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 — formerly a Master Electrical Contractor in several states, so the electrical is planned with the floor plan. We design it, pull and manage every City of Eugene or Lane County permit, and build it start to finish. Licensed, bonded & insured — Oregon CCB #210412. 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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