Swisshome ADU Builder
ADU Builder — built by Eugene’s garage & ADU master craftsman, serving Swisshome since 1969.
Thinking about an ADU in Swisshome? 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. Swisshome sits deep in the Coast Range where the North Fork Siuslaw River meets the main stem; lots are narrow, heavily wooded, and require site-specific engineering for any new foundation due to steep sideslopes and high-rainfall soil conditions — every project here benefits from a geotechnical review before design begins.
Building an ADU in Swisshome
Swisshome sits 45 mi west of Eugene on Highway 36 in the Coast Range. Follows a river corridor, so floodplain mapping and riparian setbacks are real factors we plan around from day one. 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, Swisshome is known for the North Fork Siuslaw River confluence and the dense Coast Range corridor on Highway 36, and we tailor every build to fit the lot, the neighborhood, and how you actually live.
ADU Builder in Swisshome: 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 Swisshome 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.
Swisshome ADU questions
What is an ADU and can I build one on my Swisshome property?
An ADU (accessory dwelling unit) is a second, self-contained home on the same lot as a primary residence, and most Swisshome residential lots are eligible to have one. Under current City of Swisshome rules there is no owner-occupancy requirement, so landlords and investors can build ADUs without living on site. Maximum size is 800 square feet or 10% of the lot area, whichever is smaller, and most properties need no additional parking space under current code. Red Umbrella offers free on-site consultations to confirm your lot’s specific eligibility.
What is the timeline from consultation to permit approval for an ADU in Swisshome?
After your free consultation and once Red Umbrella prepares drawings (typically 2–4 weeks), the permit application is submitted to City of Swisshome Development Services, where plan review takes approximately 6–16 weeks for residential projects depending on current workload. Total time from first call to permit-in-hand is usually 3–5 months. Red Umbrella tracks your application status and responds promptly to any reviewer comments to minimize delays.
How much does it cost to build an ADU or addition, and can I finance it?
Construction costs range from roughly $50,000 for a garage conversion to $230,000 or more for a new detached ADU, depending on size and scope. Red Umbrella works with HFS Financial, which offers financing up to 120% of project cost to cover construction and some soft costs without requiring home equity. A free on-site estimate gives you the exact number before you apply for financing.
We also build these in Swisshome.
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 Swisshome?
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