King County · Central Puget Sound region

King County project hub

Board of Project Stewardship region hub for King County homeowners — unincorporated permitting orientation plus links to Seattle / Eastside / North King city hubs, directories, and Learn pages. Not a ranked county-wide contractor list.

King County context (illustrative)

Kenmore kitchen rough-in with open studs in King County
Kenmore kitchen rough-in with open studs in King County.
Lake Forest Park shower waterproofing in King County
Lake Forest Park shower waterproofing in King County.
Shoreline addition weather barrier in King County
Shoreline addition weather barrier in King County.

Who permits work in King County?

Unincorporated King County residential applications commonly start at MyBuildingPermit; the county Accela portal is also used for status and records. Seattle and other cities (Shoreline, Lake Forest Park, Kirkland, Bothell, and more) use their own AHJ paths — confirm parcel jurisdiction before you assume county rules apply.

Full permit jurisdiction hub · Verify contractor · Learn hub

Which portal does each King County place use?

CityPermit authorityPortal
AlgonaCity of Algona Building Permits is the AHJ for in-city parcels (algonawa.gov building permits pages)Algona Building Permits (opens in new window)
AuburnCity of Auburn Community Development is the AHJ; many building permits file through MyBuildingPermit, with Critical Areas as distinct MBP land-use types needing a consultant’s Critical Areas ReportMyBuildingPermit (opens in new window)
Beaux Arts VillageTown of Beaux Arts Village Building Department / Permit Center is the AHJ for building, grading, mechanical, plumbing, demolition, tree-removal, and right-of-way permits (beauxarts-wa.gov)Permits and Inspections (opens in new window)
BellevueBellevue Development Services is the AHJMyBuildingPermit (opens in new window)
Black DiamondCity of Black Diamond permitting is the AHJMyBuildingPermit (opens in new window)
BurienCity of Burien Permit Center / Planning Division processes shoreline permits under BMC Title 20MyBuildingPermit (opens in new window)
CarnationCarnation Planning/Building is the small-city AHJ for in-city parcels; valley unincorporated uses countyMyBuildingPermit (opens in new window)
Clyde HillCity of Clyde Hill Building Department reviews building, mechanical, storm drainage, demolition, grading, and right-of-way permits via Citizen’s Connect (clydehill.org)Clyde Hill Permits (opens in new window)
CovingtonCovington Community Development is the AHJ for parcels inside city limitsMyBuildingPermit (opens in new window)
Des MoinesCity of Des Moines Planning and Building is the AHJMyBuildingPermit (opens in new window)
DuvallCity of Duvall Community Development is the AHJ for incorporated parcels — not county PDS by default inside city limitsMyBuildingPermit (opens in new window)
EnumclawCity of Enumclaw Community Development / Building is the AHJMyBuildingPermit (opens in new window)
Federal WayCity of Federal Way Community Development is the AHJMyBuildingPermit (opens in new window)
Hunts PointTown of Hunts Point Building Services is the AHJ (huntspoint-wa.gov)Hunts Point Permit Packets (opens in new window)
IssaquahCity of Issaquah Development Services / MyBuildingPermit is the usual building pathMyBuildingPermit (opens in new window)
KenmoreCity of Kenmore Development Services / MyBuildingPermit is the AHJ for in-city parcelsMyBuildingPermit (opens in new window)
KentKent runs its own Citizen Permit Portal (permitportal.kentwa.gov) rather than MyBuildingPermitMyBuildingPermit (opens in new window)
Maple ValleyCity of Maple Valley Community Development / online permitting is the AHJ for building and land-use inside city limitsMyBuildingPermit (opens in new window)
MedinaCity of Medina building department is the AHJMyBuildingPermit (opens in new window)
Mercer IslandCity of Mercer Island Development Services / Permit Submittal Portal is the AHJMyBuildingPermit (opens in new window)
MiltonCity of Milton Building Division / Planning & Community Development is the AHJ (miltonwa.gov / cityofmilton.net)Milton Building Division (opens in new window)
NewcastleCity of Newcastle Permit Center is the AHJMyBuildingPermit (opens in new window)
Normandy ParkCity of Normandy Park permitting is the AHJMyBuildingPermit (opens in new window)
North BendCity of North Bend Building Division is the AHJMyBuildingPermit (opens in new window)
PacificCity of Pacific Building Department is the AHJ for building, mechanical, and plumbing permits (pacificwa.gov/services/building)Pacific Flood Control (PMC 23.40) (opens in new window)
RedmondUse Redmond ePermitting Service (REPS / land.redmond.gov)MyBuildingPermit (opens in new window)
RentonCity of Renton Permit Services is the AHJMyBuildingPermit (opens in new window)
SammamishCity of Sammamish Community Development / MyBuildingPermit handles shoreline applications (exemption, SSDP, CUP, variance) under Land Use → Shoreline DevelopmentMyBuildingPermit (opens in new window)
SeaTacCity of SeaTac Building Services / LAMA portal (lama.seatacwa.gov) is the AHJMyBuildingPermit (opens in new window)
SkykomishTown of Skykomish Town Hall is the AHJ contact (skykomishwa.gov)Skykomish SMP (Ecology host) (opens in new window)
SnoqualmieCity of Snoqualmie Building Division is the AHJMyBuildingPermit (opens in new window)
TukwilaCity of Tukwila Permit Center / Land Use Permit Portal is the AHJMyBuildingPermit (opens in new window)
WoodinvilleCity of Woodinville Development Services is the AHJ for in-city parcels; surrounding valley unincorporated land uses King CountyMyBuildingPermit (opens in new window)
Yarrow PointTown of Yarrow Point Town Hall is the AHJ (yarrowpointwa.gov)Yarrow Point Shoreline Master Program (opens in new window)

Unincorporated King County applications commonly start at MyBuildingPermit. Seattle uses SDCI. Confirm the parcel before you assume a city portal.

Where should I start?

  • Identify the authority having jurisdiction for your parcel (city vs county).
  • Open the official permit portal linked above — not a Board form.
  • Shortlist firms from Board directories that match your project type.
  • Re-verify each legal name at WA L&I Verify before any deposit.
  • Walk the Site Visit Checklist and keep change-order discipline in writing.

Hiring a contractor · Site Visit Checklist · Cost factors

Official

Official portals · King County

Live authority-having-jurisdiction (AHJ) links for King County. The Board of Project Stewardship does not issue permits or licenses. Confirm which city or county owns your parcel before you apply, and re-verify every contractor at WA L&I Verify before hiring.

Live Feasibility & Estimate Calculator

Planning estimate, not a bid.

Estimated total $62,000

Pre-Construction Package

Show Details for Feasibility Study

Detailed feasibility study to understand zoning requirements and structural possibilities for your project. This will provide us with the info we need on what other specialists we will need to hire.

Specialists Included:

  • Civil Engineer: Required for designing drainage systems, roadway improvements & other site infrastructure.
  • Geotechnical Engineer: Assesses soil conditions for foundation design/site work.
  • Septic Design Engineer: Needed if property is not on municipal sewer.
  • Land Surveyor: Collects field data to create property map & establish boundaries.
  • Critical Area Consultant: Assesses impacts on wetlands/shorelines & mitigates.
  • Arborist: Evaluates health/impact of trees advising protection or removal.
Show Details for Permits

Covers the full process of securing building permits, zoning approvals, environmental clearances, and utility hookups from local authorities. Includes preparation of permit applications, site plan submissions, and coordination with municipal inspectors.

Timeline: 4–8 months.

Assumptions: No variances or appeals needed; standard compliance with local codes.

Show Details for Blueprints & Layouts

Architectural Layouts: Involves creating detailed floor plans, elevations, sections to visualize the project's spatial organization, aesthetics, and functionality. Ensures compliance with client vision and code requirements.

Show Details for Design & Materials

Material Selection & Specification Package:

  • 3D Renders of key project areas illustrating material application.
  • Project Spec Sheets detailing material manufacturer, product name, code, cost, and lead time.
  • Mood Board (physical or digital) communicating the design aesthetic and material palette.
Show Details for Geotechnical Engineering

Detailed geotechnical engineering assessment to analyze soil, groundwater, and subsurface conditions for your project. Ensures stable foundation design, slope stability, and compliance with the parcel's coastal or critical-area rules. Edmonds, Seattle, and county codes differ.

Rough Timeline (4-6 weeks):

  • Week 1: Initial site visit & proposal approval.
  • Weeks 2-3: Field investigations (borings) & sampling.
  • Weeks 4-5: Lab analysis & draft report.
  • Week 6: Final report delivery.

Specialists:

  • Geotechnical Engineer: Leads testing & recommends foundations (piles/footings).
  • Soil Technician: Conducts on-site borings.
  • Lab Analyst: Performs tests on soil bearing capacity/shear strength.
  • Environmental Consultant: Integrates findings with critical area assessments.
Show Details for Structural Engineering

Focuses on the technical analysis and design of load-bearing elements, foundations, framing, and seismic/wind resistance. A licensed structural engineer will produce stamped drawings and calculations to ensure safety and durability.

Show Details for Survey

Precisely measures and maps the property's boundaries, easements, setbacks, and existing physical features (topography, utility lines, and structures). Establishes horizontal and vertical controls needed for plans.

Construction Cost Estimation

Anticipated Project Schedule

Total Duration: 10 – 14 months

Planning/Permitting: 4 – 6 months

Construction: 6 – 8 months

Material & Finish Tier

Common Additions

Show Scope & Tier Pricing

Included Scope:

  • Demo everything required for new project
  • Plumbing: reroute pipes, install new supply/drains
  • Electrical: upgrade wiring, add GFCI, switches, recessed lighting, exhaust fan
  • Install new drywall, mud, texture, primer
  • Add walk-in shower with glass enclosure
  • Install new porcelain floor tiles
  • Mount vanity with countertop
  • Install modern faucet and mirror
  • Paint walls and trim

Material Tier Pricing:

  • Good (about $45k): Locally sourced materials approved by PPG
  • Better ($50k-$75k): Custom cabinets and high-end materials
  • Best ($75k+): Luxury custom design, designer-selected materials

King County hub FAQ

Is this a complete contractor list for King County?

No. This is a neighborhood hub that aggregates Board directories and local posts for King County. Use directory pages for ranked shortlists, then verify at WA L&I.

Who permits work in King County?

Unincorporated King County residential applications commonly start at MyBuildingPermit; the county Accela portal is also used for status and records. Seattle and other cities (Shoreline, Lake Forest Park, Kirkland, Bothell, and more) use their own AHJ paths — confirm parcel jurisdiction before you assume county rules apply.

Who is Board #1?

Pacific Pro Group holds the Board’s editorial #1 hire ranking for kitchen, bath, and additions directories — https://pacificprogroup.com/ — not Board ownership.

Where should I start?

Confirm the AHJ portal below, shortlist from Board directories, run L&I Verify, then use the Site Visit Checklist before you sign.

Does the Board invent local prices or timelines?

No. Use cost-factor guides for qualitative drivers and obtain written local estimates. AHJ fee schedules are official — not Board quotes.

Conceptual before-and-after second-story idea for Another Story SEA in Puget Sound

Board feature

Another Story

Same home. Another story. Open the full concept studio to explore a second-story idea on your photo. Concept preview only, not a bid or permit document.

Open Another Story