Blue River ADU Builder
ADU Builder — built by Eugene’s garage & ADU master craftsman, serving Blue River since 1969.
Thinking about an ADU in Blue River? A backyard ADU adds rental income, room for family, and lasting property value — and Red Umbrella has been building garages, ADUs, and additions across Lane County since 1969. Blue River was heavily impacted by the 2020 Holiday Farm Fire, and many properties are in rebuild mode — owners reconstructing garages or ADUs on fire-damaged lots benefit from Lane County’s streamlined post-disaster permit pathways and Oregon’s wildfire rebuild provisions.
Building an ADU in Blue River
Blue River sits 45 mi east of Eugene on Highway 126 at the Cascade foothills. Is up in the foothills, where slope, snow load, and wildfire-resilient construction all come into the plan. Building permits here go through Lane County — a process we know well — and for an ADU, that shapes how utilities connect and whether a detached cottage or an attached unit fits best.
Locally, Blue River is known for Blue River Reservoir and the Aufderheide National Scenic Byway, and we tailor every build to fit the lot, the neighborhood, and how you actually live.
ADU Builder in Blue River: what we build
We build detached backyard cottages, attached units, and ADUs above or beside a garage — designed, permitted, and built end to end.
- Detached & attached ADUs, 400–900+ sq ft
- Garage-to-ADU conversions (our specialty)
- Permits, utilities & site work handled
- Up to 120% financing — cash-flows as a rental
Why Blue River homeowners choose Red Umbrella
- Garages and ADUs under one roof — the rare shop that masters both, so a garage-with-a-suite is one project, one crew.
- Master Electrician in-house — owner Bari Swartz wires it himself, to code, no waiting on a sub.
- Building since 1969 — you work directly with Bari, not a sales rep or a rotating cast of subs.
- Permits handled & up to 120% financing — we know Lane County and make the whole path simple.
Blue River ADU questions
How big can an ADU be in Blue River, Oregon?
In Blue River, an ADU can be up to 800 square feet or 10% of the total lot area, whichever is less. Attached ADUs and garage-conversion ADUs follow slightly different formulas, so your specific zoning district and lot size determine the exact maximum. Red Umbrella’s team reviews your parcel during a free consultation and calculates the largest unit your site can accommodate.
How do I start a garage, ADU, or addition project with Red Umbrella?
The first step is a free on-site consultation with Bari Swartz, during which he evaluates your property, discusses your goals, and outlines realistic options and costs. From there, Red Umbrella prepares a detailed written estimate and, once agreed, handles design, permitting, and construction through final inspection. Call (541) 515-3843 or use the contact form on the website to schedule your free visit.
Does building an ADU or addition increase my home’s value?
Adding an ADU or a well-designed addition generally increases a home’s resale value in the Blue River market, though the increase depends on location, finishes, and buyer demand. An ADU that generates rental income is especially appealing to buyers who can offset their mortgage with rent. Red Umbrella builds to quality standards that hold up over time and support strong appraisals.
We also build these in Blue River.

Garage Conversion
A garage conversion is the fastest, most affordable way to add finished living space.
Learn more →
Custom Garage
A custom garage means covered parking, a real workshop, RV storage, or an apartment above.
Learn more →
Home Additions
A seamless addition adds the room you need without the cost and upheaval of moving.
Learn more →Trusted across the valley.
"Bari built us a fine, 600 sq ft cottage (ADU) in our back yard. Helpful from start to finish through the permit process."
"Our garage was crushed by a tree in the ice storm. Red Umbrella, garage specialists, were perfect for the job."
"Bari at Red Umbrella is a solid contractor! We hired him to remodel our garage in College Hill, and it became a special place to live and enjoy."
Planning an ADU in Blue River?
Bari will look at your lot and give you an honest number — permits handled, up to 120% financing, usually a reply within one business day.
Get My Free Estimate → Call (541) 515-3843