Santa Clara Home Addition Builder
Home Additions — built by Eugene’s garage & ADU master craftsman, serving Santa Clara since 1969.
Thinking about a home addition in Santa Clara? A seamless addition adds the room you need without the cost and upheaval of moving — 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 a home addition 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 a home addition, that shapes how the new space ties into existing rooflines, the foundation, and the permit path.
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.
Home Additions in Santa Clara: what we build
We build room additions, primary suites, second stories, and bump-outs that match your home’s lines like they were always there.
- Room & multi-room additions
- Primary suites with spa baths
- Second stories, engineered & permitted
- Sunrooms, bump-outs & matched rooflines
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 Clara home addition questions
Can Red Umbrella match my existing home’s exterior when adding an addition?
Yes — matching the existing home’s siding, roofing, trim, and window style is a standard part of every Red Umbrella addition project. Bari Swartz inspects the existing materials during the consultation and sources compatible products, including discontinued styles when necessary. The goal is an addition that looks like it was always part of the original home.
Does Red Umbrella handle all the inspections during construction?
Yes — Red Umbrella schedules and manages every required municipal inspection, including foundation, framing, rough electrical, rough plumbing, insulation, and final inspection. The homeowner does not need to coordinate with City or county inspectors; Red Umbrella handles all communication and corrects any inspection comments before re-inspecting. You receive a copy of all final inspection approvals.
How do ADU rental returns compare to the cost of construction in Santa Clara?
Santa Clara arean ADUs commonly rent for $1,200–$2,000 per month depending on size, location, and finishes, which can generate $14,000–$24,000 per year in gross rental income. At those rates, a $60,000 garage-conversion ADU can recoup its full cost within 3–5 years in rental income alone. Red Umbrella does not guarantee rental rates, but can connect you with local property managers who know the Santa Clara market.
We also build these in Santa Clara.

ADU Builder
A backyard ADU adds rental income, room for family, and lasting property value.
Learn more →
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 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 a home addition 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