Coburg Home Addition Builder
Home Additions — built by Eugene’s garage & ADU master craftsman, serving Coburg since 1969.
Thinking about a home addition in Coburg? 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. Coburg is one of Oregon’s smallest incorporated cities and its historic village feel means the planning commission takes an active interest in new construction aesthetics — garage additions that match original home materials and roofline pitch sail through; modern metal-clad shops require more dialogue.
Building a home addition in Coburg
Coburg sits 8 mi north of Eugene on I-5. Has historic-character streets where design and materials matter, so a build has to fit the period without faking it. Building permits here go through City of Coburg — 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, Coburg is known for Coburg Road antique corridor and the McKenzie River confluence with the Willamette, and we tailor every build to fit the lot, the neighborhood, and how you actually live.
Home Additions in Coburg: 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 Coburg 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 City of Coburg and make the whole path simple.
Coburg home addition questions
How much does a home addition cost in Coburg, Oregon?
Home additions in Coburg typically range from $150 to $300 per square foot depending on complexity, finishes, and whether plumbing or electrical upgrades are needed. A 200-square-foot master bedroom addition might run $35,000–$65,000; a 400-square-foot family room with a bathroom runs $75,000–$130,000 or more. Red Umbrella provides a free on-site estimate so you have an accurate number before any design cost is incurred.
What counties does Red Umbrella serve?
Red Umbrella serves Lane, Linn, Benton, and Douglas counties in Oregon, with the majority of projects in the Coburg–Springfield metro area. Projects in outlying areas of those counties are considered on a case-by-case basis during the free consultation. Call (541) 515-3843 or request a consultation at the website to confirm service to your address.
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 Coburg.

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 Coburg
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 Coburg?
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