Mukilteo, WA — 2026 Building Permit Guide

On this page 6

§ 01

Permit authority

Permit Center

Street address

11930 Cyrus Way, Mukilteo, Washington 98275

Phone

425-263-8000

permitcenter@mukilteowa.gov

Coverage

All properties within the incorporated City of Mukilteo.

Online portal

Online Permit Portal (SmartGov Community)

SmartGov Community

§ 02

When a permit is required

Permit triggers and exempt work for Mukilteo

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

Note: Standard IBC/IRC exemptions apply.

Required documents

Completed application
Plans and specifications
Submittal checklists (project-type specific)

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

Source: Permit Center ↗

§ 03

Application process

Typical processing: 6 weeks for new permits, 4 weeks for resubmittals (typical).

01

Create account on Online Permit Portal.
02

Submit application with required documents.
03

Pay review fees (application not complete until fees paid).
04

Plan review (6 weeks for new permits, 4 weeks for resubmittals typical).
05

Pay permit fee upon approval.
06

Permit issued.

Typical processing time: 6 weeks for new permits, 4 weeks for resubmittals (typical).

Source: Permit Center ↗

§ 04

Fee schedule

Mukilteo building permit fees

Fee type

Amount

Minimum permit fee

$135

Plan check fee

75% of Permit Fee

Permit fee formula

Building permit fees based on total valuation: $0-$2,000: $135; $2,001-$25,000: $135 + $18.50 per $1,000 over $2,000; $25,001-$50,000: $495 + $14.50 per $1,000 over $25,000; $50,001-$100,000: $866.25 + $10.50 per $1,000 over $50,000; $100,001-$500,000: $1,388.75 + $8.50 per $1,000 over $100,000; $500,001-$1,000,000: $4,688.75 + $7.50 per $1,000 over $500,000; $1,000,001-$3,000,000: $8,263.75 + $6.00 per $1,000 over $1,000,000; Over $3,000,000: $23,263.75 + $3.50 per $1,000 over $3,000,000.

Penalty (no permit)

After-the-Fact Permit: Double Permit Fee

Technology fee: 3% of required permit fees. Administration fee: 15% added when outside costs incurred. Additional fees: State Building Code Council Fee (per state schedule), Extension (one permitted): $150, Completion Permit: 50% of Original Permit Fee, Modification/Revision for Issued Permit: $800.

§ 05

Required inspections

Scheduling and sequence

How to schedule

Online Permit Portal or email (online)

Scheduling deadline: 3 p.m. the day before for building inspections.
Time windows: Monday-Thursday. Most inspections 9:00 a.m. - 3:00 p.m.

Excessive inspection fee: $115 (3+ inspections on same correction).

Source: Permit Center ↗

§ 06

Frequently asked

Common questions about Mukilteo permits

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

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

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

Building permit fees in Mukilteo, WA are set by the local building department and vary by project type and valuation. The minimum permit fee is $135. Fees are calculated as: Building permit fees based on total valuation: $0-$2,000: $135; $2,001-$25,000: $135 + $18.50 per $1,000 over $2,000; $25,001-$50,000: $495 + $14.50 per $1,000 over $25,000; $50,001-$100,000: $866.25 + $10.50 per $1,000 over $50,000; $100,001-$500,000: $1,388.75 + $8.50 per $1,000 over $100,000; $500,001-$1,000,000: $4,688.75 + $7.50 per $1,000 over $500,000; $1,000,001-$3,000,000: $8,263.75 + $6.00 per $1,000 over $1,000,000; Over $3,000,000: $23,263.75 + $3.50 per $1,000 over $3,000,000.. Plan check fee: 75% of Permit Fee.

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

To apply for a building permit in Mukilteo, WA, follow these steps: 1. Create account on Online Permit Portal. 2. Submit application with required documents. 3. Pay review fees (application not complete until fees paid). 4. Plan review (6 weeks for new permits, 4 weeks for resubmittals typical). 5. Pay permit fee upon approval. 6. Permit issued.

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

Building permit processing times in Mukilteo, WA typically run 6 weeks for new permits, 4 weeks for resubmittals (typical).. Timelines can vary based on project complexity and current department workload.

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

Once your permit is issued and work reaches an inspection milestone, you can schedule a building inspection in Mukilteo, WA via: Online Permit Portal or email. 3 p.m. the day before for building inspections..

last verified April 2026 source Permit Center ↗ entry id permits/washington/snohomish/mukilteo

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

City of Mukilteo

Other jurisdictions in Snohomish County.