At L120 Engineering and Design, we provide structural engineering services for residential and commercial projects across the Seattle area. Our work includes:

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• Construction drawings

• Foundation inspections

• Site visits

• Feasibility consultations

 

We specialize in high-end custom homes, luxury remodels, story additions, and unique builds — from mountain cabins to coastal residences. We also assist homeowners exploring a potential renovation, as well as builders and contractors needing fast, reliable engineering input or a second opinion.

 

If you're starting a project and think we might be a good fit, don’t hesitate to reach out. We’re happy to offer guidance or connect you with one of our many trusted partners in architecture or foundation work.