Room Additions & Suites in Millersburg, OR
Home Additions — built by Eugene’s garage & ADU master craftsman, serving Millersburg since 1969.
Thinking about a home addition in Millersburg? 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 Linn County since 1969. Millersburg splits electrical permits to Linn County just like Lebanon does — knowing which inspector to call for which trade saves weeks on a garage or addition project here.
Building a home addition in Millersburg
Millersburg sits 28 mi north of Eugene via I-5. Blends established suburban lots with larger parcels on its edges — a familiar mix for siting a new build. Building permits here go through City of Millersburg — 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, Millersburg is known for ATI Specialty Alloys industrial campus, I-5 north Albany, incorporated 1974 to protect industrial zoning, and we tailor every build to fit the lot, the neighborhood, and how you actually live.
Home Additions in Millersburg: 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 Millersburg 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 Millersburg and make the whole path simple.
Millersburg home addition questions
How much does a home addition cost in Millersburg, Oregon?
Home additions in Millersburg 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 Millersburg–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.
Does Red Umbrella require a large deposit upfront?
Red Umbrella’s payment schedule is outlined in the written contract before work begins, typically structured around project milestones rather than a single large upfront payment. Oregon law limits contractor deposits on residential projects, and Red Umbrella follows those rules. Your contract will show exactly when each payment is due relative to construction progress.
We also build these in Millersburg.

ADU Builder
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Garage Conversion
A garage conversion is the fastest, most affordable way to add finished living space.
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Custom Garage
A custom garage means covered parking, a real workshop, RV storage, or an apartment above.
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 home addition in Millersburg?
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