ADU Design in Drain, OR
Torch Engineering provides accessory dwelling unit design and permitting for projects in Drain, Oregon. Projects in Drain are served by our Eugene team — same engineers, same permit-ready drawings, anywhere in Oregon.
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ADU Design in Oregon: what governs your project
Oregon's HB 2001 (2019), following 2017's SB 1051, requires cities of 10,000 or more to allow at least one ADU on any lot where a single-family home is permitted. The law bars cities from imposing owner-occupancy requirements or off-street parking mandates beyond what the primary home requires.
Energy code
System development charges for ADUs are capped by state law at a proportional share of the primary home's charges. Local building departments process ADUs through standard residential permits with predictable timelines in Portland, Eugene, Salem, and other covered cities.
Permitting & plan check
Portland's Bureau of Development Services runs a well-established electronic plan review process; other large cities like Eugene, Salem, and Bend operate their own portals. Many smaller cities and counties rely on third-party review agencies. Land-use approvals often run on a separate track from building permits in Oregon jurisdictions.
Good to know
- Western Oregon is in Seismic Design Category D due to the Cascadia subduction zone.
- Oregon DEQ's 1200-C permit covers construction stormwater statewide.
- Portland administers development review through its Bureau of Development Services.
Every discipline, one team
MEP Engineering in Drain
mechanical, electrical, and plumbing design — permit-ready drawings, best price.
Structural Engineering in Drain
structural design, analysis, and PE stamping — permit-ready drawings, best price.
Civil Engineering in Drain
site civil engineering and land development — permit-ready drawings, best price.
PE Stamping in Drain
licensed professional engineer stamping — permit-ready drawings, best price.