Can I Build ADU in Bend, OR? (2026)
Find out if you can build a adu in Bend, OR. Rules, permit requirements, costs, and next steps.
Yes, ADUs are allowed in Bend, OR. California state law ensures by-right approval.
An Accessory Dwelling Unit (ADU) is a secondary housing unit on a residential lot — also called a granny flat, in-law suite, or backyard cottage. In Bend, OR, ADUs are permitted by right under state law, making them one of the most accessible ways to add housing on your property. ADUs can be detached, attached to the main home, or created by converting an existing garage or accessory structure.
ADU Rules in Bend
ADU Rules in Bend: Detached ADU max size: 800 sq ft. Attached ADU max size: 75% of primary dwelling up to 800 sqft. Setbacks: 5 ft side, 5 ft rear. Owner-occupancy: Owner-occupancy requirements for ADUs are prohibited in Oregon by ORS 197A.420 (HB 2001 implementing law). Bend eliminated its local owner-occupancy requirement in 2020. Neither primary dwelling nor ADU must be owner-occupied.. State preemption applies: OR law requires Bend to approve compliant ADUs by right.
Costs & Fees
ADU permits in Bend: Total estimated permit cost: $3,000–$8,000 in permit fees plus SDCs. Contact the Bend Community Development Department — Building Division for current fee schedule.
Timeline
Bend Community Development processes ADU permits through the online CivicPlus permit portal. Standard ADU: 4-8 weeks plan review. Bend's rapid growth has created permit backlogs — processing times may be longer than Oregon's state-mandated 30-day window for Type I decisions. Construction typically 4-10 months.
Next Steps
Next steps for building an ADU in Bend: 1. Review full ADU rules including size limits, setbacks, and parking. 2. Apply for an ADU permit through the Bend Community Development Department — Building Division at https://www.bendoregon.gov/government/departments/community-development/building/online-permits. 3. Hire a licensed contractor familiar with OR ADU requirements.
Bend Community Development Department — Building Division
Phone: (541) 388-5580
Website: https://www.bendoregon.gov/government/departments/community-development/building
Online Permits: https://www.bendoregon.gov/government/departments/community-development/building/online-permits
Frequently Asked Questions
Can I build an ADU on my Bend property?
Yes. Oregon HB 2001 (2019) requires Bend to allow ADUs by-right on all residential lots. ADUs can be up to 800 sqft (smaller than California's 1,200 sqft maximum). No owner-occupancy is required. However, Bend's System Development Charges (SDCs) for water, sewer, transportation, and parks typically add $8,000–$20,000 to ADU costs — budget for these in addition to permit fees. Contact Bend Community Development at (541) 388-5580 or apply online.
How does Bend's cold climate affect ADU construction?
Bend has significant climate requirements for habitable construction. Average January lows reach 24°F with periodic extreme cold events (-10°F or lower). New ADUs require: minimum R-49 ceiling insulation, R-21 wall insulation, double-pane low-E windows, and freeze-protected plumbing (pipe insulation + heat tape in unconditioned spaces). Heating is the dominant energy cost — a high-efficiency heat pump or natural gas forced-air system is standard. Budget for proper insulation and heating system upfront — inadequate winterization of an ADU leads to frozen pipes and expensive emergency repairs.
What are Bend's System Development Charges (SDCs) and how do they affect ADU affordability?
Bend's SDCs are one-time fees charged to new development for infrastructure capacity. For a new detached ADU, typical SDCs include: Water SDC ($3,000–$6,000), Sewer SDC ($2,000–$5,000), Transportation SDC ($2,000–$4,000), and Parks SDC ($1,000–$2,500). Total SDCs for a detached ADU are often $8,000–$17,500 — this is separate from permit fees. SDC deferrals are available for income-restricted affordable housing ADUs. The Bend City Council has discussed SDC reform for ADUs to reduce housing costs — check current SDC schedules at bendoregon.gov/building/fee-schedule before budgeting.
Is my Bend property in a Wildfire Urban Interface (WUI) zone?
Approximately 30% of Bend's residential area is in the Wildfire Urban Interface (WUI), particularly on the city's east side transitioning to high desert, and in forested neighborhoods abutting natural areas. WUI designation requires fire-resistant construction materials for new buildings and ADUs: Class A fire-rated roofing, ember-resistant vents, ignition-resistant siding, and defensible space clearance (30 feet minimum around structures). Use the Oregon WUI maps at oregon.gov/odf to check your parcel, or call Bend Fire at (541) 322-6300.
What are the short-term rental rules for Airbnb in Bend?
Bend requires a Short-Term Rental License ($150/year) for all rentals of fewer than 30 consecutive days. Both hosted and unhosted (whole-home) STRs are permitted with a license. Maximum occupancy is 2 guests per bedroom plus 2 additional. Bend collects a combined 12.2% transient lodging tax (state + city). Airbnb and VRBO collect and remit taxes automatically. Bend's outdoor recreation culture drives strong STR demand year-round — ski season (November-March), spring biking/hiking (April-May), summer rafting/festivals (June-September), and fall foliage (October) all create STR demand.
How does Bend's electricity utility (Pacific Power) differ from Portland's?
Bend is served by Pacific Power (PacificCorp) for electricity — different from Portland General Electric (PGE) which serves Portland. Both are PacificCorp subsidiaries but have separate service territories and program offerings. Pacific Power's solar net metering program for Bend customers is governed by Oregon's net metering standard (ORS 757.300). Contact Pacific Power's renewable energy team at (800) 221-7070 for current solar interconnection rates and net metering terms before installing a solar system in Bend.
Source: Bend Community Development Department — Building Division — Building Regulations. Last verified April 6, 2026. View source