Backyard ADUs, designed & built to live in.
An ADU is a complete, self-contained home on the same lot as your house — a backyard cottage, a suite above the garage, or a converted garage. Rental income, room for family, or a place to age in place. Designed, permitted, and built by one master craftsman.
Key Takeaways
- ADUs in Eugene run roughly $130k–$230k ground-up, or $50k–$85k as a garage-to-ADU conversion.
- Oregon allows ADUs on most single-family lots — generally no owner-occupancy and no added off-street parking required.
- Red Umbrella designs, permits, and builds detached, attached, and above-garage units.
- One master builder with an in-house Master Electrician, start to finish — since 1969.
A second home, in your own backyard.
An Accessory Dwelling Unit is a secondary, fully independent living space — its own kitchen, bath, and entrance — built on the same lot as your primary residence. Eugene homeowners build them for rental income, to house aging parents or adult kids, or simply to add lasting value and flexibility to their property.
Red Umbrella designs and builds all three kinds: detached backyard cottages, attached units that share a wall with the home, and above- or beside-the-garage suites — plus the smartest path of all, converting an existing garage into a full ADU.
Rental income
A backyard unit can generate steady monthly rent in Eugene's tight housing market.
Room for family
Keep aging parents or grown kids close — with their own private, dignified space.
Lasting property value
A well-built ADU adds square footage and resale appeal to your largest asset.
Flexible & future-proof
Guest house today, rental tomorrow, in-law suite down the road — it adapts as life changes.
Efficient & sustainable
Compact footprints and SIP construction mean a tight envelope and low energy bills.
One accountable builder
Design, permitting, and construction under one master craftsman — no contractor juggling.
Our five-step ADU process.
Site visit
We walk your property, talk through your goals and budget, and confirm what your lot and Eugene zoning will allow.
Design
We collaborate on floor plans and elevations until the layout fits your life — and your site — perfectly.
Permitting
We prepare and submit the drawings and shepherd them through the City of Eugene permitting process for you.
Construction
Our crew builds it — with regular updates, a clean jobsite, and a master electrician handling the wiring in-house.
Completion
Final inspection, walkthrough, and handover — plus the ongoing support of a builder who stands behind the work.
Answers, before you ask.
How long does an ADU take to build?
Most ADUs take several months from permit to completion, depending on size, site conditions, and the City's permitting timeline. We give you a realistic schedule up front and keep you posted at every stage.
Can I build an ADU on my Eugene lot?
Most single-family lots in Eugene can accommodate an ADU, but setbacks, lot coverage, and zoning all matter. We confirm exactly what's allowed during the site visit — before you commit to anything.
How do people pay for an ADU?
Common paths are a home-equity loan, a cash-out refinance, or a home-improvement loan. We also partner with HFS Financial for renovation financing. Many owners offset the cost with rental income once the unit is finished.
Do you handle the design and permits, or do I?
We handle both. We produce the floor plans and drawings and manage the City of Eugene permitting from start to finish, so you have one accountable point of contact.
A few backyard ADU & cottage projects.
A look at real, finished Red Umbrella work across Eugene & Lane County.
Ready to add an ADU to your property?
Tell us about your lot and what you have in mind — Bari will walk you through what's possible in Eugene.
Begin Your Project →Garage conversion vs. a new ADU
| Garage Conversion | New Detached ADU | |
|---|---|---|
| Typical cost | $50k–$85k | $130k–$230k |
| Timeline | Faster — existing structure | Longer — ground-up build |
| Your parking | You give up the garage | You keep the garage |
| Privacy | Attached to the home | Fully separate unit |
| Rental appeal | Good | Best — private entrance |
| Best for | Budget & speed | Max value & privacy |
Not sure which fits your lot? Bari will tell you straight at a free consultation.
ADU pricing in Eugene
Most detached ADUs run roughly $130k–$230k ground-up, while a garage-to-ADU conversion is often $50k–$85k. A free on-site consultation with Bari gives you an honest, specific number for your lot — no obligation.
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