The ADU Collection

All of our prefab ADU homes are wood-based, and designed to be seamlessly installed in 1 day!

All of our Factory-Built ADU’s are made with wood-based, non-toxic materials

We are proud to bring both passive house certifiable ADU’s as well as code compliant ADU assemblies to the Colorado, Utah, Idaho, New Mexico, Washington and Arizona Mountain regions.

Based in Grand Junction, Colorado, our ADU line is focused on maintaining high quality affordable options, as well as offering the luxury home build option for each unit.

Frequently Asked Questions

What Does Phoenix Haus do?

    • Design services and project management, all the way from feasibility to installation 

      • Our in-house team collaborates with architects, engineers, and 3D CAD designers to get your home ready for production 

    • A ready to install, panelized home 

      • Each house is ‘panelized’ meaning the home is built in separate components designed to interlock on-site with the help of a crane

      • Our Alpha + and Alpha Base models are fully insulated during prefabrication, and anything that can be inspected prior to installation is 

      • We cut and deliver an on-site hardware and materials package ensuring your builder has everything needed to install your home 

    • Packaging and delivery of the panels and materials to your site using our own trailers or our trusted shipping partners depending on site access and the size of your home 

    • At least one Phoenix Haus on-site advisor will be present for the assembly of your home 

      • Our advisors aren't there to physically install your home, but guide the builder through the installation process by offering insight, performing quality checks, and helping to troubleshoot any difficulties that might arise 

  • While Phoenix Haus prefabricates your home, we won’t be the ones to install and finish it. That’s why we’ve spent years building a network of trusted, vetted contractors to get your project from installation to occupancy

    • When you purchase a Phoenix Haus package, we connect you with a reputable general contractor able to service your area

      • Before we work with a builder, we onboard them with our system, ensuring their up to speed and ready to install our package

      • The builder will be contracted to you directly

    • Once your home arrives at your site, the builder takes over with their labor and equipment, using an overhead crane to offload and install the panels

      • A Phoenix Haus advisor is sent to guide and assist your builder through installation. They work diligently to perform quality checks and make sure your contractor has the information they need to get the job done

    • After all the panels are set and your home is dried in, your contractor takes over work in full. It is the roll of the builder to take your home from installation to occupancy

      • This includes utilities, electrical and plumbing, interior and exterior finishes, etc.

    • Phoenix Haus will continue to check in as work continues, keeping lines of communication open with you and the builder.

How long does it take to build and ADU?

Our Production team builds each of our ADUs in the factory in one week, with quality checks at every assembly stage. From Permitting to Installation, traditional construction methods can take 1 year+ to achieve occupancy - but with our Prefab ADU Process - you can achieve Occupancy within 3-6 months.

Can I live in my ADU and rent out my main home?

Yes, living in your ADU while renting out your main home is often possible, as long as it aligns with local zoning and housing regulations. This offers a simpler, more sustainable lifestyle with lower utility costs and maintenance. ADUs are fully independent, functional living spaces, making them ideal for downsizing or generating rental income. With our Alpha base building system, your ADU will feature super-insulated, energy-efficient, and eco-friendly design, making your ADU affordable for the long term.

Can I use an ADU for rental income?

YES! ADUs are a great way to generate rental income—whether it's long-term tenants, vacation rentals, or affordable housing. 

With Phoenix Haus, you get fast installation, meaning you can start earning sooner! Our H2-7 Base model offers airtight construction, net zero energy use, and no energy bills within a year! Plus, it's off-grid capable for those doomsday preppers. 

Looking for a more budget-friendly option? Check out our H2-7 LITE model, with the ability to customize your finishes to help you control costs. 

What is the difference between Alpha Base and Alpha Lite?

Built off of our Alpha+® system, Alpha Base takes our signature passive house certifiable package and sizes it down to a more cost and space effective ADU option. Alpha Base utilizes smaller framing materials, saving money and maximizing livable square footage without sacrificing the energy efficiency and high R-values we’re known for.

Alternatively, Alpha Lite is the most streamlined package we’ve ever produced. Unlike our traditional system, our Alpha Lite ADUs are only framed and sheathed. Prioritizing versatility and lower price points, this package provides the speed and durability of a prefabricated structure without the upfront cost of cavity and exterior insulation. This system delivers a sturdy, robust frame, allowing you to pick the insulation and finish materials that work for you and your budget.

What is Non-Toxic Construction?

Traditional builders use spray foam insulation, along with various other toxic building materials that can release harmful chemicals, like VOC’s, into the air you breathe every day. At Phoenix Haus®, we choose non-toxic, wood-based materials and recycled cellulose insulation for safer, cleaner living. Build smarter, breathe healthier.

Non-Toxic construction is foundational to Phoenix Haus®. After his own childhood battle with mold-related sickness, our Founder, Bill McDonald set out to find a healthier way to build homes. Watch our Origin Story to learn more.

How do we create Efficiency In Design?

Traditionally, the design phase of a project is often rushed to meet deadlines. Speed is prioritized over accuracy, and communication between the various parties involved can often be sparce. There is little incentive to get everything right ahead of construction, especially when the customer can be billed for any rework that has to be done.

Phoenix Haus® is different. We build your home twice—first as a detailed digital model, then as the physical structure. Using advanced computer-aided design, we create a one-to-one 3D model of your home. Our in-house design team meticulously reviews this model, along with the architectural and engineering plans, through multiple rounds of refinement. All before the first board is even cut. This commitment to perfection upfront eliminates the costly fixes and change-orders that plague the residential construction industry. We put in the work to do it right the first time, so you don’t have to pay to have it done a second time. In fact, we guarantee no change-orders.