Backyard ADUs in Goshen, Oregon
ADU Builder — built by Eugene’s garage & ADU master craftsman, serving Goshen since 1969.
Thinking about an ADU in Goshen? 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. Goshen is an older unincorporated community on the south Eugene fringe with a mix of small rural lots and commercial land along I-5; residential parcels here are close enough to Eugene to be served by county-routed utilities, which simplifies ADU permitting compared to more remote areas.
Building an ADU in Goshen
Goshen sits 7 mi south of Eugene along I-5 at the Goshen interchange. Is rural and largely unincorporated, which usually means county-level permitting, septic siting, and room for larger shops and outbuildings. 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, Goshen is known for the I-5 south Eugene interchange and the Coast Fork Willamette corridor, and we tailor every build to fit the lot, the neighborhood, and how you actually live.
ADU Builder in Goshen: 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 Goshen 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.
Goshen ADU questions
What is an ADU vs. a DADU — are they the same thing?
DADU stands for “detached accessory dwelling unit” and refers specifically to a freestanding ADU separate from the primary home, such as a backyard cottage or garage apartment. All DADUs are ADUs, but not all ADUs are DADUs — attached ADUs and JADUs are also ADUs but share a wall or are interior to the main house. Red Umbrella builds both attached and detached ADU types throughout Goshen and Lane County.
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.
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 Goshen.

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 Goshen?
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