Wren Garage Builder — Shops, RV Bays & More
Custom Garage — built by Eugene’s garage & ADU master craftsman, serving Wren since 1969.
Thinking about a custom garage in Wren? A custom garage means covered parking, a real workshop, RV storage, or an apartment above — and Red Umbrella has been building garages, ADUs, and additions across Benton County since 1969. Wren has a Benton County community plan that shapes allowable land uses — we review those rural-UGB standards before design so your garage or shop doesn’t trigger a variance.
Building a custom garage in Wren
Wren sits 60 mi northwest of Eugene via I-5 & US-20. 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 Benton County — a process we know well — and for a custom garage, that shapes the foundation, setbacks, and whether a detached shop or an attached garage fits the lot.
Locally, Wren is known for Marys River, US-20 & OR-223 junction, established via Oregon Pacific Railroad 1886, and we tailor every build to fit the lot, the neighborhood, and how you actually live.
Custom Garage in Wren: what we build
We build detached and attached garages — 1 to 4 car, heated shops, tall RV bays, and garages with a finished apartment above.
- Detached & attached, 1–4 car
- Heated shops, RV bays & pole buildings
- Garage with an apartment or suite above
- Any roof style — gable, hip, gambrel, more
Why Wren 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 Benton County and make the whole path simple.
Wren custom garage questions
Can I add a second story or living space above a new garage?
Yes — a garage with living space above is called a carriage house or garage ADU, and Wren code generally allows it within the applicable ADU size limits. Adding a habitable second story increases cost significantly (typically $80,000–$160,000 total for garage-plus-unit), but the combination maximizes property use and rental income potential. Red Umbrella designs and builds garage-plus-ADU combinations as a single integrated project.
What is the timeline from consultation to permit approval for an ADU in Wren?
After your free consultation and once Red Umbrella prepares drawings (typically 2–4 weeks), the permit application is submitted to City of Wren 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 Wren.

ADU Builder
A backyard ADU adds rental income, room for family, and lasting property value.
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Garage Conversion
A garage conversion is the fastest, most affordable way to add finished living space.
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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 a custom garage in Wren?
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