Pierce County is the second most populous county in Washington and runs one of the more clearly structured permitting frameworks in the state, with permit types sorted into three tiers by how much public process they attract. It also makes one early step compulsory where most counties leave it to the applicant.
Planning and Public Works runs a Development Center that is the county’s central location for building permits, land use actions, site development permits, environmental reviews, sewer utility permits and fire prevention permits.
This guide covers unincorporated Pierce County. Tacoma, Lakewood and the Pierce County portion of Auburn are incorporated and permit separately, and the county also handles sewer, roads, ferries and airports alongside building permits.
The screening is compulsory on constrained sites. The county offers pre-application services at several levels and most are optional — but a Level 1 Pre-Application Screening is required for certain projects, including those with critical area indicators, special site restrictions, or properties served by on-site septic systems or private wells. On a rural Pierce County parcel that captures a great many projects, and skipping it is not an option.
What requires a building permit in Pierce County?
Washington has a mandatory statewide building code. The codes enumerated in chapter 19.27 RCW, the State Building Code Act, are adopted and amended by the State Building Code Council within the Department of Enterprise Services, and they are required in all cities and counties — local government administers and enforces them rather than deciding whether to have them. A city or county may make the state code stricter but cannot opt out of it, and local changes affecting houses or apartments need State Building Code Council approval. So the question in Pierce County is not whether a code applies, but which edition is in force and what Pierce County Planning and Public Works has added to it.
Permit required
- New buildings, additions, alterations and change of occupancy or use
- Structural alterations, load-bearing changes, foundations, decks and retaining walls
- Plumbing work under the Uniform Plumbing Code as adopted by the state
- Mechanical and HVAC change-outs, fuel gas work and ventilation
- Work affecting the Washington State Energy Code envelope or systems
- Re-roofing above the exempt scope, demolition, and work in critical areas
Often exempt
- Ordinary repairs and maintenance replacing materials in kind
- Small accessory structures below the code threshold, where zoning allows
- Painting, flooring, cabinetry and other finish work
- Like-for-like fixture swaps with no alteration to piping
Local amendments, fee schedules and exempt thresholds differ from one jurisdiction to the next, so an exempt list from a neighbouring city is not reliable. An exemption from a building permit is never an exemption from zoning, critical areas review, the energy code or a trade permit. Confirm scope with Pierce County Planning and Public Works before work starts.
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Permit types are sorted into three tiers by process rather than by trade: Tier 1 is reviewed administratively with no notice or hearing and covers residential building permits, demolition and accessory dwelling units; Tier 2 requires public notice but no hearing, covering boundary line adjustments, site plan review and preliminary short plats; and Tier 3 requires notice and a public hearing before the Hearing Examiner for preliminary plats, conditional use permits and variances
Washington has a mandatory statewide building code under chapter 19.27 RCW that every city and county enforces and may make stricter; electrical permits come from the Department of Labor and Industries unless the city runs its own programme or Tacoma Power serves the site. Building codes in Washington
Who handles permitting in Pierce County?
Planning and Public Works is responsible for building permits, environmental review, community planning and code enforcement alongside the county road and levee systems, sewer systems, airports and ferries, with the Development Center acting as the single intake point.
| Detail | Information |
|---|---|
| Department | Pierce County Planning and Public Works, Development Center |
| Address | Pierce County Annex, East Entrance, 2401 South 35th Street, Tacoma, WA 98409 |
| Phone | (253) 798-3739 (Monday to Friday, 8:00 a.m. to 4:00 p.m.) |
| Counter hours | Monday, Wednesday and Friday, 9:00 a.m. to 2:00 p.m. for full in-person services; Tuesday and Thursday, 9:00 a.m. to 2:00 p.m. for basic services only (payments and filings) |
| Level 1 screening | Required for critical area indicators, septic or private well sites |
| Tier 1 | Administrative, no notice or hearing |
| Tier 3 | Notice and a public hearing before the Hearing Examiner |
| Residential trade permits | Plumbing and mechanical fixture permits issued immediately after payment |
Some permits move instantly and some do not, and knowing which is which changes a programme. Permits to install or replace residential plumbing and mechanical fixtures are issued immediately after payment and can be applied for online. Anything with a plan review attached follows the tier structure and its associated notice and hearing requirements.
Commercial applicants meet an extra review most counties do not run. Customers complete a pretreatment review form when applying for a building permit, to identify potential pretreatment or spill prevention concerns, and applications with possible adverse impacts on the sewer system are routed to pretreatment staff who may impose additional requirements. The county has also agreed with the state ecology department to perform state-required engineering reviews for businesses inside its sewer service area.
In 2025, building permits issued in unincorporated Pierce County authorized 1,641 new privately owned housing units, 1,331 of them single-family homes, according to the U.S. Census Bureau Building Permits Survey.
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Residential permits
Residential thresholds are drawn precisely. A retaining wall needs a permit where it exceeds 4 feet measured from the bottom of the footing to the top of the wall, and always where it supports a surcharge or load retention — but not where it is under 4 feet, carries no surcharge and meets the one-to-one offset. A fence over 6 feet requires a building permit and must meet setbacks.
How Washington contractor credentials work
A general registration does not let anyone touch the wiring or the pipes. A general contractor needs a licensed electrical contractor and a licensed plumbing contractor for that work, or must hold those licences itself, and each electrical contractor must name a master electrician or a certified administrator. Owners may do their own electrical and plumbing work on their own property, with limits for buildings meant for sale or rent. Verify the registration is active and the bond and insurance current with Pierce County Planning and Public Works and with the department, because registration lapses are common and an expired registration invalidates the credential the permit relies on.
Commercial permits
The residential construction checklist asks for quantities from the construction and site plans which inform the permit fees, the stormwater management plan, the technical review and the inspection requirements — and the county warns that submitting inaccurate information may cause significant delays and additional fees. Proposals inconsistent with the comprehensive plan’s use or density provisions are not accepted at all.
Registrations, trade certifications and design professionals
Three credential layers appear on Washington projects: the state contractor registration under chapter 18.27 RCW, which nearly everyone doing the work needs; separate state trade certification for electricians and plumbers, each examined and administered by its own programme; and, on commercial and larger residential work, drawings stamped by a Washington-licensed architect or professional engineer. Confirm what Pierce County Planning and Public Works requires for the specific building before filing.
Most Washington contractors register with the Department of Labor and Industries (with a surety bond and insurance) rather than holding a licence; electrical and plumbing contractors also need an L&I contractor licence. Contractor licensing in Washington
Pierce County permit costs and fees
Building permit fees for most new construction are determined from quantities supplied on the application together with current building valuation data tables, with fees for remodels and elements not captured in those tables based on valuation instead.
Rather talk it over?
Call 1-855-478-4290 →Washington sets the code statewide but leaves the fee schedule local, so two jurisdictions on the same edition can price the same project very differently. The electrical fee is the one that most often surprises people, because it is paid to Tacoma Power or to L&I rather than with the building permit. Ask Pierce County Planning and Public Works for the schedule in force on your filing date, and confirm the electrical route separately.
Need a real number for a specific Pierce County project? Send us the scope, address and valuation and we will identify the edition in force, the local amendments, the electrical route and the fee categories that will apply.
Fees are set locally, plus a small state permit fee (RCW 19.27.085); the electrical fee goes to whichever body issues the electrical permit. Permit fees in Washington
Trade permits and who may pull them
Permit required
- Service installations, panel upgrades, new circuits, solar PV and EV chargers
- New plumbing, repipes, water heater change-outs, fixtures and backflow, plus gas piping (usually on a mechanical or gas permit)
- HVAC installation and change-out, ductwork, venting and commercial kitchen exhaust
- Sprinkler, standpipe and fire alarm work on commercial and multi-family structures
Typically exempt
- Replacing a fixture, switch, receptacle or light with no alteration to wiring or piping
- Clearing a stoppage without replacing or rearranging concealed piping
- Filter, thermostat and routine component service
- Like-for-like appliance repair that does not alter the connection
Plumbing and mechanical permits are local; electrical permits come from the Department of Labor and Industries unless the city runs its own electrical programme or Tacoma Power serves the site. Trade permits in Washington
How to apply for a Pierce County building permit
It is required where there are critical area indicators, special site restrictions, on-site septic or a private well.
Tier 1 is administrative, Tier 2 requires public notice, Tier 3 requires a hearing before the Hearing Examiner.
It drives fees, the stormwater plan, technical review and inspection requirements, and inaccuracy causes delays and additional fees.
Residential plumbing and mechanical fixture permits are issued immediately after payment.
Over 4 feet from footing to top, or any height carrying a surcharge, needs a permit.
Proposals inconsistent with the plan's use or density provisions are not accepted for review.
Rather not deal with the Pierce County building department?
Get a free quote →Review, corrections and what actually causes delay
In Washington the first cause of delay is the energy code, because the state code is its own instrument and more demanding than the international one most designers default to. After that comes critical areas review, which reaches ordinary residential work near wetlands, streams, steep slopes and shorelines and adds its own study and mitigation timeline. Then the electrical split, where a project waits on a local inspection that was never going to happen because the electrical permit sits with L&I or Tacoma Power. Then edition confusion around the switch-over date, when a new state edition takes effect and local amendments change with it. Build review time into the schedule and confirm the checklist with Pierce County Planning and Public Works before filing.
The state code sets a 180-day default for permit validity, but Pierce County may change it, so confirm the expiry on phased or delayed work. Permit validity in Washington
Inspections in Pierce County
Where a permit is required, standard checkpoints include footing and foundation, framing, rough-in plumbing and mechanical, insulation and energy code compliance, fire systems on commercial work, and final, with a certificate of occupancy before the building is used. Because the county also runs the sewer utility, sewer permits and pretreatment requirements are handled by the same department rather than by a separate district on connected parcels.
The point to plan around is that the electrical inspections may be booked with a different body entirely. Where L&I or Tacoma Power holds the electrical permit, its inspector attends on its own schedule and the local inspector will not sign off electrical work. Sequencing a cover-up around two independent inspection queues is the practical skill on a Washington job.
Do not cover work before the required inspection has been approved. Keep the issued permits — plural — the approved plans and the energy code documentation available on site.
Pierce County permit search and official resources
Permit records in Washington are split the same way the permits are. Where Pierce County Planning and Public Works is the authority for unincorporated Pierce County, it holds the building, plumbing and mechanical records — while electrical permits come from Tacoma Power or from the state Department of Labor and Industries (L&I), depending on which utility serves the site. If you are buying, refinancing or renovating, check both, because a clean local record does not mean the electrical work was ever permitted.
Want this handled start to finish?
Get a free quote →Confirm the edition, the local amendments and the electrical route. Washington sets a mandatory statewide minimum under chapter 19.27 RCW, the edition changes on a three-year cycle, and every jurisdiction may make it stricter. All three questions have to be answered for the parcel and the filing date.
These are the primary sources behind this guide. Codes, fee schedules and procedures change — confirm the position for your filing date.
- Pierce County Development Center
- Pierce County residential permitting
- Pierce County Code 18.30.020, permits and approvals
- Labor and Industries contractor laws and rules
- Chapter 19.27 RCW, the State Building Code Act
Frequently asked questions
Do I have to do a pre-application screening?
On many rural parcels, yes. Most pre-application services are optional, but a Level 1 Pre-Application Screening is required for certain projects, including those with critical area indicators, special site restrictions, or properties served by on-site septic systems or private wells.
What do the permit tiers mean?
How much public process attaches. Tier 1 permits are reviewed administratively with no notice or hearing, and include residential building permits, demolition and accessory dwelling units. Tier 2 requires public notice but no hearing. Tier 3 requires notice and a public hearing before the Hearing Examiner.
How fast can I get a plumbing permit?
Immediately. Permits to install or replace residential plumbing and mechanical fixtures are issued immediately after payment and can be applied for online.
Do I need a permit for a retaining wall?
Where it exceeds 4 feet measured from the bottom of the footing to the top of the wall, and always where it supports a surcharge or load retention. No permit is required where it is under 4 feet, supports no surcharge and meets the one-to-one offset ratio.
Inspections are where schedules slip.
Get a free quote →Which code edition applies?
The state edition as amended by the county. Washington has a mandatory statewide building code. The codes enumerated in chapter 19.27 RCW, the State Building Code Act, are adopted and amended by the State Building Code Council within the Department of Enterprise Services and are required in all cities and counties, so local government administers and enforces them rather than choosing whether to have them. The 2021 editions took effect on the fifteenth of March, 2024 after two delays, and the 2024 editions are dated to take effect on the third of May, 2027. The state adopts a new edition every three years and reviews the codes in two groups, but all of them take effect on the same date (the 2021 codes on 15 March 2024, the 2024 codes on 3 May 2027). A city or county may make the state code stricter but cannot opt out of it; local changes affecting houses or apartments need State Building Code Council approval, and the residential energy code cannot be changed locally.
Who registers my contractor?
The state. Most Washington contractors register rather than hold a licence; electrical and plumbing contractors must also hold an L&I contractor licence. Under chapter 18.27 RCW a contractor registers with the Department of Labor and Industries, files a continuous surety bond of $30,000 as a general contractor or $15,000 as a specialty contractor, and keeps liability insurance on file, renewing every two years. Registration is not a competence test and does not authorise trade work: electrical certification comes under chapter 19.28 RCW and plumbing under chapter 18.106 RCW. The electrical permit comes from Tacoma Power where it serves the site, and otherwise from the Electrical Program at the Department of Labor and Industries (L&I).
Simplify Pierce County permitting with Alliance Permitting
A compulsory screening and a three-tier process are both knowable before filing. Knowing your tier tells you your calendar.
Trusted by leading builders, developers, and national contractors — 21+ years of filing in the jurisdictions we write about.
Contractors and builders choose Alliance for Pierce County because the work is done by people who have stood at the counter:
- 21+ years of filing, so the edition and the electrical route are settled before submission
- We confirm which state code group governs each part of the work on your filing date
- State contractor registration, bond and insurance verified as active before filing
- Energy code and critical areas documentation prepared rather than discovered in review
- Two inspection queues sequenced so a cover-up never waits on the wrong inspector
Alliance Permitting is a permit documentation and submission company in Washington. We prepare your paperwork, file it correctly and coordinate with the permitting authority through issuance. We are not a contractor and we do not perform licensed plan review or inspections; that work stays with your licensed team and the jurisdiction.
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More Washington permitting guides
This guide is provided by Alliance Permitting for general information about Pierce County permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.