Basement ADUs
Basement ADUs are an excellent choice for Portland homeowners who want to get additional utility out of their basements and increase their living space and the value of their homes!
where your dream ADU meets seamless execution & lasting impact
Your ADU journey starts here: from dream concept to reality, you tell us your vision — and we’ll handle the rest.
One Inspector
Faster Permits
Quick Timelines
Better Results
Next-level living:
ADU building redefined for a better tomorrow.
Whether you’re looking for cash-flowing rental space, or age-in-place/additional living space for friends and family, an Accessory Dwelling Unit, commonly referred to as an ADU or Accessory Structure, will increase the value of your property while also generating supplemental income or providing housing for loved ones.
But, while building an ADU is a guaranteed way to maximize your property ROI, it can be a daunting undertaking that presents a diverse number of challenges, including obtaining a permit, design constraints, unforeseeable costs, and more.
That’s where we come in.
“Innovative design that wows, construction that stands the test of time, and limitless opportunities for decades to come.”
A One-Stop-Shop for Your ADU
We manage every detail of the ADU construction process, including project analysis, design, engineering, cost evaluation, permit walkthrough, and the build — from concept, all the way to key handover.
But we don’t just manage every detail — we also collaborate with you on all the fun stuff to ensure a personalized experience! As for all the not-so-fun-stuff…
We roll up our sleeves and get the job done, while providing 100% transparency every step of the way so you’re never in the dark about costs or timeline.
The result is a unique ADU that aligns with your desires and financial plan, and is built for lasting impact.
If you’re overwhelmed by the complexities of ADU construction, have a vision for what you want but aren’t sure if it’s possible, or are just exploring the idea of growing your property value with an ADU, you’re in the right place.
Your Trusted Partner
We’re here to guide you from start to finish, accompanying you through:
Site Evaluation
Selecting ADU Type
Preliminary Interior & Exterior Design
Cost Estimate & Financing
Permit Application & Processing
Finalizing Design & Ensuring Compliance
Construction
Final Inspection & Key Handover
How We Work:
Our Unparalleled ADU Design & Build Process
We’re a licensed and bonded Portland ADU design team & builder specializing in the greater Portland, Oregon and Willamette Valley areas.
We work with a diverse team of craftsmen to handle the A — Z of your ADU construction, so you can sit back, relax, and actually enjoy watching your dream ADU become your backyard (or in-home) reality.
As an elite FIR contractor, we have the exclusive privilege of working with ONE inspector — which means that for many of our projects, we get faster permits and inspections, and you get an expedited construction timeline, all while improving financial efficiencies!
We Use Collaborative Remote Technology
So you get immediate access to schedules, up to date onsite photos, and cost summaries! Leave the design & build of your ADU in our experienced hands, while easily keeping your finger on the pulse.
We offer 3D modeling during design, and remote access to project management right from your phone!
Hear what some of our customers have to say:
You can’t go wrong with ADU Design & Build
“ADU Design & Build did a remarkable job in designing and building our ADU (which became a very successful AirBnB).
The quality of the design and craftsmanship was impeccable and has received many compliments from our guests.”
We are very happy with their work
“ADU Design & Build did a fantastic job on our garage conversion ADU.
They had great communication with quality craftsmanship, and all done on time.
We are very happy with their work and would definitely recommend them to anyone considering a contractor for their ADU.”
You should absolutely trust ADU Design & Build with your project
“I worked with this group for two projects. Both were done extremely well.
They provided us with a detailed bid that was very competitive and stayed on top of all of the details for us. They also provided regular updates and responded quickly if we ever had questions.”
Types of ADUs We Build:
Rooted in Expertise & Innovation
Dedicated to Quality Craftsmanship & Sustainability
144
Projects Completed
Detached ADUs /
Accessory Structures
Garage Conversion
ADUs
Basement
ADUs
Committed to
Energy-Efficiency & Smaller Carbon Footprint
At an average of 800 sq feet, ADUs are incredibly energy-efficient by nature (just another reason we love building them). That said, there’s always more you can do to make your ADU more environmentally-friendly and ensure it’s built with optimal sustainability in mind — and it all starts with eco-conscious design.
That’s why when you work with us, we’ll happily advise you on the best energy-efficient features and green building materials from the getgo — so your ADU will have the lowest possible electric bill and put less drain on the Earth’s resources. Name a better win-win — we’ll wait.
Book a FREE ConsultationFind The Right ADU For Your Needs:
Passive Income Producing ADU
Our client Chris partnered with us for an airy and serene two-bedroom backyard ADU in Southeast Portland, and now has 800 sq feet of luxurious additional living space that also serves as a reliable income stream.
Age-In-Place ADU
Our clients Dee and her family moved to McMinnville and bought a lovely home with the intention of building out a garage ADU for Dee to age-in-place. We constructed a light-filled one-bedroom and fully-equipped ADU for her. Now, the whole family is living together on one property, fulfilling their long-time dream of creating multigenerational housing to build stronger bonds and save on housing expenses!
Additional Housing | ADU For Friends & Family
Our client Courtney partnered with us to build a charming ADU on her parents’ property so she can raise her child with assistance from her family! Thanks to the solar panels as the finishing touch, this highly energy-efficient ADU is now an incredibly cost-effective living space for her and her kiddo, while giving them both all the added benefits of being close to Mom & Dad, or Grandma & Grandpa.
Limitless Opportunities Await
Start Your ADU Journey Today!
ADU
“I adore this team of contractors. I’ve done two projects with them — most recently an outdoor remodel.
You can really trust that they have fair prices, are choosing quality materials and they have an attention to detail to get the job done right. Any changes or adjustments they walk through with you and are clear on cost. They respect your opinion and have creative, affordable solutions to problems.
They know and work with any subcontractors to make sure the work is done right and if there is a problem it’s fixed immediately. They treat their workers right and I trust them and would choose them for all of my house projects.”
START YOUR ADU JOURNEY!
We love that you’re considering our premier design & build process to make your dream ADU a reality.
Whether you’re looking to generate additional passive income, create multigenerational housing for your loved ones, or add more valuable living space to your property for yourself and/or visitors, we can’t wait to hear from you.
Please complete and submit the form below, and we will be in touch within 3 business days.
If you're unsure about completing the form, you're welcome to email our founder and lead estimator directly at trevor@adudesignandbuild.com.