize in solutions for your home that will minimize energy use, use as many sustainable, locally-sourced materials as possible, and maximize your property value.


We work with you every step of the way to figure out the solution that will work best for your home–we never build the same backyard bungalow or basement apartment twice.


We’re a family-run business that has built a reputation of reliability. You’ll never worry about your project. Our team will ensure you are part of the process every step of the way.

Make the most of your home.

Ready for more space but not ready to move? We understand.

We specialize inhelping you find the best solution for your space. Whether that’s an addition, transforming a finished space, building backyard bungalows and garage apartments, or building a brand-new custom home, we will transform the way you live.

Contact us today to see what solutions could work for your home.

About Us

Since 1986, Helseth Construction LLC has been building custom residential and commercial buildings in and around Denver, Colorado. We are a family-run business dedicated to providing a solution for your family that you will love for decades.

We build custom, turnkey solutions to turn your unused space into rental income or the extra space your family needs: from backyard bungalows, carriage homes, and garage apartments to basement remodels and home additions, we find the right use of space for your home.

We are fully licensed and insured to work in the Denver Metro area and are a member of the US Green Building Council.

Owner’s Statement 

Each of us has to do our best to make our products and practices less carbon intensive.  We’re trying to walk that walk, evidenced by the materials we build with and the low-energy footprint our homes will have, but also by building infill near the city center rather than sprawling ever further out away from it.  Making those infill homes small also supports extended families living together or aging-in-place.  Maybe most important, they give first time home buyers a decent alternative.

Nearly perfect!

"A" Rating Reviewer

Angie's List

Ready to see what your home could be?

Contact us today for your introductory consultation.*

*Your information is confidential and will never be shared with anyone.