Remodel FAQ — Seattle 2026
The specific permit, cost, licensing, and safety questions Seattle homeowners ask before starting a renovation, DADU, or addition. SDCI permitting, WA L&I licensing, all-electric code, tree protection, Craftsman renovation, earthquake retrofit, 2026 Seattle pricing.
Questions LA homeowners actually ask
Yes for plumbing, electrical, gas, mechanical, or wall changes. Seattle Department of Construction & Inspections (SDCI) uses the Seattle Services Portal for permit submission. SDCI offers Subject-To-Field-Inspection (STFI) for many like-for-like residential remodels — no plan-check, just inspections at rough-in and final. Plan-check kitchens take 8-14 weeks in 2026; STFI projects often issue in 3-7 days. Cosmetic-only swaps are permit-exempt. Seattle's adoption of the 2021 Washington State Energy Code adds blower-door, insulation, and appliance-efficiency standards on every renovation — your contractor and electrician should be conversant.
Yes, and Seattle has the most permissive ADU/DADU framework of any major US city as of 2026. Single-family lots can build BOTH an attached ADU (AADU, in the main house) AND a detached ADU (DADU, separate structure) under HALA reforms — up to 2,000 sq ft total ADU. No owner-occupancy requirement since 2019. Permits run 8-14 weeks for SDCI standard review, 4-8 weeks for pre-approved DADU plans (Seattle's library of designs that bypass full architectural review). Plan-check fees $4K-$12K, total city + state fees on a DADU run $20K-$45K. The Microsoft / Amazon income corridor makes Seattle DADUs the strongest cash-flow ADU market in the US.
Seattle's Tree Protection Ordinance (SMC 25.11, updated 2023) protects Tier 1 (Exceptional) trees and Tier 2 (Significant) trees on private property. If your renovation includes a DADU build, an addition, or any grading near a 24-inch-diameter or larger tree, you need a Tree Protection Plan and may need an arborist report. Removal permits cost $400-$2,000 per tree, with mandatory replacement planting. Pacific Northwest species — Douglas Fir, Western Red Cedar, Bigleaf Maple — over the size threshold are heavily protected. Plan ahead: incorporate the tree footprint into siting, or budget the arborist + replacement cost. Tree-related delays add 4-10 weeks to permit timelines.
Seattle ranges in 2026: $48K-$85K for a mid-range kitchen (semi-custom cabinets, quartz, mid-tier appliances, same footprint), $95K-$165K for a full-gut with custom cabinetry, Sub-Zero/Wolf, and structural opening to dining, and $185K+ for Madison Park / Magnolia / Capitol Hill view homes with structural changes. Seattle labor is the highest-cost in the Pacific Northwest — $95-$140/hr for licensed trades — driven by tech-sector competition for skilled trades. Permits and SDCI fees add $3K-$10K. Building site access on Seattle's hill neighborhoods (Queen Anne, Magnolia, West Seattle) adds craning and delivery surcharges.
$240K-$520K for a typical 600-1,000 sq ft DADU in Seattle in 2026. Pre-approved DADU plans (Seattle's design library) trim 8-14 weeks of architecture and run lower: $200K-$400K. Lot constraints drive variance: tree protection, sloped lots (common in West Seattle and Queen Anne), utility runs, and whether the lot has alley access for construction. Sewer side-sewer connection in Seattle averages $15K-$45K depending on depth and main-line distance. Energy-code compliance (heat-pump-only, all-electric per Seattle's 2021 fossil-fuel ban on new construction) adds $8K-$25K vs gas-allowed jurisdictions. Backyard cottage is also legal in Seattle as a separate ownership type post-HALA.
$350-$650 per square foot for a Seattle Craftsman gut renovation in 2026. Seattle's housing stock is heavily Craftsman (1905-1925) in Wallingford, Ballard, Capitol Hill, Mt Baker, and West Seattle. Period-appropriate restoration adds 15-25% over comparable modern: original-profile siding, true-divided-light windows, hardwood-floor matching, and original-trim millwork. A 1,800 sq ft Craftsman gut typically runs $700K-$1.2M including basement-finish, master-suite addition, and code-compliant electrical service upgrade (most need 200A+ from original 60A). Seattle landmark district homes (Pike Place, Pioneer Square, some Capitol Hill blocks) add Landmark Preservation Board review.
Washington contractors are licensed by the Washington State Department of Labor & Industries (L&I), not the city. Verify at lni.wa.gov by entering the contractor's name or registration number — must be 'Active', registered as 'General' or 'Specialty' (matching the work scope), and bonded. WA L&I requires a $12,000 bond for Generals and $6,000 for Specialty contractors, plus general liability + workers' comp + a UBI tax registration. Seattle does not issue a separate city contractor license, but a Seattle Business License is required for any contractor operating in city limits. Verify both: L&I license active AND Seattle business license valid.
Washington's contractor bond — $12,000 for Generals, $6,000 for Specialty — is the homeowner's primary recourse if a contractor abandons the job, fails to pay subs, or does defective work. Claims are filed through L&I and resolved over months. Critical limit: the bond is shared across all claims — multiple claimants split the available funds. For larger projects ($300K+), the $12K bond is rarely enough; ask your contractor for a project-specific performance bond (typically 1-2% of contract value). Always verify bond status at lni.wa.gov before signing — a contractor can be 'licensed' with an expired bond and you'd have no recovery.
Yes. WA L&I licenses electricians (EL01 Master, EL02 Journeyman, etc.) and plumbers (PB Specialty Pump and Irrigation, PL Plumber) on individual cards — not the GC's company license. Your GC is required to sub-out these trades to individually-licensed people for any new circuit, panel work, gas line, or rough-in plumbing. Ask for the individual electrician's WA L&I license card and verify it's active. This is especially important on owner-built projects where homeowners sometimes accept 'a guy I know' for electrical or plumbing — if not licensed, your renovation cannot pass SDCI inspection and a future home sale becomes a problem.
Yes. Pre-1985 Seattle homes (which is most of Wallingford, Ballard, Capitol Hill, Mt Baker, West Seattle Craftsman + post-war housing stock) commonly have asbestos in vinyl floor tile mastic, pipe wrap insulation, popcorn ceilings, and HVAC duct tape. Washington Department of Ecology + Puget Sound Clean Air Agency (PSCAA) require pre-renovation surveys and notifications. Disturbance over a small threshold requires a licensed asbestos contractor. Test cost $300-$700 for a full home; abatement $10-$30 per sq ft depending on substrate. PSCAA inspects randomly — DIY removal of asbestos in Seattle is a $10K+ fine if caught.
Seattle is in a high seismic risk zone (Cascadia Subduction Zone + Seattle Fault). Voluntary cripple-wall and foundation-bolt retrofits are common in pre-1976 Seattle homes — typical cost $5K-$15K. Project Impact and Quake Bracer programs offer loans or partial subsidies. Mandatory retrofit is currently limited to URM (unreinforced masonry) commercial buildings — about 1,000 in Seattle, with phased compliance. Single-family retrofits are voluntary but strongly recommended in pre-1960 housing. Insurance-quake riders typically discount 5-15% for verified retrofit. Many Seattle insurance carriers ask for retrofit documentation before issuing or renewing earthquake riders.
Since 2021, Seattle's energy code restricts new gas piping in new construction and most major renovations. Existing gas appliances can be replaced like-for-like, but expanding gas service or running new gas lines triggers electrification review. New ADU/DADU construction is all-electric per code — heat pumps only, induction or electric cooking, electric hot water (heat pump water heater preferred). For existing-home renovations, this affects scope: replacing a gas range with a new gas range is usually fine; relocating it or adding a new gas line is not. Plan electrical service capacity early — 200A panel minimum, 400A for larger homes — many Seattle homes still on 100A and need an upgrade.
Ready for a Seattle scope? Talk to Baily — describe the project, drop photos, and get matched with a WA L&I-licensed contractor.