Bend welcomes ADU development with by-right approval and generous size allowances. The city's rapid growth and housing shortage have made ADU policy progressive, creating excellent conditions for residential infill development.
Zoning & Size Requirements [1][2]
Yes — Bend allows ADUs. A detached ADU can typically be up to 800 sq ft under current Oregon and Bend zoning rules.
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| Allowed Zones | All residential zones |
| Max Size (Detached) | 800 sq ft (first ADU on the lot; a second ADU is capped at 500 sq ft - BDC 3.6.200(B)(3)) |
| Max Size (Attached) | 800 sq ft (first ADU on the lot; a second ADU is capped at 500 sq ft - BDC 3.6.200(B)(3)) |
| Max Size (JADU) | N/A (Oregon does not use a separate JADU category) |
| Max Height | Per underlying zoning district; Confirm with Bend Planning |
| Max Units | Up to 2 ADUs per lot (the first capped at 800 sq ft, the second at 500 sq ft; small dwelling unit developments are limited to 1 ADU; not permitted on a lot created by a middle housing land division or in a cottage development — BDC 3.6.200(B)(1)-(3)) |
Setback Requirements [1][2]
Bend requires a rear setback of about 6 ft for a detached ADU, and no additional parking is required. Owner-occupancy is not required — you can rent it out without living on the property.
| Rear Setback | Per underlying zoning district; detached ADU must be at least 6 ft from the main house |
| Side Setback | Per underlying zoning district; Confirm with Bend Planning |
| Front Setback | Per underlying zoning district; Confirm with Bend Planning |
| Parking Required | Not required (no minimum on-site parking for ADUs) |
| Owner Occupancy | Not required |
| Min Lot Size | None - ADUs are permitted on any lot with a single-unit dwelling (BDC 3.6.200) |
Permit Process & Fees
An ADU permit in Bend typically costs $1,700-$2,900 and takes 40-55 days, through a ministerial, by-right review.
| Approval Process | By-right with building permit |
| Review Timeline | 40-55 days |
| Permit Fees | $1,700-$2,900 |
| Impact Fees | $400-$800 |
| Plan Check | 2-3 weeks |
| Pre-Approved Plans | Available |
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Construction Costs [3][4]
Building an ADU in Bend typically costs $140,000-$280,000 ($140-$280 per sq ft); a garage conversion runs $70,000-$160,000.
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| Average Build Cost | $140,000-$280,000 |
| Cost per Sq Ft | $140-$280 |
| Garage Conversion | $70,000-$160,000 |
| Prefab ADU (Installed) | $100,000-$230,000 |
Finance Your ADU Project
Most ADU projects are funded through HELOCs, construction loans, or cash-out refinancing. Compare rates from top lenders.
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Rental Income Potential [5][6]
A 2-bedroom ADU in Bend rents for around $1,700-$2,500/mo, an estimated 7-10% annual return.
| Avg Rent (1 Bedroom) | $1,300-$1,800/mo |
| Avg Rent (2 Bedroom) | $1,700-$2,500/mo |
| Short-Term Rental | Yes (vacation rental restrictions apply) |
| Est. Annual ROI | 7-10% annual return |
Explore Prefab ADU Options
Prefab ADUs can save 20-40% vs. traditional construction and cut build time in half.
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Recent Law Changes
What's Changed Recently
- Oregon HB 2138 (signed 2025): voids HOA/CC&R restrictions on ADUs and middle housing; operative January 1, 2027
- Bend allows up to two ADUs per lot with no minimum on-site parking required. The two units have different size caps: the first ADU may be up to 800 sq ft and the second up to 500 sq ft (BDC 3.6.200(B)(3)(a))
- A second ADU can be blocked on sewer capacity. Where the second unit would push the lot past the zone's maximum density, it is not permitted if the sanitary sewer main is at or over 80% full in dry weather, leaves under two feet of freeboard in a manhole in wet weather, or drives a force main over 10 ft/second (BDC 3.6.200(B)(4)) - check capacity before designing for two units
- ADUs limited to lots with single-unit homes, townhomes, or manufactured homes; special standards apply in NorthWest Crossing and historic districts
- ADUs allowed in all residential zones under statewide HB 2001
Tips for Building an ADU in Bend
- Bend's mountain resort appeal attracts strong vacation rental market
- Tourism season creates peak rental demand; plan for seasonal variations
- Lower cost basis than Portland; excellent ROI potential
- Quick approval process means faster project start and revenue generation
ADU Builders in Bend
Looking for an ADU builder in Bend? ADU projects need a contractor experienced with local zoning, the permit process, and utility connections — not every general contractor has built one. We match Bend homeowners with experienced local ADU contractors who provide free, no-obligation quotes. Getting at least three bids typically saves 20-40% on the same scope.
Sources & References
All data on this page is sourced from official government records and verified market data. View our full methodology.
- ADU Code Requirements — City of Bend Planning Department — Accessed 2026-06-28
- Bend Development Code 3.6.200 — Residential Uses (ADU standards, subsection B) Municipal Code — Accessed 2026-08-09
- Angi — ADU Construction Cost Data Market Data — Accessed 2026-02-24
- Angi — Local ADU Contractor Costs Market Data — Accessed 2026-02-24
- Zillow Rental Manager — Market Rent Data Market Data — Accessed 2026-02-24
- HUD Fair Market Rents Government Data — Accessed 2026-02-24
- Oregon 2025 Legislative Session Overview (HB 2138) — DLCD Government Data — Accessed 2026-06-28
Frequently Asked Questions
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