Permit Office (AHJ)
City of Chicago Department of Buildings
Cook County · Illinois
MEP, structural, civil, and energy-compliance engineering for Chicago projects — permitted through City of Chicago Department of Buildings and designed to the city's adopted codes and amendments.
Coordinated mechanical, electrical, and plumbing design — engineered as one system, stamped by licensed professionals, and documented for fast permit approval.
Structural systems designed to the loads your state actually imposes — gravity, seismic, wind, and snow — with drawings built to get approved the first time.
Site engineering that clears local review — grading, drainage, and utilities designed to each jurisdiction's published standards from day one.
Energy compliance handled as engineering, not paperwork — documentation matched to the exact code edition your permitting jurisdiction enforces.
Chicago historically used its own unique construction code and, in the 2019 update, aligned much of it with the 2018 IBC while keeping Chicago-specific requirements — including combustible-construction limits, high-rise provisions, and its own materials rules. The city enforces an Energy Benchmarking Ordinance for larger buildings, so confirm the current Chicago amendment package rather than assuming a plain IBC/IECC project.
Chicago's construction market spans downtown high-rise office and residential, large industrial and logistics development in the metro fringe, healthcare and higher-education institutions, and adaptive reuse of the city's deep stock of older masonry and high-rise buildings. Cold-climate energy performance and the city's benchmarking ordinance shape retrofit demand, while high-rise and combustible-construction rules keep structural and life-safety engineering central to downtown projects.
Reviewed 2026-09-11. Code editions and local requirements can change; confirm the current requirements with the authority having jurisdiction before design.
Chicago runs permitting through the E-Plan electronic plan review system, with a Standard Plan Review track for larger commercial buildings and a Developer Services / Self-Certification Permit Program that lets a licensed Illinois architect self-certify code compliance for many qualifying projects to accelerate issuance. The Department of Buildings coordinates multi-agency review, and projects triggering zoning, landmarks, or utility easements pick up additional routing.
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