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§ WA King County
City building permits

City of SeaTac

How to apply for a building permit in City of SeaTac, Washington. Permit authority, application steps, fees, and inspection requirements.

Code adoption
2021 Washington State Building Code
Avg processing
Varies by permit type.
Last verified
April 2026
On this page 5
§ 01

Permit authority

Permit Center Division (Community and Economic Development)

Street address
SeaTac City Hall, Floor 3
Coverage
All properties within the incorporated City of SeaTac.
Online portal
SeaTac LAMA Portal
SeaTac LAMA Portal
Additional resources
§ 02

When a permit is required

Permit triggers and exempt work for SeaTac

A building permit is required for most construction within the City of SeaTac.

Per state building code exemptions
  • Exempt Per state building code exemptions

Note: Contact Permit Center for specific questions about exemptions.

Required documents
  • Completed permit application
  • Site plan
  • Electronic plans (PDF format per General Standards)
  • Construction specifications
  • Architectural plans
Building code
2021 Washington State Building Code
Permit validity
Varies by permit type.
Contractor requirements
Contractors must hold a valid Washington State L&I registration.

Source: Permit Center Division (Community and Economic Development) ↗

§ 03

Application process

Typical processing: Varies by permit type.

  1. 01
    Access LAMA portal at https://lama.seatacwa.gov
  2. 02
    Create new user account
  3. 03
    Complete online application forms
  4. 04
    Upload electronic plans (PDF format, follow General Standards for Electronic Documents)
  5. 05
    Pay fees online
  6. 06
    Application routed to appropriate departments
  7. 07
    Receive electronic permit notification upon approval

Typical processing time: Varies by permit type.

Source: Permit Center Division (Community and Economic Development) ↗

§ 04

Required inspections

Scheduling and sequence

How to schedule
Scheduling deadline
Requests received before 5:00 PM scheduled for next business day
Inspection hours
Monday, Tuesday, Thursday, Friday: 9:00 AM - 4:00 PM; Wednesday: 10:00 AM - 5:00 PM

Typical sequence: Permits and approved plans required on-site

Source: Permit Center Division (Community and Economic Development) ↗

§ 05

Frequently asked

Common questions about SeaTac permits

01 Do I need a building permit in SeaTac, WA?
A building permit is required for most construction within the City of SeaTac.
02 How do I apply for a building permit in SeaTac, WA?
To apply for a building permit in SeaTac, WA, follow these steps: 1. Access LAMA portal at https://lama.seatacwa.gov 2. Create new user account 3. Complete online application forms 4. Upload electronic plans (PDF format, follow General Standards for Electronic Documents) 5. Pay fees online 6. Application routed to appropriate departments 7. Receive electronic permit notification upon approval
03 How long does it take to get a building permit in SeaTac, WA?
Building permit processing times in SeaTac, WA typically run Varies by permit type.. Timelines can vary based on project complexity and current department workload.
04 What work is exempt from building permits in SeaTac, WA?
Not all construction work requires a permit in SeaTac, WA. The following work is generally exempt: Per state building code exemptions. Note: Contact Permit Center for specific questions about exemptions. When in doubt, confirm with the local building department before starting work.
05 How do I schedule a building inspection in SeaTac, WA?
Once your permit is issued and work reaches an inspection milestone, you can schedule a building inspection in SeaTac, WA via: Customer portal. Requests received before 5:00 PM scheduled for next business day.
last verified April 2026 source Permit Center Division (Community and Economic Development) ↗ entry id permits/washington/king/seatac

Educational reference. Permit rules and fees change — confirm current requirements directly with Permit Center Division (Community and Economic Development) before applying. Jaspector is not legal advice.