Portland ADU / Jason Allen Contracting, LLC specializes in ADU builds and residential renovations, aligning design, permitting, and construction into a clear, step-by-step process for Portland homeowners.
Local ADU focus with experience in Portland zoning and permits. Clear scopes and schedules, responsive communication, and attention to build quality from foundation to finishes. Coordination with designers and trades to keep decisions timely and budgets transparent.
Based in Portland, Oregon and working across neighborhoods citywide and nearby communities.
Services include ADU construction (detached, attached, and conversions), garage and basement conversions, kitchen and bath renovations, interior and exterior remodeling, framing and finish carpentry, and project management through permitting and inspections.
Customers consistently note organized project management, quality craftsmanship, and reliable follow-through. The company maintains a high average rating with numerous positive reviews highlighting communication and clean workmanship.
Jason really showed up for us! We had a pipe burst and damaged a lot of our floor and subfloor, right before the holidays. Jason was able to start work promptly, finish on time, and stayed within our budget. He explained every thing that needed to occur, updated me with photos, and couldn’t have been kinder during a period of stress for us. I’ll be having him back for our future planned projects!
We hired Jason Allen to repair old wooden siding in coordination with a roof replacement project on our house. From the start Jason was responsive, very knowledgeable and patient with us as we worked through the details of the job. His recommendations for type of material, sequencing and coordination was very valuable. His crew worked efficiently, professionally and was extremely sensitive to working safely and limiting the disturbance during construction. I would definitely hire Jason again to do additional work.
Jason did an unbelievable job transforming our home, particularly in renovating our bathroom and kitchen. Throughout the process, he was a clear communicator timelines, next steps, and budget. He would often point out details that we would never have noticed, explaining the benefits, necessity, or drawbacks of each design choice. Remodeling our 1909 home came with a few surprises (as with most older homes), and his knowledge and quality craftsmanship really showed in how he adapted to each challenge. I would highly recommend using him as a general contractor for any of your projects in Portland.
My newest go-to general contractor ???.Jason and his crew renovated the living space and kitchen of our new home before we moved in… Resurfaced everything in the kitchen, new lighting everywhere, drywall/paint/trim fixes/remodeled. He even had a welder help design us a custom railing for our stairs. Also updated our shared bath. Fast, clean, and easy to communicate with. He’ll be back to do our ADU next year!
I am currently updating my 1920s home and I have dealt with my fair share of contractors along the way. It was such a relief to find Jason. He took the bare bones of my basement and converted it into a beautiful and functional living space (two bedrooms, utility closets, egress windows, new basement entry, plumbing, heated flooring, bathroom, stairs, etc). I love it so much that I moved my master bedroom to the basement!Jason is an artist by trade. He is remarkably creative and was so helpful along the way with design suggestions. The confidence he instilled helped me understand the future of the finished product. He is incredibly skilled in the complicated issues that come along with renovating a home.I appreciated that Jason was a solid communicator. He kept me in the loop about the construction schedule so I knew what progress was being made. He was willing to meet up and discuss budget along the way to make sure I felt comfortable with the projection of the remaining work.Jason and his skilled subcontractors (Ari, you are the best) were punctual and willing to walk me through the plan. People showing up when they say they will; there is so much value in that!Jason is passionate about his work. What I truly appreciate about Jason is that he was able to take my vision and turn it into a reality. My basement is better than I envisioned. I would absolutely work with Jason again.
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