Deck Permit in Bellevue, Washington
It depends
Sometimes, depending on the project
Before installing or adding to a deck over 30 inches above grade in Bellevue
Issued byCity of Bellevue Development Services
By Mario Bailey, verified against official sources
Quick answer
In Bellevue a deck where the highest walking surface is 30 inches or less above grade does not require a building permit. Decks with a walking surface more than 30 inches above grade require a building permit with plan review. Submit applications through MyBuildingPermit.com.
Typical threshold: decks where the highest walking surface is 30 inches or less above grade do not require a permit; decks over 30 inches above grade require a permit with plan review.
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When a permit is usually needed
Before installing or adding to a deck over 30 inches above grade in Bellevue
What your deck permit must meet in Washington
A residential deck in Washington is built to the 2021 International Residential Code as adopted with state amendments (WAC 51-51, Washington State Residential Code 2021), which among other things raises the deck live load to 60 psf. The prescriptive deck rules cover guards, stairs, footings, and a positive ledger and lateral-load connection.
- Guards are required whenever the deck walking surface is more than 30 inches above the grade or floor below (R312).
- Required deck guards must be at least 36 inches high, with openings sized so a 4-inch diameter sphere cannot pass through (R312).
- Deck stairs (any flight with 4 or more risers) allow a maximum riser height of 7 3/4 inches, require a minimum tread depth of 10 inches, and a minimum stairway width of 36 inches (R311.7).
- Stairs with 4 or more risers need a handrail on at least one side, with the top 34 to 38 inches above the stair nosing (R311.7.8).
- Exterior footings must be placed at least 12 inches below undisturbed ground (R403.1.4); frost-protection depth is not a single statewide number but is set by the local jurisdiction, so confirm frost depth with the local building department (R403.1.4.1).
- The deck ledger must have a positive connection to the band joist using lag screws or bolts spaced per Table R507.9.1.3, not toenails or deck screws, and the band joist must be minimum 2-inch nominal solid-sawn lumber or engineered rim board (R507.9).
- A lateral load connection is required: hold-down tension devices in at least two locations per deck, each with a capacity of not less than 1,500 pounds (R507.9.2).
Based on Washington State Residential Code 2021 (2021 IRC with WA amendments, WAC 51-51): R312, R311.7, R403.1.4, R507.9. Read the code. Local amendments can be stricter; confirm the current requirement with your office before you build.
What a deck permit costs in Bellevue
How Bellevue compares in Washington
Across the Washington jurisdictions we have verified, the same threshold runs from 18 to 30, so a project that is exempt here may still need a permit one county over.
| Jurisdiction | Permit needed? | Threshold |
|---|---|---|
| Bellevuethis page | It depends | decks where the highest walking surface is 30 inches or less above grade do not require a permit; decks over 30 inches above grade require a permit with plan review |
| Clark County | It depends | Exempt only if the deck does not exceed 200 square feet, is not more than 30 inches above grade at any point, is not attached to a dwelling, does not serve a required exit door, and is not used for a hot tub or pool; all other decks require a permit. |
| King County | It depends | uncovered decks 30 inches or less above ground do not require a building permit in unincorporated King County; decks over 30 inches above grade require a permit |
| Pierce County | It depends | Decks not more than 30 inches above grade at any point, and not over any story or basement below, are exempt; Pierce County code sets no separate floor area cap for decks; taller decks, or decks over a story or basement, require a building permit. |
| Seattle | It depends | decks more than 18 inches above grade require a permit; decks 18 inches or less above grade and not over a basement do not require a permit |
| Snohomish County | It depends | uncovered decks, deck steps, and uncovered porches for residential buildings exempt if 30 inches or less above adjacent grade at any point, not over a basement or story below, and not part of a required accessible route; covered or taller decks require a permit |
| Thurston County | It depends | Decks are exempt if the surface is 30 inches or less from the ground to the top of the deck. |
Closest deck permit thresholds outside Washington
Jurisdictions we cover whose limit sits nearest Bellevue's 30 inches.
- Lake County, Florida, A deck built by the property owner on the owner's own personal residence is exempt from a building permit if it does not exceed 30 inches above grade and a 120-square-foot footprint
- Peoria, Arizona, Platforms not more than 30 inches above adjacent grade that are not over a basement or story below and are not part of an accessible route are exempt from a permit.
- Miami-Dade County, Florida, wood deck 18 inches or less above ground is exempt; decks higher than 18 inches require a building permit
- Prince William County, Virginia, building permit required if deck floor is 16.5 inches or more above finished grade
How to apply in Bellevue
In Bellevue, a residential deck permit application is a set of construction documents that show what will be built and prove it meets the IRC deck provisions. In practice that means a scaled site plan locating the deck and its setbacks, plus deck plans and structural details covering the footings, posts, beams, joists, ledger, guards, and stairs.
What most deck permit applications include:
- For Bellevue, a permit application identifying the work, the deck's size (square footage), and whether electrical work such as lights or receptacles is included, submitted for plan review before construction begins (IRC R106).
- For Bellevue, a scaled site plan (for example 1/4 inch to 1 foot) showing the new deck's location relative to the house, its overall length and width, and dimensioned distances from the deck to all property lines and other structures so required setbacks can be verified (IRC R106.1.1).
- For Bellevue, a deck plan drawn to scale showing overall dimensions and the framing layout: joist size, spacing, span, and species; beam size and span; post size and height; and footing or pier size and depth (IRC R507.4 posts, R507.5 beams, R507.6 joists, R507.3 footings).
- For Bellevue, a section or side elevation with connection details showing the ledger attachment to the house band joist with flashing, the fastener or bolt schedule, joist hangers, post-to-beam and post-to-footing connections, and the required lateral load connection (IRC R507.9 ledger connection, R507.9.2 lateral connection, R507.2.4 flashing).
- Footing sizing derived from tributary area, the soil bearing value, and design loads per IRC Table R507.3.1, with footings shown bearing on undisturbed soil at the frost depth required by the jurisdiction (IRC R507.3).
- Details for the guards required where the walking surface is more than 30 inches above grade, and for the stairs and handrails, showing guard height and opening limits, stair riser and tread dimensions, and handrail location (IRC R312 guards, R311.7 stairs and handrails).
- For designs that fall outside the prescriptive R507 tables (for example multi-story or stacked decks, or a ledger attached to a cantilever), engineered and stamped structural plans are submitted in place of the prescriptive details (IRC R507.1 and R301).
General submittal guidance from IRC R106.1.1 (construction documents) and IRC R507 (exterior decks), 2021 IRC. Source. City of Bellevue Development Services sets the exact checklist for Bellevue.
Where to apply in Bellevue:
City of Bellevue Development Services
- 450 110th Ave NE, Bellevue, WA 98004
- Phone: (425) 452-4898
- Email: permits@bellevuewa.gov
Deck Permit in Bellevue compared with nearby Washington localities
| Locality | Permit needed? | Threshold | What each Washington schedule says | Verified |
|---|---|---|---|---|
| Bellevue | It depends | decks where the highest walking surface is 30 inches or less above grade do not require a permit; decks over 30 inches above grade require a permit with plan review | Building permit fee by valuation per Table 4 of Ordinance 6879, $44 inspection fee... | |
| Clark County | It depends | Exempt only if the deck does not exceed 200 square feet, is not more than 30 inches above grade at any point, is not attached to a dwelling, does not serve a required exit door, and is not used for a hot tub or pool; all other decks require a permit. | Fees are established by county ordinance and calculated automatically during the... | |
| King County | It depends | uncovered decks 30 inches or less above ground do not require a building permit in unincorporated King County; decks over 30 inches above grade require a permit | Most permit fees increased approximately 14% on January 1 2026 plus a $126 application... | |
| Pierce County | It depends | Decks not more than 30 inches above grade at any point, and not over any story or basement below, are exempt; Pierce County code sets no separate floor area cap for decks; taller decks, or decks over a story or basement, require a building permit. | Building permit fee follows PCC Table 17C.10-1-B (valuation based): $69.00 for... | |
| Seattle | It depends | decks more than 18 inches above grade require a permit; decks 18 inches or less above grade and not over a basement do not require a permit | Priced as a subject-to-field-inspection or addition/alteration construction permit by... |
Inspections and closing out your permit
In Bellevue, deck work is inspected in sequence as it is built: the footings before concrete is placed, the framing before the decking boards go down, and a final inspection once the deck is complete. Each stage checks the items that would be hidden or unsafe if missed.
- Footing or pier inspection in Bellevue: after the holes are dug and any forms or reinforcing are set but before concrete is placed, the inspector checks footing depth and diameter, a flat undisturbed bearing surface, and that the holes are free of water (IRC R109.1.1 foundation inspection; R507.3 footings).
- Framing inspection in Bellevue: after the deck is framed but before the decking conceals it, the inspector verifies the ledger attachment and its flashing, the fastener and bolt schedule, joist hangers and metal connectors, post-to-beam and post-to-footing connections, and the lateral load connection; call it before decking is installed (IRC R109.1.4 frame inspection; R507.9 ledger and flashing).
- Final inspection in Bellevue: after the deck is complete and before it is used, the inspector confirms guard height and opening limits (a 4 inch sphere must not pass, 4 3/8 inch at stairs), stair riser and tread dimensions, handrail height and graspability where there are 4 or more risers, stair landings, and required stair lighting (IRC R109.1.6 final inspection; R312 guards, R311.7 stairs and handrails).
Schedule each inspection in advance and pass the final before you use the work or close the permit. Request inspections through the Bellevue permit portal or by phone at (425) 452-4898.
Inspection sequence from IRC R109 (inspections: R109.1.1 footing before concrete, R109.1.4 frame, R109.1.6 final), 2021 IRC. Source. An open permit left un-inspected can surface later in a title search or home sale.
Your Deck Permit checklist for Bellevue
- Confirm the requirement. Sometimes, depending on the project. Typical threshold: decks where the highest walking surface is 30 inches or less above grade do not require a permit; decks over 30 inches above grade require a permit with plan review. Usually needed: Before installing or adding to a deck over 30 inches above grade in Bellevue.
- Budget the fee. Building permit fee by valuation per Table 4 of Ordinance 6879, $44 inspection fee minimum for valuation up to $500 plus plan review at 65% of the inspection fee plus a $25 state building code fee at issuance, effective 2026-01-01. Official fee schedule.
- Apply. In Bellevue, a residential deck permit application is a set of construction documents that show what will be built and prove it meets the IRC deck provisions. In practice that means a scaled site plan locating the deck and its setbacks, plus deck plans and structural details covering the footings, posts, beams, joists, ledger, guards, and stairs. Start at the Bellevue permit portal.
- Keep the office details handy. City of Bellevue Development Services. Phone: (425) 452-4898. Address: 450 110th Ave NE, Bellevue, WA 98004.
- Plan for inspections. In Bellevue, deck work is inspected in sequence as it is built: the footings before concrete is placed, the framing before the decking boards go down, and a final inspection once the deck is complete. Each stage checks the items that would be hidden or unsafe if missed.
Compiled from the official sources on this page. Last checked .
Permitting activity in Bellevue
In 2024, Bellevue authorized permits for 589 new residential housing units (254 single-family, 335 in multi-family buildings), valued at $274M, down from 802 the year before. That works out to about 4 permits per 1,000 residents.
Source: U.S. Census Bureau, Building Permits Survey, 2024 annual data · population 148,073.
About Bellevue
Bellevue has about 65,536 housing units. The median home is valued at $1,203,100, against a median household income of $161,300. About 52% of homes are owner-occupied, and the typical home was built around 1981.
Source: U.S. Census Bureau, American Community Survey 2023 5-year.
Frequently asked questions
- Do you need a deck permit in Bellevue?
- In Bellevue a deck where the highest walking surface is 30 inches or less above grade does not require a building permit. Decks with a walking surface more than 30 inches above grade require a building permit with plan review. Submit applications through MyBuildingPermit.com. Decks where the highest walking surface is 30 inches or less above grade do not require a permit; decks over 30 inches above grade require a permit with plan review. Always confirm with the office before starting.
- How much does a deck permit cost in Bellevue?
- Building permit fee by valuation per Table 4 of Ordinance 6879, $44 inspection fee minimum for valuation up to $500 plus plan review at 65% of the inspection fee plus a $25 state building code fee at issuance, effective 2026-01-01. See the official fee schedule for current amounts.
- Where do you apply for a deck permit in Bellevue?
- You can apply through the Bellevue permit portal or contact the City of Bellevue Development Services directly. The links are listed on this page.
- Can a homeowner pull a deck permit themselves in Bellevue?
- Under Washington law (RCW 18.27.090(11), (12); RCW 19.28.261(1); RCW 18.106.150(1)): Washington lets homeowners do their own construction work, including the licensed trades, on property they own. RCW 18.27.090(12) exempts any person working on his or her own property from contractor registration, but the exemption does not apply if you do contractor type work for the purpose of selling, demolishing, or leasing the property, and the separate owner exemption in RCW 18.27.090(11) is lost if you sell or lease improved property owned less than 12 months. For electrical work, RCW 19.28.261 lets you wire your own residence, farm, or place of business without an electrician license, unless the work is on construction of a new building intended for rent, sale, or lease, or on property offered for sale within 12 months after you obtained it. RCW 18.106.150(1) gives the same kind of exemption for plumbing work at your own residence, farm, or place of business. These exemptions waive the license, not the permit: an owner doing electrical work still buys an L&I electrical work permit and passes inspection (WAC 296-46B-901), and building and plumbing permits still come from your local building department. Confirm how Bellevue applies this before you apply.
From the Library
What else needs a permit in Bellevue
Every other permit type we have verified for this jurisdiction, with the rule that applies here.
| Project | Permit needed? | Threshold | Typical fee |
|---|---|---|---|
| Electrical Permit | Permit required | Not specified | Electrical permit fee by valuation per Table 6 of Ordinance 6879, $79 inspection fee... |
| Fence Permit | It depends | fences over 8 feet in height require a building permit; fences 8 feet or under do not require a permit | No separate fence line item |
| HVAC Permit | Permit required | Not specified | Flat single-family mechanical inspection fees per Table 8 of Ordinance 6879: furnace up... |
| Patio Permit | No permit needed | Not specified | No separate patio line item |
| Plumbing Permit | It depends | permit required for new plumbing, concealed piping, and fixture additions; replacing a sink toilet or faucet not concealed in a wall does not require a permit | Plumbing permit fee per Table 11 of Ordinance 6879, $50 for the first fixture plus... |
| Pool Permit | It depends | swimming pools over 24 inches deep require a permit with plan review; above-ground pools 24 inches or less may be exempt | Pool equipment electrical inspection fee of $94 without plan review per Table 7 of... |
| Roof Replacement Permit | It depends | permit required when modifying or replacing the roof sheathing or making structural changes; simple shingle replacement may not require a permit | Flat Re-roof Permit inspection fee of $290 due at issuance per Table 5 of Ordinance... |
| Shed Permit | It depends | detached storage sheds playhouses or gazebos with a floor area of 200 square feet or less do not require a building permit; structures over 200 square feet require a permit | No separate shed line item |
| Solar Permit | It depends | electrical permit required for all solar systems; building permit not required for rooftop single-family systems with dead load under 3.5 lbs per sq ft and panels no more than 18 inches above roof surface | Solar panel installations are electrical permits with fee by valuation per Table 6 of... |
Deck Permit in other Washington localities
Everything above, sourced
Code references
National and state model-code sections the general guidance on this page is drawn from. They are not Bellevue documents; the office above sets the local rules.
How this deck permit page for Bellevue was verified. 1 official source: bellevuewa.gov; fee schedule: official document. Last checked by Mario Bailey, not confirmed with City of Bellevue Development Services. Rules change; confirm before you build. How we verify.
Last checked: Report an error on this page
Compare Deck Permit requirements across Washington localities
Washington rule changes