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!
A garage ADU (Accessory Dwelling Unit) is a converted garage transformed into a fully functional Accessory Dwelling Unit with its own entrance, kitchen, bathroom, and living space. When designed properly, it feels and functions like a completely separate residence.
For many Portland homeowners, a garage ADU becomes:
What once stored boxes and bikes can become a thoughtfully designed living space that works for decades to come.
While garage ADUs are often one of the most cost-effective ADU options, they require careful planning to ensure they feel like a true home – not just a converted space..
That includes:
Our goal is simple: when someone walks into your garage ADU, it should feel intentional – not improvised.

Building a garage ADU can feel exciting and overwhelming at the same time. That’s why we manage the entire process in-house – so you don’t have to coordinate multiple contractors or navigate permitting alone.
As a licensed and bonded Portland ADU builder – and a proud FIR contractor – we handle:
We also use collaborative construction software that gives you real-time access to schedules, build progress photos, and cost summaries – right from your phone.
Premium construction isn’t just about craftsmanship. It’s also about communication, organization, and knowing exactly where your project stands.
Learn more about our design & build team or explore our completed Portland ADU projects.
Because the structure already exists, garage conversions can often be more budget-conscious than building a detached unit from the ground up.
A well-designed garage ADU can significantly enhance market appeal and long-term resale value.
Garage ADUs are frequently used as long-term rental units, creating consistent passive income.
Whether for family, guests, or future needs, a garage ADU adds adaptable living space without requiring additional land.
Garage conversions aren’t as simple as adding drywall and finishes. Key factors include:
During your free consultation, we assess your existing structure and provide clarity on:
A garage ADU may be a strong fit if:
In some cases, a detached or basement ADU may offer more flexibility depending on your goals.
A site evaluation helps determine the best path forward.
A garage ADU is an existing garage converted into a fully functional Accessory Dwelling Unit with its own kitchen, bathroom, and living space.
Costs vary based on structural condition, upgrades required, and finish level. During your consultation, we provide a realistic cost range tailored to your property.
Yes. Garage ADU conversions must meet Portland’s ADU zoning and building code requirements. We manage the permitting process on your behalf.
In many cases, yes. A well-designed garage ADU can enhance resale value and market appeal while also creating rental income potential.
Often, yes – because the primary structure already exists. However, costs depend on the condition of the garage and required upgrades.
If you’re considering converting your garage into a fully independent living space, we’d love to explore what’s possible.
From initial feasibility through final inspection, our team is here to make the process organized, transparent, and built for lasting impact.