Mill Creek, WA — 2026 Building Permit Guide

On this page 6

§ 01

Permit authority

Permit Counter

Street address

15728 Main Street, Mill Creek, WA

Phone

425-551-7254

permitcounter@millcreekwa.gov

Coverage

All properties within the incorporated City of Mill Creek.

Online portal

City of Mill Creek Permit Services

Mill Creek Online Permitting

§ 02

When a permit is required

Permit triggers and exempt work for Mill Creek

A building permit is required for most construction in the City of Mill Creek.

Note: Standard exemptions as adopted in Mill Creek Municipal Code.

Required documents

Completed permit application
Plans and specifications
Supporting documents as required by project type

Building code: 2021 International Building Code (IBC) and International Residential Code (IRC) with Washington amendments (effective March 15, 2024).
Contractor requirements: All contractors must be registered with Washington State L&I. Electrical permits issued by WA State L&I (Mill Creek does not issue electrical permits).

Source: Permit Counter ↗

§ 03

Application process

Typical processing: Typically includes 2 reviews for most applications.

01

Submit application with required documents.
02

Pay plan review fees and deposits (required before application deemed complete).
03

Plan review (includes 2 reviews for most applications).
04

Pay permit fee upon approval.
05

Permit issuance.

Typical processing time: Typically includes 2 reviews for most applications.

Source: Permit Counter ↗

§ 04

Fee schedule

Effective January 1, 2026

Fee type

Amount

Minimum permit fee

$88

Plan check fee

70% of Permit Fee

Permit fee formula

Building permit fees based on valuation (Table B): $2,000 or less: $88; $2,001-$25,000: 2.0% of Valuation + $175; $25,001-$50,000: 1.5% of Valuation + $635; $50,001-$100,000: 1.0% of Valuation + $1,010; $100,001-$500,000: 0.8% of Valuation + $1,510; $500,001-$1,000,000: 0.7% of Valuation + $4,710; $1,000,001-$5,000,000: 0.6% of Valuation + $8,210; $5,000,001 or more: 0.5% of Valuation + $32,210.

Reinspection fee

1.5x hourly rate (minimum 1 hour)

Technology fee: 3% (applies to all development fees except telecommunications and state fees). State Building Code Fee: Residential $6.50 + $2 per dwelling unit over one; Commercial $25 + $2 per dwelling unit over one. Application/Permit Extension: $350 or 50% of permit fees (whichever is less). Additional fees: Demolition (IBC) $700, Demolition (IRC) $350, Fence $88, Re-roof (IRC) $175. Evening/weekend/holiday or expired permit reinspections: 2x hourly rate (minimum 2 hours). Certificate of Occupancy (not associated with building permit): $175.

§ 05

Required inspections

Scheduling and sequence

How to schedule

425-551-7254 (phone)

Source: Permit Counter ↗

§ 06

Frequently asked

Common questions about Mill Creek permits

01 Do I need a building permit in Mill Creek, WA? ▸

A building permit is required for most construction in the City of Mill Creek.

02 How much does a building permit cost in Mill Creek, WA? ▸

Building permit fees in Mill Creek, WA are set by the local building department and vary by project type and valuation. The minimum permit fee is $88. Fees are calculated as: Building permit fees based on valuation (Table B): $2,000 or less: $88; $2,001-$25,000: 2.0% of Valuation + $175; $25,001-$50,000: 1.5% of Valuation + $635; $50,001-$100,000: 1.0% of Valuation + $1,010; $100,001-$500,000: 0.8% of Valuation + $1,510; $500,001-$1,000,000: 0.7% of Valuation + $4,710; $1,000,001-$5,000,000: 0.6% of Valuation + $8,210; $5,000,001 or more: 0.5% of Valuation + $32,210.. Plan check fee: 70% of Permit Fee.

03 How do I apply for a building permit in Mill Creek, WA? ▸

To apply for a building permit in Mill Creek, WA, follow these steps: 1. Submit application with required documents. 2. Pay plan review fees and deposits (required before application deemed complete). 3. Plan review (includes 2 reviews for most applications). 4. Pay permit fee upon approval. 5. Permit issuance.

04 How long does it take to get a building permit in Mill Creek, WA? ▸

Building permit processing times in Mill Creek, WA typically run Typically includes 2 reviews for most applications.. Timelines can vary based on project complexity and current department workload.

05 How do I schedule a building inspection in Mill Creek, WA? ▸

Once your permit is issued and work reaches an inspection milestone, you can schedule a building inspection in Mill Creek, WA via: 425-551-7254.

last verified April 2026 source Permit Counter ↗ entry id permits/washington/snohomish/mill-creek

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Educational reference. Permit rules and fees change — confirm current requirements directly with Permit Counter before applying. Jaspector is not legal advice.

City of Mill Creek

Other jurisdictions in Snohomish County.