MEP Engineering in Seattle

SDCI runs plan review through its online Seattle Services Portal, with most commercial permits submitted and tracked electronically. The city uses intake screening and, for larger projects, a preliminary/pre-submittal conference process, and offers different review tracks depending on project size and complexity. SDCI publishes review timelines, and its energy code review is notably rigorous given Seattle's stringent local energy code.

Seattle maintains its own Building, Residential, Mechanical, and Energy Codes with amendments on top of the state codes, and enforces the Building Emissions Performance Standard (BEPS) plus the Energy Benchmarking and Building Tune-Ups ordinances for existing buildings. The Seattle Energy Code is one of the most aggressive in the country, so design to the city edition — not the plain Washington State Energy Code.

Seattle City Light's power is overwhelmingly hydroelectric and low-carbon, which shifts electrification economics and emissions accounting compared with fossil-heavy grids; new services and interconnection go through the municipal utility's process. Seattle Public Utilities provides water, sewer, and drainage, so utility coordination inside city limits runs through city agencies.

Seattle's construction market is shaped by major technology-sector office and campus development, dense high-rise and mid-rise multifamily, healthcare and life-science lab space, and institutional work. The city's aggressive decarbonization policy — the Building Emissions Performance Standard and one of the strictest energy codes in the nation — is a defining constraint, steering new and existing buildings toward electrification and deep envelope performance.