Civil 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.
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What we design
- Stormwater design under the City of Seattle Stormwater Code and the WA Ecology manual, with flow control for discharges to Lake Union, Lake Washington, and Puget Sound
- Combined sewer overflow (CSO) constraints in older neighborhoods, pushing on-site detention and green stormwater infrastructure
- Duwamish Waterway Superfund adjacency: contaminated-soil handling and strict dewatering discharge requirements on industrial sites
- Steep-slope and landslide-prone area grading under Seattle's Environmentally Critical Areas code
- SDOT street-improvement and right-of-way permitting for downtown and South Lake Union projects
- Shoreline permitting along Elliott Bay, Lake Washington, and the Ship Canal
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.
Structural Engineering in Seattle
Structural design, analysis & PE stamping — 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.