Halsey ADU Builder
ADU Builder — built by Eugene’s garage & ADU master craftsman, serving Halsey since 1969.
Thinking about an ADU in Halsey? A backyard ADU adds rental income, room for family, and lasting property value — and Red Umbrella has been building garages, ADUs, and additions across Linn County since 1969. Halsey’s expansive agricultural lots make detached garages and shop buildings straightforward — setbacks from property lines are rarely a constraint on these generous parcels.
Building an ADU in Halsey
Halsey sits 28 mi north of Eugene via I-5. Is surrounded by working farmland where efu zoning and generous setbacks shape what — and where — you can build. Building permits here go through City of Halsey — 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, Halsey is known for OR-99E & OR-228 junction, flat grass-seed and grain farm country, and we tailor every build to fit the lot, the neighborhood, and how you actually live.
ADU Builder in Halsey: 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 Halsey 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 Halsey and make the whole path simple.
Halsey ADU questions
What is an ADU and can I build one on my Halsey property?
An ADU (accessory dwelling unit) is a second, self-contained home on the same lot as a primary residence, and most Halsey residential lots are eligible to have one. Under current City of Halsey rules there is no owner-occupancy requirement, so landlords and investors can build ADUs without living on site. Maximum size is 800 square feet or 10% of the lot area, whichever is smaller, and most properties need no additional parking space under current code. Red Umbrella offers free on-site consultations to confirm your lot’s specific eligibility.
What counties does Red Umbrella serve?
Red Umbrella serves Lane, Linn, Benton, and Douglas counties in Oregon, with the majority of projects in the Halsey–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.
Can I finance Halsey system-development charges for an ADU?
Yes — SDCs (which vary by city and county) can be financed through programs like HFS Financial rather than paid out of pocket at permit issuance. Including SDCs in your project loan keeps cash available for other needs and spreads the cost across the loan term. Red Umbrella will help you understand how SDCs fit into your overall project budget.
We also build these in Halsey.

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 Halsey
We build throughout Linn 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 Halsey?
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