L&S Engineering

L&S Engineering is a leading mechanical and electrical engineering consulting firm based in Spokane, Washington, serving the commercial and institutional construction sectors across the Inland Northwest. For over 65 years, we’ve partnered with architects and building owners to deliver high-performance designs that meet stringent code compliance requirements and achieve LEED certification. Our expertise encompasses a comprehensive suite of services, including code compliance consulting, detailed building commissioning, precise energy modeling, and seamless LEED submittal preparation.

We also provide expert construction administration and AutoCAD drafting support. With a proven track record and a dedicated team, L&S Engineering ensures projects are completed efficiently and to the highest standards, contributing to sustainable and functional building solutions.