What happens if you skip the permit (and you needed one)
- Stop-work orders carry $250–$750 civil penalty in King County (enforced by Burien), plus you must pull a retroactive permit at 150% of the original fee — easily $300–$675 extra.
- Insurance denial: your homeowner's policy may refuse to cover liability if an unpermitted deck collapses or causes injury; claim denials commonly cost $50,000+ in uninsured medical or structural repairs.
- Resale disclosure: Washington State requires you to disclose unpermitted work on the Real Estate Excise Tax affidavit; buyer can renegotiate price or walk, costing you $10,000–$30,000+ in lost equity.
- Lender block: if you refinance or take a home equity loan, the lender's title search may flag the unpermitted deck and freeze the transaction until you legalize it retroactively.
Burien attached deck permits — the key details
Burien enforces the 2021 International Building Code (IBC) and International Residential Code (IRC) with King County amendments. For decks, the baseline rule is IRC R507, which governs deck design, materials, connections, and footing depth. The critical threshold in Burien is simple: ANY attached deck requires a permit. Unlike some Washington cities (e.g., a few small municipalities) that exempt ground-level freestanding decks under 200 sq ft and 30 inches high, Burien does not grant this exemption to attached decks — even a small 8x10 attached deck at ground level needs a permit. The reason is structural: an attached deck transfers load into your house rim board, which means the house itself becomes part of the lateral-support system, and the city must verify that your ledger connection, flashing, and rim-board fastening meet code. Frost depth in Burien's primary service area (Puget Sound lowlands, west of I-5) is 12 inches minimum; this means deck footings must extend 12 inches below finished grade to avoid frost heave that would crack the deck or separate it from your house. If your property sits in the eastern hills (toward Renton or beyond), frost depth may be as deep as 30 inches — you'll need a soils or survey report to confirm, or contact Burien's Building Department directly for your parcel's frost zone.
Ledger-board flashing is non-negotiable in Burien permit review. IRC R507.9 requires the ledger to be flashed with a metal or composite material that directs water away from the house rim and band board; the flashing must extend up the house wall and under the house sheathing, and down and out over the deck rim. Water that gets trapped behind a non-compliant ledger causes rot in the rim board and house framing within 2-5 years in Puget Sound's 50+ inches of annual rain. Burien plan reviewers will reject any deck plan that shows a ledger without detailed flashing — and they may request an on-site inspection of ledger attachment before approval if the plan is vague. Your contractor or plan preparer must include a 1:3 or 1:4 scale detail drawing showing the ledger bolted (lag bolts or through-bolts on 16-inch centers) to solid rim board, with flashing lapped properly. Many homeowners and contractors under-estimate this step; budget $150–$300 in plan prep costs just for the ledger detail, and expect 1-2 review cycles if your first submission is incomplete.
Deck footing design in Burien must account for the region's soil conditions. Most of Burien sits on glacial till (dense, poorly sorted clay, silt, sand, gravel — stable but requires proper drainage), with some areas on volcanic soil or alluvial deposits near rivers and creeks. Footings must be dug below the frost line (12 inches in lowlands), set on undisturbed soil or compacted fill, and typically use concrete piers or post footings sized for deck load. If your deck is over 200 sq ft or over 30 inches high, your plan must include a sealed engineer's calculation showing footing depth, post size (typically 4x4 or 4x6 pressure-treated wood), beam size, joist sizing, and lateral-load resistance (Simpson DTT connectors or equivalent per IRC R507.9.2). Small decks (under 200 sq ft, under 30 inches high) may not require a stamped engineer's plan, but the contractor must still show footing detail and frost depth on the permit plan. Burien's plan review is done in-office by city staff or a contracted reviewer; the typical turnaround is 2-3 weeks for the first review, then 1-2 weeks for resubmission if corrections are needed.
Inspections and timeline: once your permit is approved, you'll schedule three inspections with Burien's Building Department. First is the footing inspection — the inspector verifies that holes are dug to frost depth (12 inches or deeper), that concrete footings are set on undisturbed soil, and that posts are properly sized and plumb. You must call for this inspection before you pour concrete. Second is the framing inspection — posts, beams, joists, ledger bolting, and lateral-load connectors are verified to match the plan and code. Third is the final inspection — decking, stairs, railings, and flashing are checked. Each inspection takes 1-2 business days to schedule and 30-60 minutes on-site. Total permit timeline from application to final approval is typically 4-6 weeks if there are no re-designs; expect 6-10 weeks if the plan reviewer flags issues (common for ledger detail or footing depth errors).
Fees for attached deck permits in Burien are based on valuation. The city uses a standardized valuation formula: roughly 1.5-2% of the estimated cost of the deck is the permit fee. A 12x16 deck (192 sq ft) with stairs and railings might cost $4,000–$6,000 to build; permit fee would be $75–$150 for the base permit plus $50–$100 for plan review, for a total of $150–$250. A larger 16x20 deck with electrical outlets might cost $8,000–$12,000; permit fee would be $120–$240 plus plan review. If your deck includes electrical (GFCI outlets) or plumbing, add $50–$100 for those sub-permits. No expedited review is typically available in Burien, but if you submit a complete, professional plan on the first go (especially if you hire a licensed designer or engineer), you'll move faster through the queue. Owner-builders are allowed in Burien for owner-occupied residential properties, but you'll still pay the same fees and must follow all code requirements — the only difference is you don't need a licensed contractor license, but you do need to pull the permit in your name and pass all inspections.
Three Burien deck (attached to house) scenarios
Ledger flashing and rot prevention in Burien's wet climate
Frost depth is the second most common rejection reason in Burien because the frost zone varies across the city and homeowners often under-dig or mis-estimate the required depth. Burien's standard Puget Sound lowland zone (west of I-5, toward the Sound) requires 12-inch frost depth minimum. East of I-5, toward Renton, Tukwila, and the foothills, frost depth increases to 18-30 inches. On a sloped lot or near a creek or wetland, the effective frost depth may be deeper due to groundwater dynamics. King County's building code requires footings to extend below the frost line and bear on undisturbed soil or properly compacted fill. If a footing is placed above the frost line, frost heave (the seasonal expansion of freezing soil) will lift the post, creating a gap between the post and the deck framing, causing the deck to sag or separate. Burien's footing inspection is non-negotiable: the inspector will measure the footing depth and verify it meets the frost-depth requirement for your parcel. To avoid rejection or re-work, contact Burien Building Department or hire a soils engineer to confirm your exact frost depth before you dig. A site-specific soils report costs $150–$400 and is worth it if your lot is on a slope or in the 18-30 inch zone. Once your footing depth is confirmed in the permit plan, the inspector will verify that holes are dug to the correct depth, that concrete is poured on undisturbed soil, and that posts are plumb and properly sized.
Owner-builder permits and plan-preparation options in Burien
Plan preparation for Burien deck permits can be done by you (if you're experienced), a licensed deck designer, a structural engineer, or a contractor. For decks under 200 sq ft and under 30 inches high, many plan preparers use simplified templates that show footing depth, post size, beam size, and ledger detail without a stamped engineer's seal. These cost $150–$400. For decks over 200 sq ft or over 30 inches high, King County code (adopted by Burien) typically requires a plan prepared by a professional engineer (PE) licensed in Washington, with a sealed stamp on the plans. A sealed engineer plan costs $600–$1,500 depending on complexity (especially if there's a hot tub load, or unusual soil conditions). If you hire a general contractor, the contractor often includes plan prep in their estimate or sub-contracts with a designer. If you're an owner-builder, you can hire a designer or engineer directly. When shopping for a plan preparer, ask: Does the preparer have Burien plan review experience? Can they show an example of a recently approved plan from Burien? Do they know the local frost depth and ledger flashing detail requirements? Are they familiar with lateral-load connectors and guardrail design? A plan preparer who has worked in Burien will anticipate common review comments and get approval faster.
Burien City Hall, 430 SW 152nd Street, Burien, WA 98166 (main city offices; building permit counter may be at this location or a separate department office — verify by phone or online portal)
Phone: (206) 241-3000 (main) or search 'Burien Building Department' for direct permit counter line | https://www.burien.org/ (navigate to Permits & Planning or Building Department page for online permit application; some online applications available, plan review and inspections scheduled via phone or in-person)
Mon-Fri 8:00 AM - 5:00 PM (hours may vary; verify online or by phone before visiting)
Common questions
Is a deck under 200 sq ft and under 30 inches high exempt from the permit in Burien?
No. Burien does not exempt attached decks of any size from the permit requirement. Even a small 8x10 attached deck at ground level requires a permit. Freestanding decks under 200 sq ft and under 30 inches high may qualify for exemption under IRC R105.2, but attached decks — which transfer load into the house rim board — always require a permit because the house becomes part of the structural system. Any uncertainty about whether your deck is attached or freestanding should be resolved in advance by contacting Burien Building Department.
What is the frost depth requirement for my Burien deck?
Frost depth in Burien is 12 inches in the Puget Sound lowlands (west of I-5, near the sound). East of I-5 and in elevated areas, frost depth is 18-30 inches. Confirm your exact frost zone by calling Burien Building Department with your address, or hire a soils engineer to do a site-specific report ($150–$400). The plan must show footing depth meeting or exceeding the frost line, and the footing inspector will verify depth before concrete is poured. If your footing is above the frost line, frost heave will lift your deck.
Do I need a stamped engineer plan for my deck?
For decks under 200 sq ft and under 30 inches high, a stamped engineer plan is typically not required by Burien, but a detailed plan showing footing depth, post/beam sizing, ledger flashing, and any stairs is required. For decks over 200 sq ft or over 30 inches high, or if the deck carries a concentrated load (like a hot tub), a plan stamped by a Washington-licensed structural engineer is required. A plan preparer (deck designer) can also prepare the plan; ask the preparer if their work will meet Burien requirements without an engineer seal.
How much does a deck permit cost in Burien?
Permit fees in Burien are based on the estimated valuation of the deck. The city typically charges 1.5-2% of the estimated construction cost. A small 10x12 deck ($3,500–$5,000) might cost $75–$150 to permit. A 16x20 deck ($7,000–$10,000) might cost $150–$250 to permit. Plan review fees are separate and typically $50–$150. Electrical and plumbing sub-permits add $50–$150 each. Get an estimate from the city's permit counter or online portal when you submit your application.
How long does deck permit review take in Burien?
Typical turnaround for initial plan review is 2-3 weeks. If the reviewer requests corrections (common for ledger detail or footing depth), resubmission review is another 1-2 weeks. Once the permit is approved, scheduling inspections (footing, framing, final) typically takes 4-6 business days between each inspection, so total timeline from application to final approval is 4-8 weeks. If your plan is incomplete or requires a re-design, budget 6-10 weeks or more.
What inspections are required for an attached deck in Burien?
Three inspections are mandatory: (1) Footing inspection — before concrete is poured, the inspector verifies footing depth, hole size, and post size. (2) Framing inspection — after posts, beams, joists, and ledger are installed, the inspector checks sizing, connections, bolt spacing, and lateral-load connectors. (3) Final inspection — decking, stairs, railings, and flashing are verified. For decks with electrical or plumbing, additional rough-in and final inspections for those trades are required. You must call Burien to schedule each inspection at least 1 business day in advance.
Can I build an attached deck without a permit and disclose it later when I sell the house?
You could, but it is strongly not recommended. Washington State requires disclosure of unpermitted work on the Real Estate Excise Tax affidavit and the property disclosure. Failure to disclose is fraud and exposes you to liability. A buyer can sue for rescission or damages. Even if you later pull a retroactive permit, you'll pay 150% of the original permit fee plus all inspection costs. If the unpermitted deck has code violations (bad footing depth, missing ledger flashing), you may be forced to remove or rebuild it before selling, costing $3,000–$8,000+. Insurance may deny a claim related to unpermitted work, leaving you exposed to uninsured liability if the deck injures someone. Get the permit upfront.
What is IRC R507.9 and why is it important for my Burien deck?
IRC R507.9 covers deck ledger board installation and is the most critical code section for attached decks. It requires the ledger to be flashed with corrosion-resistant material (metal flashing or synthetic membrane), bolted to solid rim board with lag bolts or through-bolts on 16-inch centers, and flashing must extend under house sheathing and over the deck band board. This prevents water from infiltrating behind the ledger and causing rim-board rot — the most common failure in Puget Sound wet climate. Burien plan reviewers will always verify this detail and may reject a plan if the ledger flashing drawing is missing or non-compliant.
Do I need a guardrail on my deck in Burien?
Yes, if the deck is over 30 inches above grade. Per IRC R307.1, decks over 30 inches high require a guardrail (also called a railing or guard) that is 36-42 inches tall, with balusters or infill spaced no more than 4 inches apart (so a 4-inch sphere cannot pass through). The guardrail must resist 200 lbs of concentrated horizontal load. For decks under 30 inches high, guardrails are optional. Stairs always require handrails if there are four or more risers.
What if the deck plan reviewer rejects my submission? How long does it take to fix and resubmit?
Common rejection reasons are: ledger flashing detail missing, footing depth shown above frost line, stair riser/tread dimensions off-code, or beam/post sizing incomplete. Once you receive the rejection comment letter, work with your plan preparer or designer to correct the issues (usually 1-3 business days). Resubmit the corrected plan; review turnaround on the second submission is typically 1-2 weeks. Most plans are approved on the second submission if corrections are complete. Complex plans or those requiring structural re-design may take a third cycle. Budget an extra 2-4 weeks in your timeline if you anticipate corrections.