Do I need a permit for a small deck?

Yes, if it's elevated 30 inches or higher off grade. Spokane treats 30 inches as the threshold above which fall protection and structural code apply. Even ground-level attached decks can trigger a permit if they're over 200 square feet or have stairs. The safest move: measure and call the Building Department with your dimensions and whether the deck is attached or detached. A 10-minute call saves a rejected permit.

How deep do deck footings need to be in Spokane?

Frost depth is the driver. East of Spokane, plan for 30 inches; west Spokane is closer to 12 inches. But glacial till and volcanic soils complicate things — you may qualify for a Frost-Protected Shallow Foundation (FPSF), which allows shallower footings with insulation and drainage if the soil is suitable. The permit application will ask for soil type and location. If you're unsure, send a photo of your excavation to the Building Department and ask before pouring. Wrong footing depth is a failed inspection and a costly reinterpretation.

Can I pull a permit myself as an owner-builder?

Yes. Washington State allows owner-builders to pull permits for owner-occupied residential work without a contractor's license. You'll sign an affidavit swearing the project is owner-occupied and you're doing the work or managing it. You can hire licensed subcontractors for electrical, plumbing, HVAC, and other trades — they pull subpermits under your parent permit. The city's website has the affidavit template. This is a huge advantage if you're doing the work or managing trades yourself.

What's the typical cost of a Spokane residential permit?

Fees vary by project type and valuation. Spokane typically uses 0.5–2% of the project value, capped at a maximum for certain categories. A deck permit might run $75–$200; an addition $300–$1500+ depending on square footage and complexity. Administrative (over-the-counter) permits are usually cheaper than those requiring full plan review. Electrical subpermits are typically $50–$150. Ask the Building Department for a fee estimate when you call — they'll give you an accurate number based on your project scope.

How long does a permit take?

Administrative permits (simple decks, sheds, repairs) can be approved over-the-counter in 1–3 days. Standard plan-review permits (additions, significant remodels) typically take 1–2 weeks. If the department issues a Request for Information (RFI), you have 10 business days to respond. Missing that deadline voids your application. Online filing is faster than paper; submit through the city's portal if possible.

Do I need a site plan?

Yes, for most permits. You need to show property lines, setbacks, and the location of the structure. For a deck or shed, a hand-drawn sketch is fine as long as dimensions and property lines are clear. For additions and larger projects, the department may ask for a more formal survey or site plan. A missing or unclear site plan is the #1 reason for first-round rejections — take time to get this right before submitting.

What happens if I skip the permit?

The short answer: you're liable for unpermitted work when you sell or if someone gets hurt on the property. Buyers' lenders often require title searches that flag unpermitted work — you'll either have to tear it down, obtain a retroactive permit (expensive and not always possible), or accept a price hit. If the city finds out during a complaint or inspection, you could be fined, ordered to remove the work, or required to obtain a belated permit with penalties. The risk grows if the work is structural or has electrical/plumbing — those failures can be catastrophic and won't be insured.

Can I get a variance if my project doesn't meet code?

Maybe, but it's not automatic. Spokane has a formal variance process for projects that don't meet code but have unique site conditions or practical hardship. You file the variance request as part of your permit application and attend a hearing in front of the Hearing Examiner. Variances are expensive and take time (30–60 days). The better move: design your project to meet code from the start. Talk to the Building Department about creative solutions (FPSF, alternative materials, creative setback designs) before filing.

Do I need an engineer stamp for my plans?

Not always. Simple decks, sheds, and minor repairs don't require a PE stamp — you can use IRC prescriptive code tables. Additions, structural changes, and projects on difficult sites usually do need a stamp, especially if the design doesn't fit standard tables. Ask the Building Department when you call with your project description — they'll tell you upfront if an engineer is required.

What's the difference between administrative and standard review permits?

Administrative permits are approved over-the-counter for low-risk projects (simple decks, sheds, minor repairs) and typically take 1–3 days. Standard permits require a full plan review (1–2 weeks) for additions, remodels, and any structural changes. Your online portal submission will indicate which track your project is on. If it's admin and the reviewer sees a complication, they may bump it to standard review, which adds time.

Building Permits in Spokane, WA (2026)

Do I need a permit in Spokane, WA?

Spokane's permit process is straightforward once you understand the trigger: if your project changes the structure, adds electrical or plumbing, adds square footage, or alters drainage, you need a permit. The City of Spokane Building Department handles all residential permits for new construction, additions, renovations, and accessory structures. Spokane sits in two frost zones — 12 inches on the west side near Puget Sound, and 30 inches or deeper east of the city — which affects deck footings, foundation depth, and frost-protected shallow foundation (FPSF) eligibility. The city has adopted the 2018 International Building Code (IBC) with Washington State amendments, and the state allows owner-builders to pull permits for owner-occupied residential projects without a contractor's license. Most routine permits can be filed online through the city's permit portal, and over-the-counter applications are also welcome. Plan on 1–2 weeks for plan review on standard projects, longer if there are structural questions or site-specific issues.

What's specific to Spokane permits

Spokane's frost-depth variation is the biggest structural wild card. The city sits on glacial till and volcanic soil that behaves differently east and west. West Spokane (closer to the Puget Sound region) has a 12-inch frost depth — still deeper than many think — while east Spokane and the surrounding county can require 30 inches or more. The IRC allows Frost-Protected Shallow Foundations (FPSF) under certain conditions, which can save thousands on deck and small-structure footings if your site qualifies. The permit application will ask for soil type and location; don't guess. If you're not sure whether FPSF applies to your project, ask the Building Department before submitting — a rejected permit is costlier than a 10-minute call.

Spokane Building Department processes most residential permits in one of two tracks: administrative review (over-the-counter, 1–3 days) for simple projects like sheds, decks, and repairs, or standard plan review (1–2 weeks) for additions, remodels, and anything with structural changes. Your permit portal submission will indicate which track your project is on. If the department has questions, they'll issue a Request for Information (RFI) and you'll have 10 business days to respond — missing that deadline voids your application and you start over. Online filing is the norm; paper submissions still happen but you'll wait longer for intake.

The city requires site plans on most permits. For a deck or shed, that means a scaled sketch showing property lines, setbacks, and the structure's location — hand-drawn is fine as long as dimensions are clear and property lines are marked. A missing or unclear site plan is the #1 reason for first-round rejections. If your lot is tight or you're in a corner-lot sight triangle (which affects fence and addition placements), include that detail proactively; it saves back-and-forth.

Washington State allows owner-builders to pull permits for owner-occupied residential work without a contractor's license — a major advantage if you're doing the work yourself or managing subcontractors. You'll need to sign an affidavit swearing the project is owner-occupied and you're the owner or a family member doing the work. Some specialty trades (electrical, plumbing, HVAC) still require licensed-contractor subpermits, but you can file those under your owner-builder permit. The city's website has the affidavit template; fill it out, attach it to your permit application, and you're good.

Spokane uses the 2018 IBC with Washington State amendments, which means energy code is the 2018 IECC with state tweaks. New construction and substantial remodels (affecting more than 25% of wall area) trigger energy-code compliance. For most homeowners, this means meeting insulation R-values and window U-factors for your climate zone — Spokane's interior location (zones 4C west, 5B east) has different requirements than western Washington. Your plans don't need to be stamped by an engineer for routine additions and decks, but the department will ask for structural details (joist sizing, post footings, ledger board connections) if the design isn't obvious from code tables.

Most common Spokane permit projects

These are the projects Spokane homeowners pull permits for most often. Click any project to see local thresholds, fees, and what to file.

Decks

Any attached or detached deck 30 inches or higher requires a permit. Frost depth is critical: 30+ inches east of Spokane means deep footings. Ledger-board flashing and post-to-beam connections are the #1 inspection points.

Fences

Fences over 6 feet require a permit. Corner-lot sight-triangle rules are strict in Spokane — fences in sight triangles are limited to 3 feet and open construction. Property-line fences don't always need surveys, but confirm with the Building Department if your lot is irregular.

Roof replacement

Spokane requires a permit for full roof replacement. If you're re-roofing with the same material and slope, it's often faster, but any structural repairs or changes to load paths trigger full plan review. Snow load is a factor in Spokane — 25 pounds per square foot in many areas.

Electrical work

Any new circuit, panel upgrade, or outlet installation outside the home requires a subpermit under your parent building permit or as a standalone electrical permit. Licensed electrician required for most work; owner-builders can pull the permit but a licensed electrician must do inspections.

Room additions

Any room addition, bump-out, or enclosed porch requires a permit and full plan review. Spokane wants to see foundation design, framing plan, electrical and mechanical tie-ins, and energy-code compliance. Plan on 2–3 weeks for review.

Do I need a building permit in Spokane, WA?