Select Page


Custom Eco-Friendly Updates for Your Colorado Home

Ready for a free consultation?


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.


Transform the Way You Live

Ready to live more sustainably and eco-friendly? Why not start with your home?

We specialize inhelping you find the best solution for your space. Whether that’s starting the search for a fixer in the perfect neighborhood, transforming your current home with an addition, building a backyard bungalow or garage apartment, 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. In 2017 we added a real estate arm to help our customers from the day they start the search for an eco-friendly living space.

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.

We focus on Denver County but work all over the Front Range. Within Denver, backyard small homes are only allowed in certain zone districts. Contact us today to find out if your home qualifies. If not, we have other solutions that could work for you! Backyard small homes are allowed in some suburbs, too!

Denver County currently allows tandem homes and accessory units to be built in approximately 12% of lots in the city. This is due to strict and complicated zoning laws we can help you navigate. Even if your home isn’t in the correct zoning we can help you find a solution to your extra space needs. Pete & the team will be with you every step of the way to find the way to make the most of your Denver home.

Arvada and Golden allow tandem and accessory units on all single family lots! With a sizable backyard and a way for our crews to access the build site, we can help you build the carriage home or mother-in-law suite you’ve been dreaming of. Contact us today for your introductory consultation and get started building your dream backyard bungalow today!

Helseth and his crew were extremely efficient, fairly priced and friendly. What stood out for me was the obvious integrity of this company and the way the company runs as though it is a family.

"A" Rating Reviewer

Angie's List

Nearly perfect!

"A" Rating Reviewer

Angie's List

Pete Helseth is great to work with, finds the answers if he doesn’t know it off the top of his head. Pete is great at communicating and getting the work done in a professional manner. I am very pleased with the end result.

"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.