Lowell ADU Builder
ADU Builder — built by Eugene’s garage & ADU master craftsman, serving Lowell since 1969.
Thinking about an ADU in Lowell? 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. Lowell is perched between two reservoirs and the hillside topography means many lots have slope challenges — garage additions here often require a graded pad or retaining wall before framing begins, and moisture management details matter on the shaded north-facing lots.
Building an ADU in Lowell
Lowell sits 22 mi southeast of Eugene on Highway 58. Sits near the water, where shoreline setbacks and lakefront siting call for a builder who has navigated them before. Building permits here go through City of Lowell — 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, Lowell is known for Dexter Reservoir and Fall Creek Reservoir on the Middle Fork Willamette, and we tailor every build to fit the lot, the neighborhood, and how you actually live.
ADU Builder in Lowell: 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 Lowell 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 Lowell and make the whole path simple.
Lowell ADU questions
Can I rent out an ADU in Lowell?
Yes — Lowell ADUs can be rented on both long-term and, where permitted by local ordinance, short-term bases. There is no owner-occupancy rule requiring you to live on site, so the ADU can function as a fully independent rental property. Red Umbrella builds ADUs with landlord-friendly features like separate entrances, dedicated meters, and durable finishes that minimize maintenance.
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.
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 Lowell.

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 →ADUs near Lowell
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 an ADU in Lowell?
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