Detached ADUs in Eugene
A standalone backyard cottage — fully separate from your home, with its own entrance, kitchen, and bath.
Key Takeaways
- A detached ADU is a standalone backyard cottage — the most private and rentable type.
- In Eugene it typically runs $130k–$230k ground-up.
- Oregon allows them on most single-family lots, with no owner-occupancy required.
What is a detached ADU?
A detached accessory dwelling unit is a separate, freestanding home in your backyard — its own walls, roof, entrance, kitchen, and bathroom. It's the most private and most rentable type of ADU, and a popular choice for guests, family, aging parents, or rental income.
Why homeowners choose detached
A detached ADU keeps your garage and parking, gives a renter or family member full independence, and tends to add the most lasting value. In Eugene, a ground-up detached ADU typically runs $130,000–$230,000 depending on size and finish.
How Red Umbrella builds it
You work directly with owner Bari Swartz — building in the Eugene area since 1969 — with a Supervisory Master Electrician in-house (no subbed-out electrical). We design it, pull and manage every City of Eugene or Lane County permit, and build it start to finish, backed by a 5-year workmanship warranty. Choose traditional stick framing or energy-efficient SIP panels. Up to 120% financing available.
Common questions
Can I put a detached ADU on my lot?
Oregon allows ADUs on most single-family lots, generally with no owner-occupancy requirement and no extra off-street parking required. Bari will confirm what your specific lot allows.
How big can a detached ADU be?
Sizes vary by jurisdiction; many homeowners build under 800 sq ft, which often clears Eugene's permitting faster. We'll design to your needs and the rules.
Can I rent out a detached ADU?
Yes — in most Eugene and Lane County situations you can rent it without living on the property, thanks to Oregon's updated ADU laws.
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