MEP Stamping in Naperville, IL

Naperville is the Chicago metro's most affluent western suburb and a major corporate R&D corridor, with Fortune 500 headquarters, office campuses, and mixed-use retail development as primary engineering project types.

MEP plan sets we stamp

Mechanical (load calculations, ductwork and ventilation layouts, equipment schedules), electrical (panel schedules, load calculations, single-line diagrams, NEC compliance), and plumbing (fixture counts per IBC Table 2902, riser diagrams, gas and water sizing) — sealed as a coordinated set, not three disconnected trades.

What the reviewer checks

Plan checkers fail MEP sets on undersized ductwork, missing ventilation rates per ASHRAE 62.1, electrical loads that don't match the service size, and fixture counts that don't meet code. Our PE review catches those before submittal — sealed sheets that actually match the calculations behind them.

Send the full package

PDF plan set, equipment cut sheets, and any energy compliance forms (Title 24, COMcheck) you already have. Partial sets welcome — we flag what's missing so your first submittal is complete. Backed by Apex Grid Engineering: 10+ PEs across 49 states, 20+ engineers.

Project types

• Commercial office & retail
• Healthcare & medical facilities
• Institutional & civic

Everything else your project needs

MEP Stamping nearby

Alton · Arlington Heights · Aurora · Bartlett · Belleville · Berwyn · Bloomington · Bolingbrook · Calumet City · Champaign · Chicago · Cicero