ADU Design and Building Services in Portland with ADU-PDX
Whether the goal is creating a cozy space for an Airbnb guest, converting an unused garage into a comfortable in-law suite, or adding a detached ADU to maximize property value, ADU-PDX brings decades of expertise to every project. As a seasoned ADU builder serving the Portland metro area, they specialize in transforming underutilized spaces into beautiful, functional living units.
ADU-PDX has designed and built well over a hundred accessory dwelling units across the Portland region, working with both families and developers. Their portfolio includes garage conversion projects, basement transformations, spare bedroom conversions, and fully custom detached ADU builds on empty lots. As an experienced accessory dwelling unit builder, they understand that every property and every client has unique needs — and they design accordingly.
With over 30 years of architectural experience, ADU-PDX approaches each project with a clear philosophy: designing the right thing for the right site. This means every ADU they create is thoughtfully tailored to the specific lot, zoning requirements, and lifestyle goals of the property owner.
From Garage Conversions to Backyard Cottages
ADU-PDX handles a wide range of project types, making them a versatile ADU contractor for homeowners throughout the Portland area. Their services include:
- Garage conversions into livable ADU spaces
- Basement and spare room conversions
- Detached backyard cottage builds
- Stand-alone ADUs on vacant or underused portions of a lot
- Custom-designed and permit-ready ADU projects
As a trusted granny flat builder and in-law suite builder, ADU-PDX has helped countless families create independent living spaces that keep loved ones close without sacrificing privacy. For investors and developers, their ADUs have proven to be efficient, income-generating assets — with one documented project achieving a 70% increase in rental income after an ADU was added to an existing rental property.
That particular project involved adding a detached ADU to a 50 x 100-foot lot that already had a rental house on it. The newly designed ADU featured separate entryways and a separate yard from the main house, creating two fully independent living units on a single property.
Navigating Permits and Zoning So You Don't Have To
One of the most valuable aspects of working with ADU-PDX is their deep knowledge of local zoning regulations and permitting processes. They understand the nuances between different residential zoning classifications — such as R2.5 and R10 — and work directly with the city or county on behalf of their clients to ensure the process moves smoothly.
Getting started with ADU-PDX is straightforward. If a property is zoned for single-family residential use and the ADU will be used as a living space, that's essentially all it takes to begin the conversation. From there, they work closely with clients to understand their goals, bring their vision to life through thoughtful design, and manage the permitting and zoning process from start to finish.
For anyone in the Portland metro area looking for a reliable backyard cottage builder or experienced ADU contractor, ADU-PDX offers the combination of architectural expertise, local knowledge, and hands-on project management that makes the entire ADU journey as seamless as possible.
