Structural Engineering in Seattle, WA
Seattle's construction market is driven by tech-campus expansion, port and maritime industry, and a wave of multifamily and mixed-use infill. The city sits in the Cascadia subduction zone and enforces one of the strictest energy codes in the country.
Best price · Quotes back fast · PE stamps backed by Apex Grid Engineering
What we design
- Seismic Design Category D design for the Cascadia subduction-zone threat, with special moment frames, shear walls, and foundation detailing for major events
- Liquefaction-prone fill soils in SODO, Interbay, and the waterfront requiring deep foundations, ground improvement, or mat slabs
- Steep-slope sites on Queen Anne, Capitol Hill, and West Seattle demanding shoring, tiebacks, and hillside foundation engineering
- Mass timber construction — Seattle is a national leader — with CLT floor systems, hybrid steel-timber frames, and fire-rated detailing
- High-rise residential and office towers in South Lake Union and Denny Triangle with performance-based seismic design
- Seismic retrofit of unreinforced masonry buildings, an ongoing citywide priority
Project types
- Tech office campuses and tenant improvements
- Mid-rise and high-rise multifamily
- Life-science and research labs
- Waterfront and maritime industrial
- Hospital and healthcare expansions
- Mass-timber mixed-use
Everything else your project needs
MEP Engineering in Seattle
Mechanical, electrical & plumbing design — permit-ready drawings, best price.
Civil Engineering in Seattle
Site civil & land development — permit-ready drawings, best price.
PE Stamping in Seattle
Licensed PE stamps on your plans — fast turnaround, best price.
Pool Engineering in Seattle
Pool structural, systems & permits — engineered for plan check approval.
ADU Design in Seattle
Accessory dwelling unit plans — from concept to permit.
Engineering Cost Guide in Seattle
Straight answers on what engineering really costs.