Whatcom County runs from Puget Sound to the Cascade crest along the Canadian border, with more than four hundred miles of shoreline inside it. Two things shape permitting here that shape it almost nowhere else: the water, and the border.
Planning and Development Services handles building and land use permitting for unincorporated Whatcom County, with permitting within any city jurisdiction handled solely by that city.
This guide covers unincorporated Whatcom County. Bellingham is incorporated and permits separately, and is covered elsewhere in this series, as are Ferndale, Lynden, Blaine, Everson, Nooksack and Sumas within their own limits.
Flood repair permit fees are waived, for now. The County Executive is waiving permit fees within unincorporated Whatcom County for applications related to flood damage repairs from the December two thousand twenty-five flood event, under an executive order. Applications must be received before the end of December two thousand twenty-six, so anyone still holding off on flood repair work has a closing window rather than an open one.
What requires a building permit in Whatcom 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 amend the state code, but it amends upward from a floor it cannot opt out of. So the question in Whatcom County is not whether a code applies, but which edition is in force and what Whatcom County Planning and Development Services 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 Whatcom County Planning and Development Services before work starts.
Your electrical permit almost certainly does not come from the city. For most of Washington, electrical permits are issued and electrical inspections are carried out by the Electrical Program at the Department of Labour and Industries under chapter 296-46B WAC — not by the local building department. A minority of cities run their own electrical programme instead. Establish which applies to the parcel before you assume a single counter handles everything, because the electrical track runs on its own timetable and its own inspector.
The statewide features that catch projects everywhere
Four things shape a Washington filing more than the model code does. First, the edition is set by the state on a three-year cycle and adopted in two groups over a two-year timeline, so the building, residential, mechanical and plumbing parts do not all arrive on the same day. Second, plumbing runs on the Uniform Plumbing Code as adopted by the state, not the International Plumbing Code that most of the country uses. Third, the Washington State Energy Code is its own code under chapter 19.27A RCW rather than the international energy code, and it is among the most demanding in the country. Fourth, growth management and critical areas regulation reach ordinary residential work near wetlands, steep slopes, streams and shorelines far more often than owners expect. Cascadia subduction zone seismic detailing applies statewide. The border produces a requirement found nowhere else in this series: all structures moved from out of state or out of the country require a pre-move inspection performed by a Washington State licensed engineer, and the pre-move inspection form may only be obtained from the planning and development office — with the building permit application to move the structure following only once that inspection is complete and the building approved for the move
Who handles permitting in Whatcom County?
Planning and Development Services issues building and land use permits for unincorporated Whatcom County, and recommends that most applicants research the land use requirements of a property before moving forward to a building permit.
| Detail | Information |
|---|---|
| Department | Whatcom County Planning and Development Services |
| Address | 5280 Northwest Drive, Bellingham, WA 98226 |
| Phone | (360) 778-5900 |
| Counter hours | Monday to Friday, 10:00 a.m. to 3:30 p.m. |
| Flood fee waiver | For December 2025 flood damage repairs, applications before end of December 2026 |
| Shoreline | Over four hundred miles of shoreline types, each changing permit requirements |
| Site Plan Review | Optional in advance, and expedites the later building permit |
| Decks | Permit required over thirty inches above grade |
The shoreline reaches further than people expect. The department notes there are over four hundred miles of different shoreline types in the county, and that a property on one of them or within its buffer has different permitting requirements as a result — which is why land use research is recommended before the building permit rather than alongside it.
The Site Plan Review application is optional but designed to save money. It assists in designing the project footprint, the placement of structures and infrastructure such as septic tanks and fire truck turnarounds, and defines areas to be avoided such as streams and wetlands. Conducting one in advance lets a building permit start with an already-approved site plan, avoiding potentially expensive and lengthy redesigns later.
Permit types
Residential permits
Decks and walking surfaces over thirty inches above grade require building permits, with detailed plans including elevation drawings of all four sides at a defined scale. A building permit is required to construct a new foundation under an existing or moved building, and accessory dwelling units follow the same submittal process as a single family residence but are not allowed in all zones.
How Washington contractor credentials work
Washington registers contractors rather than licensing them. Under chapter 18.27 RCW every contractor must register with the Department of Labour and Industries, file a continuous surety bond — thirty thousand dollars for a general contractor, fifteen thousand for a specialty contractor — and keep liability insurance on file. Registration runs for two years and carries no continuing education requirement at the base level. Crucially, registration is not a competence test and it does not authorise trade work: electrical work requires certification under chapter 19.28 RCW and plumbing under chapter 18.106 RCW, each with its own examination and its own programme office.
A general registration does not let anyone touch the wiring or the pipes. A registered general contractor must subcontract electrical and plumbing work to appropriately certified trades, and an electrical contractor licence additionally requires at least one certified electrician on staff. Verify the registration is active and the bond and insurance current with Whatcom County Planning and Development Services and with the department, because registration lapses are common and an expired registration invalidates the credential the permit relies on.
Commercial permits
Plumbing and mechanical permits are stand-alone forms, and provided the work is not for a commercial purpose they require no master application, land use permit, site or building plans or additional submittal materials — which makes a straightforward fixture replacement considerably lighter than the full process.
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 Whatcom County Planning and Development Services requires for the specific building before filing.
Whatcom County permit costs and fees
Whatcom County publishes a unified fee schedule covering planning, engineering and environmental health. The flood damage repair fee waiver runs until applications close at the end of December two thousand twenty-six, and the county warns of a scam distributing false invoices — check fees through the customer portal, and the county never requests payment by wire transfer.
| Fee component | How it works |
|---|---|
| Building permit | Set by the local jurisdiction, usually on project valuation; the state sets the code, not the fee |
| Plan review | A percentage of the permit fee or a flat charge, set locally |
| Plumbing and mechanical | Separate local permits under the adopted plumbing and mechanical codes |
| Electrical | Usually a state permit fee through the Labour and Industries Electrical Program, not a city fee |
| Energy code | Compliance documentation for the Washington State Energy Code, and review time for it |
| Critical areas and land use | Separate review and fees where wetlands, slopes, streams or shorelines are involved |
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 on most projects it is paid to the state rather than to the city. Ask Whatcom County Planning and Development Services for the schedule in force on your filing date, and confirm the electrical route separately.
Need a real number for a specific Whatcom 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.
Trade permits and who may pull them
Trade permits are separate from the building permit and, in Washington, are not all issued by the same body. Plumbing and mechanical permits come from the local jurisdiction under the codes the state has adopted. Electrical permits come from the Electrical Program at the Department of Labour and Industries, unless this jurisdiction runs its own. That split is the single most common source of confusion on a Washington project.
Your electrical permit almost certainly does not come from the city. For most of Washington, electrical permits are issued and electrical inspections are carried out by the Electrical Program at the Department of Labour and Industries under chapter 296-46B WAC — not by the local building department. A minority of cities run their own electrical programme instead. Establish which applies to the parcel before you assume a single counter handles everything, because the electrical track runs on its own timetable and its own inspector.
- Electrical work follows chapter 19.28 RCW and the state electrical rules at chapter 296-46B WAC, performed by a certified electrician working for a licensed electrical contractor.
- Plumbing work follows the Uniform Plumbing Code as adopted by the state, performed by a plumber certified under chapter 18.106 RCW.
- Mechanical and fuel gas work follows the state mechanical and fuel gas provisions, permitted locally.
Permit required
- Service installations, panel upgrades, new circuits, solar PV and EV chargers
- New plumbing, repipes, water heater change-outs, fixtures, backflow and gas piping
- 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
How to apply for a Whatcom County building permit
Permit fees are waived for December two thousand twenty-five flood damage repairs, with applications closing at the end of December two thousand twenty-six.
With over four hundred miles of shoreline types, a property on or near one has different requirements.
An approved site plan expedites the building permit and avoids expensive redesign.
Structures moved from out of state or out of the country need one by a Washington licensed engineer, on a form only the office issues.
Non-commercial plumbing and mechanical permits need no master application or plans.
The county warns of a scam distributing false invoices and never requests payment by wire transfer.
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 city inspection that was never going to happen because the electrical permit sits with the state. Then edition confusion, because the state adopts in two groups and the parts do not all move together. Build review time into the schedule and confirm the checklist with Whatcom County Planning and Development Services before filing.
Approvals do not stay live indefinitely. Permit validity periods are set locally on top of the state code, so they differ between neighbouring jurisdictions and cannot be assumed from a previous job. On phased or financed work, confirm the expiry window and keep the permit alive with progress inspections.
Inspections in Whatcom 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. Required items must be on site at the time of inspection, and moved structures carry their own sequence beginning with the engineer’s pre-move inspection rather than with the county.
The point to plan around is that the electrical inspections may be booked with a different body entirely. Where the state Electrical Program holds the electrical permit, its inspector attends on the state’s 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.
Whatcom County permit search and official resources
Permit records in Washington are split the same way the permits are. Where Whatcom County Planning and Development Services is the authority for unincorporated Whatcom County, it holds the building, plumbing and mechanical records — but the electrical record for most projects sits with the state Electrical Program instead. If you are buying, refinancing or renovating, check both, because a clean local record does not mean the electrical work was ever permitted.
Confirm the edition, the local amendments and the electrical route. Washington sets a mandatory statewide minimum under chapter 19.27 RCW, but the edition moves in two groups on a three-year cycle and every jurisdiction may amend upward. 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.
- Whatcom County Planning and Development Services
- Whatcom County Building Services permit center
- Whatcom County residential buildings
- Labour and Industries contractor laws and rules
- RCW 19.27A.020, state energy code adoption
Frequently asked questions
Are flood repair permits really free?
The fees are waived, yes. The County Executive is waiving permit fees within unincorporated Whatcom County for applications related to flood damage repairs from the December two thousand twenty-five flood event, and those applications must be received before the end of December two thousand twenty-six.
I am moving a building in from Canada. What do I need?
A pre-move inspection first. All structures moved from out of state or out of the country require a pre-move inspection performed by a Washington State licensed engineer, on a form that may only be obtained from the planning and development office. Once the inspection is complete and the building approved for moving, you may apply for the building permit.
Why does the shoreline matter so much here?
Because there is so much of it. The county notes over four hundred miles of different shoreline types, and a property on one of them or within its buffer has different permitting requirements, which is why land use research is recommended before applying for a building permit.
Do I need a permit for a deck?
Decks and walking surfaces over thirty inches above grade require building permits, with detailed plans including elevation drawings of all four sides at the specified scale.
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 two thousand twenty-one editions took effect on the fifteenth of March, two thousand twenty-four after two delays, and the two thousand twenty-four editions are dated to take effect on the third of May, two thousand twenty-seven. Adoption runs in two groups over a two-year timeline, so the building, residential, mechanical and plumbing parts do not all move on the same day. A city or county may amend upward from the state minimum but cannot opt out of it.
Who registers my contractor?
The state. Washington registers contractors rather than licensing them. Under chapter 18.27 RCW a contractor registers with the Department of Labour and Industries, files a continuous surety bond of thirty thousand dollars as a general contractor or fifteen thousand 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 itself usually comes from the state rather than the city, because the Electrical Program at Labour and Industries issues electrical permits and carries out electrical inspections for most of Washington under chapter 296-46B WAC.
Simplify Whatcom County permitting with Alliance Permitting
A fee waiver with a closing date and a shoreline that reaches inland are both timing questions. We answer them before the application, not after.
Trusted by leading builders, developers, and national contractors — 22 years of filing in the jurisdictions we write about.
Contractors and builders choose Alliance for Whatcom County because the work is done by people who have stood at the counter:
- Twenty-two 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 Whatcom County permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.