ADU Builder Serving Santa Clara, OR
ADU Builder — built by Eugene’s garage & ADU master craftsman, serving Santa Clara since 1969.
Thinking about an ADU in Santa Clara? 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. Santa Clara is a dense unincorporated suburb directly north of Eugene where residential lots average 6,000–8,000 sq ft — tight enough that detached ADUs must be carefully sited to meet Lane County’s 5-ft side-yard setback; the area’s flat terrain makes foundation work straightforward.
Building an ADU in Santa Clara
Santa Clara sits 4 mi north of Eugene along River Road. Blends established suburban lots with larger parcels on its edges — a familiar mix for siting a new build. 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, Santa Clara is known for the Willamette River north channel and the River Road corridor, and we tailor every build to fit the lot, the neighborhood, and how you actually live.
ADU Builder in Santa Clara: 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 Santa Clara 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.
Santa Claran ADU questions
Can I convert my garage into an ADU in Santa Clara?
Yes — converting an attached or detached garage into a livable ADU is one of the most cost-effective ways to add a rental unit or guest suite in Santa Clara. A garage-to-ADU conversion typically costs $50,000–$85,000 depending on the existing structure’s condition, desired finishes, and whether plumbing must be added. Red Umbrella specializes in garage conversions and handles permits, electrical, framing, insulation, and finish work under one contract.
Does Red Umbrella pull permits for all of its work?
Yes — Red Umbrella pulls all required building, electrical, plumbing, and mechanical permits for every project. Bari Swartz holds Oregon Contractor’s license CCB #210412 and a Supervisory Master Electrician credential, covering structural and electrical work without additional subcontractors. Unpermitted construction creates serious liability for homeowners and is not something Red Umbrella does.
What does “financing up to 120%” mean for a construction project?
Financing up to 120% of project cost means the loan can cover not only the construction contract amount but also an additional 20% to account for incidentals such as permits, system-development charges, landscaping after construction, or minor scope changes. This helps homeowners avoid out-of-pocket surprises during construction. HFS Financial, a lender partner of Red Umbrella, offers this type of product for qualifying borrowers.
We also build these in Santa Clara.

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 →ADUs near Santa Clara
We build throughout Lane County — here are nearby towns we also serve:
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 Santa Clara?
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