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The City accepts building permit applications digitally through

24-Hour Inspection Request Line
  • 425-338-1133
  • Inspections generally occur between 8 a.m. and Noon
  • Call by 4 p.m. and receive an inspection the next business day (Monday - Thursday, except holidays)
  • Call after 4 p.m. and an inspection will be scheduled the following business day
  • Link to online inspection requests

Adopted Codes

Building Codes adopted by the City of Mill Creek as of 7/1/2016, as amended by the State of Washington Building Code Council (SBCC):

2015 International Building Code
2015 International Residential Code
2015 International Mechanical Code
2015 International Fuel Gas Code
2015 International Fire Code
2015 International Existing Building Code
2015 Uniform Plumbing Code 
Residential Energy Code Info
WA State Amendments to ICC Codes as applicable
National Electrical Code: Electrical permits administered by the WA State Dept. of L & I

Design Criteria for Mill Creek

Ground Snow Load   25 psf
Seismic Design   Category D1
Wind Speed   110mph
Wind Exposure   B & C

Quick Links
Architect / Engineer License Status
Call Before You Dig
Construction Tip Sheets
Do I Need a Permit?
Energy Code Questions
International Code Council
Licensed Contractors
Washington Association of Building Officials
When Building Permits are Required

Permit Counter
Monday - Friday
8 a.m. - 5 p.m.

Building Official
Monday - Thursday
9 a.m. - 1 p.m.

Building Inspections
Monday - Friday
7 a.m. - 3 p.m.

Staff Directory