ADU Design in Portland, OR
Portland builds inside an urban growth boundary, which pushes density, infill, and middle housing onto tight lots. It is a national mass-timber leader with a strong food-and-beverage, athletic-apparel, and tech-manufacturing economy, all in Cascadia SDC D territory.
Best price · Quotes back fast · PE stamps backed by Apex Grid Engineering
ADU plans, start to permit
Site plan, floor plans, elevations, structural design, and energy compliance — the complete drawing set your city needs to approve an accessory dwelling unit.
Designed for ADU rules
Many states now streamline ADU approvals with state-level rules on size, setbacks, and fees. We design to the current rules in your jurisdiction so nothing gets kicked back.
Fast and affordable
ADUs are small projects — they shouldn't carry big-firm fees or timelines. Lean process, best price, quotes back fast.
Project types
- Middle housing and infill multifamily
- Mass-timber office and mixed-use
- Brewery and food-production facilities
- Athletic-apparel and tech TI
- Adaptive reuse of historic brick
- Riverfront mixed-use
Everything else your project needs
MEP Engineering in Portland
Mechanical, electrical & plumbing design — permit-ready drawings, best price.
Structural Engineering in Portland
Structural design, analysis & PE stamping — permit-ready drawings, best price.
Civil Engineering in Portland
Site civil & land development — permit-ready drawings, best price.
PE Stamping in Portland
Licensed PE stamps on your plans — fast turnaround, best price.
Pool Engineering in Portland
Pool structural, systems & permits — engineered for plan check approval.
Engineering Cost Guide in Portland
Straight answers on what engineering really costs.