Accessory Dwelling Units

Accessory Dwelling Units

Often called mother-in-law suites, backyard cottages, garage, or basement apartments, these areas add to your functional living space and increase the value of your home.

Accessory Dwelling Units Longmont CO

Our Accessory Dwelling Units: Built to Last

An ADU is part of the property of your main home. If you are thinking about having one built, whether for your parents, guests or potential tenants, Koeppen Construction can lend you the assistance you need. We have years of experience in building accessory dwelling units in Longmont, CO. If you are looking for a contractor to get the job done, reach out to us.

Interior Planning

Our experience in building ADUs is built on years of helping homeowners get exactly the home they want. Whether you’re thinking about adding small self-sufficient units or backyard cottages in Longmont, CO, we find ways to make your ideas come true. With our help, you won’t have to worry about mistakes with the design that could derail the entire project later.

Efficient Designs

We value efficiency in our work. That’s why our designs reflect the same. We want to increase the efficient flow of foot traffic in your space, so you can make the most out of every inch in the room. Whether working on an extensive renovation or basement apartments in Longmont, CO, we are experts at handling these projects. We know what it takes to make plans work, so we can guide you along to ensure you make the best possible decisions.

Professional Staff

Our certified contractors are trained to deliver successful outcomes. We employ a crew of skilled and experienced contractors who know how to get the job done and done well, so you won’t need to worry about mistakes. With us by your side, you can make decisions with confidence, knowing that we’re there to guide you through the process.

Extensive Portfolio

We’ve completed many ADUs for clients over the years. If you want to learn more about these units and are interested in hiring us to create one for you, call us.

We also serve Boulder, Erie, Lafayette, Louisville, Frederick, Firestone & surrounding areas.


Building an ADU (Accessory Dwelling Unit) in Longmont, CO, offers several benefits. It provides additional rental income, increases property value, and offers flexible living arrangements for family members or guests. ADUs also allow homeowners to maximize space without the need for major renovations or expansions.
There are various types of Accessory Dwelling Units (ADUs) available in Longmont, CO, including detached ADUs, attached ADUs (such as basement or garage conversions), and tiny homes. Each type offers unique benefits and can be customized to suit your needs.
ADUs are permitted in Longmont, CO, but regulations vary depending on zoning and local ordinances. It’s essential to check with the city’s planning department to understand specific requirements and obtain necessary permits before building an ADU.
Yes, you typically need a permit to build an ADU in Longmont, CO. Permit requirements vary based on local zoning and building codes. It’s essential to consult with the city’s planning department to ensure compliance and obtain the necessary permits before starting construction. Koeppen Construction can guide you through the permitting process.
Yes, you can rent out your ADU in Longmont, CO, as long as it complies with local regulations and zoning ordinances. Renting out an ADU can provide additional income and help offset construction costs. Koeppen Construction can assist in designing and building an ADU suitable for rental purposes.
Design considerations for an ADU in Longmont, CO, include maximizing space efficiency, ensuring compliance with local zoning regulations, and creating a comfortable living space. Other factors to consider include privacy, access, and the overall aesthetic to complement the main residence.
Yes, financing options are available for building an ADU in Longmont, CO. These may include home equity loans, construction loans, or refinancing. Additionally, some municipalities offer incentives or grants for ADU construction. Consult with financial institutions and local authorities to explore available options.
Common uses for an ADU (Accessory Dwelling Unit) include rental income, multigenerational living, home office space, or guest accommodations. They can provide flexibility and value to homeowners in Longmont, CO, offering additional living space without the need for major renovations.
ADUs can increase property value by providing additional rental income potential, accommodating multigenerational living, or enhancing the property’s overall functionality. In Longmont, CO, ADUs are sought after for their versatility and can positively impact home values by meeting diverse housing needs without extensive renovations.
Yes, existing structures like garages, basements, or detached buildings can often be converted into ADUs. This process can be more cost-effective and less time-consuming than building from scratch. In Longmont, CO, homeowners can explore converting these spaces to ADUs to maximize property use and add value without major construction.