Commercial Mechanical Equipment Checklist
Note that alterations to existing mechanical systems shall meet WSEC C503.4 requirements. Mechanical units need to be “right-sized” based on load calculations and cannot reduce the existing economizer capacity.
For installation or replacement of HVAC equipment only, please visit the Online Permit Center to apply.
When project includes structural framing or significant ductwork modifications, wall/roof penetrations, commercial kitchen hoods or mechanical work related to another project, use the Commercial, Multi-Family & Industrial (CMI) Application Form (PDF)
Plans
- Site Plan or Roof Plan
- Drawn to scale
- Aerial views such as GIS or Google maps are acceptable
- Show equipment location relative to building and other equipment
Documents
- Signed and Dated Application Form (only if CMI and you did not apply through the Online Permit Center)
- Supplemental Form – Commercial Mechanical Equipment (PDF)
- Equipment Specifications
- Structural Calculations, required when:
- New equipment weighs more than 400 pounds or
- Replacement equipment weighs more than existing equipment or
- Replacement equipment is in new location
